WO2013124900A1 - Appareil émetteur, appareil récepteur et procédé d'émission/réception - Google Patents

Appareil émetteur, appareil récepteur et procédé d'émission/réception Download PDF

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Publication number
WO2013124900A1
WO2013124900A1 PCT/JP2012/001261 JP2012001261W WO2013124900A1 WO 2013124900 A1 WO2013124900 A1 WO 2013124900A1 JP 2012001261 W JP2012001261 W JP 2012001261W WO 2013124900 A1 WO2013124900 A1 WO 2013124900A1
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WO
WIPO (PCT)
Prior art keywords
segment
information
content
unit
program
Prior art date
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PCT/JP2012/001261
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English (en)
Japanese (ja)
Inventor
正樹 若林
崇 豊村
城杉　孝敏
村上　真一
小畑　信一
Original Assignee
日立コンシューマエレクトロニクス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to PCT/JP2012/001261 priority Critical patent/WO2013124900A1/fr
Publication of WO2013124900A1 publication Critical patent/WO2013124900A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/845—Structuring of content, e.g. decomposing content into time segments
    • H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments

Definitions

  • a transmission device that transmits content and metadata of the content includes a transmission unit that transmits the content and metadata of the content.
  • the metadata transmitted from the transmission unit includes a plurality of pieces of program content information corresponding to the elapsed playback time of the content transmitted from the transmission unit.
  • the digital broadcast receiving apparatus of the present invention In the reception and reproduction operation of the digital broadcast receiving apparatus of the present invention, it is an example of a metadata description method using program content information according to reproduction elapsed time as a constituent element. It is an example of the program content information according to the elapsed playback time presented when the content to be played back is selected in the receiving and playing operation of the digital broadcast receiving apparatus of the present invention. It is an example of the program content information according to reproduction elapsed time presented after selecting the content to reproduce in the reception reproduction operation of the digital broadcast receiving apparatus of the present invention.
  • FIG. 1 is a block diagram showing a system configuration of digital broadcast distribution in Embodiment 1 according to the present invention.
  • 101 is a content transmission device
  • 102 is a data transmission device for loss compensation
  • 103 is a license management device
  • 104 is a payment system / customer management system
  • 105 is a removable medium
  • 106 is a reception device
  • 107 is a storage device
  • 108 is metadata transmission Device.
  • Content to be distributed and metadata storing information related to the content are stored in the storage device 107 and registered in the content transmission device 101 for distribution.
  • the registered content and metadata are transmitted from the content transmitting apparatus 101 via broadcast waves together with access control common information and access control individual information.
  • the metadata may be transmitted from the metadata transmission apparatus 108 via communication as well as via broadcast waves.
  • Information relating to whether or not viewing is possible is managed by the license management apparatus 103 and the settlement system / customer management system 104, and access control common information and access control individual information are supplied to the content transmission apparatus 101.
  • the access control common information and the access control individual information may be distributed not only from the content transmission apparatus 101 via broadcast waves but also from the license management apparatus 103 via communication.
  • the access control common information and the access control individual information may be stored in the removable medium 105 and delivered directly to the user or sold through a store.
  • the deficiency complementing data sending device 102 has a function of sending data for repairing a deficiency when there is a deficiency in the content distributed by the broadcast wave when the receiving device 106 receives the content.
  • the missing complement data sending device 102 sends the missing complement data via communication in accordance with the missing complement data request from the receiving device 106. After the reception of the missing complement data is completed, the receiving device 106 transmits a reception report to the missing complement data sending device.
  • the content transmission device 101, the defect complement data transmission device 102, the license management device 103, the payment system / customer management system 104, the storage device 107, and the metadata transmission device 108 are all described as separate devices. There may be a device having a plurality of functions, and the present invention is not limited to the configuration of FIG.
  • Real-time broadcasting is a streaming-type distribution, and is a service for reproducing the content at the same time as receiving a broadcast wave.
  • pushcast broadcasting is download-type distribution and is a service that is played back at an arbitrary timing after receiving a broadcast wave.
