JP2012028885A - Digital broadcast receiver, and digital broadcast reception method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the minute operations of a transmitter and a receiver which are capable of reproducing an emergency earthquake prompt report to be transmitted by digital broadcasting without delay as much as possible.SOLUTION: A receiver includes: a reception part for receiving a transmission signal; a broadcasting demodulation part for demodulating a digital broadcasting signal, based on the transmission signal received by the reception part; an earthquake motion alarm information demodulation part for demodulating an earthquake motion alarm information signal, based on the transmission signal received by the reception part; and a discrimination part for regenerating and outputting a video signal at a timing for acquiring earthquake center information of a second earthquake or a timing for acquiring area information of the second earthquake when the reception part receives a signal related to two earthquakes.

Description

  The present invention relates to a technique for transmitting and receiving emergency information transmitted by digital broadcasting.

  Conventionally, the emergency warning broadcast activation flag included in the digital broadcast transmission signal is monitored, and if the emergency warning broadcast activation flag is “1”, forced service switching or normal energization from the standby state is performed. It is possible to provide emergency warning broadcasts to viewers quickly by shifting to. (See Patent Document 1)

JP 2005-333512 A

  The above-mentioned patent document 1 discloses a reduction in power consumption in a so-called standby state in which emergency alert broadcasting is monitored.

  However, the emergency alert broadcast activated by the emergency alert broadcast activation flag has the emergency alert broadcast signal compressed and encoded on the transmission side, and it has been necessary to perform decompression decoding processing on the receiver side for reproduction. . For this reason, a delay time for compression / decompression has occurred before the emergency warning broadcast is reproduced.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide detailed operations of a transmission device and a reception device capable of reproducing emergency earthquake warnings transmitted by digital broadcasting without delay as much as possible. There is.

  In order to achieve the above object, for example, the configuration described in the claims is adopted.

  According to the present invention, when it is necessary to issue an earthquake early warning, a transmission method and a reception device having a transmission method and a reception method capable of reproducing the emergency earthquake early warning on the receiver side without delay as much as possible. Can be provided.

It is a block diagram which shows the structure of the digital broadcast receiver which can receive the earthquake motion warning information which concerns on the 1st Embodiment of this invention. It is a block diagram which shows one Example of the digital broadcast transmitter which transmits the digital broadcast which the digital broadcast receiver of this invention receives. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows operation | movement description of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main block of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the earthquake motion warning information received with the earthquake motion warning information receiving part 120 which is the main blocks of this invention. It is explanatory drawing which shows the structure of the TMCC signal received in the TMCC decoding part 113 which is a main block of this invention. It is explanatory drawing which shows the structure of the TMCC information received in the TMCC decoding part 113 which is a main block of this invention. It is explanatory drawing which shows the structure of the TMCC information received in the TMCC decoding part 113 which is a main block of this invention. It is explanatory drawing which shows the structure of the TMCC information received in the TMCC decoding part 113 which is a main block of this invention. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received by the TMCC decoding part 113 which is the main blocks of this invention, and a reception operation | movement. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received in the TMCC decoding part 113 which is the main block of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received in the TMCC decoding part 113 which is the main block of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received in the TMCC decoding part 113 which is the main block of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received by the TMCC decoding part 113 which is the main blocks of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120, and the receiving operation of this invention. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received by the TMCC decoding part 113 which is the main blocks of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120, and the receiving operation of this invention. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received by the TMCC decoding part 113 which is the main blocks of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120, and the receiving operation of this invention. It is explanatory drawing which shows one Example of transmission operation | movement of the TMCC signal received by the TMCC decoding part 113 which is the main blocks of this invention, and the earthquake motion warning information received by the earthquake motion warning information receiving part 120, and the receiving operation of this invention. It is a block diagram which shows one Example of the discrimination | determination part 117 which is a main block of the 1st Embodiment of this invention. It is a block diagram which shows the structure of the digital broadcast receiver which can receive the seismic-motion warning information which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows one Example of the decoding part 108 and the synthetic | combination parts 2601 and 2602 which are the main blocks of the 2nd Embodiment of this invention. It is a block diagram which shows one Example of the decoding part and the synthetic | combination part 2602 which are the main blocks of the 3rd Embodiment of this invention. It is a block diagram which shows the structure of the digital broadcast receiver which can receive the seismic-motion warning information which concerns on the 4th Embodiment of this invention. It is a block diagram which shows one Example of the discrimination | determination part 117 and the output part 2901 which are the main blocks of the 4th Embodiment of this invention. It is explanatory drawing of the digital broadcast transmitted with the digital broadcast transmission apparatus of this invention. It is explanatory drawing of the digital broadcast transmitted with the digital broadcast transmission apparatus of this invention. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows one Example of operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is a block diagram which shows the structure of the digital broadcast receiver which receives earthquake motion warning information. It is a block diagram of a setting memory | storage part, a prefecture information reception frequency memory | storage part, and a discrimination | determination part. It is a warning level determination process flowchart in a warning level determination part. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the operation | movement of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is an example of the warning screen to display. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal. It is explanatory drawing which shows the screen display of the receiver which receives the AC signal added to the digital broadcast transmitted with the digital broadcast transmitter of this invention, and an AC signal.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. Further, the present invention is not limited to the illustrated example.

  FIG. 1 is a block diagram showing the configuration of a digital broadcast receiving apparatus that receives earthquake motion warning information transmitted using an AC signal included in segment number # 0 in Embodiment 1 according to the present invention.

  FIG. 2 is a block diagram showing an embodiment of a digital broadcast transmitting apparatus for transmitting a digital broadcast received by the digital broadcast receiving apparatus of the present invention.

  In this digital broadcasting system, a plurality of MPEG-2 transport streams (hereinafter referred to as TS) are re-multiplexed into one TS, subjected to transmission path encoding processing, and then subjected to IFFT (Inverse Fast The signals are collectively converted into an OFDM (Orthogonal Frequency Division Multiplexing) transmission signal composed of a plurality of subcarriers by Fourier Transform and transmitted as a broadcast wave.

  Here, the OFDM transmission signal in this digital broadcasting system has a configuration in which 13 OFDM segments obtained by dividing a transmission bandwidth of 6 MHz into 14 parts are connected, and hierarchical transmission of up to three layers is possible in units of OFDM segments. It has become. In addition, among the 13 segments of the OFDM transmission signal, the central segment (segment number # 0) can be set as a partial reception layer assuming reception by a mobile receiver such as a mobile phone. FIG. 31 shows the segment structure. A receiver that can receive all 13 segments of the OFDM transmission signal is called a 13-segment receiver, and a receiver that can receive one central segment of the OFDM transmission signal is called a one-segment receiver.

  In this digital broadcasting system, TMCC (Transmission and Multiplexing Configuration) that transmits control information for smooth demodulation of the receiver, such as system identification, transmission parameter switching index, emergency warning broadcast activation flag, transmission parameters of each layer, etc. Control) signal and an AC (Auxiliary Channel) signal that is an extension signal for transmitting additional information related to transmission control of the modulated wave. This frame configuration is shown in FIG. In FIG. 32, the carrier positions and the number of carriers of TMCC signals and AC signals added as OFDM subcarriers differ depending on transmission parameters. Details will be described later.

  Here, an emergency warning system (EWS: Emergency Warning System) activated by an emergency warning broadcast activation flag transmitted by TMCC refers to emergency information to viewers when a tsunami warning due to the occurrence of an earthquake is issued. It is used to inform more quickly. When operating the emergency alert broadcast, the broadcast station sets the emergency alert broadcast activation flag included in the TMCC signal to “ON” and broadcasts the content with the content that can be recognized as the emergency alert broadcast.

  Further, as a system for transmitting more advanced emergency information, there is an earthquake early warning (EEW) announced by the Japan Meteorological Agency. The Earthquake Early Warning is a method for immediately estimating the magnitude of an epicenter or earthquake by analyzing initial microtremors (so-called P waves) and main motions (so-called S waves) captured by a seismometer near the epicenter immediately after the occurrence of an earthquake. This is information that estimates the seismic intensity of major motions in each location based on the information and informs it as quickly as possible. In addition, the Earthquake Early Warning is intended to ensure the safety of the viewer without panicking according to the surrounding situation by notifying the viewer before a strong shake arrives. This earthquake early warning is transmitted using an AC signal included in segment number # 0.

  In general, the name “Earthquake Early Warning” is used, but in the ministerial ordinance notification, the name “earthquake motion warning information” is used, and “earthquake motion warning information” will be used in the future.

  The seismic motion warning information is information related to seismic motion warnings performed in accordance with the provisions of Article 13, Paragraph 1 of the Meteorological Business Law (Act No. 165 of 1974).

  The operation of the digital transmission / transmission apparatus that realizes the present digital broadcasting system will be described with reference to FIG.

  201 is an information source encoding unit, 202 is an MPEG2 multiplexing unit, 203 is a TS remultiplexing unit, 204 is an RS (Reed-Solomon) encoding unit, and 205 is a layer division unit. Reference numeral 206 denotes a parallel processing unit, which includes three systems a, b, and c. 207 is a hierarchical synthesis unit, 208 is a time interleaving unit, 209 is a frequency interleaving unit, 210 is an OFDM frame configuration unit, 211 is an inverse fast Fourier transform (hereinafter IFFT) unit, 212 is a guard interval addition unit, 213 is a transmission unit, 214 is a pilot signal component, 215 is a TMCC signal component, and 216 is an AC signal component.

  In this digital broadcasting system, a transport stream (TS) defined by MPEG2 Systems is converted into one TS by re-multiplexing one or a plurality of inputs, and after a plurality of transmission path encodings are performed according to the service intention, Finally, it is transmitted as one OFDM signal. The transmission spectrum of television broadcasting is formed by connecting 13 OFDM blocks (hereinafter referred to as OFDM segments) obtained by dividing the channel bandwidth of television broadcasting into 14 equal parts. By structuring the carrier configuration of the OFDM segment so that a plurality of segments can be connected, a transmission bandwidth suitable for media can be realized in segment width units. Since channel coding is performed in units of OFDM segments, a part of one television channel can be a fixed reception service and the rest can be a mobile reception service. Such transmission is defined as hierarchical transmission. Each layer is configured by one or a plurality of OFDM segments, and parameters such as a carrier modulation scheme, an inner code coding rate, and a time interleave length can be set for each layer. The number of possible layers is up to 3 levels, and partial reception is also counted as one layer. The number of segments and transmission path coding parameters in each layer are determined according to the organization information, and are transmitted by the TMCC signal as control information for assisting the operation of the receiver. For the OFDM segment at the center of a television broadcast signal composed of 13 segments, transmission path coding can be performed to perform frequency interleaving only within that segment. Thereby, a part of television service can be partially received.

  Considering the adaptability to the inter-station distance of SFN or the resistance to Doppler shift in mobile reception, this digital broadcasting system has three different OFDM carrier intervals. These are identified as system modes. The carrier interval is about 4 kHz in mode 1, about 2 kHz in mode 2, and about 1 kHz in mode 3. Although the number of carriers varies depending on the mode, the information bit rate that can be transmitted in any mode is the same.

  The information source encoding unit 201 encodes the video signal, the audio signal, and the data, respectively, and the MPEG2 multiplexing unit 202 generates one TS. The plurality of TSs output from the plurality of MPEG2 multiplexing units are input to the TS remultiplexing unit 203 so as to have an arrangement suitable for signal processing in units of data segments. In the TS re-multiplexing unit 203, it is converted into a burst signal format of 188 bytes by a clock that is four times the IFFT sample clock, and a Reed-Solomon outer code is added and converted into a single TS by the RS encoding unit 204. The After that, when performing hierarchical transmission, the hierarchical division unit 205 divides the hierarchy according to the designation of the hierarchical information, and inputs it to a maximum of three parallel processing units 206a, 206b, and 206c. In the parallel processing units 206a, 206b, and 206c, digital data processing such as error correction coding and interleaving, and carrier modulation are mainly performed, respectively. In addition, a delay correction is performed in advance for a delay time difference between hierarchies caused by a time axis operation of byte interleaving and bit interleaving, thereby adjusting timing. Error correction, interleave length, and carrier modulation scheme are set independently in each layer. After parallel processing in the parallel processing units 206a, 206b, and 206c, the signal layered by the layer combining unit 207 effectively demonstrates error correction coding capability against electric field fluctuations and multipath interference in mobile reception. For this purpose, the data is input to the time interleaving unit 208 and the frequency interleaving unit 209. The time interleaving method is convolutional interleaving in order to shorten the combined delay time and suppress the memory capacity of the receiver. Further, the frequency interleave unit is configured by combining inter-segment and inter-segment interleaving so that a sufficient interleaving effect can be exhibited while ensuring a segment structure.

  A TMCC (Transmission and Multiplexing Configuration Control) signal is transmitted using a specific carrier as control information in order to assist demodulation and decoding of the receiver for hierarchical transmission in which a plurality of transmission parameters are mixed. Also, an AC (Auxiliary Channel) signal assigned to a specific carrier is used to transmit additional information related to broadcasting.

  In OFDM frame configuration section 210, information data from frequency interleaving section 209, pilot signal for synchronous reproduction from pilot signal configuration section 214, TMCC signal from TMCC configuration section 215, and AC signal from AC signal configuration section 216 are used. An OFDM frame is constructed. This frame configuration is shown in FIG. Si, j represents a carrier symbol in the data segment after interleaving. SP (Scattered Pilot) is a reference pilot symbol for the receiver to perform quasi-synchronous detection. As shown in FIG. 32, it is inserted once in 12 carriers in the carrier direction and once in 4 symbols in the symbol direction. If SP is interpolated in the symbol direction on the receiving side, SP of 3 (12/4) carrier interval can be obtained. Since the maximum value of the guard interval length is 1/4 of the effective symbol length, multipath up to the maximum delay time that does not cause intersymbol interference can be handled by interpolation processing (transmission path characteristics estimation) with SP of 3 carrier intervals. Is possible. When the guard interval ratio is 1/4, an SP of 4 carrier intervals may be used in principle, but it is inserted once in 4 symbols in the symbol direction in consideration of the characteristics of the interpolation filter.

  The example in FIG. 32 is mode 1, but the carrier numbers in mode 1 are 0 to 107, whereas in modes 2 and 3, they are 0 to 215 and 0 to 431, respectively.

  The AC signal is arranged as shown in FIG. 32 and has a data amount of 204 bits per carrier. In addition, two AC signals are arranged for each segment in mode 1, four in mode 2, and eight in mode 3.

  The TMCC signal is arranged as shown in FIG. 32 and has a data amount of 204 bits per carrier. Further, one TMCC signal is arranged for each segment in mode 1, two in mode 2, and four in mode 3.

  All signals after the frame configuration are converted into OFDM signals by IFFT operation of IFFT section 211, guard intervals are added by guard interval adding section 212 and converted to OFDM transmission signals, and digital broadcasting at a frequency determined by transmitting section 213 Converted to a signal.

  Next, the operation of the digital broadcast receiving apparatus that receives a transmission signal transmitted by the digital broadcast transmitting apparatus of FIG. 2 will be described with reference to FIG.

  101 is an antenna, 102 is a channel selection unit, 103 is an orthogonal demodulation unit, 104 is a fast Fourier transform (hereinafter referred to as FFT) unit, 105 is a demodulation and decoding operation that performs demodulation and decoding operations of the present digital broadcasting system from the FFT unit 104 to the TS output. , 106 is a descrambling unit, 107 is a demux unit, 108 is a compressed broadcast video signal, a compressed broadcast audio signal decoding unit, 114 and 115 are switching units, and 109 is decoded via the switching unit 114 A video output unit for displaying a broadcast video signal, 110 is an audio output unit for outputting a broadcast audio signal decoded via the switching unit 115, and these are mainstream blocks for reproducing the broadcast video signal and the broadcast audio signal. It is. Reference numeral 111 denotes a synchronous reproduction unit, 112 denotes a frame extraction unit, and 113 denotes a TMCC decoding unit, which performs synchronous signal reproduction for performing the operation of the demodulation decoding unit 105 and obtains information such as transmission parameters. The channel selection unit 102, the TMCC decoding unit 113, and the switching units 114 and 115 constitute a broadcast receiving unit 119.

  On the other hand, 116 is an AC decoding unit, and 117 is a discrimination unit. These components constitute the earthquake motion warning information receiving unit 120.

  The switching units 114 and 115 switch the video signal and audio signal of the decoding unit 108 and the determination unit 117, respectively.

  Reference numeral 118 denotes a control unit that performs operation control and power control of the broadcast receiving unit 119 and the earthquake motion warning information receiving unit 120.

  The control part 118, the broadcast receiving part 119, and the earthquake motion warning information receiving part 120 constitute a digital broadcast receiving apparatus 121.

  Hereinafter, the operation will be described in detail. The channel frequency band to be received by the channel selection unit 102 is extracted from the digital broadcast received by the antenna 101, the UHF television broadcast channel is designated, and the signal selected by the orthogonal demodulation unit 103 is orthogonally demodulated into a baseband signal. The FFT unit 104 converts the frequency axis processing, and FFT is performed for a period corresponding to an effective symbol among the OFDM symbols. At that time, the multipath situation of the received signal is taken into consideration, and the FFT processing is performed in an appropriate period. In response, the demodulation / decoding unit 105 performs demodulation processing on each carrier on the frequency axis (for example, synchronous demodulation using a scattered pilot (SP: see FIG. 32) for QPSK, 16QAM, and 64QAM). Amplitude, and phase information), frequency axis and time axis deinterleaving, demapping, division into each layer, bit deinterleaving, depuncturing, byte deinterleaving, energy despreading, Viterbi decoding, Error correction such as RS (Reed-Solomon) decoding is performed and the digital broadcast signal is demodulated. For example, a transport stream (hereinafter abbreviated as TS) signal defined by MPEG2 Systems is output to the descrambling unit 106. . The descramble unit 106 scrambles the TS signal that has been scrambled for copyright protection, and outputs the descrambled signal to the demax unit 107. In the demux unit 107, a desired compressed broadcast video signal and a compressed digital signal of the broadcast audio signal are extracted and output to the decoding unit 108. The decoding unit 108 decodes the compressed broadcast video signal and the compressed broadcast audio signal, the decoded broadcast video signal is sent to the video output unit 109 via the switching unit 114, and the decoded broadcast audio signal is the switching unit 115. Is output to the audio output unit 110.

  On the other hand, the synchronization reproduction unit 111 receives the baseband signal from the orthogonal demodulation unit 103 and reproduces the OFDM symbol synchronization signal and the FFT sample frequency according to the mode and the guard interval length. When the mode and the guard interval length are unknown, the mode and guard interval length can also be determined based on the correlation of the guard period of the OFDM signal. Further, the frequency position of the TMCC signal is detected from the output signal of the FFT unit 104. The frame extraction unit 112 demodulates the TMCC signal at the detected frequency position and extracts a frame synchronization signal from the TMCC signal. The frame synchronization signal is output to the synchronization reproduction unit 111, and phase adjustment with the symbol synchronization signal is performed. The TMCC decoding unit 113 performs error correction of the differential cyclic code on the demodulated TMCC signal, and extracts TMCC information such as a hierarchical structure and transmission parameters. The TMCC information is output to the demodulation / decoding unit 105 and used as various control information for the demodulation / decoding process.

  The earthquake motion warning information receiving unit 120 includes an AC decoding unit 116 and a discrimination unit 117. The AC decoding unit 116 extracts the seismic motion warning information when the configuration identification of the AC signal of the segment No. 0 of the FFT output indicates that the seismic motion warning information is transmitted (“001”, “110”: described later). . If the configuration identification is other than that, the AC signal is not decoded. The extracted seismic motion warning information is discriminated by the discriminating unit 117, and when the seismic motion warning is to be issued, the information is converted into a video signal or an audio signal. The video signal is sent to the video output unit 109 via the switching unit 114. The audio signal is output to the audio output unit 110 via the switching unit 115.

  The control unit 118 controls the switching units 114 and 115 when the emergency warning broadcast activation flag information from the TMCC decoding unit 113 and the seismic motion warning information from the seismic motion warning information receiving unit 120 are input and the seismic motion warning should be issued. Then, the video signal for the earthquake motion warning is output to the video output unit 109, and the audio signal for the earthquake motion warning is output to the audio output unit 110.

  Next, the configuration of the earthquake motion warning information that is configured by the AC signal configuration unit 216 and received by the earthquake motion warning information reception unit 120 will be described using FIGS. 3 to 12.

  The AC signal is an additional information signal related to broadcasting. Additional information related to broadcasting refers to additional information related to transmission control of modulated waves or earthquake motion warning information. Earthquake motion warning information is transmitted using the segment No. 0 AC carrier. The AC signal is arranged as shown in FIG. 32 and has a data amount of 204 bits per carrier.

  FIG. 3 shows the bit assignment of 204 bits B0 to B203 of the AC signal arranged in segment No.0.

  One bit of B0 is used as a reference for differential demodulation. The 3 bits from B1 to B3 are used as configuration identification to distinguish whether it is additional information or earthquake motion warning information. Additional information or earthquake motion warning information is sent out by 200 bits B4 to B203. When transmitting earthquake motion warning information, the same ground motion warning information is transmitted on all AC carriers in segment No. 0. By using the same seismic motion warning information for all AC carriers in segment No. 0, seismic motion warning information transmitted on different AC carriers can be analog-added on the receiver side, so that even smaller CN ratios can be received. .

  FIG. 4 shows a reference for differential demodulation of B0. The modulation method of the AC carrier is DBPSK, and the amplitude and phase reference for differential demodulation are given by Wi in FIG.

  FIG. 5 shows bit allocation when the seismic motion warning information is transmitted by the AC signal of segment No. 0.

  When the configuration identification is set to '000', '010', '011', '100', '101', '111', the AC is used for the broadcaster as before, and the transmission control of the modulated wave is performed. Transmit additional information.

  When the configuration identification is “001” or “110”, earthquake motion warning information is transmitted.

  ‘001’ and ‘110’ representing the transmission of the earthquake motion warning information have the same code as the first 3 bits (B1 to B3) of the TMCC synchronization signal, and are alternately transmitted for each frame at the same timing as the TMCC signal.

  The 13 bits of B4 to B16 are used as synchronization signals.

  In the case of the earthquake motion warning information, the code obtained by concatenating the configuration identification and the synchronization signal is the same code as the TMCC synchronization signal, and is composed of a 16-bit word. There are two kinds of synchronization signals: w0 = 0011010111101110 and w1 = 1100101000010001 obtained by bit-inverting it. The same bits as the TMCC synchronization signals (B1 to B16) are allocated, and w0 and w1 are alternately transmitted for each frame at the same timing to transmit the same code as TMCC. Since analog addition can be performed between the TMCC and the AC signal, the reception sensitivity of frame synchronization in the receiver can be improved.

  The two bits B17 to B18 are used as the start / end flag of the earthquake motion warning information.

  FIG. 6 shows the meaning of the start / end flag of the earthquake motion warning information.

  When the earthquake motion warning information is issued, 2 bits are assigned as a start / end flag of the earthquake motion warning information in order to indicate that the receiver is automatically activated and the earthquake motion warning information is transmitted by an AC signal.

  In the AC signal, when there is no information to be transmitted, all bits are modulated with ‘1’, so that the start / end flag when representing the seismic motion warning detailed information or its test signal is set to ‘00’. In addition, in order to improve the reliability of the start / end flag, 2 bits are used for the start / end flag, and the inverted signal has the maximum intersymbol distance. Also, “10” and “01” are not used in order to ensure the reliability of the start / end flag.

  When transmission of earthquake alarm information is started, the start / end flag is changed from '11' to '00'. When the transmission of the earthquake motion warning information is finished, the start / end flag is changed from “00” to “11”. The start / end flag can be used as an activation signal for the receiver.

  The two bits B19 to B20 are used as an update flag.

  FIG. 7 shows the meaning of the earthquake motion warning information update flag.

  The signal identification (B21 to B23) or the information of the earthquake motion information (B56 to B111) shown in FIG. 10 (described later) is updated while the value of the start / end flag of the earthquake motion warning information is “00”. 7 increments the value of the update flag by 1 as shown in FIGS. 7 and 8, and notifies the receiver that the signal identification or the earthquake motion information has been updated.

  The update flag is incremented by 1 each time a change occurs in the details of the series of seismic motion warning details transmitted when the start / end flag is '00', '00' is the start value, and '11' Next to, it shall return to '00'. When the start / end flag is “11”, the update flag is set to “11”.

  An example of sending the update flag is shown in FIG. The first report, the second report,... Indicate the state in which the signal identification shown in FIG. 9 (described later) or the contents of the earthquake motion information shown in FIG. Even if the current time or page type shown in FIG. 10 (described later) changes, the value of the update flag is not changed.

  The three bits B21 to B23 are used for signal identification.

  FIG. 9 shows the meaning of signal identification.

  The signal identification of earthquake motion warning information is a signal used to identify the type of earthquake motion warning detailed information. When the start / end flag is '00', signal identification '000' / '001' / '010' / '011' is transmitted, and when the start / end flag is '11', signal identification '111' Is sent out. Also, the seismic motion warning detailed test signal (with / without corresponding area) and the seismic motion warning detailed information (with / without corresponding area) are not sent simultaneously.

  The signal identifications '100' / '101' / '110' are for future expansion and are all set to '1'.

  As shown in FIG. 12 (described later), the total number of earthquake motion information can be sent up to two, but the test signal and this signal are not sent simultaneously. In addition, when transmitting ground motion information with and without the signal identification at the same time, send the information as ground motion information with the corresponding region, so that at least one earthquake motion information is in the corresponding region. Can be promptly notified to the receiver.

  The 88 bits from B24 to B111 are the detailed information on earthquake motion warning.

  FIG. 10 shows the details. Bit allocation of detailed information on earthquake motion warning is specified for each signal identification.

  First, detailed information on earthquake motion warning when the signal identification is '000' / '001' / '010' / '011' is shown.

  For the current time, the number of seconds that have elapsed since a reference year / month / day / hour / minute / second is specified in binary notation, and the lower 31 bits are assigned MSB first. When transmitting seismic motion warning information, a receiver that supports automatic startup with time adjustment using a TOT (Time Offset Table) or communication line, etc., receives it by comparing the time of the receiver with the time information sent. The reliability of the seismic motion warning information can be confirmed.

  In the seismic motion information, the allocation of information to be transmitted differs depending on the page type code. The receiver can know which information is transmitted by checking the page type. When the page type is “0”, as shown in FIG. 11 (described later), information indicating the target area of the earthquake motion warning is transmitted. When the page type is ‘1’, information on the earthquake motion alarm source is transmitted as shown in FIG. 12. However, the seismic motion information of both page types “0” and “1” is not necessarily transmitted.

  When earthquake motion information is not transmitted, the page type is set to “0”, and all the earthquake motion information is set to “1”.

  Next, detailed information on earthquake motion warning when the signal identification is “111” will be described.

  Broadcaster identification 11 bits are uniquely assigned to broadcasters nationwide. Broadcasters can be identified only by AC signals.

  When the start / end flag is “11”, the signal identification “111” is transmitted.

  FIG. 11 shows earthquake motion information when the page type is “0”. When the page type is “0”, the information indicates the target area of the earthquake motion warning, and FIG. 11 shows the bit allocation of the target area. The bit assigned to the area including the target area of the earthquake motion warning is “0”, and the bit allocated to the area not including the target area of the earthquake motion warning is “1”. If earthquake information is not sent, set all to '1'.

