KR101181776B1 - method for transmitting and receiving emergency warning information and apparatus for receiving emergency warning information - Google Patents

Abstract

The present invention provides a method for transmitting and receiving disaster information and an apparatus for receiving disaster information. In one aspect, the present invention provides a method comprising the steps of: receiving a broadcast signal; Obtaining dedicated channel information on disaster information included in a channel information frame for transmitting fast channel information from the received broadcast signal; And expressing dedicated channel information on the obtained disaster information to a user. According to the present invention, the disaster information receiving apparatus according to the present invention can quickly and specifically deliver disaster information to a user.

Disaster, EWS, FIC, broadcast, channel, emergency

Description

Method for transmitting and receiving emergency warning information and apparatus for receiving emergency warning information}

1 is a diagram illustrating an example of a signal frame structure of digital broadcasting in which disaster information can be transmitted.

2 is a view showing an example of a broadcast signal frame that can be transmitted by the disaster information transmission and reception method according to the present invention

3 is a diagram illustrating an embodiment of a format in which disaster information is transmitted and a method for transmitting and receiving disaster information according to the present invention;

4 is a diagram illustrating another embodiment of a method in which disaster information can be transmitted and a method for transmitting and receiving disaster information according to the present invention;

5 is a view showing an embodiment of an apparatus for receiving disaster information according to the present invention

<Description of the code of the main part of drawing>

10: broadcast receiver 20: broadcast demodulator

30: signal decoder 31: FIC decoder

32: MSC decoder 33: EWS decoder

40: memory section 50: channel control section

60: broadcast signal processor 70: data service processor

80: channel switching input unit 82: video processor

85: display unit 90: audio processor

95: speaker

The present invention provides a disaster information transmission and reception method and a disaster information reception apparatus, and more specifically, a disaster information transmission and reception method and a disaster information reception apparatus capable of quickly and specifically delivering disaster information to a user.

As digital broadcasting has become practical, a method of delivering various information to users as well as multimedia contents has been considered. Methods and transmission protocols that inform users of disaster information using digital broadcasting are being considered and supplemented.

The disaster information receiving apparatus may receive disaster information from a broadcast signal according to a digital broadcast transmission protocol, and may display the disaster information according to the transmission protocol. In the following description, a disaster information receiving apparatus generally includes a broadcast receiving device as well as a dedicated terminal for receiving disaster information.

Since the disaster information is to inform the user about the type or risk of the disaster, the specific information on the disaster information should be informed to the user. However, if the user simply informs the user of the disaster information in the form of a message, there is a problem in that the user cannot deliver the relief information about the disaster information.

In addition, the delivery of disaster information in the form of a message has a problem that a user cannot quickly obtain disaster information and cannot fully recognize the danger of a disaster.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a disaster information transmitting and receiving method and a disaster information receiving apparatus capable of delivering disaster information to a user in detail.

Another object of the present invention is to provide a method for transmitting and receiving disaster information and an apparatus for receiving disaster information, which can quickly deliver disaster information to a user.

Receiving a broadcast signal to achieve the object; Obtaining dedicated channel information on disaster information included in a channel information frame for transmitting fast channel information from the received broadcast signal; Expressing dedicated channel information on the obtained disaster information to a user; And switching to the dedicated channel according to a user's selection.

The channel information frame for delivering the fast channel information may be included in a fast information channel (FIC).

The dedicated channel information includes an ensemble identifier, a service identifier, a service component identifier in a service, an ensemble identifier of a dedicated channel, and a dedicated channel in a message format for transmitting disaster information. can do.

The dedicated channel information may be set to a user recource locator (URL) including an ensemble identifier, a service identifier, and a service component identifier in a field for transmitting disaster information.

In another aspect, the present invention includes the steps of generating dedicated channel information for the disaster information; Forming broadcast data in which dedicated channel information on the generated disaster information is inserted into a frame for transmitting fast channel information of a broadcast signal; And transmitting the formed broadcast data.