  • the content transmission apparatus 101 transmits all content, metadata, access control common information, and access control individual information via broadcast waves.
  • the content transmission apparatus 101 acquires the access control common information and the access control individual information from the license management apparatus 103 in advance in order to transmit the access control common information and the access control individual information.
  • the receiving apparatus 106 separates / extracts content, metadata, access control common information, and access control individual information from the broadcast wave, and decodes the content using the acquired access control common information and access control individual information.
  • the access control individual information may be distributed from the license management apparatus 103 via the network or the removable media 105 from the viewpoint of effective use of the broadcast band.
  • the receiving apparatus 106 needs to obtain the access control individual information in advance before receiving the content.
  • the content sending apparatus 101 sends all content, metadata, access control common information, and access control individual information via broadcast waves.
  • the content transmission apparatus 101 acquires the access control common information and the access control individual information from the license management apparatus 103 in advance in order to transmit the access control common information and the access control individual information.
  • the receiving apparatus 106 separates / extracts content, metadata, access control common information, and access control individual information from the broadcast wave, and decodes the content using the acquired access control common information and access control individual information.
  • the metadata may be distributed from the metadata transmission device 108 via a network.
  • the access control common information and the access control individual information may be distributed from the license management apparatus 103 via a network or via the removable medium 105.
  • the receiving device 106 needs to obtain the access control individual information via the network or the removable medium 105 by the time of content reproduction.
  • the content transmission apparatus 101 may repeatedly transmit specific content multiple times in a certain time zone.
  • the content stored in the receiving device 106 may be repaired by sending data for defect complementation. If the receiving device 106 determines that the accumulated content is missing, the receiving device 106 transmits a missing complement data request to the missing complement data sending device 102 via the network. In response to the missing complement data request, the missing complement data sending device 102 sends the missing complement data to the receiving device 106 via the network. The receiving device 106 receives the missing complement data and attempts to repair the accumulated content, and transmits a reception report to the missing complement data sending device 102 via the network.
  • FIG. 2 is a block diagram showing a detailed configuration inside the content transmission apparatus 101.
  • a plurality of MPEG-2 transport streams (hereinafter referred to as TS) are each subjected to transmission path coding processing, and then subjected to a plurality of IFFTs (Inverse / Fast / Fourier / Transform). It is converted into an OFDM (Orthogonal Frequency Division Multiplexing) transmission signal consisting of subcarriers in a batch and transmitted as a broadcast wave.
  • TS MPEG-2 transport streams
  • IFFTs Inverse / Fast / Fourier / Transform
  • FIG. 3 is a block diagram showing a detailed configuration inside the multimedia signal generation 201.
  • 301 is a content / metadata registration function
  • 302 is a metadata generation function
  • 303 is a metadata storage function
  • 304 is a content storage / playback function
  • 305 is a content encryption function
  • 306 is a recording medium.
  • the content and metadata supplied from the outside of the content transmission apparatus 101 are registered by the content / metadata registration function 301.
  • the registered content and metadata are stored in the recording medium 306 by the content storage / playback function 304 and the metadata storage function 303, respectively.
  • Metadata relating to content transmission and license is generated by the metadata generation function 302 and stored in the recording medium 306 by the metadata storage function 303.
  • the stored content and metadata are encrypted by the content encryption function 305 and output as a stream.
  • This digital broadcast transmission signal is based on the segment-coupled transmission method among terrestrial multimedia broadcasts performed by broadcast stations using radio waves (VHF-High band) with a frequency of 207.5 MHz to 222 MHz. This is based on the transmission system of terrestrial digital television broadcasting and the transmission system of terrestrial digital audio broadcasting.
  • VHF-High band radio waves
  • the transmission spectrum of each super segment is arranged in any one physical channel.
  • the frequency position of the physical channel may be defined by overlapping some bands. In this case, the frequency bandwidth of the overlapping portion is an integral multiple of 6/14 MHz.
  • sub-channels are defined as shown in FIG. 5 for the frequencies in the physical channel.