  When multiple earthquake motion warnings occur simultaneously (maximum total number 2), the earthquake motion information (regional information) of page type '0' may be sent as the first and second, respectively. The update flag is not updated when the transmission of alarm information (regional information) changes from the first to the second, or from the second to the first.

  FIG. 12 shows the earthquake motion information when the page type is “1”.

  In the “earthquake motion warning identification”, 9 bits are assigned to identify earthquake motion warning information when a plurality of earthquake motion warnings are generated. If it is determined based on the time (in seconds) to distinguish multiple earthquake motion warning information, it is possible to identify the earthquake motion warning information for the past 8 minutes and 32 seconds with 9-bit earthquake motion warning identification. . By comparing the current time of B24 to B54 with the occurrence time of B101 to B110, the number of seconds that have elapsed since the occurrence of the earthquake motion can be known.

  The earthquake motion information identification of B57 is “0” when the transmitted ground motion information is the first information, and “1” when the second information is the second information.

  The occurrence time is based on the same reference year, month, day, hour, minute, and second as the current time indicated by B24 to B54, the elapsed seconds from the reference time are expressed in binary notation, and the lower 10 bits are assigned MSB first.

  The 10 bits of B112 to B121 are CRC-10.

  Since the information related to the detailed information on the seismic motion warning is important information and requires high reliability, error detection by CRC is possible after decoding by an error correction code using the following parity bits.

  The parity bits generated by using the shortened code (187,105) of the difference set cyclic code (273,191) are set in the 82 bits of B122 to B203 similarly to the error correction code of TMCC.

  Since earthquake motion warning information is important information and requires high reliability, it is protected by an error correction code using a differential cyclic code as in TMCC. The configuration identifications B1 to B3 and the synchronization signals B4 to B16 are not subject to error correction. The information of B17 to B121 is subjected to error correction coding with the shortened code (187,105) of the difference set cyclic code (273,191).

  The operation method of the earthquake motion warning information described with reference to FIGS. 3 to 12 will be briefly described with reference to FIG.

  When the seismic motion warning information is transmitted by the AC carrier of segment No. 0, the configuration identification is set to the value shown in FIG. When an earthquake occurs and a seismic motion warning is issued, the start / end flag is set to “with seismic motion warning detailed information: '00” ”, and at the same time, an update flag, signal identification, seismic motion warning detailed information, and a parity bit are set. At the end of the earthquake motion warning, the start / end flag is set to “No earthquake motion warning detailed information: '11'”.

  Next, the configuration of the TMCC signal configured by the TMCC signal configuration unit 215 and decoded by the TMCC decoding unit 113 will be described with reference to FIGS.

  FIG. 13 shows a TMCC signal configuration (TMCC carrier bit allocation). The TMCC signal is used to transmit information related to the demodulation operation of the receiver, such as a hierarchical configuration and transmission parameters of each OFDM segment.

  The amplitude and phase reference for differential demodulation is given by Wi in FIG.

  The synchronization signal is composed of a 16-bit word. There are two types of synchronization signals, w0 = 0011010111101110 and w1 = 1100101000010001 obtained by bit-inversion thereof, and w0 and w1 are alternately transmitted for each frame. The synchronization signal is used to establish synchronization of the TMCC signal and OFDM frame synchronization. In order to prevent the pseudo synchronization pull-in phenomenon that occurs when the bit pattern of the TMCC information coincides with the synchronization signal, the polarity of the synchronization signal is inverted for each frame. Since the TMCC information is not inverted every frame, pseudo synchronization pull-in can be avoided by inversion every frame.

  The segment format identification is a signal for identifying whether the segment is a differential modulation unit or a synchronous modulation unit. It is composed of 3-bit words, and is assigned “111” in the case of the differential modulation unit and “000” in the case of the synchronous modulation unit. The number of TMCC carriers varies depending on the segment format. When the partial reception segment belongs to the synchronous modulation unit, there is only one TMCC carrier. Even in this case, 3 bits are assigned to the identification signal so that reliable decoding is possible, and the inverted signal has the maximum intersymbol distance.

  The TMCC information is information that assists the demodulation and decoding operations of the receiver, such as system identification, transmission parameter switching index, emergency warning broadcast activation flag, current information, and next information.

  2 bits are assigned to the system identification signal. “00” is set for a system based on the digital terrestrial television broadcasting system, and “01” is set for a digital terrestrial audio broadcasting system with a common transmission system. The remaining values are reserved.

  Current information indicates the current hierarchical configuration and transmission parameters, and next information indicates the transmission parameters after switching.

  When the transmission parameter is switched, the transmission parameter switching index is counted down to notify the receiver of the switching and take the timing. This index usually takes a value of ‘1111’, but when the transmission parameter is switched, 1 is subtracted for each frame from 15 frames before the switching. It should be noted that after “0000”, it returns to “1111”. The switching timing is the next frame synchronization for sending “0000”. That is, the new transmission parameter is applied from the frame returned to ‘1111’. The next information can be set or changed at an arbitrary time before the switching countdown, but cannot be changed during the countdown.

  FIG. 14 shows bit allocation of TMCC information. Further, FIG. 15 shows transmission parameter information included in the current / next information. If there is no unused layer or next information in the transmission parameter information, those bits are set to ‘1’.

  When switching any one or more of transmission parameters and flags (partial reception flag, carrier modulation scheme, convolutional coding rate, interleave length, number of segments) included in the current information and next information in FIG. Count down the indicator. When only the emergency warning broadcast activation flag is switched, the transmission parameter switching index is not counted down.

  FIG. 16 shows the assignment of the emergency warning broadcast activation flag. In emergency alert broadcasting, the activation flag is set to '1' when activation control for the receiver is performed, and the activation flag is set to '0' when activation control is not performed.

  The partial reception flag is set to '1' when the segment at the center of the transmission band is set for partial reception, and is set to '0' otherwise. When segment No. 0 is set for partial reception, the layer is defined as layer A in FIG. If there is no next information, the flag is set to ‘1’.

  The concatenated transmission phase correction amount is control information used in a digital terrestrial audio broadcasting system with a common transmission system. Of the 102 bits of TMCC information, 90 bits are currently defined, but the remaining 12 bits are reserved for future expansion. In operation, all the reserved bits are stuffed with ‘1’.

  The TMCC information B20 to B121 is subjected to error correction coding with a shortened code (184,102) of the difference set cyclic code (273,191). TMCC information requires transmission reliability higher than that of a data signal in order to specify transmission parameters and control a receiver. Considering that it is difficult to share the decoding circuit of the concatenated code in the receiver and that the block code is advantageous from the viewpoint of processing delay, the error correction code of TMCC is a shortened code of the difference set cyclic code (273,191) ( 184,102). Further, since the TMCC signal is transmitted by a plurality of carriers, it is possible to reduce the required C / N and improve the reception performance by analog addition of the signals. With these error correction techniques and addition processing, the TMCC signal can be received with a smaller C / N than the data signal. Note that the synchronization signal and the segment format identification information are excluded from the error correction target, and all bits of a plurality of TMCC carriers are made the same to enable majority determination for each bit including parity bits.

  The operation of emergency alert broadcasting (hereinafter referred to as EWS) will be described.

Follow the procedure below to start and end EWS.
(At start)
(1) The emergency information descriptor in which EWS conditions (start_end_flag, type 1 / type 2 and type code) are set is sent out by the PMT.
(2) The broadcaster sends TMCC's emergency warning broadcast activation flag as '1'.
(3) Start broadcasting with content that can be recognized as emergency warning broadcasting.
(When finished)
(1) Send the emergency warning broadcast activation flag as '0'.
(2) Delete the emergency information descriptor from the PMT.
(Handling of start flag for TMCC emergency warning broadcasting)
On the sending side, the TMCC emergency warning broadcast activation flag is always set to '1' during the period when emergency warning broadcasting is being performed by any service in the TS (network), regardless of the sending hierarchy. . A receiver that supports automatic activation periodically monitors the activation flag for TMCC emergency warning broadcasting.
(Multiple location of emergency information descriptor)
The emergency information descriptor is described in the descriptor area 1 of the PMT of the service that performs the emergency alert broadcast. In order to clearly indicate that an emergency warning broadcast is being performed to an EWS-compatible receiver, the descriptor is always described in the PMT of the emergency warning broadcast service itself. It is up to each broadcaster to determine whether or not to write an emergency information descriptor in the PMT for other services. However, if a service of a different hierarchy is described, it may be ignored by the receiver.
(Changes to the emergency information descriptor)
If it becomes necessary to change the contents (regional code, etc.) described in the emergency information descriptor during the emergency warning broadcast, the EWS termination procedure (TMCC emergency warning start flag is set to '0' After deleting the information descriptor), the changed emergency information descriptor is inserted into the PMT, and the TMCC emergency warning activation flag is set to “1” again. Alternatively, after the TMCC emergency warning broadcast activation flag is set to “0” and the description items are changed while the emergency information descriptor is placed on the PMT, the flag can be set to “1”. In any case, the period from when the emergency alert activation flag is set to “0” to “1” is set to 1 second or more and 4 OFDM Frames or more. In addition, since the receiver continues the EWS process for 90 seconds after the emergency warning activation flag becomes '0', the operator must change the target area for 90 seconds without changing the EWS. The emergency alarm activation flag must be set to '1'.
(EWS reception)
For fixed receivers, perform the following operations (1) to (4).
(1) After the TMCC emergency warning broadcast activation flag changes from “0” to “1”, the emergency information descriptor in the descriptor area 1 in the PMT of the reception TS is monitored.
(2) If start_end_flag = 1 of the emergency information descriptor and area_code corresponds to the area code set in the receiver, the service described in the emergency information descriptor is selected and received.
(3) Continue monitoring the PMT while the TMCC emergency warning broadcast activation flag is “1”.
(4) The emergency alert broadcast ends when the TMCC emergency alert broadcast activation flag becomes '0' or when the PMT emergency information descriptor is deleted. However, emergency warning broadcasts may be resumed due to the operation of “Changes in description of emergency information descriptor”. Therefore, EWS reception processing must be continued for at least 90 seconds after the emergency warning broadcast ends. , It returns to the state before starting (the service of EWS reception is not the last memory). Also, when the service is switched during EWS reception, the EWS reception process ends, but when the emergency warning broadcast activation flag of TMCC changes from “0” to “1”, the EWS reception process is started.
If start_end_flag = 0 in the emergency information descriptor, it is a test broadcast and should not be processed.
In the case of a receiver that cannot receive TMCC when the power is off (standby), the emergency information descriptor in descriptor area 1 in the PMT of the receiving TS is also received even when the emergency warning broadcast activation flag of TMCC is '1' after the power is turned on. And the EWS reception process is started.
In the case of a receiver capable of receiving TMCC when the power is off (standby), the above EWS reception processing is performed even when the power is off (standby).
If there is no corresponding PMT during the EWS reception process, the emergency warning broadcast reception process may be terminated.

  For mobile receivers, the area code set in the receiver may be different from the actual location, so start up operation regardless of area_code in the above fixed receiver operation (2). However, this does not apply when the receiving area can be specified by other means. Other operations are basically the same as the above fixed receiver operation, but it is also effective to perform a warning operation to the viewer such as blinking the portable receiver as an alternative means of the EWS reception process.

FIG. 17 shows the above emergency information descriptor change and receiver operation.
(Emergency warning broadcast test signal operation)
In the emergency alert test broadcast, the start_end_flag value of the emergency information descriptor is used as the end signal side '0' from the beginning. During the test broadcast period, the descriptor will continue to be described in the PMT. When the test broadcast ends, the emergency information descriptor is deleted from the PMT when the TMCC emergency warning broadcast activation flag becomes “0”.

  The operation of receiving the earthquake motion warning information described with reference to FIGS. 3 to 12 will be described with reference to FIG.

  1, the AC carrier in segment No. 0 is extracted and demodulated, and the transmission of earthquake motion warning information is confirmed by the configuration identification shown in FIG. 5, and further synchronization is established. At this time, since the same earthquake motion warning information is transmitted for all AC carriers in segment No. 0, the analog motion addition of all the AC carriers in segment No. 0 allows the earthquake motion warning information to be reduced even with low noise. Demodulation becomes possible. For example, if there are N AC carriers, the amplitude of the seismic motion warning information is N times, whereas the noise is uncorrelated in each AC carrier and therefore does not become N times (in terms of power, the seismic motion warning information Is N times the square of N).

  When the AC decoding unit 116 checks the configuration identification portion shown in FIG. 5 and confirms that the earthquake motion warning information has been sent to the AC, as described in FIG. Is the same as the TMCC sync signal, so that the analog identification of the code identifying the configuration identification and the sync signal and the TMCC sync signal is added to the TMCC for the above reason. Can also reproduce the synchronization signal with low noise.

  Furthermore, as a method of checking the configuration identification part shown in FIG. 5 in the AC decoding unit 116, the 3-bit part from the head of the TMCC synchronization signal and the configuration identification part shown in FIG. 5 of the AC carrier in the segment No. 0 It is possible to determine that the earthquake motion warning information has been sent to the AC when all three bits are correlated.

  When the earthquake motion warning information receiving unit 120 is about to receive the earthquake motion warning information, the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, the frame extraction unit 112, and the AC decoding unit 116 are always operating. . The operations of the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 are performed only for the segment No. 0, that is, the one-segment part when receiving the earthquake motion warning information. Thereby, it can be set as a low power consumption operation | movement rather than processing the 13 segment full band of this digital broadcasting.

  When the earthquake motion warning information receiving unit 120 is about to receive the earthquake motion warning information, the control unit 118 is always operating.

  The AC carrier in segment No. 0 is extracted and demodulated by the AC decoding unit 116, and the earthquake motion warning information start / end flag shown in FIG. 5 is monitored in the sense shown in FIG. 6, and the initial stage, that is, the earthquake motion warning information is generated. In a state where no information is reported, the state of switching from “no earthquake motion warning information” to “with earthquake motion warning information” is monitored.

  The determination unit 117 is in a stopped state at an initial stage, that is, a stage where the earthquake motion warning information is not issued (the earthquake motion warning information start / end flag is “no earthquake motion warning information”).

  Further, at the stage when the earthquake motion warning information is not issued, the demodulation / decoding unit 105, the descrambling unit 106, the demax unit 107, the decoding unit 108, the switching units 114 and 115, the video output unit 109, and the audio output unit 110 are stopped. It is in a state.

  The TMCC decoding unit 113 is always operating when trying to receive an emergency alert broadcast, and monitors the emergency alert broadcast activation flag shown in FIG.

  At this time, the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 are always operating. The operations of the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 need only be performed for segment No. 0, that is, only the one-segment part when receiving an emergency warning broadcast. . Thereby, it can be set as a low power consumption operation | movement rather than processing the 13 segment full band of this digital broadcasting.

  The operation in the case of “with start-up control” is as described with reference to FIGS.

  When an earthquake occurs and seismic motion warning information is issued, that is, when the seismic motion warning information start / end flag is “with seismic motion warning detailed information”, the AC decoding unit 116 starts from “no seismic motion warning detailed information”. The state of switching to “there is detailed earthquake motion warning information” is detected, and “there is detailed earthquake motion warning information”, that is, the information that the earthquake motion warning information is issued is transmitted to the control unit 118. The control unit 118 sends a control signal that causes the determination unit 117 to be in a normal state and the broadcast reception unit 119 to be in a standby state. The AC decoding unit 116 extracts and confirms the seismic motion warning information start / end flag, the seismic motion warning information update flag, the identification flag shown in FIG. 5 when the seismic motion warning information start / end flag becomes “earthquake motion warning detailed information available”. The signal, seismic motion warning information details, CRC-10, and parity bit data are output to the determination unit 117.

  The determination unit 117 that has entered the normal state receives the data from the AC decoding unit 116, performs error correction of the shortened code of the difference set cyclic code, performs CRC-10 error detection, and then performs signal identification shown in FIG. The meaning is confirmed and the meaning shown in FIG. 9 is determined. Then, predetermined processing is performed according to each meaning, and the discrimination information is sent to the control unit 118.

  Based on the discrimination information from the discrimination unit 117, the control unit 118 changes the broadcast reception unit 119 that has been in the standby state from the standby state to the normal state when the identification signal is “detailed information on earthquake motion warning (there is a corresponding area)”. In addition, the switching units 114 and 115 are controlled so as to select a signal from the determination unit 117. The video signal and the audio signal indicating the detailed information on the seismic motion warning from the determination unit 117 are output to the video output unit 109 and the audio output unit 110, respectively, and the seismic motion warning is performed.

  In the above example, the broadcast receiving unit 119 is controlled to be in the standby state. However, only the switching units 114 and 115, the video output unit 109, and the audio output unit 110 may be controlled to be in the standby state.

  Furthermore, although the above shows an example in which the broadcast receiving unit 119 is controlled from the standby state to the normal state, only the switching units 114 and 115, the video output unit 109, and the audio output unit 110 are normally changed from the broadcast receiving unit 119 in the standby state. Alternatively, the standby state switching units 114 and 115, the video output unit 109, and the audio output unit 110 may be controlled to be in a normal state. As a result, there is an effect that an earthquake motion alarm can be performed with lower power consumption than when the broadcast receiving unit 119 is controlled.

  Here, the normal state represents a normally operating state, the standby state does not operate, but can immediately shift to the normal state, and the stopped state does not operate. The standby state of the broadcast receiving unit 119, the switching units 114 and 115, the video output unit 109, and the audio output unit 110 refers to energization so that video output or audio output can be performed quickly when the normal state is reached.

  The detailed operation of the determination unit 117 will be described.

  The discriminating unit 117 confirms the signal identification shown in FIG. 5 and discriminates the meaning shown in FIG. 9. When the identification signal is “Earthquake motion warning detailed information (with corresponding area)”, a buzzer sound or voice A warning by flashing light or a display is displayed. At the same time, the discriminating unit 117 outputs the earthquake detailed information and time information such as the prefecture information and the epicenter information where strong shaking is expected as shown in FIG. 10, FIG. 11 and FIG. Or count down to the time when the earthquake is expected to occur. At the same time, the control unit 118 controls the broadcast receiving unit 119 that has been in the standby state from the standby state to the normal state, and controls the switching units 114 and 115 to select the signal from the determination unit 117. The video signal and the audio signal indicating the detailed information on the seismic motion warning from the determination unit 117 are output to the video output unit 109 and the audio output unit 110, respectively, and the seismic motion warning is performed.

  When the discriminating unit 117 discriminates “earthquake motion warning detailed information (no corresponding area)”, no output to the video output unit 109 or the audio output unit 110 is performed. However, depending on the case, the same operation as “there is a corresponding area” is performed, and the video output unit 109 displays earthquake detailed information such as prefecture information and epicenter information expected to be strongly shaken, or the audio output unit 110. You may make it output by voice.

  When the discriminating unit 117 discriminates the “seismic motion warning detailed information test signal (with relevant area)” or “earthquake motion warning detailed information test signal (no relevant region)”, this is generally performed by the seismic motion warning information receiving unit 120. This is effective when the operation is confirmed in the test mode, ignored in the normal operation mode, and is not output to the video output unit 109 or the audio output unit 110. In the test mode, for example, video information or audio indicating that the mode is the test mode for each operation of “seismic motion warning detailed information (with corresponding area)” or “earthquake motion warning detailed information (without corresponding area)”. Multiplex information.

  The discriminating unit 117 always needs to check the signal identification when the earthquake motion warning information start / end flag is “detailed information on earthquake motion warning”, but at least when the state of the earthquake motion warning information update flag changes, the signal identification is always performed. Confirm.

  Next, the AC decoding unit 116 is monitoring the state where the earthquake motion warning information start / end flag is switched from “with detailed earthquake motion warning information” to “without detailed earthquake motion warning information”, and the earthquake motion warning information start / end flag is “ In the case of “No detailed earthquake motion warning information”, information “No detailed earthquake motion warning information” is transmitted to the control unit 118. The control unit 118 sends a signal that causes the determination unit 117 to stop. The determination unit 117 receives this and enters a stop state. At the same time, the control unit 118 sends a control signal to the broadcast receiving unit 119. The broadcast receiving unit 119 receives this signal, keeps the broadcast receiving unit 119 in a normal state for a certain period of time, and switches the switching units 114 and 115 to the decoding unit 108 side. At this time, the decoded broadcast video signal from the digital broadcast decoding unit 108 received by the channel selection unit 102 is output to the video output unit 109, and the decoded broadcast audio signal is output to the audio output unit 110 for a predetermined time. After the elapse, the broadcast receiving unit 119 is brought into a stopped state. On the other hand, the control unit 118 controls the AC decoding unit 116 to stop data output from the AC decoding unit 116 to the determination unit 117.

  Here, the stop state of the broadcast receiving unit 119 means that the channel selection unit 102, the orthogonal demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 are in one-segment operation, and the demodulation / decoding unit 105, the descrambling unit 106, the demax unit 107, the decoding unit 108, the switching units 114 and 115, the video output unit 109, and the audio output unit 110 are not operating.

  The standby state of the broadcast receiving unit 119 means that the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 operate in the 13-segment full band, and the demodulation / decoding unit 105, the descrambling unit 106, the demax unit 107, and the decoding unit 108 are operating, and the switching units 114 and 115, the video output unit 109, and the audio output unit 110 are not operating.

  The normal state of the broadcast receiving unit 119 is that the channel selection unit 102, the quadrature demodulation unit 103, the FFT unit 104, the synchronous reproduction unit 111, and the frame extraction unit 112 operate in the 13-segment full band, and the demodulation / decoding unit 105, the descrambling unit 106, the demax unit 107, and the decoding unit 108 are operating, and the switching units 114 and 115, the video output unit 109, and the audio output unit 110 are operating.

  Note that the TMCC decoding unit 113 is always operating.

  The above description is based on the assumption that the digital broadcast receiving apparatus 121 is not operating. However, the digital broadcast receiving apparatus 121 is operating, that is, the broadcast receiving unit 119 was originally in a normal state. Sometimes, the following operations are performed.

  When the earthquake motion warning information start / end flag becomes “earthquake motion warning detailed information exists”, the AC decoding unit 116 detects a state of switching from “earthquake motion warning detailed information” to “earthquake motion warning detailed information present”, By the control signal, “there is detailed earthquake motion warning information”, that is, information on which the earthquake motion warning information is issued is transmitted to the control unit 118. The control unit 118 sends a control signal that causes the determination unit 117 to be in a normal state. In addition, the control unit 118 sends a control signal to the broadcast receiving unit 119, and the broadcast receiving unit 119 receives the control signal. The switching unit 114, 115 receives the determination signal from the decoded broadcast video signal from the decoding unit 108. Preparation for switching from the decoded broadcast audio signal from the decoding unit 108 to the audio signal from the determination unit 117 is performed. On the other hand, the AC decoding unit 116 detects and confirms the earthquake motion warning information start / end flag and the earthquake motion warning information update flag shown in FIG. , Identification signal, earthquake motion warning information details, CRC-10, and parity bit data are output to the discriminating unit 117.

  The discriminating unit 117, which is in the normal state by the control signal, receives the data from the AC decoding unit 116, performs error correction of the shortened code of the difference set cyclic code, performs CRC-10 error detection, and then shows FIG. The signal identification is confirmed, and the meaning shown in FIG. 9 is determined. Then, predetermined processing is performed according to each meaning, and the discrimination information is sent to the control unit 118.

  Based on the discrimination information from the discrimination unit 117, the control unit 118 controls the switching units 114 and 115 to select the signal from the discrimination unit 117 when the identification signal is “seismic motion warning detailed information (with applicable area)”. To do. The video signal and the audio signal indicating the detailed information on the seismic motion warning from the determination unit 117 are output to the video output unit 109 and the audio output unit 110, respectively, and the seismic motion warning is performed.

  Next, the AC decoding unit 116 monitors the state of switching from the earthquake motion warning information start / end flag “with detailed earthquake motion warning information” to “no detailed earthquake motion warning information”, and the earthquake motion warning information start / end flag is set to “earth motion. In the case of “no alarm detailed information”, the control unit 118 is informed of “no earthquake motion alarm detailed information”. The control unit 118 sends a signal that causes the determination unit 117 to stop. The determination unit 117 receives this and enters a stop state. At the same time, the control unit 118 sends a control signal to the broadcast receiving unit 119, and the broadcast receiving unit 119 receives this signal, and the switching unit 114 and 115 respectively decode the video signal from the determination unit 117 from the decoding unit 108. Switching to the broadcast video signal is performed from the audio signal from the determination unit 117 to the decoded broadcast audio signal from the decoding unit 108. On the other hand, the control unit 118 controls the AC decoding unit 116 to stop data output from the AC decoding unit 116 to the determination unit 117.

  According to the present embodiment, when the earthquake motion warning information is broadcasted, the switching units 114 and 115 are used to switch from the broadcast video signal and the broadcast audio signal of the normal television broadcast to the video signal and the audio signal of the earthquake motion warning information. There is an effect that it is possible to provide a digital broadcast receiving apparatus that displays image and outputs sound with the highest priority on earthquake motion warning information. In addition, since it is only necessary to have one video output unit and one audio output unit, there is an effect that the cost can be reduced with a simple configuration. Furthermore, there is an effect that the broadcast receiving unit 119 can be automatically activated when the digital broadcast receiving apparatus 121 is not in operation, and when the digital broadcast receiving apparatus 121 is in operation, it is quickly switched to earthquake motion warning information. There is an effect that can be done.

  Here, the TMCC signal and the AC signal transmitted by the digital broadcast transmission apparatus in FIG. 2 will be described with reference to FIGS.

  Also, the TMCC signal and AC signal transmitted by the digital broadcast transmission apparatus of FIG. 2 and the emergency alarm broadcast and earthquake motion alarm reception operation (control method of the control unit 118) of the digital broadcast reception apparatus of FIG. To do. The control unit 118 receives the emergency warning broadcast activation flag information from the TMCC decoding unit 113 and the seismic motion warning information from the seismic motion warning information receiving unit 120, and controls the switching units 114 and 115 when the seismic motion warning should be issued. Then, the video signal for the earthquake motion warning is output to the video output unit 109 and the audio signal for the earthquake motion warning is output to the audio output unit 110.

  FIG. 18 shows the transmission operation timing of the start / end flag of earthquake motion warning information sent by the AC signal and the emergency warning broadcast start flag sent by the TMCC signal. As shown in FIG. 18, first, when the start / end flag is “Earthquake alarm detailed information available: '00” ”, even if it is necessary to carry out emergency alarm broadcasting during the period of“ 00 ”, During the period of '00', the start flag is not set to “with start control: ON”, and the start / end flag is set to “no earthquake motion warning detailed information: '11” ”and the start flag is set to“ with start control: Set to "ON". In this way, the receiving operation of both the seismic motion warning and the emergency warning broadcast overlaps the digital broadcasting receiving device that supports both the seismic motion warning and the emergency warning broadcasting, and the receiving operation of the seismic motion warning and the emergency warning broadcast each other. It is possible to prevent a reception failure from occurring and an output of earthquake motion warning information from being hindered.

The receiver operation at this time will be described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (2) The start / end flag is "Earthquake alarm detailed information available: '00""
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation. (3) The start / end flag is "No seismic motion alarm detailed information: '11'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (4) The start / end flag is “No detailed earthquake alarm information: '11” ”
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting. (5) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to normal operation. In the receiver operation of FIG. 18, when the start / end flag is “earthquake motion warning detailed information: '00” ”, the emergency warning broadcast activation flag is“ with activation control: Since “ON” does not transmit due to overlapping, there is an effect that the receiver can respond to the seismic motion warning operation and the emergency warning broadcast without being hindered.