In another aspect, the present invention provides a broadcast receiver for receiving a broadcast signal including dedicated channel information for disaster information; A broadcast demodulator for demodulating the broadcast signal received by the broadcast receiver; A signal decoding unit for decoding the demodulated broadcast signal to obtain dedicated channel information for disaster information; A broadcast signal processor configured to display dedicated channel information among information decoded by the signal decoder; A channel switching input unit for outputting a channel switching control command according to a channel switching signal of a user; And a channel control unit configured to receive the broadcast signal of the dedicated channel according to a control command output by the channel switching input unit when receiving the dedicated channel information of the disaster information from the signal decoding unit. Provide a receiving device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

1 illustrates an example of a signal frame structure of digital broadcasting in which disaster information can be transmitted. There may be various ways to deliver disaster information using a broadcast signal. However, the example of FIG. 1 will be described using an example of a broadcast standard based on Eureka-147 of digital audio broadcasting (DAB).

The frame of the broadcast signal may have an ensemble structure. One ensemble may include one or more services, and a service may have one or more service components.

1 illustrates an example in which a service included in an ensemble is an ALPHA 1 radio, a BETA radio, and an ALPHA 2 radio.

The ALPHA 1 radio service includes service components of audio, alpha radio traffic information (ALPHA 1 radio), and alpha radio system information.

In addition, the BETA radio service includes a service component of audio and second audio, and the ALPHA 2 radio service includes an example of a service component of alpha radio traffic information, alpha radio system information, and audio.

In FIG. 1, the service components may be multiplexed and transmitted to subchannels a, b, c, d, ..., and the broadcast data according to each subchannel is in accordance with the main service channel (MSC) protocol of the DAB. Can be sent.

The broadcast signal according to the DAB system may be multiplexed into a fast information channel (FIC) and a synchronization channel for signal synchronization so that the MSC and the broadcast receiving apparatus can quickly access channel information from the transmitted broadcast signal. .

2 is a view showing an example of a broadcast signal frame that can be transmitted by the disaster information transmission and reception method according to the present invention. FIG. 2 illustrates a data field structure of extension 2 of type 5 of a fast information group (FIG) included in an FIC in a DAB.

The fast information channel (FIC) may include a plurality of fast information blocks (FIBs), and each FIB data field may have a plurality of FIG (fast information groups).

FIG. 2 may have a different data field structure depending on the type. The example of FIG. 2 shows a type 5 data field among FIG types.

The FIG header may have a 3-bit field for identifying the type, and a 5-bit field for indicating the length of the FIG data type in bytes.

The D1 field is currently a reserved area. If the value of the D2 field is 0, control information may be transmitted in a type 5 field, and in the case of 1, a message may be transmitted in a type 5 field.

Currently, if the D2 field is 0, the type 5 field is padded with 0 and transmitted. The TCId field can be used to distinguish eight different service components that can be transmitted using the same extension number.

When the value of the extension field in type 5 of FIG is 2, disaster information may be transmitted in the type 5 field.

Emergency warning systems having such a transmission rule are transmitted to the FIC because they are sent out faster than other transmission information and information needs to be obtained from the receiving apparatus.

FIG. 3 is a diagram for describing a format in which disaster information is transmitted when the type 5 extension field of FIG. 2 and a method for transmitting and receiving disaster information according to the present invention are as follows.

An embodiment of the method for transmitting and receiving disaster information according to the present invention may add and transmit channel information for quickly and accurately delivering current disaster information to a message field for transmitting disaster information.

Hereinafter, a channel through which disaster related matters are transmitted is called a disaster information dedicated channel. The position on the broadcast data of the dedicated channel is referred to as dedicated channel position information.

First, the message field to which disaster information is transmitted includes the type of disaster (3 bytes), the time of disaster occurrence (28 bits), the type of disaster area (3 bits), the reserved for future additions (1 bit), and the disaster. Each field may include an area number (4 bits), a disaster area length (4 bits), a disaster area (variable length), a short sentence (variable length), and a cyclic redundancy checking (CRC) 16 bits.

Here, the type of disaster may include information about the type of disaster, such as heavy rain alarm, heavy rain warning.

The disaster announcement time indicates the time when disaster information is issued, and the disaster area format is inserted with a value defined by the country designation code.

The number of disaster areas indicates the number of areas where disaster information is issued, the disaster area length indicates the code length of the disaster area, and the disaster area indicates the area where the disaster information is issued. The short message transmits specific information on what kind of disaster has occurred, and the CRC is inserted for error correction when decoding the disaster information.