  • the sub-channel is a virtual channel with a bandwidth of 1/7 MHz, and the physical channel bandwidth of 6 MHz is numbered from 0 to 41 for each tuning step 1/7 MHz.
  • FIG. 5 shows an example of the relationship between subchannel numbers and segments.
  • FIG. 5 shows an example of one segment of the center subchannel number 22.
  • the subchannels 21, 22, and 23 constitute one segment.
  • subchannel numbers 0, 1, and 41 are arranged across physical channels.
  • the center frequency that is the channel selection frequency for Super Segment 1 and center subchannel number 28 is 208 MHz.
  • the center frequency that is the channel selection frequency of super segment 1 and center subchannel number 31 is (208 + 3/7) MHz.
  • the center frequency that is the tuning frequency of super segment 1 and center subchannel number 34 is (208 + 6/7) MHz.
  • the center frequency, which is the channel selection frequency for super segment 1 and center subchannel number 37, is (209 + 2/7) MHz.
  • the center frequency that is the channel selection frequency of Super Segment 1 and center subchannel number 40 is (209 + 5/7) MHz.
  • the center frequency, which is the channel selection frequency of super segment 2 and center subchannel number 1, is (210 + 1/7) MHz
  • the center frequency that is the channel selection frequency of super segment 3 and center subchannel number 22 is (213 + 1/7) MHz
  • the center frequency, which is the channel selection frequency of super segment 4 and center subchannel number 1, is (216 + 1/7) MHz
  • the center frequency, which is the channel selection frequency for super segment 1 and center subchannel number 22, is (210 + 4/7) MHz.
  • the center frequency, which is the channel selection frequency of super segment 2 and center subchannel number 1, is (213 + 4/7) MHz.
  • the center frequency, which is the tuning frequency of super segment 2 and center subchannel number 4 is 214 MHz.
  • the center frequency, which is the channel selection frequency for super segment 2 and center subchannel number 7, is (214 + 3/7) MHz.
  • the center frequency that is the channel selection frequency for super segment 2 and center subchannel number 10 is (214 + 6/7) MHz.
  • the center frequency, which is the channel selection frequency of super segment 2 and center subchannel number 13, is (215 + 2/7) MHz.
  • the center frequency which is the channel selection frequency of super segment 2 and center subchannel number 16, is (215 + 5/7) MHz.
  • the center frequency that is the channel selection frequency of super segment 2 and center subchannel number 19 is (216 + 1/7) MHz,
  • the center frequency that is the channel selection frequency of super segment 3 and center subchannel number 22 is (219 + 1/7) MHz, It becomes.
  • the current VHF physical channels 10, 11, and 12 are used, and therefore, there is an effect that the channel selection unit of the current television receiver is good.
  • the 13-segment format is arranged at both ends of the allocated band, there is an effect that it is difficult to receive interference because of the frequency interleaving effect even if it receives interference from outside the allocated band.
  • 201 is a multimedia signal generation unit
  • 202 is a 13 segment format encoding unit
  • 203 is a 3 segment format encoding unit
  • 204 is a concatenated frame configuration unit
  • 205 is a reconnection frame configuration unit
  • 206 is an inverse fast Fourier transform (hereinafter, IFFT) / guard interval adding unit
  • 207 is an up-converter unit
  • 208 is a transmission amplifier unit
  • 209 is an antenna.
  • 701 is an input from the previous stage
  • 702 is a pilot signal configuration unit
  • 703 is a TMCC (Transmission and Multiplexing Configuration and Control) signal configuration unit
  • 704 is an AC (Auxiliary Channel) signal configuration unit
  • 705 is an OFDM frame configuration unit
  • 706 is an output is there.
  • the video signal, the audio signal, and the data are each encoded, and a TS to be output to each 13 segment format encoding unit 202 or 1 segment format encoding unit 203 is generated.
  • a TMCC (Transmission-and-Multiplexing-Configuration-Control) signal is transmitted using a specific carrier as control information for smoothly performing the operation.