  FIG. 19 shows the start / end flag of the earthquake motion warning information sent by the AC signal, the signal identification, and the transmission operation timing of the emergency warning broadcast start flag sent by the TMCC signal. As shown in FIG. 19, first, if the start / end flag is “Earthquake motion warning detailed information: '00” ”and the signal identification is“ Earthquake motion warning detailed information (with applicable area): “000” ”. Even if it is necessary to carry out emergency warning broadcasting during the period of '00' and '000', the start flag is not set to "with start control: ON" during the period of '00' and '000'. / After the flag is "No earthquake motion warning detailed information: '11'" or the signal identification is "Earthquake motion warning detailed information (no applicable area): '001" ", the activation flag is activated Controlled: Set to ON. In this way, the receiving operation of both the seismic motion warning and the emergency warning broadcast overlaps the digital broadcasting receiving device that supports both the seismic motion warning and the emergency warning broadcasting, and the receiving operation of the seismic motion warning and the emergency warning broadcast each other. It is possible to prevent a reception failure from occurring and an output of earthquake motion warning information from being hindered. Even if the signal identification is “Test broadcast of detailed earthquake motion warning information (with applicable area): '010” ”, the operation of the signal identification is“ Earthquake alarm detailed information (with applicable area): “000” ”. Follow the case. However, in this case, “Seismic motion warning detailed information test broadcast (no relevant area):‘ 011 ”” is used instead of “Seismic motion warning detailed information (no relevant region):‘ 001 ’”.

The receiver operation at this time will be described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In case of, the receiver operates normally (2) The start / end flag is "Earthquake alarm detailed information available: '00""
Signal identification is “Earthquake alarm detailed information (with applicable area): '000” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation. (3) The start / end flag is "No seismic motion alarm detailed information: '11'"
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (4) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting. (5) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to normal operation. In the receiver operation of FIG. 19, when the start / end flag is “Earthquake alarm detailed information: '00” ”, the emergency alarm broadcast activation flag is“ with activation control: Since “ON” does not transmit due to overlapping, there is an effect that the receiver can respond to the seismic motion warning operation and the emergency warning broadcast without being hindered.

  Or, when the start / end flag is "Earthquake alarm detailed information: '00" "and the signal identification is" Earthquake alarm detailed information (with applicable area): '000 "", the emergency alarm broadcast activation flag is "Activated" Controlled: ON "is not transmitted because it overlaps, so there is an effect that the receiver can respond to the seismic motion warning operation and the emergency warning broadcast without being hindered.

  FIG. 20 shows the start / end flag of the earthquake motion warning information sent by the AC signal, the signal identification, and the transmission operation timing of the emergency warning broadcast start flag sent by the TMCC signal. As shown in FIG. 20, first, if the start / end flag is “earthquake motion warning detailed information: '00” ”and the signal identification is“ earthquake motion warning detailed information (no corresponding area): “001” ” If it becomes necessary to carry out emergency warning broadcasting during the period of 00 ', 001', it will not prevent the activation flag from being "with startup control: ON" during the period of '00', '001'. . By doing in this way, there exists an effect which can broadcast emergency alert broadcast immediately. Even if the signal identification is “Test broadcast of detailed earthquake motion warning information (no applicable area): '011” ”, the operation is also performed when the signal identification is“ Earthquake alarm detailed information (no applicable area): “001” ”. Follow the case.

First, when the start flag is "No start control: OFF", an earthquake motion warning is issued and the start / end flag is "Earth motion alarm detailed information: '00""and the signal identification is" Earth motion alarm detailed information (no applicable area) " : In case of "001", if it is necessary to start the emergency alert broadcasting during that period, the receiver operation when the operation flag for that period is "Startup control: ON" is permitted. Will be explained.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In case of, the receiver operates normally (2) The start / end flag is "Earthquake alarm detailed information available: '00""
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation. (3) The start / end flag is "Earthquake motion alarm detailed information: '00'"
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting (4) The start / end flag is "Detailed information on earthquake motion warning: '00'"
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation. (5) The start / end flag is "No seismic motion alarm detailed information: '11'"
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to the normal operation. In the receiver operation of FIG. 20, the start / end flag is “earthquake motion warning detailed information:“ 00 ”” and the signal identification is “earthquake motion warning detailed information (no applicable area):“ In the case of 001 '", since it is not a corresponding area of the earthquake motion warning, there is an effect that the emergency warning broadcast can be performed with priority over the earthquake motion warning operation.

  Even if the signal identification is “Test broadcast of detailed earthquake motion warning information (with applicable area): '010” ”, the operation of the signal identification is“ Earthquake alarm detailed information (with applicable area): “000” ”. Follow the case. In addition, when the signal identification is “Test broadcast of earthquake motion warning detailed information (no applicable area): '011” ”, the operation is also performed when the signal identification is“ Earthquake alarm detailed information (no applicable area): “001” ”. Follow the case. Since the receiver is a test broadcast, it does not respond in normal operation, but during maintenance such as in the receiver test mode, it is displayed that it is a test broadcast, and each signal identification is “Earthquake motion warning detailed information (with applicable areas): '000” In the case of “”, the signal identification conforms to the receiver operation in the case of “Seismic motion warning detailed information (no applicable area):“ 001 ””.

  Next, regarding the TMCC signal and AC signal transmitted by the digital broadcast transmission apparatus of FIG. 2 and the emergency alarm broadcast and earthquake motion alarm reception operation (control method of the control unit 118) of the digital broadcast reception apparatus of FIG. This will be described with reference to FIGS. 21, 22, 23, and 24. FIG.

  The control unit 118 receives the emergency warning broadcast activation flag information from the TMCC decoding unit 113 and the seismic motion warning information from the seismic motion warning information receiving unit 120, and controls the switching units 114 and 115 when the seismic motion warning should be issued. Then, the video signal for the earthquake motion warning is output to the video output unit 109 and the audio signal for the earthquake motion warning is output to the audio output unit 110. The operation will be described below.

FIG. 21 shows the start / end flag and signal identification of the earthquake motion warning information sent by the AC signal, the transmission operation timing of the emergency warning broadcast start flag sent by the TMCC signal, and the receiving operation thereof. As shown in FIG. 21, first, if the start / end flag is “Earthquake alarm detailed information:“ 11 ”” and the emergency warning broadcast starts and the activation flag is “with activation control: ON”, If it is necessary to issue a seismic motion warning during a period with start control, even if the start flag is "Start control: ON", the start / end flag is set to "With detailed seismic alarm information: '00'" Start operation of earthquake alarm. The receiver operation at this time will be described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (2) The start / end flag is "No detailed earthquake alarm information: '11'"
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting (3) The start / end flag is "Detailed information on earthquake motion warning: '00'"
Signal identification is “Earthquake alarm detailed information (with applicable area): '000” ”
The startup flag is "Startup control available: ON"
(4) Start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver ends the seismic motion warning operation and responds to the emergency alert broadcast.
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to the normal operation. In the receiver operation of FIG. 21, when the start / end flag is “detailed information on earthquake motion warning: '00” ”, the earthquake motion warning operation has priority over the emergency warning broadcast. Because it is implemented, the emergency warning broadcast has the effect of not preventing the earthquake motion warning.

  Or, if the start / end flag is “Earthquake motion warning detailed information: '00” ”and the signal identification is“ Earthquake motion warning detailed information (with applicable area): “000” ”, the earthquake motion warning operation is performed from the emergency warning broadcast. Because it is prioritized, emergency alert broadcasting has the effect of not preventing information output in the area of the earthquake motion warning from being affected.

FIG. 22 shows the start / end flag and signal identification of the seismic motion warning information sent by the AC signal, the transmission operation timing of the emergency warning broadcast activation flag sent by the TMCC signal, and the receiving operation thereof. As shown in FIG. 22, first, if the emergency warning broadcast starts and the activation flag is “with activation control: ON” during the period when the start / end flag is “No detailed earthquake motion warning information: '11” ”, If it is necessary to issue a seismic motion warning during a period with start control, even if the start flag is "Start control: ON", the start / end flag is set to "With detailed seismic alarm information: '00'" Start operation of earthquake alarm. At this time, the receiver operation when the signal identification is “detailed information on earthquake motion warning (no corresponding area): '001” ”will be described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (2) The start / end flag is "No detailed earthquake alarm information: '11'"
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting (3) The start / end flag is "Detailed information on earthquake motion warning: '00'"
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "Startup control available: ON"
In the case of, the receiver continues the emergency warning broadcast. (4) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver continues the emergency warning broadcast. (5) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to normal operation. In the receiver operation of FIG. 22, the start / end flag is “earthquake motion warning detailed information: '00” ”and the signal identification is“ earthquake motion warning detailed information (no applicable area): “ In the case of 001 '", since it is not a corresponding area of the earthquake motion warning, there is an effect that the emergency warning broadcast can be performed with priority over the earthquake motion warning operation.

FIG. 23 shows the start / end flag and signal identification of the earthquake motion warning information sent by the AC signal, the transmission operation timing of the emergency warning broadcast activation flag sent by the TMCC signal, and the reception operation thereof. As shown in FIG. 23, first, if the start flag is “No start control: OFF”, the seismic motion warning is issued and the start / end flag is “Earthquake motion warning detailed information: '00” ”. The operation of the receiver when the emergency warning broadcast needs to be started during the period with the detailed earthquake motion warning information and the transmission operation with the activation flag “with activation control: ON” during that period is permitted will be described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (2) The start / end flag is "Earthquake alarm detailed information available: '00""
Signal identification is “Earthquake alarm detailed information (with applicable area): '000” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation. (3) The start / end flag is "Earthquake motion alarm detailed information: '00'"
Signal identification is “Earthquake alarm detailed information (with applicable area): '000” ”
The startup flag is "Startup control available: ON"
In the case of, the receiver continues the seismic motion warning operation (4) The start / end flag is “No seismic motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting. (5) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to the normal operation. In the receiver operation of FIG. 23, when the start / end flag is “detailed information on earthquake motion warning: '00” ”, the earthquake motion warning operation has priority over the emergency warning broadcast. Because it is implemented, the emergency warning broadcast has the effect of not preventing the earthquake motion warning.

  Or, if the start / end flag is “Earthquake motion warning detailed information: '00” ”and the signal identification is“ Earthquake motion warning detailed information (with applicable area): “000” ”, the earthquake motion warning operation is performed from the emergency warning broadcast. Because it is prioritized, emergency alert broadcasting has the effect of not preventing information output in the area of the earthquake motion warning from being affected.

FIG. 24 shows the start / end flag and signal identification of the earthquake motion warning information sent by the AC signal, the transmission operation timing of the emergency warning broadcast start flag sent by the TMCC signal, and the reception operation thereof. As shown in FIG. 24, first, an earthquake motion warning is issued in the period when the activation flag is “no activation control: OFF”, and the start / end flag is “detailed information on earthquake motion alarm: '00” ”and the signal identification is“ earthquake motion alarm ”. Detailed information (no applicable area): When “001” is set, if it is necessary to start emergency alert broadcasting during that period, the operation flag for that period is “with start control: ON”. The operation of the receiver when permitted is described.
(1) The start / end flag is “No detailed earthquake alarm information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver operates normally (2) The start / end flag is "Earthquake alarm detailed information available: '00""
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "No startup control: OFF"
In the case of, the receiver supports the seismic motion alarm operation (3) The start / end flag is “Earthquake motion alarm detailed information: '00” ”
Signal identification is “Seismic motion warning detailed information (no applicable area): '001” ”
The startup flag is "Startup control available: ON"
In the case of, the receiver supports emergency warning broadcasting. (4) The start / end flag is "No detailed earthquake alarm information: '11'"
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "Startup control available: ON"
In the case of, the receiver continues the emergency warning broadcast. (5) The start / end flag is “No earthquake motion warning detailed information: '11” ”
The signal identification is "No detailed earthquake alarm information: '111'"
The startup flag is "No startup control: OFF"
In the case of, the receiver returns to the normal operation. In the receiver operation of FIG. 24, the start / end flag is “earthquake motion warning detailed information: '00” ”and the signal identification is“ earthquake motion warning detailed information (no applicable area): “ In the case of 001 '", since it is not a corresponding area of the earthquake motion warning, there is an effect that the emergency warning broadcast can be performed with priority over the earthquake motion warning operation.

  Even if the signal identification is “Test broadcast of detailed earthquake motion warning information (with applicable area): '010” ”, the operation of the signal identification is“ Earthquake alarm detailed information (with applicable area): “000” ”. Follow the case. In addition, when the signal identification is “Test broadcast of earthquake motion warning detailed information (no applicable area): '011” ”, the operation is also performed when the signal identification is“ Earthquake alarm detailed information (no applicable area): “001” ”. Follow the case. Since the receiver is a test broadcast, it does not respond in normal operation, but during maintenance such as in the receiver test mode, it is displayed that it is a test broadcast, and each signal identification is “Earthquake motion warning detailed information (with applicable areas): '000” In the case of “”, the signal identification conforms to the receiver operation in the case of “Seismic motion warning detailed information (no applicable area):“ 001 ””.

  Hereinafter, an embodiment of the determination unit 117, which is the main block of the present invention, will be described with reference to FIG.

  2501 is an input of data from the AC decoding unit 116, 2502 is an error correction detection unit, 2503 is an input of a control signal from the control unit 118, 2504 is a clock unit, 2505 is a current time setting unit, 2506 is a data judgment storage unit, 2507 Is a comparison determination unit, 2508 is a buzzer sound generation unit, 2509 is a processing unit, 2510 is a video signal output, 2511 is an audio signal output, and 2512 is an output of determination information to the control unit 118.

  The clock unit 2504 always operates even when the determination unit 117 is in a stopped state, and indicates an accurate time. Use of GPS (Global Positioning System), the use of a radio clock function that automatically corrects errors by receiving standard radio waves, and the use of functions that automatically update the correct time from the outside, such as the Internet, can be considered as methods for obtaining accurate time. Although not limited to these, it is not preferable to obtain time information from digital broadcasting for the reason described later.

  The current time setting unit 2505, the data determination storage unit 2506, the comparison determination unit 2507, the buzzer sound generation unit 2508, and the processing unit 2509 operate when the determination unit 117 is in the “standby state” and “normal state” and is in the “stop state”. It does not work when.

  When the determination unit 117 receives a control signal from the control unit 118 via the input 2503 and enters a standby state or a normal state, the current time setting unit 2505 always extracts and sets the current time from the clock unit 2504. When the AC decoding unit 116 determines that the earthquake motion warning information start / end flag “there is detailed earthquake motion warning information”, the AC decoding unit 116 sends the information “there is detailed earthquake motion warning information” to the control unit 118. The control unit 118 sends a control signal for making the determination unit 117 from the stopped state to the normal state via the input 2503. Thereafter, the seismic motion warning information start / end flag and the seismic motion warning information update flag shown in FIG. 5 are sent from the AC decoding unit 116 to the error correction detection unit 2502 of the determination unit 117 via the input 2501 by a control signal from the control unit 118. , Identification signal, earthquake motion warning information details, CRC-10, and parity bit data are output. The error correction detection unit 2502 performs error correction of the shortened code of the differential cyclic code, and then performs CRC-10 error detection. When there is no error, the data from the AC decoding unit 116 is confirmed by the data determination storage unit 2506 for the signal identification shown in FIG. 5 to determine the meaning shown in FIG. In the case of “There is a corresponding area”, the information shown in FIG. 10, FIG. 11, and FIG. 12 is stored. The time information is stored and simultaneously compared with the current time of the current time setting unit 2505 by the comparison determination unit 2507. The sent time information in the data judgment storage unit 2506 is the current time information of the broadcasting station when the broadcasting station transmits, and has a predetermined accuracy. In addition to this, the processing delay of the broadcasting station, the propagation delay of the broadcast radio wave reaching the receiver, the processing delay of the digital broadcast receiver 121 that receives this, and the time taking into account the accuracy of the clock unit 2504, all of these are added at the maximum Since the time information in the data determination storage unit 2506 and the current time of the current time setting unit 2505 do not deviate beyond the positive / negative (advance / delay) of the measured time, the comparison determination unit 2507 uses this as a threshold value, and the comparison determination unit 2507 If it is within the hold value, it is determined as “normal”, and if it exceeds the threshold value, it is determined as “abnormal”. The comparison determination unit 2507 controls the buzzer sound generation unit 2508 to generate a buzzer sound when it is determined that “the area is present” and “normal”. As a result, broadcast waves when earthquake motion warning information has been issued in the past are accumulated (hereinafter referred to as RF capture), and even when an attack such as re-transmission is received, the RF captured signal Has time information at the time of RF capture, the current time of the current time setting unit 2505 exceeds the threshold value, and the comparison determination unit 2507 determines that it is “abnormal” and does not generate a buzzer sound. There is an effect that it is possible to prevent a malfunction in which a buzzer sound is generated by the buzzer sound generator 2508. Instead of the buzzer sound generating unit 2508, a warning may be generated by voice or a warning display by flashing light. The judgment information of the comparison judgment unit 2507 is sent to the processing unit 2509 and also sent to the control unit 118 via the output 2512.

  The processing unit 2509 stores time information, detailed earthquake information such as prefecture information and epicenter information in the data determination storage unit 2506, and at the same time, prepares output from the video signal output 2510 and prepares output from the audio signal output 2511. I do. For example, although not shown in FIG. 25, the time until the arrival of the earthquake is calculated from the installation location of the digital broadcast receiving apparatus stored in advance and the detailed earthquake information.

  Output signals are output from the video signal output 2510 and the audio signal output 2511 only in the “normal state”.

  When the judgment information from the comparison judgment unit 2507 is “normal”, the video signal output 2510 and the audio signal output 2511 receive the signal from the processing unit 2509 and output the video signal output and the audio signal output of the earthquake motion warning information, respectively. To do. 11 and 12 are detailed earthquake information and time information such as prefectural information and epicenter information where strong shaking is expected, or countdown information until a time when an earthquake is expected to occur.

  The AC decoding unit 116 monitors the state of switching from the earthquake motion warning information start / end flag “with detailed earthquake motion warning information” to “without detailed earthquake motion warning information”, and the earthquake motion warning information start / end flag is set to “detailed information about earthquake motion warning”. When “None” is set, the control unit 118 is informed of “no seismic motion warning detailed information”, and the control unit 118 sends a signal for stopping the discriminating unit 117. The discriminating unit 117 receives the signal via the input 2503. Receiving this, it will be in a stop state. That is, except for the clock unit 2504, all blocks stop operating.

  According to the embodiment of FIG. 25, it is possible to prevent malfunction of warning generation by comparing the time information with the current time.

  Further, since the buzzer sound is generated, there is an effect that the occurrence of the earthquake can be quickly notified by the buzzer sound.

  A second embodiment according to the present invention will be described with reference to FIGS. 26 and 27. FIG.

  FIG. 26 is a block diagram showing a configuration of a digital broadcast receiving apparatus that receives earthquake motion warning information transmitted using an AC signal included in segment number # 0 transmitted by the digital broadcast transmitting apparatus of FIG.

  Reference numerals 2601 and 2602 denote synthesizing units, and FIG. 27 shows details thereof.

  The difference between FIG. 1 and FIG. 26 is that the switching units 114 and 115 are replaced by combining units 2601 and 2602, respectively.

  Hereinafter, the synthesis units 2601 and 2602 will be described with reference to FIG. FIG. 27 also shows the decoding unit 108 in detail.

  2701 is an input of a compressed program video signal, a compressed program audio signal, and a digital signal of a data signal from the descrambling unit 106, and 2703 is a moving picture and a still image for the compressed program video signal and the video data signal. A video decoding unit that performs decoding processing on each of the image, character graphic, and subtitle, 2704 is an audio decoding unit that performs decoding processing on the compressed program audio signal and audio data signal, and 2705 displays a moving image. A moving picture plane display memory, 2706 is a still picture plane display memory for displaying a still picture, 2707 is a moving picture still picture switching plane display memory showing information for switching a moving picture and a still picture for each pixel, and 2708 is a character Character graphic plane display memory for displaying graphics 2709 is a subtitle plane display memory for displaying subtitles. 2710 is a switching unit that switches between a moving image from the moving image plane display memory 2705 and a still image from the still image plane display memory 2706 for each pixel based on information in the moving image still image switching plane display memory 2707, and 2711 is a switching unit 2710. An adjustment unit that adjusts the synthesis ratio of the output signal, 2712 is an adjustment unit that adjusts the synthesis ratio of the output signal of the character / graphic plane display memory 2708, 2713 is an addition unit that synthesizes the output signals of the adjustment units 2711 and 2712, and 2714 is an addition An adjustment unit that adjusts the output signal combining ratio of the unit 2713, 2715 is an adjustment unit that adjusts the output signal combining ratio of the subtitle plane display memory 2709, and 2716 is an addition unit that combines the output signals of the adjustment units 2714 and 2715. Thus, the decoding unit 108 is configured. The adder 2716 outputs a broadcast video signal, and the audio system decoder 2704 outputs a broadcast audio signal.

  Reference numeral 2717 denotes data input from the AC decoding unit 116.

  Reference numeral 2718 denotes an adjustment unit that adjusts the composite ratio of the broadcast video signal that is the output signal of the adder 2716, 2719 denotes an adjustment unit that adjusts the composite ratio of the video signal of the earthquake motion warning information that is the output signal of the determination unit 117, and 2720 denotes an adjustment. An adder that synthesizes the output signals of the units 2718 and 2719, and 2721 is an output of a synthesized video signal that is an output signal of the adder 2720.

  Reference numeral 2722 denotes an adjustment unit that adjusts the synthesis ratio of the broadcast audio signal that is an output signal of the audio system decoding unit 2704; 2723, an adjustment unit that adjusts the synthesis ratio of the audio signal of the earthquake motion warning information that is the output signal of the determination unit 117; Is an adding unit that synthesizes the output signals of the adjusting units 2722 and 2723, and 2725 is an output of a synthesized speech signal that is an output signal of the adding unit 2724, and constitutes the synthesizing unit 2602.

  A method of synthesizing the broadcast video signal of the decoding unit 108 will be described.

  The scrambled TS signal for copyright protection is descrambled by the descrambling unit 106 and input from the input 2701 to the demax unit 107. The demux unit 107 extracts a desired compressed program video signal, compressed program audio signal, and data signal, and outputs them to the decoding unit 108. At this time, the desired compressed program video signal and video data signal are input to the video decoder 2703, and the desired compressed program audio signal and audio data signal are input to the audio decoder 2704. .

  Here, the desired compressed program video signal and video data signal and the desired compressed program audio signal and audio data signal are converted into character graphics, still images, and moving images by a data stream or a data carousel. Transmission is performed as monophonic audio media. These data are decoded and separated into individual encoded monomedia data.

  The encoded monomedia data is decoded by each decoder. Audio is decoded by audio system decoding, video signal is decoded by video, character / figure / still image is decoded by character / figure / still image decoding, subtitle / character super is decoded by subtitle / character super decoding.

  In the decoded video signal, the character graphic, still image, and moving image are displayed by the character graphic plane display memory 2708, the still image plane display memory 2706, and the moving image plane display memory 2705, respectively, and the moving image still image switching plane display memory 2707 is displayed. The synthesis is performed under the control. Note that scaling may be performed when displaying on each plane.

  In the multimedia service, presentation control of these mono-media is controlled by a framework defined by multimedia coding. Further, the caption super is displayed on the caption plane display memory 2709 by the encoding method of caption and character super, and the presentation control is performed.

  The switching unit 2710 switches the moving image from the moving image plane display memory 2705 and the still image from the still image plane display memory 2706 for each pixel based on information in the moving image still image switching plane display memory 2707. The output signal of the switching unit 2710 is adjusted by the adjusting unit 2711 so that the synthesis ratio is “1−α1” times. On the other hand, the character graphic that is an output signal from the character graphic plane display memory 2708 is adjusted by the adjustment unit 2712 to the composition ratio “α1” times. Here, α1 represents opacity and takes a value from 0 to 1. The adder 2713 combines the output signals of the adjusters 2711 and 2712. When α1 is 0, only the output signal of the switching unit 2710 is obtained, and when α1 is 1, only the character graphic that is an output signal from the character graphic plane display memory 2708 is obtained.

  The output signal of the adding unit 2713 is adjusted by the adjusting unit 2714 to be “1−α2” times as a composite ratio. On the other hand, the subtitle which is the output signal from the subtitle plane display memory 2709 is adjusted by the adjusting unit 2715 to the composition ratio “α2” times. Here, α2 represents opacity and takes a value from 0 to 1. An adder 2716 combines the output signals of the adjusters 2714 and 2715. When α2 is 0, only the output signal of the adder 2713 is provided, and when α2 is 1, only the caption that is an output signal from the caption plane display memory 2709 is provided.

  As described above, subtitles, character graphics, still images, and moving images are combined, and a broadcast video signal is output from the adder 2716.

  In the synthesizing unit 2601, the broadcast video signal from the adding unit 2716 is adjusted by the adjusting unit 2718 to the synthesis ratio “1-α3” times, while the video signal of the earthquake motion warning information that is the output signal from the determining unit 117 is adjusted. In 2719, the combination ratio is adjusted to "α3" times, the output signals of the adjustment units 2718 and 2719 are combined in the addition unit 2720, and the output signal of the addition unit 2720 is output to the output 2721 as a composite video signal. Here, α3 represents opacity and takes a value from 0 to 1. When α3 is 0, the combined video signal output from the output 2721 is only the broadcast video signal from the adder 2716, and α3 is 1. In this case, the combined video signal output from the output 2721 is only the video signal of the earthquake motion warning information that is the output signal from the determination unit 117.

  In the synthesis unit 2602, the broadcast audio signal from the audio system decoding unit 2704 is adjusted to a synthesis ratio “1−α4” times by the adjustment unit 2722, and on the other hand, the audio signal of the earthquake motion warning information that is the output signal from the determination unit 117 The adjustment unit 2723 adjusts the combination ratio to “α4” times, the output signals of the adjustment units 2722 and 2723 are combined by the addition unit 2724, and the output signal of the addition unit 2724 is output to the output 2725 as a synthesized speech signal. Here, α4 represents a synthesis rate, and takes a value from 0 to 1. When α4 is 0, the synthesized audio signal output from the output 2725 is only the broadcast audio signal from the audio decoding unit 2704, and α4 is In the case of 1, the synthesized voice signal output from the output 2725 is only the voice signal of the earthquake motion warning information that is the output signal from the determination unit 117.

  In this embodiment, by setting α3 and α4 to a value larger than 0.5, there is an effect that the video signal and the audio signal of the earthquake motion warning information can be presented more conspicuously than the broadcast video signal and the broadcast audio signal, respectively. .

  The discriminating unit 117 uses the character font information and other display information of the decoding unit 108 when creating a video signal of earthquake motion warning information, or the decoding unit 108 when creating an audio signal of earthquake motion warning information. By using the buzzer sound type information possessed by the digital broadcast receiver 121, it is possible to have a circuit configuration that does not require the digital broadcast receiving apparatus 121 to have duplicate information. In this case, the low-cost determination unit 117 is used. There is an effect that can be.

  In the embodiment of FIG. 26, the control unit 118 in FIGS. 18, 19, 20, 21, 22, 23, and 24 also includes emergency warning broadcast activation flag information from the TMCC decoding unit 113, When the seismic motion warning information is input from the seismic motion warning information receiving unit 120 and the seismic motion warning is to be issued, the synthesis units 2601 and 2602 are controlled, and the seismic motion warning video signal is sent to the video output unit 109 and the seismic motion warning audio signal. Can be output to the audio output unit 110.

  Embodiment 3 according to the present invention will be described with reference to FIG.