An embodiment of the method for transmitting and receiving disaster information according to the present invention may insert and transmit information on a dedicated channel in a message including the above-mentioned disaster information, or may receive the transmitted broadcast signal.

The information on the dedicated channel includes an unspecified area (Rfa) (1 bit), an ensemble identifier flag (EId flag), a service identifier flag (SId flag), a service component identifier (SCIds) in a service, and a dedicated channel. The ensemble identifier (EId) of the channel and the dedicated channel may include a service identifier (SId).

The EId flag in the dedicated channel location information field into which the above information is inserted indicates whether an ensemble field other than the currently decoded ensemble is present and may be used when the dedicated channel exists in another ensemble.

The SId flag may indicate whether a service identifier field (SId field) is 16 bits or 32 bits.

SCIds represents service component identifier information in a service field.

When the value of the EId flag field is 0, the EId field indicates that there is a dedicated channel for disaster information in the same ensemble to which the current dedicated channel information is transmitted. Therefore, if there is a dedicated channel in the same ensemble, it is not necessary to transmit any additional ensemble information, so the EId field may not be allocated (EI 0bits).

If the value of the EId flag field is 1, this indicates that there is a dedicated channel for disaster information in another ensemble. In this case, the EId field may include dedicated channel identifier information (EId 16 bits).

The SId field indicates a service identifier of a transport channel, and 16 bits or 32 bits may be allocated according to a value of the SId flag to indicate from which service a dedicated channel is transmitted.

4 illustrates another form in which disaster information may be transmitted when the type 5 extension field of FIG. 2 is different, and another embodiment of a method for transmitting and receiving disaster information according to the present invention is as follows.

FIG. 4 illustrates that dedicated channel location information for disaster information may be inserted as a uniform resource locator (URL) in information that can be input without a separate field of a message.

In the case where the dedicated channel location information of the disaster information is inserted into the URL, the location information of the dedicated channel may be represented as follows.

 dab: // <ECC> <EId>. <SId>. <SCIdS>

Here, <ECC> represents a standard country code, <EId> represents an ensemble identifier, <SId> represents service identifier information, and <SCIdS> represents service component information may be inserted.

In the example of FIG. 4, the dedicated channel position information on the disaster information indicates a case of inserting into a message (when the D2 field is 1) among the type 5 data fields. However, the dedicated channel position information is not limited to the position of the illustrated broadcast data and may be inserted into any data field.

As illustrated in FIG. 3 or 4, the broadcast transmitter may set dedicated channel position information, insert the set information into a broadcast data format, and transmit the same.

A device capable of receiving disaster information may decode the above-described information and change the channel of the disaster information receiving apparatus to a channel transmitting the disaster information when the disaster information is transmitted.

The broadcast transmitter may generate dedicated channel information on the disaster information, and form and transmit broadcast data in which the dedicated channel information on the generated disaster information is inserted into a frame for transmitting fast channel information of the broadcast signal.

5 is a block diagram illustrating an embodiment of an apparatus for receiving disaster information according to the present invention. Referring to Figure 5 describes the operation of an embodiment of the disaster information receiving apparatus according to the present invention. FIG. 5 illustrates an embodiment of an apparatus for receiving disaster information capable of expressing digital multimedia broadcasting.

The disaster information receiving apparatus according to the present invention includes a broadcast receiver 10, a broadcast demodulator 20, a signal decoder 30, a memory 40, a channel controller 50, a broadcast signal processor 60, and a data service. The processor 70 and the channel switching input unit 80 may be included.

The broadcast receiver 10 may receive a broadcast signal according to digital broadcasting. Digital broadcasting includes terrestrial digital multimedia broadcasting and satellite digital multimedia broadcasting.

The broadcast demodulator 20 may demodulate the received digital broadcast signal according to a modulation scheme. For example, a terrestrial digital multimedia broadcasting system modulates and transmits a signal using an orthogonal frequency division multiplexing (OFDM) scheme. In this case, the broadcast demodulator 20 may demodulate the broadcast signal in the reverse order of the OFDM modulation scheme.