  • an AC (Auxiliary Channel) signal which is an extension signal for transmitting additional information related to transmission control of modulated waves assigned to a specific carrier and earthquake motion warning information, is used.
  • Super segment 5 13 segments of type A (1 13 segments) are 202 b [TS9] is assigned to the block and output to the reconnection frame configuration unit 205.
  • Super segment 1 13 segments of type A (1 13 segments) are allocated to the block 202a [TS1] and output to the reconnection frame configuration unit 205.
  • [] Is the TS number input to each of the 13-segment format encoding unit 202 and the 1-segment format encoding unit 203.
  • the subchannel and TS number can be associated with each other.
  • the differential demodulation standard is 1 bit and specifies the amplitude and phase standards.
  • the synchronization signal consists of a 16-bit word.
  • the synchronization signal is used to establish synchronization of the TMCC signal and OFDM frame synchronization.
  • 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 partial reception flag is set to ‘1’ when the segment (segment No. 0) at the center of the transmission band is set for partial reception in the 13-segment format, and is set to ‘0’ otherwise.
  • segment No. 0 is set for partial reception
  • the layer is defined as layer A in FIG.
  • the flag is set to “0”. This is consistent with the fact that the terrestrial digital audio system uses this flag as a format identification flag, which is ‘0’ for the 1-segment format and ‘1’ for the 3-segment format. If there is no next information, the flag is set to ‘1’.
  • TMCC information B20 to B121 is error-correction-encoded 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.
  • 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.
  • Pushcast broadcast 1601 is a service in which non-time-dependent file-type content is automatically downloaded. For example, electronic newspapers, music, sports clips, news clips, shopping, lifestyle information, gourmet magazines, cooking information, languages, dramas, movies, etc. can be considered. In addition, a menu linked to an information address (in FIG. 16, described as WEB) that can search for various types of information can be considered.
  • the feature of pushcast broadcasting is that content can be distributed in advance and viewed at a time convenient for the user.
  • FIG. 17 is an explanatory diagram showing an example of a segment configuration of a digital broadcast transmission signal transmitted by the digital broadcast transmission apparatus of the present invention.
  • FIG. 17 shows the segment configuration example described with reference to FIG. 4.
  • 1701 is a pilot segment
  • 1702 is a pilot segment.
  • Super segment 2 One program of real-time broadcast 1603 is assigned to type B (one segment one) in one segment format, and TS7 is made premium.
  • Super segment 1 Mixed broadcast 1602 is assigned to type A (one 13 segment) and TS1.
  • Super segment 2 Type B (seven segments) type 6 (real-time broadcasting 1603) and pilot broadcasting 1604 as pilot segments are allocated to each segment format.
  • TS2 is news
  • TS3 is weather
  • TS4 is shopping
  • TS5 is pilot broadcast 1604
  • TS6 is sport
  • TS7 is education
  • TS8 is premium.
  • pilot broadcasts such as program advertisements can be performed in addition to the pilot segment.
  • FIG. 18 (b) is such that the TS number is sent as program information instead of the super segment number, super segment type, physical channel, and subchannel of FIG. 18 (a).
  • the TS number can be represented by a super segment number, a super segment type, and a subchannel, and the center frequency can be determined by the start frequency of the physical channel and the center subchannel number.
  • this TS information is transmitted as pilot information.
  • the pilot information shown in FIG. 18 is sent, even if the super segment configuration changes from a certain date and time, the program information setting from a certain date and time can be changed to follow the contents of the change in the super segment configuration. For example, there is an effect that the receiver side can receive without being aware of the change of the super segment configuration. However, the position (frequency arrangement) of the pilot segment should not be changed.
  • 1916 is a rewritable nonvolatile memory (hereinafter referred to as NVRAM), 1917 is a ROM such as a font (Read Only Memory), 1918 is a main memory RAM (Random Access Memory), and 1919 is a communication line interface (hereinafter I / F).
  • 1920 is an input / output unit (hereinafter referred to as I / O)
  • 1921 is a system bus
  • 1922 is a central processing unit (hereinafter referred to as CPU)
  • 1923 is a remote controller
  • 1930 is a CAS (Conditional Access System) that manages license information
  • 1927 is a removable medium.