  In FIG. 28, the synthesis unit 2601 of FIG. 27 is omitted, and the video signal of the earthquake motion warning information is directly written into the caption plane display memory 2709 of the decoding unit 108. The subtitle plane display memory 2709 updates the video signal of the seismic motion warning information from the determination unit 117 after updating the decoded subtitle from the video system decoding unit 2703. Alternatively, the subtitle plane display memory 2709 does not write the decoded subtitle from the video system decoding unit 2703 at the place where the video signal of the earthquake motion warning information from the determination unit 117 is written. Also, α2 is set to a value larger than 0.5.

  Furthermore, when a caption is displayed in the caption plane display memory 2709, the video signal of the earthquake motion warning information can be displayed avoiding the display portion. In addition to subtitles, it is also possible to display a video signal of earthquake motion warning information by avoiding a display portion where a broadcaster emphasizes or requires video display in data broadcasting or the like. Furthermore, when the receiver displays an image that seems to be important, the image signal of the earthquake motion warning information can be displayed by avoiding the display portion.

  As described above, there is an effect that the video signal of the earthquake motion warning information can be synthesized and presented more conspicuously than the broadcast video signal without increasing the video system synthesis unit.

  The discriminating unit 117 uses the character font information and other display information of the decoding unit 108 when creating a video signal of earthquake motion warning information, or the decoding unit 108 when creating an audio signal of earthquake motion warning information. By using the buzzer sound type information possessed by the digital broadcast receiver 121, it is possible to have a circuit configuration that does not require the digital broadcast receiving apparatus 121 to have duplicate information. In this case, the low-cost determination unit 117 is used. There is an effect that can be.

  Embodiment 4 according to the present invention will be described with reference to FIGS. 29 and 30. FIG.

  FIG. 29 is a block diagram showing a configuration of a digital broadcast receiving apparatus that receives earthquake motion warning information transmitted using an AC signal included in segment number # 0 transmitted by the digital broadcast transmitting apparatus of FIG.

  Reference numeral 2901 denotes an output unit for earthquake motion warning information, and FIG.

  The difference between FIG. 1 and FIG. 29 is that the output 2901 of the earthquake motion warning information is separated from the video output unit 109 and the audio output unit 110 which are the output parts of the broadcast receiving unit 119.

  In FIG. 30, the video signal output from the video signal output 2510 of the earthquake motion warning information from the processing unit 2509 described in FIG. 25 and the audio signal output from the audio signal output 2511 are respectively output to the video output unit 3001. The audio output unit 3002 is used for output. Note that the video output unit 3001 may be a video display such as a flash device that blinks light or a video display using a simple video display device such as a 7-segment display.

  29, the earthquake has occurred and the earthquake motion warning information start / end flag becomes “earthquake motion warning detailed information”, and the identification signal is “earthquake motion warning detailed information (there is a corresponding area). ”, The video output unit 109 of the broadcast receiving unit 119 outputs the video signal and the audio signal indicating the detailed information on the earthquake motion warning from the discriminating unit 117 using the video output unit 3001 and the audio output unit 3002, respectively. Control is performed so that the output from the audio output unit 110 does not interfere with the video signal and audio signal indicating the earthquake motion warning detailed information output from the video output unit 3001 and the audio output unit 3002. Specifically, the video of the video output unit 109 is darkened, a still image is displayed, a message indicating that seismic motion warning detailed information has been issued, and the audio of the audio output unit 110 is muted (not output) ), Turn down the volume, etc.

  In this embodiment, there is an effect that the video signal and the audio signal of the earthquake motion warning information can be made more conspicuous than the broadcast video signal and the broadcast audio signal, respectively. In addition, since it has a video output unit and audio output unit independent of the broadcast receiving unit, even if the video output unit and audio output unit of the broadcast receiving unit are not outputting, it can be quickly started up and earthquake motion warning information can be displayed. There is an effect that can be output.

  Also in the embodiment of FIG. 29, the control unit 118 in FIGS. 18, 19, 20, 21, 21, 22, 23, and 24 also includes the emergency warning broadcast activation flag information from the TMCC decoding unit 113 and the like. When the seismic motion warning information is input from the seismic motion warning information receiving unit 120 and the seismic motion warning is to be issued, the output unit 2901 outputs the seismic motion warning and controls the broadcast receiving unit 119 so as not to prevent the output of the seismic motion warning. To do.

  1, 26, and 29 may be either a 13-segment receiver or a one-segment receiver.

  Embodiment 5 according to the present invention will be described.

  This embodiment relates to a transmission method in the case of transmitting earthquake motion warning information using an AC signal included in segment number # 0 in the terrestrial digital television broadcasting system.

  When the digital broadcast receiving apparatus receives the earthquake motion warning information, the signal identification in the earthquake motion warning information is first referred to. When this value is “000” indicating “earthquake motion warning detailed information (there is a corresponding area)”, the digital broadcast receiving apparatus issues a seismic motion warning to the user. The detailed information on the earthquake motion warning includes information indicating the target area of the earthquake motion warning (hereinafter referred to as target region information) and information on the source of the earthquake motion warning (hereinafter referred to as earthquake source information). When the page type is “0”, it is target area information, and when it is “1”, it is epicenter information.

  The target area information is compared with, for example, installation location information set in advance in the digital broadcast receiving apparatus. If the installation location is included in the target area, the target area information is used when performing processing such as giving a stronger warning. .

  The epicenter information is used, for example, when deriving the time from the seismic center until the earthquake motion reaches the installation location of the digital broadcast receiver. Since the propagation speed of earthquake motion is almost constant, an approximate value can be obtained for this time if the distance from the epicenter to the installation location is known. Knowing this time, you can take the maximum possible action in a limited amount of time, such as extinguishing the gas stove or hiding yourself in a safe place.

  For this reason, the target area information and the epicenter information are very important, and it is desirable to transmit both.

  Some digital broadcast receivers may not perform the seismic motion warning information acquisition process unless the power is turned on. For this reason, depending on the transmission method of such information, there may be a problem that it takes time to obtain both the target area information and the epicenter information.

  In order to solve this problem, in the embodiment according to the present invention, these pieces of information are alternately transmitted one by one.

  A specific example of the above transmission method will be described with reference to FIGS. 33 (a) and 33 (b). FIGS. 33 (a) and 33 (b) show the update / start flag of the earthquake motion warning when the earthquake motion warning information is transmitted using the AC signal included in the segment number # 0 in the terrestrial digital television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time. (3301) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3302) If an earthquake occurs and the seismic motion warning is triggered by this, the start / end flag transitions to “00” indicating “start”, and the update flag transitions to the initial value “00”. When transmitting epicenter information indicating the time of occurrence of seismic motion and the location and depth of the epicenter, the page type transitions to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3303) When transmitting the target area information indicating the target area of the earthquake motion warning, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the epicenter information, in FIGS. 33 (a) and 33 (b), “ ― ”.

  Thereafter, the epicenter information 3302 and the target area information 3303 are alternately transmitted one by one. The end of the seismic motion warning is triggered by the fact that the organization that issued the seismic motion warning (for example, the Japan Meteorological Agency) instructs the end of the reporting and receives it ("end report reception" in FIG. 33B). When ending the earthquake motion warning, as shown in FIG. 33B, the start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are respectively set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIGS. 33 (a) and 33 (b), when the seismic motion warning is started in the order of the epicenter information and the target area information, the epicenter information 3304 is transmitted during the transmission of this combination, for example, Even if the end report is received while the information 3305 is transmitted, the seismic motion warning is maintained until the target area information 3305 serving as a break is transmitted.

  As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is transmitted in the order of the epicenter information and the target area information, and an end report is received during the transmission of this combination, the start / end flag, the update flag, and the page are immediately transmitted at the next transmission timing. The type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3301) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3302) When it is detected that an earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving apparatus changes the operation state from the normal operation state to the earthquake motion warning response state.

  In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted one by one, the digital broadcast receiving apparatus acquires at least one or more of these combinations. The epicenter information 3302 in FIG. 33A and the target area information 3303 that follows it correspond to this. As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3306) After the occurrence of earthquake motion, the contents of the epicenter information and the target area information may be updated as detailed information gathers. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted one by one, the digital broadcast receiving apparatus reacquires at least one of these combinations. The epicenter information 3306 in FIG. 33 (a) and the target area information that follows it correspond to this. Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3308) Upon detecting that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the earthquake motion warning response state to the normal operation state. At this time, all the operations such as warning display that have been performed so far are terminated, and the normal operation state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. The target area information of “0” is alternately transmitted one by one. Thereby, each information can be obtained promptly.

  Embodiment 6 according to the present invention will be described.

  The difference from the fifth embodiment is that at least two or more epicenter information and target area information are transmitted alternately.

  In information transmission using an AC signal, error correction and CRC-10 error detection of a shortened code of a difference set cyclic code are performed as described above. In the present embodiment, at least two or more of the epicenter information and the target area information are alternately transmitted to provide further redundancy and improve the reliability of the information.

  A specific example of the transmission method will be described with reference to FIGS. 34 (a) and 34 (b). FIGS. 34 (a) and 34 (b) show the update / start flag of the earthquake motion warning when the earthquake motion warning information is transmitted using the AC signal included in the segment number # 0 in the digital terrestrial television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time.

  In FIG. 34 (a) and FIG. 34 (b), the epicenter information and the target area information are alternately transmitted two by two.

  (3401) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3402) If an earthquake occurs and the seismic motion warning is triggered by this, the start / end flag transitions to “00” indicating “start”, and the update flag transitions to the initial value “00”. When transmitting epicenter information indicating the time of occurrence of seismic motion and the location and depth of the epicenter, the page type transitions to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3403) In order to increase the redundancy, the same epicenter information as 3402 is transmitted again.

  (3404) When transmitting the target area information indicating the target area of the earthquake motion warning, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described at the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 34 (a) and 34 (b), “ ― ”.

  (3405) In order to increase the redundancy, the same target area information as 3404 is transmitted again.

  From then on, epicenter information and target area information will be transmitted alternately two by two. Specifically, the epicenter information 3402 and 3403 and the target area information 3404 and 3405 are alternately transmitted.

  The end of the seismic motion warning is triggered by the fact that the organization that issued the seismic motion warning (for example, the Japan Meteorological Agency) instructs the end of the reporting and receives it ("end report reception" in FIG. 34 (b)). When ending the earthquake motion warning, as shown in FIG. 34 (b), the start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIG. 34 (a) and FIG. 34 (b), when the seismic motion warning is started in the order of the epicenter information, the epicenter information, the target area information, and the target area information, this combination is being transmitted, for example, the hypocenter information. Even if the end report is received while 3407 is transmitted and the target area information 3408 is transmitted, the seismic motion warning is maintained until the target area information 3409 as a delimiter is transmitted.

  As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is started in the order of the epicenter information, the epicenter information, the target area information, and the target area information, and the end report is received during the transmission of this combination, The end flag, update flag, page type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3401) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3402) When it is detected that an earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving apparatus changes the operation state from the normal operation state to the earthquake motion warning response state. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted two by two, the digital broadcast receiving apparatus acquires at least one or more of these combinations. This corresponds to the first epicenter information 3402, the second seismic source information 3403, the first target area information 3404, and the second target area information 3405 in FIG. 34 (a). As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3410) After the occurrence of earthquake motion, the contents of the epicenter information and the target area information may be updated as detailed information gathers. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted two by two, the digital broadcast receiving apparatus reacquires at least one of these combinations. This corresponds to the first epicenter information 3410 in FIG. 34A, the second epicenter information following it, the first target area information, and the second target area information. Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3411) Upon detecting that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the earthquake motion warning response state to the normal operation state. At this time, all the operations such as the warning display that have been performed so far are terminated, and a normal digital broadcast viewing state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. At least two or more target area information of 0 ″ is alternately transmitted. This increases redundancy and improves information reliability.

  A seventh embodiment according to the present invention will be described.

  The difference from the fifth embodiment and the sixth embodiment is that the target area information is sandwiched and transmitted by two pieces of corresponding epicenter information.

  If multiple earthquake motions occur at the same time, epicenter information and target area information may be transmitted for each earthquake motion. At this time, depending on the transmission method of the information, there is a possibility that the digital broadcast receiving apparatus recognizes the information in an incorrect combination. For example, if the epicenter information of earthquake motion A and the regional information of earthquake motion B are combined, incorrect information will be presented to the user.

  In order to solve this problem, in the embodiment according to the present invention, in order to uniquely determine the combination of the epicenter information and the target area information, the information is transmitted in a specific order. Specifically, when multiple ground motions occur at the same time, the source information including the current time, total number of ground motion information, and ground motion information identification, which is information for distinguishing them, is transmitted first, and this is referred to as the source information. It is the beginning of the combination of target area information. Next, target area information is transmitted as information corresponding to this. After that, the epicenter information is transmitted again, and this is the end of the combination of the epicenter information and the target area information.

  A specific example of the above transmission method when a single earthquake motion occurs will be described with reference to FIGS. 35 (a) and 35 (b). FIGS. 35 (a) and 35 (b) show the update / start flag of the earthquake motion warning when the earthquake motion warning information is transmitted using the AC signal included in the segment number # 0 in the digital terrestrial television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time.

  (3501) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3502) If an earthquake occurs and the seismic motion warning is triggered by this, the start / end flag transitions to “00” indicating “start”, and the update flag transitions to the initial value “00”. Here, since the epicenter information indicating the occurrence time of the seismic motion and the location and depth of the epicenter is transmitted first, the page type is changed to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3503) Next, in order to transmit the target area information indicating the target area of the earthquake motion warning, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 35 (a) and 35 (b), “ ― ”.

  (3504) The same epicenter information as 3502 is transmitted again so as to sandwich the target area information transmitted in 3503.

  After that, the target area information is repeatedly inserted and transmitted by the corresponding two epicenter information. Specifically, the transmission of the combination of the epicenter information 3502, the target area information 3503, and the epicenter information 3504 is repeated.

  The end of the seismic motion warning is triggered by the fact that the organization that issued the seismic motion warning (for example, the Japan Meteorological Agency) instructs the end of the reporting and receives it (“end report reception” in FIG. 35B). When ending the earthquake motion warning, as shown in FIG. 35 (b), start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are respectively set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIGS. 35 (a) and 35 (b), when the seismic motion warning is started in the order of the epicenter information, the target area information, and the epicenter information, the seismic source information 3505 is transmitted during the transmission of this combination. Even if the end report is received while the target area information 3506 is transmitted, the seismic motion warning is maintained until the target area information 3507 as a break is transmitted. As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is started in the order of the epicenter information, the target area information, and the epicenter information, and the end report is received during the transmission of this combination, the start / end flag is updated immediately at the next transmission timing. The flag, page type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3501) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3502) When it is detected that an earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving apparatus changes the operation state from the normal operation state to the earthquake motion warning corresponding state. In the seismic motion warning information of the present embodiment, the target area information is sandwiched and transmitted by the corresponding two epicenter information, so the digital broadcast receiving apparatus acquires at least one or more of these combinations. The first epicenter information 3502 in FIG. 35A, the target area information 3503 that follows it, and the second epicenter information 3504 correspond to this. As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3508) After the occurrence of earthquake motion, the contents of the epicenter information and the target area information may be updated as detailed information gathers. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of the present embodiment, the target area information is sandwiched and transmitted by the corresponding two epicenter information, so the digital broadcast receiving apparatus reacquires at least one of these combinations. This corresponds to the first epicenter information 3508, the next target area information, and the second epicenter information in FIG. Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3509) Upon detecting that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the earthquake motion warning response state to the normal operation state. At this time, all the operations such as the warning display that have been performed so far are terminated, and a normal digital broadcast viewing state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. The target area information “0” and the epicenter information whose page type is “1” are transmitted as a set. By inserting and transmitting target area information between two corresponding source information, even if multiple ground motions occur at the same time, it is possible to uniquely specify a combination of source information and target area information for each ground motion. . If the digital broadcast receiver receives these information according to this transmission pattern, the combination can be uniquely specified, so even if multiple earthquake motions occur, the information is presented to the user in the correct combination be able to.

  Embodiment 8 according to the present invention will be described.

  In the present embodiment, a case where a plurality of earthquake motions occur in the transmission method described in the fifth embodiment will be described. A specific example of the transmission method in this case will be described with reference to FIGS. 36 (a) to 36 (c). 36 (a) to 36 (c) show the earthquake motion warning start / end flag and update when the earthquake motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time.

  (3601) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3602) If the first earthquake occurs and the seismic motion warning is triggered by this, the start / end flag transitions to “00” indicating “start”, and the update flag transitions to the initial value “00”. . In the present embodiment, first, epicenter information (hereinafter referred to as seismic source information 1) indicating the occurrence time of the seismic motion and the location and depth of the epicenter is transmitted. The reason will be described later. In this case, the page type transitions to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3603) In this embodiment, next, target area information (hereinafter referred to as target area information 1) indicating the target area of the earthquake motion warning is transmitted. The reason for this will be described later. In this case, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 36 (a) to 36 (c), “ ― ”.

  Thereafter, the epicenter information 1 (3602) and the target area information 1 (3603) are alternately transmitted one by one, and it is assumed that another earthquake occurs in the middle.

  (3604) The epicenter information accompanying the occurrence of another earthquake (hereinafter referred to as seismic source information 2) is transmitted. The timing of transmitting the epicenter information 2 is the process of maintaining the transmission pattern of the epicenter information, the target area information, the epicenter information,. Because the epicenter information includes the current time, the total number of seismic motion information, and the seismic motion information identification, which are necessary information for distinguishing multiple earthquakes. By transmitting this first, the corresponding target area information is then transmitted. This is because this can be a combination of epicenter information and target area information for one earthquake motion. Since the epicenter information 2 is new information associated with another earthquake motion, an update flag is added here. The total number of earthquake motion information that appears only when the page type is “1” is changed to “1” indicating that the number of information is two. Similarly, the earthquake motion information identification that appears only when the page type is “1” Each transitions to “1” representing information.

  (3605) Next, target area information (hereinafter referred to as target area information 2) associated with the occurrence of another earthquake is transmitted. Since the update flag has already been added at 3604, the value is continued. Since the target area information is transmitted, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 36 (a) to 36 (c), “ ― ”.

  Thereafter, the combination of the source information 1 (3602) and the target area information 1 (3603) associated with the first earthquake, and the combination of the source information 2 (3604) and the target area information 2 (3605) associated with the next earthquake are alternated. Sent.

  The end of the seismic motion warning is triggered by the fact that the organization that issued the seismic motion warning (for example, the Japan Meteorological Agency) instructs the end of the reporting and receives it ("end report reception" in FIG. 36 (c)). When the earthquake motion warning is ended, as shown in FIG. 36C, the start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are respectively set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIGS. 36 (a) to 36 (c), when the seismic motion warning is started in the order of the epicenter information and the target area information, the seismic source information 1 (3606) is transmitted during the transmission of this combination. Even if the end report is received while transmitting the target area information 1 (3607), the seismic motion warning is maintained until the target area information 1 (3607) serving as a break is transmitted. In the state where the epicenter information and the target area information are transmitted for each of the plurality of seismic motions, the seismic motion warning is terminated at the end after the combination of the seismic source information and the target area information for the first seismic motion is transmitted. There is a case where the seismic motion warning is terminated at a break after transmitting the combination of the epicenter information and the target area information about the ground motion.

  As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is transmitted in the order of the epicenter information and the target area information, and an end report is received during the transmission of this combination, the start / end flag, the update flag, and the page are immediately transmitted at the next transmission timing. The type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated. Even when the epicenter information and the target area information are transmitted for a plurality of seismic motions, the seismic motion warning is immediately terminated immediately after the end report is received.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3601) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3602) When it is detected that the first earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving apparatus changes its operation state from the normal operation state to the earthquake motion warning response state. Let In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted one by one, the digital broadcast receiving apparatus acquires at least one or more of these combinations. The hypocenter information 1 (3602) in FIG. 36A and the subsequent target area information 1 (3603) correspond to this. As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3608) After the occurrence of earthquake motion, the contents of the epicenter information and the target area information may be updated as detailed information gathers. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted one by one, the digital broadcast receiving apparatus reacquires at least one of these combinations. The hypocenter information 1 (3608) in FIG. 36A and the subsequent target area information 1 correspond to this. Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3604) When another earthquake occurs here and new earthquake motion warning information for this earthquake is transmitted, an update flag of the earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus acquires the information again based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted one by one, the digital broadcast receiving apparatus reacquires at least one of these combinations again. This corresponds to the epicenter information 2 (3604) in FIG. 36 (b) and the target area information 2 (3605) following it. The behavior of the digital broadcast receiving device that has received these seismic motion warning information for another earthquake is that the user has indicated that another earthquake has occurred and the target area information has been received for this another earthquake. Refer to this, and if the installation location of the digital broadcasting receiver is included in the target area, give a stronger warning, or refer to this when the epicenter information is received, to determine the time to reach the seismic motion It may be displayed.

  (3609) When the digital broadcast receiving apparatus detects that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the seismic motion warning response state to the normal operation state. At this time, all the operations such as the warning display that have been performed so far are terminated, and a normal digital broadcast viewing state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. The target area information of “0” is alternately transmitted one by one. At the start of the earthquake motion warning, transmission is performed from the first epicenter information whose page type is “1”. Even when a plurality of earthquake motions occur, each information can be quickly obtained by alternately transmitting one combination of the epicenter information and the target area information for each earthquake.

  Embodiment 9 according to the present invention will be described.

  In the present embodiment, a case where a plurality of earthquake motions occur in the transmission method described in the sixth embodiment will be described. A specific example of the transmission method in this case will be described with reference to FIGS. 37 (a) to 37 (c). FIGS. 37 (a) to 37 (c) show the earthquake motion warning start / end flag and update when the earthquake motion warning information is transmitted using the AC signal included in the segment number # 0 in the digital terrestrial television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time.

  (3701) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3702) If the first earthquake occurs and the seismic motion warning is triggered by this, the start / end flag changes to “00” indicating “start”, and the update flag changes to the initial value “00”. .

  In the present embodiment, first, epicenter information (hereinafter referred to as seismic source information 1) indicating the occurrence time of the seismic motion and the location and depth of the epicenter is transmitted. The reason will be described later. In this case, the page type transitions to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3703) In order to increase redundancy, the same epicenter information as 3702 is transmitted again.

  (3704) In this embodiment, next, target area information (hereinafter referred to as target area information 1) indicating the target area of the earthquake motion warning is transmitted. The reason for this will be described later. In this case, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the epicenter information, in FIG. 37 (a) to FIG. ― ”.

  (3705) In order to increase the redundancy, the same target area information as 3704 is transmitted again.

  Thereafter, the epicenter information 1 and the target area information 1 are alternately transmitted two by two. Specifically, the epicenter information 3702 and 3703 and the target area information 3704 and 3705 are alternately transmitted.

  Next, suppose another earthquake occurred on the way.

  (3706) The epicenter information accompanying the occurrence of another earthquake (hereinafter referred to as epicenter information 2) is transmitted. The transmission timing of epicenter information 2 is the process of maintaining the transmission pattern of epicenter information, epicenter information, target area information, target area information, hypocenter information, hypocenter information, and so on. The timing to do is appropriate. Because the epicenter information includes the current time, the total number of seismic motion information, and the seismic motion information identification that are necessary information for distinguishing multiple earthquakes. This is because by transmitting, this can be a combination of epicenter information and target area information for one earthquake motion. Since the epicenter information 2 is new information associated with another earthquake motion, an update flag is added here. The total number of earthquake motion information that appears only when the page type is “1” is changed to “1” indicating that the number of information is two. Similarly, the earthquake motion information identification that appears only when the page type is “1” Each transitions to “1” representing information.

  (3707) In order to increase redundancy, the same epicenter information as 3706 is transmitted again.

  (3708) Next, target area information (hereinafter referred to as target area information 2) associated with the occurrence of another earthquake is transmitted. Since the update flag has already been added in 3706, the value is continued. Since the target area information is transmitted, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described in the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 37 (a) to 37 (c), “ ― ”.

  (3709) In order to increase the redundancy, the same target area information as 3708 is transmitted again.

  Thereafter, a combination of two source information 1 and two target area information 1 associated with the first earthquake and a combination of two source information 2 and two target area information 2 associated with the next earthquake are alternately transmitted. Specifically, the combination of the epicenter information 3702 and 3703 and the target area information 3704 and 3705 and the combination of the epicenter information 3706 and 3707 and the target area information 3708 and 3709 are alternately transmitted.

  The end of the seismic motion warning is triggered by the fact that the organization (for example, the Japan Meteorological Agency) that instructed the seismic motion warning is instructed to receive the notification ("end report reception" in FIG. 37 (c)). When ending the earthquake motion warning, as shown in FIG. 37 (c), the start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are respectively set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIG. 37 (a) to FIG. 37 (c), when the seismic motion warning is started in the order of the epicenter information, the epicenter information, the target area information, and the target area information, Even if the end information is received while transmitting the first epicenter information 1 (3711) and the first target area information 1 (3712) is transmitted, the second target area information 1 (3713) serving as a break is transmitted. Until then, seismic motion warning is maintained. In the state where the epicenter information and the target area information are transmitted for each of the plurality of seismic motions, the seismic motion warning is terminated at the end after the combination of the seismic source information and the target area information for the first seismic motion is transmitted. There is a case where the seismic motion warning is terminated at a break after transmitting the combination of the epicenter information and the target area information about the ground motion.

  As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is started in the order of the epicenter information, the epicenter information, the target area information, and the target area information, and the end report is received during the transmission of this combination, The end flag, update flag, page type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated. Even when the epicenter information and the target area information are transmitted for a plurality of seismic motions, the seismic motion warning is immediately terminated immediately after the end report is received.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3701) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3702) When it is detected that the first earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving apparatus changes the operation state from the normal operation state to the earthquake motion warning compatible state. Let In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted two by two, the digital broadcast receiving apparatus acquires at least one or more of these combinations. The first epicenter information 1 (3702) and the second seismic source information 1 (3703), the first target area information 1 (3704), and the second target area in FIG. Information 1 (3705) corresponds to this. As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3714) After the earthquake motion occurs, the details of the epicenter information and the target area information may be updated as detailed information is collected. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted two by two, the digital broadcast receiving apparatus reacquires at least one of these combinations. This corresponds to the first epicenter information 1 (3714) and the second seismic source information 1, the first target area information 1, and the second target area information 1 in FIG. 37 (a). To do.

  Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3706) When another earthquake occurs here and new earthquake motion warning information for this earthquake is transmitted, an update flag of the earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus acquires the information again based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the epicenter information and the target area information are alternately transmitted two by two, the digital broadcast receiving apparatus reacquires at least one of these combinations again. This corresponds to the first epicenter information 2 (3706) and the second seismic source information 2, the first target area information 2, and the second target area information 2 in FIG. 37 (b). To do. The behavior of the digital broadcast receiving device that has received these seismic motion warning information for another earthquake is that the user has indicated that another earthquake has occurred and the target area information has been received for this another earthquake. Refer to this, and if the installation location of the digital broadcasting receiver is included in the target area, give a stronger warning, or refer to this when the epicenter information is received, to determine the time to reach the seismic motion It may be displayed.

  (3715) Upon detecting that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the seismic motion warning response state to the normal operation state. At this time, all the operations such as the warning display that have been performed so far are terminated, and a normal digital broadcast viewing state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. The target area information that is 0 ″ is alternately transmitted two by two. At the start of the earthquake motion warning, the epicenter information whose page type is “1” is transmitted. Even when multiple earthquake motions occur, redundancy is increased and information reliability is improved by transmitting two combinations of epicenter information and target area information alternately for each earthquake.