The signal decoding unit 30 may decode the demodulated broadcast signal according to the protocol of the broadcast signal. The signal decoder 30 may include an FIC decoder 31 that decodes FIC, which is fast channel information, and an EWS decoder 32 that decodes disaster information from the FIC. The signal decoder 30 may output and store the MCI (Multiplex Configuration Information) including the information related to the service from the FIC to the memory 40.

In addition, the signal decoding unit 30 may include an MSC decoding unit 33 for decoding an MSC including broadcast service data, and the MSC decoding unit 33 performs data and video / audio broadcasting included in the data service. The broadcast signal may be separated and output.

When the signal decoder 30 decodes and outputs the MSC, the broadcast signal processor 60 that processes video / audio broadcast processes audio data included in the CIF (common interleaved frame) of the decoded MSC to implement audio broadcasting. Or, the multimedia broadcast can be displayed.

The signal decoding unit 30 may decode the disaster information included in the FIC and the transmission period information for the disaster information. The visual disaster information among the decoded disaster information may be displayed on the display 82 through the video processor 80, and the auditory disaster information may be displayed on the audio processor 95 via the audio processor 90.

Meanwhile, the signal decoder 30 may decode the dedicated channel information on the disaster information included in the FIC and transmit the dedicated channel information to the channel controller 50.

When the user transmits a channel switching command to the channel switching input unit 80 to the dedicated channel to switch the dedicated channel for the disaster information, the channel controller 50 receives the switching command and the broadcast receiver 10 switches to the dedicated channel. The broadcast signal can be tuned as much as possible.

Thus, the user can quickly and accurately obtain disaster information through a dedicated channel.

It is easy for a person skilled in the art to change or modify the present invention from the present specification. Although an embodiment of the present invention has been described above clearly, various modifications thereof should be made without departing from the spirit and the scope of the present invention.

The effects of the disaster information receiving apparatus according to the present invention described above are as follows. According to the disaster information receiving apparatus according to the present invention can quickly and specifically deliver the disaster information to the user.

Claims (9)

A broadcast receiver configured to receive a broadcast signal including dedicated channel information about disaster information; A broadcast demodulator for demodulating the broadcast signal received by the broadcast receiver; A signal decoding unit which decodes the demodulated broadcast signal to obtain dedicated channel information on disaster information; And A channel controller for allowing the broadcast receiver to receive a broadcast signal of a dedicated channel according to the dedicated channel information; / RTI &gt; In this case, the dedicated channel information is received in the form of a message for transmitting the disaster information receiving an disaster information, characterized in that it includes an ensemble identifier (service symbol), a service identifier (service identifier), the ensemble identifier of the dedicated channel and the service identifier of the dedicated channel Device. The method of claim 1, The dedicated channel information is disaster information receiving apparatus, characterized in that included in the fast information channel (FIC). A broadcast receiver configured to receive a broadcast signal including dedicated channel information about disaster information; A broadcast demodulator for demodulating the broadcast signal received by the broadcast receiver; A signal decoding unit which decodes the demodulated broadcast signal to obtain dedicated channel information on disaster information; And A channel controller for allowing the broadcast receiver to receive a broadcast signal of a dedicated channel according to the dedicated channel information; / RTI &gt; Wherein the dedicated channel information is set to a user recource locator (URL) including an ensemble identifier, a service identifier, and a service component identifier in a field for transmitting the disaster information. Generating dedicated channel information for the disaster information; Inserting dedicated channel information on the generated disaster information into a frame for transmitting fast channel information of a broadcast signal to form broadcast data; And Transmitting the formed broadcast data; / RTI &gt; The dedicated channel information may include an ensemble identifier, a service identifier, an ensemble identifier of a dedicated channel, and a service identifier of a dedicated channel in a message format for transmitting disaster information. Way. The method of claim 4, wherein The dedicated channel information is transmitted in a fast information channel (FIC) characterized in that the disaster information transmission method. Generating dedicated channel information for the disaster information; Inserting dedicated channel information on the generated disaster information into a frame for transmitting fast channel information of a broadcast signal to form broadcast data; And Transmitting the formed broadcast data; / RTI &gt; Wherein the dedicated channel information is set to a user recource locator (URL) including an ensemble identifier, a service identifier, and a service component identifier in a field for transmitting the disaster information. delete delete delete

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