  A tenth embodiment according to the present invention will be described.

  In this embodiment, a case where a plurality of earthquake motions occur in the transmission method described in the seventh embodiment will be described. A specific example of the transmission method in this case will be described with reference to FIGS. 38 (a) to 38 (c). FIGS. 38 (a) to 38 (c) show the earthquake motion warning start / end flag and update when the earthquake motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. It is a transmission example of a flag, page type, total number of earthquake motion information, and earthquake motion information identification. The horizontal axis represents time.

  (3801) Before the earthquake motion warning is started, the above values are always “11”, “11”, “1”, “1”, and “1”, respectively.

  (3802) If the first earthquake occurs and the seismic motion warning is triggered by this, the start / end flag changes to “00” indicating “start”, and the update flag changes to the initial value “00”. . Here, since the epicenter information (hereinafter referred to as seismic source information 1) indicating the occurrence time of the seismic motion and the location and depth of the epicenter is transmitted first, the page type is changed to “1”. The total number of earthquake motion information that appears only when the page type is “1” is changed to “0” indicating that the number of information is one. Similarly, the earthquake motion information identification that appears only when the page type is “1” is the first information. Transition to “0” indicating that

  (3803) Since the target area information indicating the target area of the earthquake motion warning (hereinafter referred to as target area information 1) is transmitted, the page type changes to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described at the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 38 (a) to 38 (c), “ ― ”.

  (3804) The same target area information as 3802 is transmitted again so as to sandwich the target area information transmitted in 3803.

  After that, the target area information is repeatedly inserted and transmitted by the corresponding two epicenter information. Specifically, the transmission of the combination of the epicenter information 3802, the target area information 3803, and the epicenter information 3804 is repeated.

  Next, suppose another earthquake occurred on the way.

  (3805) The epicenter information accompanying the occurrence of another earthquake (hereinafter referred to as epicenter information 2) is transmitted. The transmission timing of epicenter information 2 is the process of maintaining the transmission pattern of epicenter information, target area information, source information, source information, target area information, source information, and so on. The timing to do is appropriate. Because the epicenter information includes the current time, the total number of seismic motion information, and the seismic motion information identification, which are necessary information for distinguishing multiple earthquakes, send this first, then send the corresponding target area information, This is because by transmitting the epicenter information again so as to sandwich the target area information, it can be made a combination of the epicenter information and the target area information for one earthquake motion. Since the epicenter information 2 is new information associated with another earthquake motion, an update flag is added here. The total number of earthquake motion information that appears only when the page type is “1” is changed to “1” indicating that the number of information is two. Similarly, the earthquake motion information identification that appears only when the page type is “1” Each transitions to “1” representing information.

  (3806) Next, target area information (hereinafter referred to as target area information 2) associated with the occurrence of another earthquake is transmitted. Since the update flag has already been added in 3805, the value is continued. Since the target area information is transmitted, the page type transitions to “0”. In the case of the target area information, since information indicating the target area of the earthquake motion warning is described at the location where the total number of earthquake motion information and the identification of the earthquake motion information are described in the source information, in FIGS. 38 (a) to 38 (c), “ ― ”.

  (3807) The same epicenter information as 3802 is transmitted again so as to sandwich the target area information transmitted in 3806.

  Thereafter, the combination of the source information 1, the target area information 1, and the source information 1 associated with the first earthquake, and the combination of the source information 2, the target area information 2, and the source information 2 associated with the next earthquake are alternately transmitted. Specifically, the combination of the epicenter information 3802, the target area information 3803, and the hypocenter information 3804 and the combination of the hypocenter information 3805, the target area information 3806, and the hypocenter information 3807 are alternately transmitted.

  The end of the seismic motion warning is triggered by the fact that the organization (for example, the Japan Meteorological Agency) that instructed the seismic motion warning is instructed to receive the notification ("end report reception" in FIG. 38C). When ending the earthquake motion warning, as shown in FIG. 38C, the start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are respectively set to “11”, “11”, “1”, “ Transition to “1” and “1” and continue to maintain this value thereafter.

  As the first end timing of the earthquake motion warning, a break after transmitting one combination of the earthquake motion warning detailed information can be considered. For example, as shown in FIG. 38 (a) to FIG. 38 (c), when the seismic motion warning is started in the order of the epicenter information, the target area information, and the epicenter information, during the transmission of this combination, for example, the first source information 1 Even if the end report is received while transmitting (3808) and target area information 1 (3809) is transmitted, the seismic motion warning is maintained until the second target area information 1 (3810) serving as a break is transmitted. . In the state where the epicenter information and the target area information are transmitted for each of the plurality of seismic motions, the seismic motion warning is terminated at the end after the combination of the seismic source information and the target area information for the first seismic motion is transmitted. There is a case where the seismic motion warning is terminated at a break after transmitting the combination of the epicenter information and the target area information about the ground motion.

  As the second end timing of the seismic motion warning, it is conceivable that the seismic motion warning is immediately terminated immediately after the end report is received. In this case, for example, when the seismic motion warning is started in the order of the epicenter information, the target area information, and the epicenter information, and the end report is received during the transmission of this combination, the start / end flag is updated immediately at the next transmission timing. The flag, page type, total number of seismic motion information, and seismic motion information identification are changed to “11”, “11”, “1”, “1”, “1”, respectively, and the seismic motion warning is terminated. Even when the epicenter information and the target area information are transmitted for a plurality of seismic motions, the seismic motion warning is immediately terminated immediately after the end report is received.

  Next, in this embodiment, the operation of the digital broadcast receiving apparatus that receives earthquake motion warning information will be described.

  (3801) While the start / end flag is “11”, the digital broadcast receiving apparatus is in a normal operation state in which normal digital broadcast can be viewed.

  (3802) When it is detected that the first earthquake has occurred and the start / end flag has changed from “11” to “00”, the digital broadcast receiving device changes the operation state from the normal operation state to the earthquake motion warning response state. Let In the seismic motion warning information of the present embodiment, the target area information is sandwiched and transmitted by the corresponding two epicenter information, so the digital broadcast receiving apparatus acquires at least one or more of these combinations. The first source information 1 (3802), the subsequent target area information 1 (3803), and the second source information 1 (3804) in FIG. As for the behavior of the digital broadcast receiving device that has received these earthquake motion warning information, refer to the target area information when it is received, and if the installation location of the digital broadcast receiver is included in the target area, give a stronger warning. It may be possible to display the time until the earthquake motion arrives by referring to this information when the earthquake information is received.

  (3811) After the occurrence of earthquake motion, the contents of the epicenter information and the target area information may be updated as detailed information gathers. In such a case, an update flag of earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus reacquires information based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of the present embodiment, the target area information is sandwiched and transmitted by the corresponding two epicenter information, so the digital broadcast receiving apparatus reacquires at least one of these combinations. This corresponds to the first epicenter information 1 (3811), the subsequent target area information 1 and the second epicenter information 1 in FIG. 38 (a).

  Based on the information updated here, the digital broadcast receiving device refers to the target area information when it is updated. If the target area is included in the target area, a new and stronger warning is given. It is possible to update the time display until the earthquake motion arrives by referring to this when the earthquake source information is updated.

  (3805) When another earthquake occurs and new earthquake motion warning information for this earthquake is transmitted, an update flag of the earthquake motion warning information is added. When the digital broadcast receiving apparatus detects the change of the update flag, the digital broadcast receiving apparatus acquires the information again based on the earthquake motion warning information in which the update flag has changed. In the seismic motion warning information of this embodiment, since the target area information is sandwiched and transmitted by the two corresponding earthquake source information, the digital broadcast receiving apparatus acquires again at least one of these combinations again. This corresponds to the first epicenter information 2 (3805), the target area information 2 that follows, and the second epicenter information 2 in FIG. The behavior of the digital broadcast receiving device that has received these seismic motion warning information for another earthquake is that the user has indicated that another earthquake has occurred and the target area information has been received for this another earthquake. Refer to this, and if the installation location of the digital broadcasting receiver is included in the target area, give a stronger warning, or refer to this when the epicenter information is received, to determine the time to reach the seismic motion It may be displayed.

  (3812) Upon detecting that the start / end flag has changed from “00” to “11”, the digital broadcast receiving apparatus changes the operation state from the seismic motion warning response state to the normal operation state. At this time, all the operations such as the warning display that have been performed so far are terminated, and a normal digital broadcast viewing state is entered.

  As described above, the earthquake motion information in the present embodiment includes the epicenter information having the page type “1” and the page type ““ while the start / end flag is transitioning to the state “00” indicating “start”. The target area information “0” and the epicenter information whose page type is “1” are transmitted as a set. At the start of the earthquake motion warning, transmission is performed from the first epicenter information whose page type is “1”. By inserting and transmitting target area information between two corresponding source information, even if multiple ground motions occur at the same time, it is possible to uniquely specify a combination of source information and target area information for each ground motion. . If the digital broadcast receiver receives these information according to this transmission pattern, the combination can be uniquely specified, so even if multiple earthquake motions occur, the information is presented to the user in the correct combination be able to.

  Embodiment 11 according to the present invention will be described with reference to FIGS. 39 and 40. FIG.

  FIG. 39 is a block diagram showing a configuration of a digital broadcast receiving apparatus that receives earthquake motion warning information transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system.

  Reference numeral 3901 denotes a setting storage unit, and the determination unit 117 also uses information set in the setting storage unit 3901 to generate the determination information 2512. The setting storage unit 3901 stores installation location information set in the digital broadcast receiving device under the control of the control unit 118. As the setting method of the installation location information, there are a method using area information specified by reception setting at the time of setting up the digital broadcast receiving apparatus, and a method using GPS. When GPS is used, there is an advantage that correct installation location information can always be held in a portable digital broadcast receiver.

  The control unit 118 generates location information in the same format as the data format in FIG. 11 using the region information specified by the reception setting or the location information acquired using the GPS, and stores it in the setting storage unit 3901.

  The bit assigned to the installation area is '0', and the bit assigned to other areas is '1'. If no installation location information is set, all are set to “1”. In addition, when GPS is used, for example, in-vehicle or portable digital broadcast receivers, it is assumed that the movement of regional boundaries is repeated in a relatively short time, such as when moving between prefectural boundaries. As described above, when it is determined that a plurality of areas are moved within a predetermined time, all of these areas may be assigned as installation location areas. Reference numeral 3902 denotes a prefectural information reception frequency storage unit, which stores the frequency of reception of prefectural information for each region. When the determination unit 117 outputs the determination information to the control unit 118, the information set in the prefecture information reception count storage unit 3902 is also used. FIG. 40 is a block diagram illustrating the configuration of the setting storage unit 3901, the prefecture information reception count storage unit 3902, and the determination unit 117.

  The prefecture information in the data determination storage unit 2506 stores information as bit data of “0” or “1” for each region based on the region assignment shown in FIG. On the other hand, the prefectural information reception count storage unit 3902 stores at least “0” to “2” information for each region in order to store information as the count of reception of prefectural information. The prefectural information reception count storage unit 3902 stores the reception count of information indicating the target area for each area while the start / end flag of the earthquake motion warning information indicates a value indicating start. For example, if two earthquakes (earthquake A and earthquake B) occur almost simultaneously in the Hokkaido region, the target area of earthquake A is “Hokkaido Doo” and “Hokkaido Dominami”, and the target area of earthquake B is “Hokkaido In the case of “Dohoku” and “Hokkaido Dohoku”, the number of times of receiving information indicating the target area is “Hokkaido Douo” is 2, “Hokkaido Dominami” and “Hokkaido Dohoku” are 1 respectively, and other areas are 0.

  The determination unit 117 determines the warning level using the earthquake motion detailed information and the information on the number of receptions. In FIG. 40, description of the same operation as in FIG. 25 is omitted. Reference numeral 4001 denotes a warning level determination unit.

  Hereinafter, the operation of the determination unit 117 will be described.

  The data from the AC decoding unit 116 is confirmed by the data determination storage unit 2506 with the signal identification shown in FIG. 5 to determine the meaning shown in FIG. In this case, the information shown in FIGS. 10, 11, and 12 is stored.

  The judgment information of the comparison judgment unit 2507 is sent to the warning level judgment unit 4001.

  The warning level determination unit 4001 starts processing with the input of the determination information from the comparison determination unit 2507 as a trigger. Details of the warning level determination process will be described later. The warning level information generated by the warning level determination unit 4001 is sent to the buzzer generation unit 2508 and the processing unit 2509 and to the control unit 118 via the output 2512.

  The buzzer generation unit 2508 starts processing with the input of warning level information from the warning level determination unit 4001 as a trigger. The buzzer is generated with a sound of a predetermined warning level. For example, the higher the value, the stronger the warning. In the case of 3 levels, level 3 is defined as a very strong warning, level 2 is a strong warning, level 1 is a normal warning, etc. Set the buzzer volume and buzzer sound type in advance.

  The processing unit 2509 performs a process of outputting a warning video or sound in which the warning intensity is changed in accordance with the warning level.

  Details of the warning level determination process will be described below with reference to FIG.

  FIG. 41 is a flowchart of a warning level determination process in the warning level determination unit 4001.

  (S100) The warning level determination unit 4001 starts processing with the input of the determination information from the comparison determination unit 2507 as a trigger.

  (S101) The processing branches based on the installation location information in the setting storage unit 3901 and the prefectural information reception frequency of the prefecture including the installation location in the prefectural information reception frequency storage unit 3902. If the prefecture information including the installation location is not received, the process proceeds to S102, and if received, the process proceeds to S103.

  (S102) The warning level is set to the default warning level, and the process ends.

  (S103) The processing branches based on the installation location information of the setting storage unit 3901 and the prefectural information reception frequency of the prefecture including the installation location in the prefectural information reception frequency storage unit 3902. If the prefecture information reception count of the prefecture including the installation location is less than twice, the process proceeds to S104, and if it is twice or more, the process proceeds to S105.

  (S104) Since the installation location is included in the warning target area for one earthquake, the warning level is set as a normal warning.

  (S105) Since the installation location is included in the warning target area for a plurality of earthquakes, the warning level is set as a special warning. In this case, the digital broadcast receiver can warn the user to be wary of multiple earthquakes. For example, the user who sees the warning can stay in a safe place even if the shaking caused by the first earthquake has subsided, and can take precautions such as preparing for an earthquake that will occur thereafter.

  As described above, even if multiple earthquakes occur almost simultaneously, the use of digital broadcast receivers can be established by referring to the installation location information and the frequency of reception of prefecture information including the installation location. It is possible to warn the person to take further caution.

  In particular, in the Tokai earthquake, Nankai earthquake, and Tonankai earthquake, which are expected to occur soon, they are said to have occurred at the same time according to past records. Most earthquakes occur alone, and the resulting tremors are often accompanied by relatively small aftershocks after the first large mainshock, so most people come out of a safe and safe place after passing the mainshock. . However, if there is a possibility that such a large earthquake will occur at the same time, it should continue to stay in a safe place.

  Furthermore, in this embodiment, the first warning is output at the same timing as in the first to fifth embodiments, and then the warning level is changed according to the installation information and the prefecture information of the warning target area. Therefore, an alarm can be issued without delaying the timing of the first alert.

  A twelfth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake occurs, the digital that outputs a warning screen at the time of receiving the epicenter information or the target area information. The operation relates to the operation of the broadcast receiving apparatus. Further, the present invention relates to a transmission operation and an operation of the digital broadcast receiving apparatus that update only the update flag of the epicenter information when either or both of the epicenter information and the target area information are updated.

  First, when both the epicenter information and the target area information are updated, an example of transmitting earthquake motion warning information and an example of operation of the digital broadcast receiving apparatus will be described with reference to FIGS. 42 to 51.

  FIG. 42 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. 2 shows details of an example of transmission of earthquake motion information identification and an example of operation of a digital broadcast receiver. FIG. 42 shows a modification of the operation of the receiving apparatus of FIG. 33A described in the fifth embodiment.

  (4200) Since the start / end flag of the earthquake motion warning information is “11”, the digital broadcast receiving apparatus operates in the normal operation state.

  (4201) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts an operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 and the seismic motion warning information received this time by the processing unit 2509 based on the epicenter information received for the first time after the operation in the state corresponding to the seismic motion warning information is started. The generated warning screen is generated and output to the video output unit 3001.

  FIG. 43 is an example of a warning screen displayed on the video output unit 3001. In FIG. 43, a character string 4300 indicating an earthquake early warning, a character string 4301 indicating that an earthquake is coming, a character string 4302 for alerting the viewer, an earthquake occurrence time 4303, and an announcement date 4304 of earthquake motion warning information are displayed. . Here, the occurrence time 4303 can be acquired from B101 to B110 of the epicenter information. Moreover, the date and time of announcement can be obtained from B24 to B54 of the epicenter information.

  FIG. 44 is an example of a warning screen displayed on the video output unit 3001. The difference from FIG. 43 is that a grace time 4400 until the earthquake arrives is displayed instead of the character string 4302 that alerts the viewer. Here, the grace time 4400 until the earthquake arrives can be calculated by subtracting the elapsed time from the time until the earthquake arrives. The time until the arrival of the earthquake is as follows: B68 North latitude / South latitude flag, B69-B78 latitude information, B79 West longitude flag, B80-B90 longitude information, B91-B100 From the seismic intensity information, the time until the arrival of the earthquake can be calculated using, for example, a travel time table (JMA2001) used in the Japan Meteorological Agency. The elapsed time can be calculated by subtracting the occurrence time of B101 to B110 from the current time of B24 to B54. Further, the grace time 4400 is displayed by subtracting one second every second, for example, regardless of reception of the earthquake motion warning information.

  FIG. 45 is an example of a warning screen displayed on the video output unit 3001. A difference from FIG. 42 is that an estimated arrival time 4500 of an earthquake is displayed instead of the character string 4302 that alerts the viewer. Here, the estimated arrival time 4500 of the earthquake can be calculated by adding the above-described grace time 4400 to the announcement date or by adding the above-described time until the arrival of the earthquake to the occurrence time.

  (4202) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the epicenter information received in (4201) and the target area information received this time is generated and output to the video output unit 3001.

  FIG. 46 is an example of a warning screen displayed on the video output unit 3001. In FIG. 46, FIG. 43 is displayed on the left half of the video output unit 3001, and a map 4600, an emphasis display 4601 indicating the target area, and an epicenter 4602 are additionally displayed on the right half. The highlighting includes, for example, the target area of the map 4600 is shaded, the color is changed, the boundary line of the prefecture is thickened, and the blinking is performed. The target area can be acquired from the target area information B56 to B111.

  FIG. 47 is an example of a warning screen displayed on the video output unit 3001. In FIG. 47, a map 4600, an emphasis display 4601 indicating the target area, and an epicenter 4602 are additionally displayed in FIG.

  FIG. 48 is an example of a warning screen displayed on the video output unit 3001. 48, a map 4600, an emphasis display 4601 indicating the target area, and an epicenter 4602 are additionally displayed in FIG.

  FIG. 49 is an example of a warning screen displayed on the video output unit 3001. In FIG. 49, a target area 4900 and a character string 4901 indicating the occurrence of an earthquake are displayed instead of the character string 4301 indicating the occurrence of an earthquake and the character string 4302 for alerting the viewer in FIG. The highlighting here is for changing the display of important information.

  (4203) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, that the epicenter information is received. After detection, the previously stored epicenter information, here the epicenter information update flag received in (4201) is read from the data judgment storage unit 2506 and compared with the epicenter information update flag received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (4202) is continuously displayed.

  (4204) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. After detection, the previously stored target area information, here, the update flag of the target area information received in (4202) is read from the data determination storage unit 2506 and compared with the update flag of the target area information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (4202) is continuously displayed.

  (4205) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After detection, the previously stored epicenter information, here the epicenter information update flag received in (4201) is read from the data judgment storage unit 2506 and compared with the epicenter information update flag received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus determines that the epicenter information may have been updated, and stores the received epicenter information in the data determination storage unit 2506. After that, the previously stored epicenter information, here the epicenter information received in (4201), is read from the data judgment storage unit 2506 and compared with the seismic source information received this time. As a result of comparison, if there is a different part, it is determined that the epicenter information has been updated and the warning screen is updated. If there is no different part, it is determined that the epicenter information has not been updated and the currently displayed warning screen is displayed. Continue to display.

  Here, since there are different parts, the processing unit 2509 generates a warning screen based on the currently received epicenter information and the latest target area information, here the target area information received in (4202), and outputs the video. To the unit 3001. The comparison result is also used to change the display of updated information.

  FIG. 50 is an example of a warning screen displayed on the video output unit 3001. In FIG. 50, the estimated arrival time 4500 and the earthquake alarm information announcement date 4304 in FIG. 48 are updated, and the frame is highlighted in bold to indicate that it has been updated. Emphasize other methods such as blinking the updated part or changing the color. The highlighting here is for changing the display of the updated information. In addition to changing the display of information, the warning screen may be displayed after the warning sound is emitted, and the viewer may be notified that the warning screen has been updated.

  (4206) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. After the detection, the previously stored target area information, here, the update flag of the target area information received in (4202) is read from the data determination storage unit 2506, and the update flag of the target area information received this time is compared. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus determines that the target area information may be updated, and stores the received target area information in the data determination storage unit 2506. Thereafter, the target area information stored last time, here the target area information received in (4202) is read from the data judgment storage unit 2506 and compared with the target area information received this time. As a result of the comparison, if there is a different part, it is determined that the target area information has been updated and the warning screen is updated. If there is no different part, it is determined that the target area information has not been updated and is currently displayed. Continue displaying the warning screen. Here, since there are different parts as a result of comparison, the processing unit 2509 generates a warning screen based on the latest epicenter information, here the epicenter information received in (4205) and the target area information received this time. To the video output unit 3001. The comparison result is also used to change the display of updated information.

  FIG. 51 is an example of a warning screen displayed on the video output unit 3001. In FIG. 51, the highlight display 4601 indicating the target area in FIG. 50 is updated. The highlighting here is for changing the display of important information.

  (4207) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information has been received. After the detection, the previously stored epicenter information, here, the epicenter information update flag received in (4205) is read from the data judgment storage unit 2506 and compared with the epicenter information update flag received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (4206) is continuously displayed.

  So far we have explained the case where both the epicenter information and the target area information have been updated. However, if only the epicenter information is updated, the update process of the warning screen related to the target area information is not performed in (4206). The remaining operation is the same except that the warning screen generated in (4205) is continuously displayed. When only the target area information is updated, the warning screen generated in (4202) continues to be displayed without performing the update processing of the warning screen related to the epicenter information in (4205), and the remaining operations are the same. It is.

  Also, in this explanation, when the update flag is updated, whether the information is actually updated or not is compared, but even if the warning screen is updated as if it was updated without performing the comparison Good. However, if the comparison is not performed, it is not possible to know which part has been updated, and thus the display of the updated information cannot be changed.

  As described above, when either or both of the epicenter information and the target area information are updated, the epicenter information and the target area information can be handled as a set by updating only the update flag of the epicenter information. There is an effect that the operation in the transmission operation described in this embodiment can be easily performed.

  In the warning screen display, the information can be promptly presented to the viewer by updating the warning screen every time the epicenter information or the target area information is received, and the viewer can ensure safety. effective.

  Furthermore, by updating the display of the warning screen only when the information is updated, there is an effect that the load on the digital broadcast receiving apparatus can be suppressed and the warning screen can be reliably updated.

  In addition, viewers can quickly recognize updated information and important information by changing the display of updated information and important information, or by updating the warning screen after making a warning sound. This is effective in ensuring the safety of the viewer.

  A thirteenth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake occurs, the digital that outputs a warning screen at the time of receiving the epicenter information or the target area information. The operation relates to the operation of the broadcast receiving apparatus. In addition, the present invention relates to a transmission operation for updating only the update flag of the updated information in the epicenter information and the target area information and the operation of the digital broadcast receiving apparatus.

  First, an example in which earthquake motion warning information is transmitted and an operation example of the digital broadcast receiver will be described with reference to FIG. 86 in the case where both the epicenter information and the target area information are updated.

  FIG. 86 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the terrestrial digital television broadcasting system. The example of transmission of earthquake motion information identification and the details of the receiving device operation at that time are shown. The horizontal axis represents time. FIG. 86 shows a modification of the update flag update method of FIG. 42 described in the twelfth embodiment.

  (8600) Since the start / end flag of the earthquake motion warning information is “11”, the digital broadcast receiving apparatus operates in the normal operation state.

  (8601) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts the operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 and the seismic motion warning information received this time by the processing unit 2509 based on the epicenter information received for the first time after the operation in the state corresponding to the seismic motion warning information is started. The generated warning screen is generated and output to the video output unit 3001.

  Examples of the warning screen displayed on the video output unit 3001 include FIGS. 43 to 45 described in the twelfth embodiment.

  (8602) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the hypocenter information received in (8601) and the target area information received this time is generated and output to the video output unit 3001.

  Examples of the warning screen displayed on the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  (8603) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8602) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8602) is continuously displayed.

  (8604) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8602) is read from the data judgment storage unit 2506 and compared with the update flag of the target area information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8602) is continuously displayed.

  (8605) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8602) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus stores the epicenter information received this time in the data judgment storage unit 2506, reads the epicenter information stored last time from the data judgment storage unit 2506, here the epicenter information received in (8601), and receives the epicenter received this time. Compare with information. As a result of the comparison, that is, a different part is used to present the information updated to the viewer by changing the display with other information. The processing unit 2509 generates a warning screen based on the currently received epicenter information and the latest target area information, here the target area information received in (8602), and outputs the warning screen to the video output unit 3001.

  The warning screen displayed on the video output unit 3001 is, for example, FIG. 50 described in the twelfth embodiment.

  (8606) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the epicenter information received in (8605) is read from the data judgment storage unit 2506, and the update flag of the target area information received this time is compared. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “01” to “10”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus stores the target area information received this time in the data judgment storage unit 2506, reads out the target area information stored last time from the data judgment storage unit 2506, here, the target area information received in (8602), and this time Compare with the received target area information. As a result of the comparison, that is, a different part is used to present the information updated to the viewer by changing the display with other information. The processing unit 2509 generates a warning screen based on the latest epicenter information, here the epicenter information received in (8605) and the target area information received this time, and outputs it to the video output unit 3001.

  The warning screen displayed on the video output unit 3001 is, for example, FIG. 51 described in the twelfth embodiment.

  (8607) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8606) is read from the data determination storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8606) is continuously displayed.

  Up to this point, the case where both the epicenter information and the target area information have been updated has been described. However, when only the epicenter information is updated, the update process of the warning screen related to the target area information is not performed in (8606). The remaining operation is the same except that the warning screen generated in (8605) is continuously displayed. When only the target area information is updated, the warning screen generated in (8602) is kept displayed without updating the warning screen related to the epicenter information in (8605), and the remaining operations are the same. It is.

  In the explanation here, the received epicenter information or target area information is compared with the stored seismic source information or target area information, respectively, and the updated part is analyzed, but the comparison is not performed. The warning screen may be updated. However, if the comparison is not performed, it is not possible to know which part has been updated, and thus the display of the updated information cannot be changed.

  As described above, by updating only the update flag of the updated information in the epicenter information and the target area information, it is possible to determine whether the information has been updated only by checking the update flag. There is an effect to reduce the load.

  In the warning screen display, the information can be promptly presented to the viewer by updating the warning screen every time the epicenter information or the target area information is received, and the viewer can ensure safety. effective.

  Furthermore, by updating the display of the warning screen only when the information is updated, there is an effect that the load on the digital broadcast receiving apparatus can be suppressed and the warning screen can be reliably updated.

  In addition, viewers can quickly recognize updated information and important information by changing the display of updated information and important information, or by updating the warning screen after making a warning sound. This is effective in ensuring the safety of the viewer.

  Embodiment 14 according to the present invention will be described.

  The present embodiment relates to the operation of the receiving device when the digital broadcast receiving device is activated in the twelfth and thirteenth embodiments while the earthquake motion warning information related to the earthquake that has occurred is being transmitted. An operation example of the digital broadcast receiving apparatus will be described with reference to FIGS. 87 (a), 87 (b), and 87 (c).

  FIGS. 87 (a), 87 (b), and 87 (c) show earthquake motion warnings in the case of transmitting earthquake motion warning information using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The start / end flag, update flag, page type, total number of seismic motion information, seismic motion information identification transmission example, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIGS. 87 (a) and 87 (b) are modified from the operation of the receiving apparatus of FIG. 42 described in the twelfth embodiment, and FIG. 87 (c) is the receiving apparatus of FIG. 86 described in the thirteenth embodiment. The operation of is changed.

  First, in the twelfth embodiment, when the power is turned on at the timing of power-on (1) in FIG. 87 (a), that is, the power is turned on at the timing of receiving earthquake motion warning information in the order of the epicenter information and the target area information. The case will be described.

  (8700) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts an operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 and the seismic motion warning information received this time by the processing unit 2509 based on the epicenter information received for the first time after the operation in the state corresponding to the seismic motion warning information is started. The generated warning screen is generated and output to the video output unit 3001.

  The warning screen displayed on the video output unit 3001 includes, for example, FIGS. 43 to 45 described in the twelfth embodiment.

  (8701) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the hypocenter information received in (8700) and the target area information received this time is generated and output to the video output unit 3001.

  Examples of the warning screen displayed on the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  The operations after (8702) are the same as those after (4205) described in the twelfth embodiment.

  Next, in the thirteenth embodiment, when the power is turned on at the timing of turning on the power (1) in FIG. 87 (a), that is, the power is turned on at the timing of receiving the earthquake motion warning information in the order of the epicenter information and the target area information. The case will be described.

  (8700) and (8701) are the same operations as (8700) and (8701) when the power is turned on at the timing of turning on the power (1) in the twelfth embodiment described in the present embodiment.

  The operations after (8702) are the same as those after (8605) described in the thirteenth embodiment.

  Next, in the twelfth embodiment, when the power is turned on at the timing of turning on the power (2) in FIG. 87 (b), that is, the power is turned on at the timing of receiving the earthquake motion warning information in the order of the target area information and the epicenter information. The case will be described.

  (8701) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts the operation in the state corresponding to the earthquake motion warning information. After the operation starts, it is detected that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after starting the operation in the state corresponding to the earthquake motion warning information, the data judgment storage unit 2506 stores the currently received earthquake motion warning information, and the processing unit 2509 stores the target area information received this time. A warning screen based on the original is generated and output to the video output unit 3001.

  The warning screen displayed on the video output unit 3001 displays only the right half part of FIGS. 46 to 49 described in the twelfth embodiment, for example.

  (8702) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, the epicenter information. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic motion warning information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. A warning screen based on the target area information, here the target area information received in (8701), is generated and output to the video output unit 3001.

  Furthermore, since only the target area information is received first, the update flag of the target area information received in (8701) and the update flag of the epicenter information received this time are determined in order to determine whether the earthquake motion warning information has been updated. Compare.

  As a result of the comparison, if the update flag has changed, both or one of the epicenter information received this time and the target area information received next time, here the target area information received in (8703), have been updated. The target area information received in (8703) is also stored in the data determination storage unit 2506, and processing for updating the warning screen is performed. If the update flag has not changed, nothing is done.

  Examples of the warning screen displayed on the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  The operations after (8704) are the same as those after (4207) described in the twelfth embodiment.

  Next, in the thirteenth embodiment, when the power is turned on at the time of turning on the power (2) in FIG. 87 (c), that is, the power is turned on at the timing of receiving the earthquake motion warning information in the order of the target area information and the epicenter information. The case will be described.

  (8705) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts an operation in the state corresponding to the earthquake motion warning information. After the operation starts, it is detected that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after starting the operation in the state corresponding to the earthquake motion warning information, the data judgment storage unit 2506 stores the currently received earthquake motion warning information, and the processing unit 2509 stores the target area information received this time. A warning screen based on the original is generated and output to the video output unit 3001.

  The warning screen displayed on the video output unit 3001 displays only the right half part of FIGS. 46 to 49 described in the twelfth embodiment, for example.

  (8706) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, epicenter information. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic motion warning information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. A warning screen based on the target area information, here the target area information received in (8705), is generated and output to the video output unit 3001.

  The operations after (8707) are the same as those after (8606) described in the thirteenth embodiment.

  As described above, even if the digital broadcast receiving device is activated while the earthquake motion warning information related to the earthquake that has occurred is being sent, monitoring the start / end flag of the earthquake motion warning information immediately shifts to the state corresponding to the earthquake motion warning. The viewer can ensure safety against earthquakes by using the warning screen.

  Embodiment 15 according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake occurs, a digital that outputs a warning screen when both the epicenter information and the target area information are received The operation relates to the operation of the broadcast receiving apparatus. Further, the present invention relates to a transmission operation and an operation of the digital broadcast receiving apparatus that update only the update flag of the epicenter information when either or both of the epicenter information and the target area information are updated.

  First, an example in which earthquake motion warning information is transmitted and an operation example of the digital broadcast receiving apparatus will be described with reference to FIG. 79 in the case where both the epicenter information and the target area information are updated.

  FIG. 79 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of transmission of earthquake motion information identification and the details of the receiving device operation at that time are shown. The horizontal axis represents time. FIG. 79 shows a modification of the operation of the receiving apparatus of FIG. 33A described in the fifth embodiment.

  (7900) Since the start / end flag of the earthquake motion warning information is “11”, the digital broadcast receiving apparatus operates in the normal operation state.

  (7901) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts an operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic source information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. Here, since the target area information is not received, the generation of the warning screen and the output of the warning screen are not performed.

  (7902) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the hypocenter information received in (7901) and the target area information received this time is generated and output to the video output unit 3001.

  Examples of the warning screen output to the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  (7903) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the epicenter information stored last time, here, the update flag of the epicenter information received in (7901) is read from the data determination storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (7902) is continuously displayed.

  (7904) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. After detection, the previously stored target area information, here, the update flag of the target area information received in (7902) is read from the data determination storage unit 2506 and compared with the update flag of the target area information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (7902) is continuously displayed.

  (7905) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the epicenter information stored last time, here, the update flag of the epicenter information received in (7901) is read from the data determination storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus determines that the epicenter information may have been updated, and stores the epicenter information received this time in the data determination storage unit 2506. Thereafter, the previously stored epicenter information, here the epicenter information received at (7901), is read from the data judgment storage unit 2506 and compared with the seismic source information received this time. As a result of the comparison, if there is a different part, it is determined that the epicenter information has been updated, and when the target area information is received, the warning screen is updated using the seismic source information received this time. If there is no different part, it is determined that the epicenter information is not updated, and the part regarding the epicenter information on the warning screen is not updated. Here, it is assumed that there are different parts as a result of the comparison. Since the target area information has not been received, the warning screen is not generated and the warning screen is not output. The comparison result is also used to change the display of updated information.

  (7906) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. After detection, the previously stored target area information, here, the update flag of the target area information received in (7902) is read from the data determination storage unit 2506, and the update flag of the target area information received this time is compared. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus determines that the target area information may have been updated, and stores the target area information received this time in the data determination storage unit 2506. Thereafter, the target area information stored last time from the processing unit 2509, here the target area information received in (7902), is read out and compared with the target area information received this time. As a result of the comparison, if there is a different part, it is determined that the target area information has been updated, and the warning screen is updated using the target area information received this time. If there is no different part, it is determined that the target area information received this time has not been updated, and the part related to the target area information on the warning screen is not updated. Here, it is assumed that there are different parts as a result of the comparison. The processing unit 2509 generates a warning screen based on the latest epicenter information, here the epicenter information received in (7905) and the target area information received this time, and outputs it to the video output unit 3001. The comparison result is also used to change the display of updated information.

  The warning screen displayed on the video output unit 3001 is, for example, FIG. 51 described in the twelfth embodiment.

  (7907) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After detection, the epicenter information stored last time, here, the update flag of the epicenter information received in (7905) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (7906) is continuously displayed.

  So far we have explained the case where both the epicenter information and the target area information have been updated. However, when only the epicenter information was updated, it was received at (7906) when the warning screen was updated at (7906). The remaining operation is the same except that the target area information received in (7902) is used instead of the target area information. When only the target area information is updated, when the warning screen is updated in (7906), the epicenter information received in (7901) is used instead of the epicenter information received in (7905). The operation of is the same.

  In the description here, when the update flag is updated, whether the information is actually updated is compared. However, the warning screen may be updated as if the information was updated without performing the comparison. . However, if the comparison is not performed, it is not possible to know which part has been updated, and thus the display of the updated information cannot be changed.

  As described above, when either or both of the epicenter information and the target area information are updated, the epicenter information and the target area information can be handled as a set by updating only the update flag of the epicenter information. The operation in the transmission operation described in the present embodiment becomes easy.

  In the warning screen display, the warning screen is updated when both the epicenter information and the target area information are received, so that a warning screen with the epicenter information and the target area information can be presented, and viewers can reliably There is an effect of ensuring safety.

  Furthermore, by updating the display of the warning screen only when the information is updated, there is an effect that the load on the digital broadcast receiving apparatus can be suppressed and the warning screen can be reliably updated.

  In addition, viewers can quickly recognize updated information and important information by changing the display of updated information and important information, or by updating the warning screen after making a warning sound. This is effective in ensuring the safety of the viewer.

  A sixteenth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake occurs, a digital that outputs a warning screen when both the epicenter information and the target area information are received The present invention relates to the screen display operation of the broadcast receiving apparatus. In addition, the present invention relates to a transmission operation for updating only the update flag of the updated information in the epicenter information and the target area information and the operation of the digital broadcast receiving apparatus.

  First, an example of transmitting earthquake motion warning information and an example of operation of the digital broadcast receiving apparatus will be described with reference to FIG. 88 when both the epicenter information and the target area information are updated.

  FIG. 88 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of transmission of earthquake motion information identification and the details of the receiving device operation at that time are shown. The horizontal axis represents time. FIG. 88 shows a modification of the update method of the update flag shown in FIG. 79 described in the fifteenth embodiment.

  (8800) Since the start / end flag of the earthquake motion warning information is “11”, the digital broadcast receiving apparatus operates in the normal operation state.

  (8801) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts the operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic source information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. Here, since the target area information is not received, the generation of the warning screen and the output of the warning screen are not performed.

  (8802) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the hypocenter information received in (8801) and the target area information received this time is generated and output to the video output unit 3001.

  Examples of the warning screen output to the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  (8803) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8802) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8802) is continuously displayed.

  (8804) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8802) is read from the data judgment storage unit 2506, and the update flag of the target area information received this time is compared. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8802) is continuously displayed.

  (8805) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8802) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has changed from “00” to “01”, a process for updating the warning screen is performed.

  The digital broadcast receiving apparatus stores the epicenter information received this time in the data judgment storage unit 2506, reads the epicenter information stored last time from the data judgment storage unit 2506, here the epicenter information received in (8801), and the seismic source received this time. Compare with information. As a result of the comparison, that is, a different part is used to present the information updated to the viewer by changing the display with other information.

  In addition, when the target area information is received, data indicating whether or not the epicenter information has been updated is stored in the data determination storage unit 2506 in order to determine whether or not the epicenter information has been updated. For example, “1” indicates that the epicenter information has been updated, and “0” indicates that the epicenter information update flag indicating that the epicenter information has not been updated is prepared in the data determination storage unit 2506. it can. The epicenter information update flag is assumed to be “0” immediately after starting the digital broadcast receiving apparatus. Here, since the epicenter information has been updated, the epicenter information update flag in the data judgment storage unit 2506 is changed from “0” to “1”. Further, since the target area information is not received, the warning screen is not generated, and the currently displayed warning screen, here, the warning screen generated in (8802) is continuously displayed.

  (8806) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the epicenter information received at (8805) is read from the data judgment storage unit 2506, and the update flag of the target area information received this time is compared. Further, the epicenter information update flag is read from the data judgment storage unit 2506, and it is determined whether or not the epicenter information received in (8805) has been updated.

  As a result of comparison and determination, if the update flag has changed and the epicenter information has been updated, the latest epicenter information, the epicenter information received in this case (8805) and the target area information received this time A warning screen based on the above is generated and output to the video output unit 3001.

  If the update flag has changed and the epicenter information has not been updated, the warning screen based on the latest epicenter information, the epicenter information received in this case (8801) and the target area information received this time Is output to the video output unit 3001.

  If the update flag has not changed and the epicenter information has been updated, the latest epicenter information, the epicenter information received in this case (8805) and the latest target area information, in this case (8802) are received. A warning screen based on the target area information is generated and output to the video output unit 3001.

  If the update flag has not changed and the epicenter information has not been updated, the currently displayed warning screen, in this case (8802), continues to be displayed.

  Here, since the update flag has changed and the epicenter information has been updated, a warning screen based on the epicenter information received in (8805) and the target area information received this time is generated and output as a video. To the unit 3001.

  If the update flag has changed, the target area information received at (8802) is read from the data determination storage unit 2506, and the target area information received this time is compared. As a result of the comparison, that is, a different part is used to present the information updated to the viewer by changing the display with other information. Here, since the update flag has changed from “01” to “10”, the target area information received at (8802) is read from the data determination storage unit 2506, and the target area information received this time is compared. The result of the comparison is used to present the information updated to the viewer by changing the display with other information.

  The warning screen displayed on the video output unit 3001 is, for example, FIG. 51 described in the twelfth embodiment.

  (8807) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, that the epicenter information is received. After the detection, the previously stored earthquake motion warning information, here, the update flag of the target area information received in (8806) is read from the data judgment storage unit 2506 and compared with the update flag of the epicenter information received this time. As a result of the comparison, if the update flag has changed, processing for updating the warning screen is performed, and if the update flag has not changed, display of the currently displayed warning screen is continued. Here, since the update flag has not changed, the warning screen generated in (8806) is continuously displayed.

  So far, the case where both the epicenter information and the target area information have been updated has been described. However, when only the epicenter information is updated, the epicenter information received in (8805) in (8806) and (8802) A warning screen based on the target area information is generated and output to the video output unit 3001, and the remaining operations are the same. When only the target area information is updated, the warning screen related to the epicenter information is not updated in (8605), and the epicenter information received in (8801) in (8806) and the target area information received this time are The remaining warning operation is the same except that a warning screen based on the above is generated and output to the video output unit 3001.

  In the description here, when the update flag is updated, whether the information is actually updated is compared. However, the warning screen may be updated as if the information was updated without performing the comparison. . However, if the comparison is not performed, it is not possible to know which part has been updated, and thus the display of the updated information cannot be changed.

  As described above, by updating only the update flag of the updated information in the epicenter information and the target area information, it is possible to determine whether the information has been updated only by checking the update flag. There is an effect of reducing the load.

  In the warning screen display, the warning screen is updated when both the epicenter information and the target area information are received, so that a warning screen with the epicenter information and the target area information can be presented, and viewers can reliably There is an effect of ensuring safety.

  Furthermore, by updating the display of the warning screen only when the information is updated, there is an effect that the load on the digital broadcast receiving apparatus can be suppressed and the warning screen can be reliably updated.

  In addition, viewers can quickly recognize updated information and important information by changing the display of updated information and important information, or by updating the warning screen after making a warning sound. This is effective in ensuring the safety of the viewer.

  A seventeenth embodiment according to the present invention will be described.

  This embodiment relates to the operation of the receiving apparatus when the digital broadcast receiving apparatus is activated while the seismic motion warning information related to the occurred earthquake is being transmitted in the fifteenth and sixteenth embodiments. An operation example of the digital broadcast receiving apparatus will be described with reference to FIGS. 89 (a), 89 (b), and 89 (c).

  FIGS. 89 (a), 89 (b), and 89 (c) show the seismic motion warning when the seismic motion warning information is transmitted using the AC signal included in the segment number # 0 in the terrestrial digital television broadcasting system. The start / end flag, update flag, page type, total number of seismic motion information, seismic motion information identification transmission example, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. 89 (a) and 89 (b) are modifications of the operation of the receiving apparatus of FIG. 79 described in the fifteenth embodiment, and FIG. 89 (c) is the same as that of FIG. 88 described in the sixteenth embodiment. The operation of the receiving device is changed.

  First, in the fifteenth embodiment, when the power is turned on at the timing of power-on (1) in FIG. 89 (a), that is, the power is turned on at the timing of receiving earthquake motion warning information in the order of the epicenter information and the target area information. The case will be described.

  (8900) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts an operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic source information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. Here, since the target area information is not received, the generation of the warning screen and the output of the warning screen are not performed.

  (8901) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since this is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the current earthquake motion warning information received in the data judgment storage unit 2506 is stored, and the latest seismic source information, here in the processing unit 2509 A warning screen based on the hypocenter information received in (8900) and the target area information received this time is generated and output to the video output unit 3001.

  Examples of the warning screen output to the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  The operations after (8902) are the same as those after (7905) described in the fifteenth embodiment.

  Next, in the sixteenth embodiment, when the power is turned on at the timing of turning on the power (1) in FIG. 89 (a), that is, the power is turned on at the timing of receiving the earthquake motion warning information in the order of the epicenter information and the target area information. The case will be described.

  (8900) and (8901) are the same operations as (8900) and (8901) when the power is turned on at the timing of power-on (1) in the fifteenth embodiment described in the present embodiment.

  The operations after (8902) are the same as those after (8805) described in the sixteenth embodiment.

  Next, in the fifteenth embodiment, when the power is turned on at the time of power-on (2) in FIG. 89 (b), that is, the power is turned on at the timing of receiving earthquake motion warning information in the order of the target area information and the epicenter information. The case will be described.

  (8901) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts the operation in the state corresponding to the earthquake motion warning information. After the operation starts, it is detected that the page type of the earthquake motion warning information is “0”, that is, the target area information is received. Since it is the target area information received for the first time after the operation in the state corresponding to the earthquake motion warning information is started, the earthquake motion warning information received this time is stored in the data judgment storage unit 2506. Here, since the epicenter information is not received, the generation of the warning screen and the output of the warning screen are not performed.

  (8902) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “1”, that is, the epicenter information. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic motion warning information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. A warning screen based on the target area information, here the target area information received in (8901), is generated and output to the video output unit 3001.

  Furthermore, since only the target area information is received first, the update flag of the target area information received in (8901) and the update flag of the epicenter information received this time are determined in order to determine whether the earthquake motion warning information has been updated. Compare.

  As a result of the comparison, if the update flag has changed, both or one of the epicenter information received this time and the target area information received next time, here the target area information received in (8903) has been updated. The target area information received in (8703) is also stored in the data determination storage unit 2506, and processing for updating the warning screen is performed. If the update flag has not changed, nothing is done.

  Examples of the warning screen displayed on the video output unit 3001 include FIGS. 46 to 49 described in the twelfth embodiment.

  After (8904), the operation is the same as (7907) described in the fifteenth embodiment.

  Next, in the sixteenth embodiment, when the power is turned on at the time of turning on the power (2) in FIG. 89 (c), that is, the power is turned on at the timing of receiving the earthquake motion warning information in the order of the target area information and the epicenter information. The case will be described.

  (8905) Upon detecting “00” of the start / end flag of the earthquake motion warning information, the digital broadcast receiving apparatus starts the operation in the state corresponding to the earthquake motion warning information. After the operation is started, it is detected that the page type of the earthquake alarm information is “1”, that is, that the epicenter information is received. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic source information is received for the first time after the operation in the state corresponding to the earthquake motion warning information is started. Here, since the target area information is not received, the generation of the warning screen and the output of the warning screen are not performed.

  (8906) The digital broadcast receiving apparatus detects that the page type of the earthquake motion warning information is “1”, that is, epicenter information. The seismic motion warning information received this time is stored in the data judgment storage unit 2506 because the seismic motion warning information is received for the first time after the operation in the state corresponding to the seismic motion warning information is started. A warning screen is generated based on the target area information, here the target area information received in (8905), and is output to the video output unit 3001.

  The operations after (8907) are the same as those after (8806) described in the sixteenth embodiment.

  As described above, even if the digital broadcast receiving device is activated while the earthquake motion warning information related to the earthquake that has occurred is being sent, monitoring the start / end flag of the earthquake motion warning information immediately shifts to the state corresponding to the earthquake motion warning. The viewer can ensure safety against earthquakes by using the warning screen.

  An eighteenth embodiment according to the present invention will be described.

  In this embodiment, when a second earthquake occurs in a transmission operation in which epicenter information and target area information are alternately transmitted one by one, warning screens relating to the first earthquake and the second earthquake are predetermined. The present invention relates to a screen display operation of a digital broadcast receiving apparatus that alternately outputs every time.

  A specific example of the screen display operation in this case will be described with reference to FIGS. Since the operation related to the first earthquake and the update operation example of the warning screen when the epicenter information and the target area information are updated have already been described in the twelfth embodiment, description thereof is omitted here. In addition, it is assumed that the seismic motion warning information (seismic source information and target area information) related to the first earthquake has already been acquired.

  FIG. 52 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. Fig. 5 shows an example of sending out seismic motion information identification and details of screen display of the receiving device at that time. The horizontal axis represents time. FIG. 52 shows a modification of the operation of the receiving apparatus of FIG. 36B described in the eighth embodiment.

  (5200) The digital broadcast receiving apparatus detects that the total number of earthquake motion information in the earthquake motion warning information has changed from “0” to “1”, and determines that a second earthquake has occurred. Further, it is determined that the seismic motion information identification is “1”, that is, the seismic motion warning information related to the second earthquake, the page type is “1”, that is, the epicenter information, and the data received in the data determination storage unit 2506 this time The earthquake motion warning information of the eye earthquake is stored, and a second earthquake warning screen based on the epicenter information is generated by the processing unit 2509 and output to the video output unit 3001.

  The processing unit 2509 uses the clock unit 2504 and the current time setting unit 2505 to measure the display time of the warning screen. When the display time reaches a predetermined time, the warning screen of the first earthquake is output again, and the display time of the warning screen is measured. By repeating this, the first earthquake warning screen and the second earthquake warning screen can be displayed alternately. The predetermined time may be stored in the processing unit 2509, the clock unit 2504, or the current time setting unit 2505, or the storage medium may be stored in the digital broadcast receiving device, or may be stored in the digital broadcasting receiving device. May be.

  FIG. 53 shows an example of a warning screen displayed on the video output unit 3001. The character string displayed by the character string 4300 indicating the earthquake early warning shown in FIG. By adding and displaying “of the first earthquake”, the viewer is presented with the warning screen for the first earthquake.

  FIG. 54 shows an example of a warning screen displayed on the video output unit 3001. The character string displayed as the character string 4300 indicating the emergency earthquake warning in FIG. By adding and displaying “of the second earthquake”, the viewer is presented with the warning screen for the second earthquake. Here, “First earthquake” and “Second earthquake” are displayed so that viewers can easily distinguish between the first earthquake warning screen and the second earthquake warning screen. It is for making changes. In addition to FIGS. 53 and 54, FIG. 49 may be used for the first earthquake warning screen, and FIG. 45 may be used for the second earthquake warning screen.

  (5201) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. The digital broadcast receiving apparatus determines from the transmission pattern that the target area information received this time is that of the second earthquake, and stores the target area information of the second earthquake received this time in the data determination storage unit 2506. The processing unit 2509 generates a warning screen for the second earthquake based on the epicenter information received in (5200) and the target area information received this time, and outputs the warning screen to the video output unit 3001.

  The processing unit 2509 uses the clock unit 2504 and the current time setting unit 2505 to measure the display time of the warning screen. When the display time reaches a predetermined time, the warning screen of the first earthquake is output again, and the display time of the warning screen is measured. By repeating this, the first earthquake warning screen and the second earthquake warning screen can be displayed alternately. The predetermined time may be stored in the processing unit 2509, the clock unit 2504, or the current time setting unit 2505, or the storage medium may be stored in the digital broadcast receiving device, or may be stored in the digital broadcasting receiving device. May be.

  FIG. 55 is an example of a warning screen displayed on the video output unit 3001. In FIG. 55, viewing is performed by adding “first earthquake” indicating that it is the first earthquake warning screen to the character string displayed by the character string 4300 indicating the earthquake early warning shown in FIG. Presents the first earthquake warning screen.

  FIG. 56 shows an example of a warning screen displayed on the video output unit 3001. In FIG. 56, viewing is performed by adding “second earthquake” indicating that it is a warning screen of the second earthquake to the character string displayed by the character string 4300 indicating the earthquake early warning in FIG. Presents a warning screen for the second earthquake. “First earthquake” and “Second earthquake” are displayed so that viewers can easily distinguish between the first earthquake warning screen and the second earthquake warning screen. It is for making changes. In addition to FIGS. 55 and 56, FIG. 46 may be used for the first earthquake warning screen, and FIG. 47 may be used for the second earthquake warning screen. Furthermore, as described in the thirteenth embodiment, when both the epicenter information and the target area information can be received, a second earthquake warning screen may be displayed.

  As described above, when the second earthquake occurs in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, the warning screen regarding the first earthquake and the second earthquake is displayed every predetermined time. By outputting the information alternately, it is possible to present important information about the earthquake that has occurred to the viewer, and the viewer has an effect of making it easier to grasp the information about the earthquake.

  Furthermore, by changing the display of the warning screen for the first earthquake and the warning screen for the second earthquake, it becomes easier to grasp the information. Furthermore, by monitoring the total number of earthquake motion information and the identification of earthquake motion information in the earthquake motion warning information, the second earthquake warning screen can be displayed quickly when the second earthquake information is received, and viewers can be sure. This has the effect of ensuring safety.

  A nineteenth embodiment according to the present invention will be described.

  This embodiment is different from the eighteenth embodiment in the method of displaying the warning screen. Hereinafter, description will be made with reference to FIG. 52 described in the eighteenth embodiment. Here, when the second earthquake occurs in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, the warning screen regarding the first earthquake and the second earthquake is simultaneously output. The screen display operation of the digital broadcast receiving apparatus will be described. Since the operation related to the first earthquake and the update operation example of the warning screen when the epicenter information and the target area information are updated have already been described in the twelfth embodiment, description thereof is omitted here. In addition, it is assumed that the seismic motion warning information (seismic source information and target area information) related to the first earthquake has already been acquired.

  (5200) The digital broadcast receiving apparatus detects that the total number of earthquake motion information in the earthquake motion warning information has changed from “0” to “1”, and determines that a second earthquake has occurred. Further, it is determined that the seismic motion information identification is “1”, that is, the seismic motion warning information related to the second earthquake, the page type is “1”, that is, the epicenter information, and the data received in the data determination storage unit 2506 this time The earthquake motion warning information for the second earthquake is stored, and the second earthquake warning screen based on the epicenter information is generated by the processing unit 2509. The first earthquake and the second earthquake warning screen are simultaneously displayed. To the video output unit 3001.

  FIG. 80 shows an example of a warning screen displayed on the video output unit 3001. The first earthquake is arranged in the format of FIG. 43 and the second earthquake is arranged in the format of FIG. 44 on the left and right sides of the screen. is there. 8000 is a character string indicating that it is an emergency earthquake warning for the first earthquake, and 8001 is a character string indicating that it is an emergency earthquake warning for the second earthquake. Here, “Earthquake Early Warning (1)” and “Emergency Earthquake Early Warning (2)” are displayed so that the viewer can easily distinguish between the first earthquake warning screen and the second earthquake warning screen. It is for making changes.

  FIG. 81 shows an example of a warning screen displayed on the video output unit 3001, in which the first earthquake warning screen and the second earthquake warning screen arranged on the left and right in FIG. 80 are arranged vertically. .

  (5201) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. The digital broadcast receiving apparatus determines from the transmission pattern that the target area information received this time is that of the second earthquake, and stores the target area information of the second earthquake received this time in the data determination storage unit 2506. The second earthquake warning screen is generated based on the epicenter information received in (5200) by the processing unit 2509 and the target area information received this time, and the first earthquake and the second earthquake warning are generated. The screen is output to the video output unit 3001 at the same time. The method of outputting simultaneously and the structure of the warning screen are the same as (5200) of this embodiment.

  As described above, when the second earthquake occurs in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, the warning screen regarding the first earthquake and the second earthquake is displayed at the same time. Thus, it is possible to present important information about the earthquake that has occurred to the viewer, and the viewer can easily understand the information about the earthquake.

  Furthermore, by changing the display of the warning screen for the first earthquake and the warning screen for the second earthquake, it becomes easier to grasp the information. Furthermore, by monitoring the total number of earthquake motion information and the identification of earthquake motion information in the earthquake motion warning information, the second earthquake warning screen can be displayed quickly when the second earthquake information is received, and viewers can be sure. This has the effect of ensuring safety.

  A twentieth embodiment according to the present invention will be described.

  The present embodiment is different from the eighteenth and nineteenth embodiments in the display method of the warning screen. Hereinafter, description will be made with reference to FIG. 52 described in the eighteenth embodiment. Here, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when the second earthquake occurs, the first earthquake and the second earthquake arrive earlier The screen display operation of the digital broadcast receiver that outputs only the earthquake alarm screen will be described. Since the operation related to the first earthquake and the update operation example of the warning screen when the epicenter information and the target area information are updated have already been described in the twelfth embodiment, description thereof is omitted here. In addition, it is assumed that the seismic motion warning information (seismic source information and target area information) related to the first earthquake has already been acquired.

  (5200) The digital broadcast receiving apparatus detects that the total number of earthquake motion information in the earthquake motion warning information has changed from “0” to “1”, and determines that a second earthquake has occurred. Further, it is determined that the seismic motion information identification is “1”, that is, the seismic motion warning information related to the second earthquake, the page type is “1”, that is, the epicenter information, and the data received in the data determination storage unit 2506 this time The seismic motion warning information of the second earthquake is stored, and the processing unit 2509 has two pieces of information from the first earthquake's epicenter information, the estimated arrival time or grace time of the first earthquake, and the second earthquake's source information 5200 Calculate and compare the estimated arrival time or grace time of the eye earthquake. As a result of comparison, if the first earthquake arrives earlier than the second earthquake, only the first earthquake warning screen is output, and the second earthquake arrives earlier than the first earthquake In this case, only the warning screen for the second earthquake is output. Since the method for calculating the estimated arrival time and the grace time has already been described in the twelfth embodiment, description thereof is omitted here. The warning screen uses the example of the warning screen described in the twelfth embodiment.

  (5201) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. If the first earthquake arrives earlier than the second earthquake, the warning screen for the second earthquake is not displayed, so nothing is processed. If the second earthquake arrives earlier than the first earthquake, the warning screen is updated. When updating the warning screen, the digital broadcast receiving apparatus determines from the transmission pattern that the target area information received this time is that of the second earthquake, and the second earthquake received this time in the data judgment storage unit 2506. Is generated, and the second earthquake warning screen is generated based on the epicenter information received in (5200) by the processing unit 2509 and the currently received target region information, and is output to the video output unit 3001. To do.

  The warning screen displayed on the video output unit 3001 includes, for example, FIGS. 43 to 51 described in the twelfth embodiment.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when the second earthquake occurs, the earthquake that arrives earlier among the first and second earthquakes By displaying only the alarm screen, it is possible to present important information about the earthquake that has occurred to the viewer, and the viewer can easily grasp the information about the earthquake.

  In addition, by displaying only warning screens for earthquakes that arrive earlier, viewers can be shown which earthquake should be secured, and viewers must ensure safety. There is an effect that can.

  A twenty-first embodiment according to the present invention will be described.

  The present embodiment is different from the eighteenth to twentieth embodiments in the display method of the warning screen. Hereinafter, description will be made with reference to FIG. 52 described in the eighteenth embodiment. Here, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when the second earthquake occurs, the digital broadcast receiving device of the first earthquake and the second earthquake The screen display operation of the digital broadcast receiving apparatus that outputs only the alarm screen for earthquakes in which the place where is installed is included in the target area will be described. Since the operation related to the first earthquake and the update operation example of the warning screen when the epicenter information and the target area information are updated have already been described in the twelfth embodiment, description thereof is omitted here. In addition, it is assumed that the seismic motion warning information (seismic source information and target area information) related to the first earthquake has already been acquired.

  (5200) The digital broadcast receiving apparatus detects that the total number of earthquake motion information in the earthquake motion warning information has changed from “0” to “1”, and determines that a second earthquake has occurred. Further, it is determined that the seismic motion information identification is “1”, that is, the seismic motion warning information related to the second earthquake, the page type is “1”, that is, the epicenter information, and the data received in the data determination storage unit 2506 this time Memorize earthquake motion warning information for eye earthquake. Whether or not the place where the digital broadcast receiving apparatus is installed is included in the target area requires target area information, and no warning screen is generated or output here.

  (5201) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. The digital broadcast receiving apparatus determines from the transmission pattern that the target area information received this time is that of the second earthquake, and stores the target area information of the second earthquake received this time in the data determination storage unit 2506. . The processing unit 2509 determines whether the digital broadcast receiving device is included in the target area of the second earthquake. In addition, the processing unit 2509 reads the first earthquake target area information from the data determination storage unit 2506 and determines whether the first earthquake target area includes an installation location for digital broadcast reception.

  As a result, if the installation location of the digital broadcast receiver is included only in the first earthquake target area, only the first earthquake warning screen is output and the second earthquake target area is output. If only the location where the digital broadcast receiving apparatus is installed is included, only the alarm screen for the second earthquake is output. Furthermore, when the installation location of the digital broadcast receiving device is not included in the target areas of both the first earthquake and the second earthquake, the warning screen described in the fourteenth and fifteenth embodiments is output. Or the warning screen is not output. When the installation location of the digital broadcast receiving device is included in the target areas of both the first earthquake and the second earthquake, the warning screen described in the fourteenth and fifteenth embodiments is output. Alternatively, a warning screen that gives a stronger warning than the example of the warning screen described in the twelfth embodiment is output.

  FIG. 57 is an example of a warning screen that is output to the video output unit 3001 when the installation location of the digital broadcast receiving device is included in both target areas of two earthquakes. In FIG. 57, an emphasized character string 5700 indicating an earthquake early warning, an emphasized character string 5701 indicating the occurrence of an earthquake, and an emphasized character string 5702 for alerting the viewer are displayed. In FIG. 57, as an emphasis method, a character string indicating that earthquakes are continuously displayed is displayed, and each character string is emphasized in bold. The highlighting method includes shading the character or background, changing the color, or blinking. The highlighting here is for changing the display of information.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when the second earthquake occurs, the digital broadcast receiving device is in the first earthquake and the second earthquake. By displaying only the alarm screen for earthquakes where the installed location is included in the target area, it is possible to present important information about the earthquake that has occurred to the viewer. There is an effect that makes it easier to grasp.

  Moreover, when it is included in the target area of both of the two earthquakes, a stronger warning can be given, and the viewer can surely ensure safety.

  A twenty-second embodiment according to the present invention will be described.

  The present embodiment is different from the eighteenth to twenty-first embodiments in the display method of the warning screen. Hereinafter, description will be made with reference to FIG. 52 described in the eighteenth embodiment. Here, in the transmission operation that transmits the epicenter information and the target area information alternately one by one, when the second earthquake occurs, the warning screen for the first earthquake and the second earthquake is synthesized The screen display operation of the output digital broadcast receiving apparatus will be described. Since the operation related to the first earthquake and the update operation example of the warning screen when the epicenter information and the target area information are updated have already been described in the twelfth embodiment, description thereof is omitted here. In addition, it is assumed that the seismic motion warning information (seismic source information and target area information) related to the first earthquake has already been acquired.

  (5200) The digital broadcast receiving apparatus detects that the total number of earthquake motion information in the earthquake motion warning information has changed from “0” to “1”, and determines that a second earthquake has occurred. Further, it is determined that the seismic motion information identification is “1”, that is, the seismic motion warning information related to the second earthquake, the page type is “1”, that is, the epicenter information, and the data received in the data determination storage unit 2506 this time Stores earthquake motion warning information for the second earthquake, generates a second earthquake warning screen based on the epicenter information in the processing unit 2509, and synthesizes the first and second earthquake warning screens Then, the video is output to the video output unit 3001.

  FIG. 82 is an example of a warning screen displayed on the video output unit 3001, and a warning screen generated from the epicenter information of the first earthquake and the epicenter information of the second earthquake is synthesized and displayed on the left side of the screen. Yes. In addition, a warning screen generated from the first earthquake target area information is displayed on the right side of the screen. 8200 is the time of occurrence of the first earthquake, and 8201 is the time of occurrence of the second earthquake. A character string 4300 indicating an earthquake early warning and a character string 4301 indicating an earthquake are displayed one by one as information common to two earthquakes.

  FIG. 83 shows an example of a warning screen displayed on the video output unit 3001, and a warning screen generated from the epicenter information of the first earthquake and the epicenter information of the second earthquake is synthesized and displayed on the left side of the screen. Yes. In addition, a warning screen generated from the first earthquake target area information is displayed on the right side of the screen. 8300 is a grace time for the first earthquake, and 8301 is a grace time for the second earthquake. A character string 4300 indicating an earthquake early warning and a character string 4301 indicating an earthquake are displayed one by one as information common to two earthquakes.

  FIG. 84 shows an example of a warning screen displayed on the video output unit 3001. A warning screen with a shorter time is displayed between the first earthquake postponement time 8200 and the second earthquake postponement time 8201 in FIG. ing.

  (5201) The digital broadcast receiving apparatus detects that the page type of the earthquake alarm information is “0”, that is, the target area information is received. The digital broadcast receiving apparatus determines from the transmission pattern that the target area information received this time is that of the second earthquake, and stores the target area information of the second earthquake received this time in the data determination storage unit 2506. The second earthquake warning screen is generated based on the epicenter information received in (5200) by the processing unit 2509 and the target area information received this time, and the first earthquake and the second earthquake warning are generated. The screens are combined and output to the video output unit 3001.

  FIG. 85 shows an example of a warning screen displayed on the video output unit 3001. The map on the right side of FIG. 83 is changed to a composite of the first earthquake target area and the second earthquake target area. ing. In addition, the epicenter of the first earthquake and the epicenter of the second earthquake are displayed. 8500 is the target area of the first earthquake, 8501 is the target area of the second earthquake, 8502 is the target area of both the first and second earthquakes, and 8503 is the epicenter of the first earthquake. , 8504 is the epicenter of the second earthquake. The first earthquake target area is a horizontal stripe pattern, the second earthquake target area is a vertical stripe pattern, and the first and second earthquake target areas are both horizontal and vertical. The pattern is displayed. Other display methods include changing colors. The reason for changing the display method here is to change the display of information so that the viewer can easily distinguish the target area of the first earthquake and the second earthquake.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when the second earthquake occurs, the warning screen regarding the first earthquake and the second earthquake is synthesized and displayed. By doing so, it is possible to present important information regarding the earthquake that has occurred to the viewer, and the viewer can easily grasp the information regarding the earthquake.

  Furthermore, by changing the display of the warning screen for the first earthquake and the warning screen for the second earthquake, it becomes easier to grasp the information. Furthermore, by monitoring the total number of earthquake motion information and the identification of earthquake motion information in the earthquake motion warning information, the second earthquake warning screen can be displayed quickly when the second earthquake information is received, and viewers can be sure. This has the effect of ensuring safety.

  A twenty-third embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when two earthquakes occur and one of them ends, the seismic motion of the completed earthquake is separated by the transmission pattern. The present invention relates to a seismic motion warning sending method and a receiving device operation which finish sending warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, the transmission pattern is defined as the time when the epicenter information and the target area information of both the second earthquake and the first earthquake are all transmitted. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 58 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends during transmission of the source information of the second earthquake, earthquake motion warning information indicated by (5800) to (5803) is transmitted according to the transmission pattern.

  (5800) Send out the epicenter information of the second earthquake. The digital broadcast receiver receives the epicenter information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5801) The target area information of the second earthquake is transmitted. The digital broadcast receiving apparatus receives the target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5802) Send the source information of the first earthquake. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiver receives the epicenter information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5803) Send out the target area information of the first earthquake. The digital broadcast receiving apparatus receives target area information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5804) Since the transmission pattern is separated, the total number of earthquake motion information is changed from “1” to “0”, and the epicenter information of the first earthquake is transmitted. After (5804), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake's epicenter information and detects that the total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, one of two earthquakes has ended. To do. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the source information of the second earthquake is transmitted in (5804). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The epicenter information is sent out. After (5804), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, the transmission pattern is separated when all the epicenter information and the target area information of both the second earthquake and the first earthquake are transmitted. As described above, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-fourth embodiment according to the present invention will be described.

  This embodiment differs from the twenty-third embodiment in the update flag update method. Hereinafter, a description will be given with reference to FIG. The twenty-third embodiment is a transmission method that does not update the update flag even if the total number of seismic motion information changes. However, in this embodiment, a case of a transmission method that updates the update flag when the total number of seismic motion information changes will be described. .

  FIG. 90 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 90 is a modification of the update flag update method of FIG. 58 described in the twenty-third embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9000) Since the transmission pattern is divided, the total earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the source information of the first earthquake is transmitted. After (9000), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiving apparatus receives the epicenter information of the first earthquake, detects that the update flag is “01” to “10”, that is, the epicenter information is updated, and checks the total number of seismic motion information. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the source information of the second earthquake is transmitted at (9000). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The epicenter information is sent out. After (9000), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, the transmission pattern is separated when all the epicenter information and the target area information of both the second earthquake and the first earthquake are transmitted. As described above, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-fifth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when two earthquakes occur and one of the earthquakes ends, the transmission pattern is delimited, The present invention relates to an earthquake motion alarm sending method and a receiving device operation for ending the transmission of earthquake motion warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, the transmission pattern is defined as the time when the epicenter information and the target area information of both the second earthquake and the first earthquake are all transmitted. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 59 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends during transmission of the first target area information of the second earthquake, (5900) to (5905) are processed according to the transmission pattern.

  (5900) The first one of the target area information of the second earthquake is transmitted. The digital broadcast receiving apparatus receives the first target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5901) Send the second of the target area information of the second earthquake. The digital broadcast receiving apparatus receives the second target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5902) The first source information of the first earthquake is transmitted. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiving apparatus receives the first source information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5903) Send the second source information of the first earthquake. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiving apparatus receives the second source information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5904) Send out the first of the target area information of the first earthquake. The digital broadcast receiving apparatus receives the first target area information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5905) The second of the target area information of the first earthquake is transmitted. The digital broadcast receiving apparatus receives the second target area information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (5906) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, and the first source information of the first earthquake is transmitted. After (5906), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of ground motion information in the ground motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first point of the epicenter information of the second earthquake is transmitted in (5906). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (5906), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, the transmission pattern when the epicenter information and the target area information of both the second earthquake and the first earthquake are all transmitted As a delimiter, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-sixth embodiment according to the present invention will be described.

  This embodiment differs from the twenty-fifth embodiment in the update flag update method. Hereinafter, a description will be given with reference to FIG. The embodiment 25 is a transmission method in which the update flag is not updated even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method in which the update flag is updated when the total number of seismic motion information changes will be described. .

  FIG. 91 shows an earthquake motion warning start / end flag, an update flag, a page type, and a total number of earthquake motion information when transmitting earthquake motion warning information using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 91 shows a modification of the update flag update method of FIG. 59 described in the twenty-fifth embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9100) Since the transmission pattern is separated, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake is obtained. Send it out. After (9100), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first source information of the second earthquake is transmitted in (9100). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (9100), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, the transmission pattern when the epicenter information and the target area information of both the second earthquake and the first earthquake are all transmitted As a delimiter, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-seventh embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, when two earthquakes occur and one of them ends, the transmission pattern is separated, The present invention relates to an earthquake motion alarm sending method and an operation of a receiving device which end sending of earthquake motion warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, the transmission pattern is defined as the time when the epicenter information and the target area information of both the second earthquake and the first earthquake are all transmitted. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 60 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends while transmitting the target area information of the second earthquake, (6000) to (6004) are processed according to the transmission pattern.

  (6000) Send target area information of the second earthquake. The digital broadcast receiving apparatus receives the target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6001) Send the second source information of the second earthquake. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiving apparatus receives the second source information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6002) Send the first source information of the first earthquake. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiving apparatus receives the first source information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6003) Send out target area information of the first earthquake. The digital broadcast receiving apparatus receives target area information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6004) Send the second source information of the first earthquake. At this time, the total number of seismic motion information is “1”, that is, two earthquakes are transmitted. The digital broadcast receiving apparatus receives the second source information of the first earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6005) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, and the first source information of the first earthquake is transmitted. After (6005), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of ground motion information in the ground motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  So far, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first source information of the second earthquake is transmitted in (6005). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first epicenter information is sent out. After (6005), seismic motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, the time when the source information and the target area information of both the first earthquake and the second earthquake are all transmitted is As a delimiter, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-eighth embodiment according to the present invention will be described.

  This embodiment differs from the twenty-seventh embodiment in the update flag update method. Hereinafter, this will be described with reference to FIG. Although the 27th embodiment is a transmission method in which the update flag is not updated even if the total number of seismic motion information changes, this embodiment will describe a case of a transmission method in which the update flag is updated when the total number of seismic motion information changes. .

  FIG. 92 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 92 is a modification of the update flag update method of FIG. 60 described in the twenty-seventh embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9200) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake is generated. Send it out. After (9200), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  So far, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first point of the epicenter information of the second earthquake is transmitted in (9200). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first epicenter information is sent out. After (9200), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the target area information is sandwiched and transmitted by the corresponding two epicenter information, the transmission pattern is the time when all the source information and the target area information of both the second earthquake and the first earthquake are transmitted. As a delimiter, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A twenty-ninth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when two earthquakes occur and one of them ends, the seismic motion of the completed earthquake is separated by the transmission pattern. The present invention relates to a seismic motion warning sending method and a receiving device operation which finish sending warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, regardless of whether it is the first earthquake or the second earthquake, the transmission pattern is defined as the time when all the epicenter information and target area information related to one earthquake are transmitted. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 61 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the terrestrial digital television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends while sending the source information of the second earthquake, the earthquake motion warning information shown in (6100) and (6101) is sent according to the sending pattern.

  (6100) Send out the epicenter information of the second earthquake. The digital broadcast receiver receives the epicenter information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6101) Send target area information of the second earthquake. The digital broadcast receiving apparatus receives the target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6102) Since the transmission pattern is separated, the total earthquake motion information is changed from “1” to “0” and the source information of the first earthquake is transmitted. (6102) After that, earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake's epicenter information and detects that the total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, one of two earthquakes has ended. To do. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the point that the epicenter information of the second earthquake is transmitted in (6102) is different. Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The epicenter information is sent out. (6102) After that, the earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, all the epicenter information and the target area information related to one earthquake are transmitted regardless of whether the first earthquake or the second earthquake. With the time as the transmission pattern break, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  Embodiment 30 according to the present invention will be described.

  This embodiment is different from the embodiment 29 in the update flag update method. Hereinafter, a description will be given with reference to FIG. Embodiment 29 is a transmission method in which the update flag is not updated even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method in which the update flag is updated when the total number of seismic motion information changes will be described. .

  FIG. 93 shows the earthquake motion warning start / end flag, update flag, page type, total number of earthquake motion information when the earthquake motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 93 is a modification of the update flag update method of FIG. 61 described in the twenty-ninth embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9300) Since the transmission pattern is divided, the total earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the source information of the first earthquake is transmitted. After (9300), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiving apparatus receives the epicenter information of the first earthquake, detects that the update flag is “01” to “10”, that is, the epicenter information is updated, and checks the total number of seismic motion information. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the source information of the second earthquake is transmitted in (9300). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The epicenter information is sent out. After (9300), the seismic motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, all the epicenter information and the target area information related to one earthquake are transmitted regardless of whether the first earthquake or the second earthquake. With the time as the transmission pattern break, the digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A thirty-first embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when two earthquakes occur and one of the earthquakes ends, the transmission pattern is delimited, The present invention relates to an earthquake motion alarm sending method and a receiving device operation for ending the transmission of earthquake motion warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, regardless of the first earthquake and the second earthquake, the time when all the epicenter information and target area information related to one earthquake are transmitted is defined as a transmission pattern delimiter. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 62 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends while sending the source information of the second earthquake, the earthquake motion warning information shown in (6200) to (6202) is sent according to the sending pattern.

  (6200) Send the second source information of the second earthquake. The digital broadcast receiving apparatus receives the second source information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6201) Send the first one of the target area information of the second earthquake. The digital broadcast receiving apparatus receives the first target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6202) Send out the second of the target area information of the second earthquake. The digital broadcast receiving apparatus receives the second target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6203) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, and the first source information of the first earthquake is transmitted. After (6203), the seismic motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of ground motion information in the ground motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first source information of the second earthquake is transmitted in (6203). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (6203), the earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, all the epicenter information and the target area information related to one earthquake are obtained regardless of whether the first earthquake or the second earthquake. With the time of transmission as a transmission pattern delimiter, the digital broadcast receiver can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A thirty-second embodiment according to the present invention will be described.

  This embodiment differs from the 31st embodiment in the update flag update method. Hereinafter, this will be described with reference to FIG. Embodiment 31 is a transmission method that does not update the update flag even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method that updates the update flag when the total number of earthquake motion information changes will be described. .

  FIG. 94 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 94 is a modification of the update flag update method of FIG. 62 described in the thirty-first embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9400) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake is generated. Send it out. After (9400), earthquake motion warning information relating to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  So far, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first point of the epicenter information of the second earthquake is transmitted in (9400). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (9400), seismic motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, all the epicenter information and the target area information related to one earthquake are obtained regardless of whether the first earthquake or the second earthquake. With the time of transmission as a transmission pattern delimiter, the digital broadcast receiver can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  Embodiment 33 according to the present invention will be described.

  In this embodiment, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, when two earthquakes occur and one of them ends, the transmission pattern is separated, The present invention relates to an earthquake motion alarm sending method and an operation of a receiving device which end sending of earthquake motion warning information. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  Here, regardless of the first earthquake and the second earthquake, the time when all the epicenter information and target area information related to one earthquake are transmitted is defined as a transmission pattern delimiter. A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIG. 63 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  Even if the second earthquake ends during transmission of the source information of the second earthquake, the earthquake motion warning information indicated by (6300) and (6301) is transmitted according to the transmission pattern.

  (6300) Send out the target area information of the second earthquake. The digital broadcast receiving apparatus receives the target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6301) Send the second source information of the second earthquake. The digital broadcast receiving apparatus receives the second source information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6302) Since the transmission pattern is divided, the total number of seismic motion information is changed from “1” to “0”, and the first source information of the first earthquake is transmitted. After (6302), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of ground motion information in the ground motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described. However, when the first earthquake ends, the first point of the epicenter information of the second earthquake is transmitted in (6302). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “01”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (6302), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, regardless of whether it is the first earthquake or the second earthquake, all the source information and target area information related to one earthquake are transmitted. By using this time as a transmission pattern delimiter, the digital broadcast receiver can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A thirty-fourth embodiment according to the present invention will be described.

  This embodiment differs from the thirty-third embodiment in the update flag update method. Hereinafter, a description will be given with reference to FIG. Embodiment 33 is a transmission method that does not update the update flag even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method that updates the update flag when the total number of earthquake motion information changes will be described. .

  FIG. 95 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the terrestrial digital television broadcasting system. The example of the transmission of earthquake motion information identification and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 95 shows a modification of the update flag update method of FIG. 63 described in the thirty-third embodiment.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  (9500) Since the transmission pattern is divided, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake is generated. Send it out. After (9500), earthquake motion warning information relating to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended.

  Up to this point, the case where the second earthquake has ended has been described, but when the first earthquake ends, the first point of the epicenter information of the second earthquake is transmitted in (9500). Specifically, the second earthquake in which the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. The first of the epicenter information is sent out. After (9500), earthquake motion warning information related to the second earthquake is transmitted.

  As described above, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, regardless of whether it is the first earthquake or the second earthquake, all the source information and target area information related to one earthquake are transmitted. By using this time as a transmission pattern delimiter, the digital broadcast receiver can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A thirty-fifth embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when two earthquakes occur and one of the earthquakes ends, the earthquake motion warning information of the earthquake that has immediately ended is transmitted. This relates to a method for transmitting an earthquake motion warning and a receiving device operation. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIGS. 64 (a) and 64 (b). In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIGS. 64 (a) and 64 (b) show a seismic motion warning start / end flag in the case of transmitting seismic motion warning information using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The update flag, the page type, the total number of seismic motion information, an example of transmitting seismic motion information identification, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 64 (a) shows the case where the second earthquake has ended during transmission of the earthquake motion warning information related to the second earthquake, and FIG. 64 (b) shows the transmission of earthquake motion warning information related to the second earthquake. Shows the case where the first earthquake ended.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6400) The epicenter information of the second earthquake is transmitted. The digital broadcast receiver receives the epicenter information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6401) Since the second earthquake has ended, the total number of earthquake motion information is changed from “1” to “0”, and the source information of the first earthquake is transmitted. After (6401), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake's epicenter information and detects that the total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, one of two earthquakes has ended. To do. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6403) Send out the second earthquake target area information in which the start / end flag is “00”, the update flag is “01”, and the page type is “0”. (6403) After that, earthquake motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. The digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  Embodiment 36 according to the present invention will be described.

  This embodiment differs from the thirty-fifth embodiment in the update flag update method. Hereinafter, a description will be given with reference to FIGS. 96 (a) and 96 (b). Embodiment 35 is a transmission method that does not update the update flag even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method that updates the update flag when the total number of earthquake motion information changes will be described. .

  96 (a) and 96 (b) show a seismic motion warning start / end flag when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system, The update flag, the page type, the total number of seismic motion information, an example of transmitting seismic motion information identification, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 96 (a) is a modification of the update flag update method of FIG. 64 (a) described in the thirty-fifth embodiment, and FIG. 96 (b) is a diagram of FIG. 64 (b) described in the thirty-fifth embodiment. ) Update flag update method is changed.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9600) Since the second earthquake has ended, the total earthquake motion information total is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the source information of the first earthquake is transmitted. After (9600), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiving apparatus receives the epicenter information of the first earthquake, detects that the update flag is “01” to “10”, that is, the epicenter information is updated, and checks the total number of seismic motion information. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9601) The second earthquake target area information in which the start / end flag is “00”, the update flag is “10”, and the page type is “0” is transmitted. After (9601), earthquake motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. The digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  An embodiment 37 according to the present invention will be described.

  In this embodiment, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when two earthquakes occur and one of them ends, the earthquake motion warning information of the earthquake immediately ended This invention relates to a seismic-motion warning sending method and a receiving device operation for ending the sending of a message. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  A specific example of the transmission method and the receiving apparatus operation in this case will be described with reference to FIGS. 65 (a) and 65 (b). In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  FIGS. 65 (a) and 65 (b) show a seismic motion warning start / end flag in the case of transmitting seismic motion warning information using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The update flag, the page type, the total number of seismic motion information, an example of transmitting seismic motion information identification, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 65 (a) shows the case where the second earthquake has ended during the transmission of the earthquake motion warning information related to the second earthquake, and FIG. 65 (b) shows the transmission of the earthquake motion warning information related to the second earthquake. Shows the case where the first earthquake ended.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6500) Send out the first of the target area information of the second earthquake. The digital broadcast receiving apparatus receives the first target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6501) Since the second earthquake has ended, the total number of earthquake motion information is changed from “1” to “0”, and the source information of the first earthquake is transmitted. After (6501), earthquake motion warning information related to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6502) The second earthquake target area information with the start / end flag set to “00”, the update flag set to “01”, and the page type set to “0” is sent out. After (6502), earthquake motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. Then, the digital broadcast receiving apparatus can be operated by switching the earthquake motion warning response to one earthquake and the earthquake motion warning response to two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  The 38th embodiment according to the present invention will be described.

  This embodiment differs from the thirty-seventh embodiment in the update flag update method. This will be described below with reference to FIGS. 97 (a) and 97 (b). The embodiment 37 is a transmission method that does not update the update flag even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method that updates the update flag when the total number of seismic motion information changes will be described. .

  97 (a) and 97 (b) show a seismic motion warning start / end flag when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system, The update flag, the page type, the total number of seismic motion information, an example of transmitting seismic motion information identification, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 97 (a) shows a modification of the update flag update method of FIG. 65 (a) described in the thirty-seventh embodiment, and FIG. 97 (b) shows FIG. 65 (b) described in the thirty-seventh embodiment. ) Update flag update method is changed.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9700) Since the second earthquake has ended, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake. Is sent out. After (9700), earthquake motion warning information relating to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9701) The second of the second earthquake target area information in which the start / end flag is “00”, the update flag is “10”, and the page type is “0” is transmitted. After (9701), earthquake motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. Then, the digital broadcast receiving apparatus can be operated by switching the earthquake motion warning response to one earthquake and the earthquake motion warning response to two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A 39th embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the target area information is sandwiched between two corresponding epicenter information and transmitted, when two earthquakes occur and one of them ends, the earthquake motion warning information of the earthquake immediately ended The present invention relates to an earthquake motion alarm sending method for terminating sending and the operation of a receiving device. The present invention also relates to a transmission method that does not update the update flag even if the total number of earthquake motion information changes.

  A specific example of the sending method and the receiving apparatus operation in this case will be described with reference to FIGS. 66 (a) and 66 (b). In addition, it is assumed that two earthquakes have occurred, the earthquake motion warning information of the two earthquakes is transmitted, and the digital broadcast receiving apparatus is responding to the earthquake motion warning for the two earthquakes.

  66 (a) and 66 (b) show a seismic motion warning start / end flag when the seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. The update flag, the page type, the total number of seismic motion information, an example of transmitting seismic motion information identification, and details of the operation of the receiving device at that time are shown. The horizontal axis represents time. FIG. 66 (a) shows a case where the second earthquake has ended during transmission of earthquake motion warning information related to the second earthquake, and FIG. 66 (b) shows that earthquake motion warning information related to the second earthquake is being transmitted. Shows the case where the first earthquake ended.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6600) Send target area information of the second earthquake. The digital broadcast receiving apparatus receives the target area information of the second earthquake. Thereafter, a warning screen is generated and output to the video output unit 3001.

  (6601) Since the second earthquake has ended, the total number of ground motion information is changed from “1” to “0”, and the first source information of the first earthquake is transmitted. After (6601), earthquake motion warning information relating to the first earthquake is transmitted.

  The digital broadcast receiver receives the first source information of the first earthquake, and the total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, one of the two earthquakes ends. Detecting that After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (6602) The source of the second earthquake whose start / end flag is “00”, update flag is “01”, page type is “1”, total number of earthquake motion information is “0”, and earthquake motion information identification is “1”. Send the second piece of information. After (6601), earthquake motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the target area information is sandwiched and transmitted by the corresponding two epicenter information, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. The digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A 40th embodiment according to the present invention will be described.

  This embodiment differs from the 39th embodiment in the update flag update method. Hereinafter, a description will be given with reference to FIGS. 98 (a) and 98 (b). The embodiment 39 is a transmission method that does not update the update flag even if the total number of seismic motion information changes, but in this embodiment, a case of a transmission method that updates the update flag when the total number of seismic motion information changes will be described. .

  98 (a) and 98 (b) are obtained by changing the update method of the update flag shown in FIG. 66 described in the embodiment 39. In the digital terrestrial television broadcasting system, the AC included in the segment number # 0 is shown. When transmitting earthquake motion warning information using a signal, shows the start / end flag of the earthquake motion warning, update flag, page type, total number of earthquake motion information, transmission example of earthquake motion information identification, and details of the operation of the receiver at that time It is a thing. The horizontal axis represents time. FIG. 98 (a) is a modification of the update flag update method of FIG. 66 (a) described in the 39th embodiment, and FIG. 98 (b) is the same as FIG. 66 (b) described in the 39th embodiment. ) Update flag update method is changed.

  Since the output method of the warning screen and the display example have been described in the twelfth embodiment, detailed description thereof is omitted here.

  First, a case will be described in which the second earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9800) Since the second earthquake has ended, the total number of earthquake motion information is changed from “1” to “0”, the update flag is changed from “01” to “10”, and the first source information of the first earthquake. Is sent out. After (9800), earthquake motion warning information relating to the first earthquake is transmitted.

  The digital broadcast receiver receives the first earthquake source information of the first earthquake, detects the update flag from “01” to “10”, that is, updates the earthquake source information, and checks the total number of earthquake motion information To do. The total number of earthquake motion information in the earthquake motion warning information is “1” to “0”, that is, it is detected that one of two earthquakes has ended. After the detection, the earthquake motion warning response to the second earthquake is terminated and the earthquake motion warning response to the first earthquake is continued.

  Here, whether the first earthquake or the second earthquake has ended is determined by monitoring the earthquake motion information identification. In this embodiment, the seismic motion information identification is not changed. Therefore, the digital broadcast receiving apparatus detects that the earthquake motion information identification is “0”, and determines that the second earthquake whose earthquake motion information identification is “1” has ended. Further, the receiving apparatus can operate without any problem even if the transmission pattern is lost by deleting the earthquake motion warning information related to the second earthquake from the data judgment storage unit 2506. Erasing can be realized by, for example, a method of overwriting all bits with “0”.

  Next, a case will be described in which the first earthquake ends during transmission of earthquake motion warning information related to the second earthquake.

  (9801) The second earthquake epicenter where the start / end flag is “00”, the update flag is “10”, the page type is “1”, the total number of earthquake motion information is “0”, and the earthquake motion information identification is “1”. Send the second piece of information. After (9801), the ground motion warning information related to the second earthquake is transmitted. In this case, since the transmission pattern is protected, the operation can be performed without any problem even if the earthquake motion warning information related to the first earthquake is not deleted from the data determination storage unit 2506.

  As described above, in the transmission operation in which the target area information is sandwiched and transmitted by the corresponding two epicenter information, when one earthquake ends when two earthquakes occur, the transmission of information regarding the immediately ended earthquake is terminated. The digital broadcast receiving apparatus can be operated by switching between the earthquake motion warning response for one earthquake and the earthquake motion warning response for two earthquakes. Therefore, even if the earthquake motion warning information is reduced from two to one, the digital broadcasting receiver can operate without confusing the earthquake motion warning information of the first earthquake and the earthquake motion warning information of the second earthquake. The viewer can surely ensure safety.

  A forty-first embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when two earthquakes occur and one of them ends, the earthquake motion information identification of the earthquake that has not yet ended The present invention relates to a method for transmitting seismic motion warning information that continues to transmit seismic motion warning information without changing the setting.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 67 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the terrestrial digital television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. 67 is the transmission pattern described in the eighth embodiment.

  (6700) When the first earthquake ends while sending the target area information of the first earthquake, the ground motion information identification of the source information of the second earthquake is sent as “1” in (6701). . That is, even if the first earthquake ends, the seismic motion warning for the second earthquake is sent as the second information.

  Fig. 99 shows the third example in the transmission operation in which the earthquake motion warning information is continuously transmitted without changing the earthquake motion information identification of an earthquake that has not yet been completed when two earthquakes have occurred and one of them has ended. 7 shows an example of transmitting earthquake motion warning information and an example of operation of a receiving apparatus when an earthquake occurs.

  (9900) Since the first earthquake has ended, the total number of seismic motion information is changed from “1” to “0”, and the source information of the second earthquake is transmitted. At this time, the earthquake motion information identification is transmitted with “1”. The digital broadcast receiver only responds to the second earthquake.

  (9901) Since the third earthquake has occurred, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “0” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the third earthquake is the same, but it is determined whether the first earthquake or the third earthquake by checking the ground motion warning identification shown in FIG. can do. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  As mentioned above, when two earthquakes occur, and one of them ends, the digital broadcast receiver will continue to transmit earthquake motion warning information without changing the earthquake motion information identification of the earthquake that has not yet been completed. There is an effect that it is possible to determine whether it is the first earthquake or the second earthquake only by information identification.

  Also, when the third earthquake occurs, even if there is no identification indicating the third information, the third earthquake will be handled as the first information, and the earthquake that has not been completed will be handled as the second information There is an effect that can.

  A forty-second embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when two earthquakes occur and one of them ends, the earthquake motion of the earthquake that has not yet ended The present invention relates to a method for transmitting earthquake motion warning information that continues to transmit earthquake motion warning information without changing information identification.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 68 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. Further, the transmission pattern of the earthquake motion warning information in FIG. 68 is the transmission pattern described in the ninth embodiment.

  (6800) If the first earthquake ends during the transmission of the second target area information of the first earthquake, the ground motion information identification of the source information of the second earthquake is “1” in (6801). Send out as is. That is, even if the first earthquake ends, the seismic motion warning for the second earthquake is sent as the second information.

  Also in the present embodiment, as described in FIG. 99 of the forty-first embodiment, when the first earthquake ends, the total number of earthquake motion information is changed from “1” to “0”, and the source information of the second earthquake. Is sent out. At this time, the earthquake motion information identification is transmitted with “1”. The digital broadcast receiver only responds to the second earthquake.

  When the third earthquake occurs, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “0” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the third earthquake is the same, but it is determined whether the first earthquake or the third earthquake by checking the ground motion warning identification shown in FIG. can do. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  As mentioned above, when two earthquakes occur, and one of them ends, the digital broadcast receiver will continue to transmit earthquake motion warning information without changing the earthquake motion information identification of the earthquake that has not yet been completed. There is an effect that it is possible to determine whether it is the first earthquake or the second earthquake only by information identification.

  Also, when the third earthquake occurs, even if there is no identification indicating the third information, the third earthquake will be handled as the first information, and the earthquake that has not been completed will be handled as the second information There is an effect that can.

  Embodiment 43 according to the present invention will be described.

  In the present embodiment, in the transmission operation in which the target area information is sandwiched and transmitted by the corresponding two epicenter information, two earthquakes occur, and when the first earthquake ends, two earthquakes occur, The present invention relates to a method for transmitting an earthquake motion warning that continues to transmit earthquake motion warning information without changing the seismic motion information identification of an earthquake that has not yet ended when one of the earthquakes is completed.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 69 shows the seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using the AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. 69 is the transmission pattern described in the tenth embodiment.

  (6900) When the first earthquake ends while sending the first earthquake's epicenter information, the seismic motion information identification of the second earthquake's source information is sent as “1” in (6901). That is, even if the first earthquake ends, the seismic motion warning for the second earthquake is sent as the second information.

  Also in the present embodiment, as described in FIG. 99 of the forty-first embodiment, when the first earthquake ends, the total number of earthquake motion information is changed from “1” to “0”, and the source information of the second earthquake. Is sent out. At this time, the earthquake motion information identification is transmitted with “1”. The digital broadcast receiver only responds to the second earthquake.

  When the third earthquake occurs, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “0” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the third earthquake is the same, but it is determined whether the first earthquake or the third earthquake by checking the ground motion warning identification shown in FIG. can do. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  As mentioned above, when two earthquakes occur, and one of them ends, the digital broadcast receiver will continue to transmit earthquake motion warning information without changing the earthquake motion information identification of the earthquake that has not yet been completed. There is an effect that it is possible to determine whether it is the first earthquake or the second earthquake only by information identification.

  Also, when the third earthquake occurs, even if there is no identification indicating the third information, the third earthquake will be handled as the first information, and the earthquake that has not been completed will be handled as the second information There is an effect that can.

  Embodiment 44 according to the present invention will be described.

  In this embodiment, in the transmission operation in which the epicenter information and the target area information are alternately transmitted one by one, when two earthquakes occur and one of them ends, the earthquake motion information identification is reset and the earthquake motion warning information This is related to a method of transmitting an earthquake motion warning that continues to be transmitted.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 70 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. In FIG. 70, the ground motion information identification of the second earthquake source information of FIG. 67 described in the forty-first embodiment is changed from “1” to “0”.

  (7000) If the first earthquake ends while sending the target area information of the first earthquake, the ground motion information identification of the source information of the second earthquake is changed from “1” to “0” in (7001). Send to the transition. That is, when the first earthquake ends, the seismic motion warning for the second earthquake is changed from the second information to the first information and sent.

  At this time, it is possible to determine whether or not the earthquake motion information identification has been reset by checking the earthquake motion warning identification shown in FIG. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  Fig. 100 shows the third operation in the transmission operation in which the earthquake motion information identification of an earthquake that has not yet ended is reset and the earthquake motion warning information is continuously transmitted when two earthquakes occur and one of them ends. An example of transmitting earthquake motion warning information and an operation of a receiving device when an earthquake occurs are shown.

  (10000) Since the first earthquake has ended, the total number of ground motion information is changed from “1” to “0”, the ground motion information identification is changed from “1” to “0”, and the source information of the second earthquake is transmitted. . The digital broadcast receiver only responds to the second earthquake.

  (10001) Since the third earthquake has occurred, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “1” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the second earthquake is the same, but it is determined whether the first earthquake or the second earthquake by checking the ground motion warning identification shown in FIG. can do. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  As described above, when one earthquake ends when two earthquakes occur, the identification indicating the third information does not exist when the third earthquake occurs by resetting the earthquake motion information identification However, there is an effect that an earthquake that has not yet been completed can be handled as the first information and the third earthquake as the second information.

  A 45th embodiment according to the present invention will be described.

  In this embodiment, in the transmission operation in which the combination of the epicenter information and the target area information is alternately transmitted two by two, when two earthquakes occur and one of them ends, the earthquake motion information identification is reset and the earthquake motion The present invention relates to a method for transmitting an earthquake motion alarm that continues to transmit alarm information.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 71 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when transmitting seismic motion warning information using the AC signal included in segment number # 0 in the terrestrial digital television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. In FIG. 71, the ground motion information identification of the source information of the second earthquake in FIG. 68 described in the forty-second embodiment is changed from “1” to “0”.

  (7100) If the first earthquake ends while sending the second target area information of the first earthquake, the ground motion information identification of the source information of the second earthquake is “1” in (7101). To “0” to send. That is, when the first earthquake ends, the seismic motion warning for the second earthquake is changed from the second information to the first information and sent.

  At this time, it is possible to determine whether or not the earthquake motion information identification has been reset by checking the earthquake motion warning identification shown in FIG. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  Also in the present embodiment, as described in FIG. 100 of the forty-fourth embodiment, when the first earthquake ends, the total number of earthquake motion information is “1” to “0”, and the earthquake motion information identification is “1” to “0”. And the source information of the second earthquake is sent. The digital broadcast receiver only responds to the second earthquake.

  When the third earthquake occurs, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “1” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the second earthquake is the same, but by checking the ground motion warning identification, it can be determined whether the first earthquake or the second earthquake. .

  As described above, when one earthquake ends when two earthquakes occur, the identification indicating the third information does not exist when the third earthquake occurs by resetting the earthquake motion information identification However, there is an effect that an earthquake that has not yet been completed can be handled as the first information and the third earthquake as the second information.

Embodiment 46 according to the present invention will be described. This embodiment is for a case where two earthquakes occur and one of them ends in a transmission operation in which target area information is sandwiched between two corresponding epicenter information and transmitted. The present invention relates to a method for transmitting an earthquake motion warning that resets earthquake motion information identification and continues to transmit earthquake motion warning information.

  A specific example of the sending method in this case will be described with reference to FIG. In addition, it is assumed that two earthquakes have occurred and the seismic motion warning information of the two earthquakes is transmitted.

  FIG. 72 shows a seismic motion warning start / end flag, update flag, page type, total number of seismic motion information when seismic motion warning information is transmitted using an AC signal included in segment number # 0 in the digital terrestrial television broadcasting system. This shows an example of transmitting earthquake motion information identification. The horizontal axis represents time. In FIG. 72, the ground motion information identification of the second earthquake source information of FIG. 69 explained in the forty-third embodiment is changed from “1” to “0”.

  (7200) When the first earthquake ends while sending the target area information of the first earthquake, the ground motion information identification of the source information of the second earthquake is changed from “1” to “0” in (7201). Send to the transition. That is, when the first earthquake ends, the seismic motion warning for the second earthquake is changed from the second information to the first information and sent.

  At this time, it is possible to determine whether or not the earthquake motion information identification has been reset by checking the earthquake motion warning identification shown in FIG. The earthquake motion warning identification can be acquired from the epicenter information B58 to B66.

  Also in the present embodiment, as described in FIG. 100 of the forty-fourth embodiment, when the first earthquake ends, the total number of earthquake motion information is “1” to “0”, and the earthquake motion information identification is “1” to “0”. And the source information of the second earthquake is sent. The digital broadcast receiver only responds to the second earthquake.

  When the third earthquake occurs, the total number of earthquake motion information is changed from “0” to “1”, and the source information of the third earthquake whose earthquake motion information identification is “1” is transmitted. The digital broadcast receiving apparatus responds to the second earthquake and the third earthquake.

  At this time, the ground motion information identification of the first earthquake and the second earthquake is the same, but by checking the ground motion warning identification, it can be determined whether the first earthquake or the second earthquake. .

  As described above, when one earthquake ends when two earthquakes occur, the identification indicating the third information does not exist when the third earthquake occurs by resetting the earthquake motion information identification However, there is an effect that an earthquake that has not yet been completed can be handled as the first information and the third earthquake as the second information.

  A 47th embodiment according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the fifth embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  An example of transmitting earthquake motion warning information and an example of operation of the receiving device in this case will be described with reference to FIG.

  FIG. 73 shows a transmission example and an operation example of the receiving apparatus when the earthquake alarm is ended simultaneously with the end report reception of FIG. 33B described in the fifth embodiment.

  (7300) Send the earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the fifth embodiment, when an end report is received when one earthquake or two earthquakes occur, the transmission of the earthquake motion warning information of all earthquakes is immediately terminated, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

  Embodiment 48 according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the sixth embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  An example of transmitting earthquake motion warning information and an example of operation of the receiving apparatus in this case will be described with reference to FIG.

  FIG. 74 shows a transmission example and the operation of the receiving apparatus when the earthquake alarm is ended simultaneously with the end report reception of FIG. 34B described in the sixth embodiment.

  (7400) Sends earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the sixth embodiment, when one earthquake or two earthquakes have occurred and the end report is received, the transmission of the earthquake motion warning information for all earthquakes is immediately terminated, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

  Embodiment 49 according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the seventh embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  An example of the method of transmitting earthquake motion warning information and the receiving device in this case will be described with reference to FIG.

  FIG. 75 shows a transmission example and a receiving device operation in the case where the earthquake motion warning is ended simultaneously with the end report reception of FIG. 35B described in the seventh embodiment.

  (7500) Send earthquake motion warning information with start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the seventh embodiment, when an end report is received when one earthquake or two earthquakes have occurred, the transmission of the earthquake motion warning information for all earthquakes is immediately terminated, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

  Embodiment 50 according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the eighth embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  A specific example of the method of transmitting earthquake motion warning information and the operation of the receiving device in this case will be described with reference to FIG.

  FIG. 76 shows a transmission example and a receiving apparatus operation in the case where the earthquake motion warning is ended simultaneously with the end report reception of FIG. 36C described in the eighth embodiment.

  (7600) Send earthquake motion warning information with start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the eighth embodiment, when an end report is received when one earthquake or two earthquakes occur, the transmission of the earthquake motion warning information of all earthquakes is immediately terminated, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

  Embodiment 51 according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the ninth embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  A specific example of the method of transmitting earthquake motion warning information and the operation of the receiving device in this case will be described with reference to FIG.

  FIG. 77 shows a transmission example and an operation example of the receiving device when the earthquake motion warning is ended simultaneously with the end report reception of FIG. 37 (c) described in the ninth embodiment.

  (7700) Sends earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the ninth embodiment, when one or two earthquakes are generated, when the end report is received, the transmission of the earthquake motion warning information for all earthquakes is immediately ended, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

  Embodiment 52 according to the present invention will be described.

  This embodiment relates to the second end timing in the sending method described in the tenth embodiment. Specifically, when the end report is received, earthquake motion warning information for returning the digital broadcast receiving apparatus to the normal operation is transmitted immediately.

  A specific example of the method of transmitting earthquake motion warning information and the operation of the receiving device in this case will be described with reference to FIG.

  FIG. 78 shows a transmission example and a receiving apparatus operation in the case where the earthquake motion warning is ended simultaneously with the end report reception of FIG. 38C described in the tenth embodiment.

  (7800) Sends earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. . The digital broadcast receiving apparatus has earthquake motion warning information whose start / end flag, update flag, page type, total number of earthquake motion information, and earthquake motion information identification are “11”, “11”, “1”, “1”, “1”, respectively. Is received and transition to normal operation.

  As described above, in the transmission method described in the tenth embodiment, when an end report is received when one earthquake or two earthquakes have occurred, the transmission of the earthquake motion warning information for all earthquakes is immediately terminated, so that The receiving apparatus can be shifted to a normal operation state. Therefore, the receiving device has an effect of quickly presenting to the viewer that the earthquake has ended.

DESCRIPTION OF SYMBOLS 101 ... Antenna 102 ... Channel selection part 103 ... Orthogonal demodulation part 104 ... Fast Fourier transform (FFT) part 105 ... Demodulation decoding part 106 ... Descramble part 107 ... Demax part 108 ... Decoding part 109 ... Video output part 110 ... Audio | voice output part 111 ... Synchronous playback unit 112 ... Frame extraction unit 113 ... TMCC decoding unit 114, 115 ... Switching unit 116 ... AC decoding unit 117 ... Discrimination unit 118 ... Control unit 119 ... Broadcast reception unit 120 ... Earthquake motion warning information reception unit 121 ... Digital broadcast reception Apparatus 201 ... Information source encoding unit 202 ... MPEG2 multiplexing unit 203 ... TS remultiplexing unit 204 ... RS (Reed-Solomon) encoding unit 205 ... Hierarchy division unit 206a, b, c ... Parallel processing unit 207 ... Hierarchy synthesis unit 208 ... Time interleaving unit 209 ... Frequency interleaving unit 210 ... OFDM frame configuration unit 21 ... inverse fast Fourier transform (IFFT) unit 212 ... guard interval addition unit 213 ... transmission unit 214 ... pilot signal configuration unit 215 ... TMCC signal configuration unit 216 ... AC signal configuration units 2501, 2503, 2512 ... input 2502 ... error correction detection unit 2504 ... Clock unit 2505 ... Current time setting unit 2506 ... Data judgment storage unit 2507 ... Comparison judgment unit 2508 ... Buzzer sound generation unit 2509 ... Processing unit 2510 ... Video signal output 2511 ... Audio signal output 2601, 2602 ... Synthesis unit 2701 ... Input 2703 ... Video decoding unit 2704 ... Audio decoding unit 2705 ... Moving picture plane display memory 2706 ... Still picture plane display memory 2707 ... Moving picture still picture switching plane display memory 2708 ... Character graphic plane display memory 2709 ... Subtitles for displaying subtitles Plain display Mori 2710 ... Switching units 2711, 2712, 2714, 2715 ... Adjusting units 2713, 2716 ... Adding unit 2717 ... Data input 2718, 2719 ... Adjusting unit 2720 ... Adding unit 2721725 ... Output 2722, 2723 ... Adjusting unit 2724 ... Adding unit 3901 ... Setting storage unit 3902 ... Prefectural information reception count storage unit 4300 ... Character string 4301 indicating early earthquake early warning ... Character string 4302 indicating that an earthquake will occur ... Character string 4303 calling attention to the viewer ... Earthquake occurrence time 4304 ... Earthquake motion Announcement date and time of warning information 4400 ... Grace time 4500 ... Expected arrival time of earthquake 4600 ... Map 4601 ... Emphasis display 4602 indicating target area ... Epicenter 8000 ... Character string 8001 indicating emergency earthquake early warning of the first earthquake ... Character string 820 indicating emergency earthquake warning for the second earthquake 0 ... First earthquake occurrence time 8201 ... Second earthquake occurrence time 8300 ... First earthquake postponement time 8301 ... Second earthquake postponement time 8500 ... First earthquake target area 8501 ... Second earthquake target area 8502 ... Both first and second earthquake target areas 8503 ... First earthquake epicenter 8504 ... Second earthquake epicenter

Claims (2)

Digital broadcast reception for receiving a transmission signal having a digital broadcast signal including a broadcast video signal or a broadcast audio signal, and an earthquake motion warning information signal including information configured by alternately repeating region information and source information of the earthquake motion warning A device,
A receiver for receiving the transmission signal;
A seismic motion warning information demodulating unit that demodulates the seismic motion warning information signal from the transmission signal received by the receiving unit;
When receiving the earthquake motion warning information signal regarding two earthquakes at the receiving unit,
A determination unit that obtains local information and source information of each of the two earthquakes from the earthquake motion warning information signal demodulated by the earthquake motion warning information demodulation unit, generates a video signal related to the earthquake motion, and outputs the video signal ,
The discriminating unit regenerates and outputs a video signal at the timing of acquiring the epicenter information of the second earthquake or the timing of acquiring the regional information of the second earthquake. Receiver device. Digital broadcast reception for receiving a transmission signal having a digital broadcast signal including a broadcast video signal or a broadcast audio signal, and an earthquake motion warning information signal including information configured by alternately repeating region information and source information of the earthquake motion warning A method,
A receiving step for receiving the transmission signal;
A seismic motion warning information demodulating step for demodulating the seismic motion warning information signal from the transmission signal received in the receiving step;
When receiving the earthquake motion warning information signal regarding two earthquakes in the receiving step,
A determination step of obtaining local information and source information of earthquake motion warnings for each of the two earthquakes from the earthquake motion warning information signal demodulated in the step of demodulating the earthquake motion warning information, and generating and outputting a video signal relating to the earthquake motion, and ,
In the determining step, the digital signal is regenerated and output at the timing of acquiring the source information of the second earthquake or the timing of acquiring the regional information of the second earthquake. Reception method.

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