  • a digital broadcast transmission signal input to the digital broadcast receiving device 1926 by the antenna 1901 is converted into a TS (transport stream) by the F / E unit.
  • the demodulated TS is input to the descramble 1 unit 1928, but is not decoded here. Subsequently, only the data related to the content to be stored is separated and stored in the recording medium 1931 by the input demax unit 1909.
  • data related to the content to be reproduced is read from the recording medium 1931 and input to the descrambling 2 unit 1929 and encrypted using the access control common information and the access control individual information stored in the recording medium 1931.
  • Decode data selectively.
  • the decoded TS is separated into video, audio, and other data by the demax unit 1909, and the video stream is output to the video decoding unit 1912 and the audio stream is output to the audio decoding unit 1910.
  • the decoded video signal forms a display screen by the presentation processing unit 1913 and is output by the video output 1914.
  • the decoded audio signal is output as an audio output 1911.
  • the operation of the digital broadcast receiving apparatus can be performed with the remote controller 1923 via the I / O 1920.
  • Fig. 20 shows the types of digital broadcast receivers.
  • Bit deinterleaving is performed by the interleaving units 2105a, b, and c
  • depuncturing is performed by the depuncturing units 2106a, b, and c
  • synthesis is performed by the layer synthesizing unit 2122
  • Viterbi decoding is performed by the Viterbi decoding unit 2107
  • each layer is divided by the layer dividing unit 2121.
  • Byte deinterleaving and energy in the interleaving unit 2108 -Despreading unit 2109 performs energy despreading
  • TS playback unit 2110 performs TS playback
  • RS decoding unit 2111 performs error correction
  • a digital broadcast signal is demodulated.
  • transport defined in MPEG2 Systems A stream (TS) signal is output to the descramble 1 unit 1928 and the demax unit 1909.
  • the system in the case of receiving a signal in 1 segment format and in the case of receiving in 13 segment format, the system is identified by the system identification shown in FIG. 11 of the TMCC signal decoded by the TMCC decoding unit 1908, and the terrestrial digital audio
  • a 1-segment format is received
  • a 13-segment format is received (mainly handling the partial reception flag shown in FIG. 13).
  • the layer division 2121 and 2123 do not perform layer division, but perform processing using, for example, a system block. Since no hierarchical division is performed, hierarchical synthesis in the hierarchical synthesis 2122 is not necessary.
  • processing may be performed using only the system a as in the case of the one segment format, or may be divided into three layers and one of them may be processed as a partial reception layer. .
  • the channel frequency band of the channel selection 1902 may be extracted as one segment.
  • the channel frequency band to be received by the channel selection unit 1902 from the digital broadcast transmission signal received by the antenna 1901 in this case, the frequency band for one segment is extracted, and the channel-selected signal is orthogonally demodulated by the orthogonal demodulation unit 1903.
  • a band signal is converted into frequency axis processing by an FFT unit 1904, and FFT is performed for a period corresponding to an effective symbol among 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.
  • the TMCC decoding unit 1908 is always operating when trying to receive an emergency alert broadcast, and monitors the emergency alert broadcast activation flag shown in FIG.
  • the channel selection unit 1902, the quadrature demodulation unit 1903, the FFT unit 1904, the synchronous reproduction unit 1906, and the frame extraction unit 1907 are always operating.
  • the operations of the channel selection unit 1902, the orthogonal demodulation unit 1903, the FFT unit 1904, the synchronous reproduction unit 1906, and the frame extraction unit 1907 are segment No. 0 in the case of the 13 segment format, that is, only the partial reception portion when receiving an emergency warning broadcast. It is only necessary to perform the process. Thereby, it can be set as a low power consumption operation
  • step 2303 the TS is demodulated by the F / E unit 1924, the pilot information of FIG. 18 is extracted by the descrambling unit 1928 and the demax unit 1909, and is decoded by the system decoding unit 1915.
  • FIG. 24 shows an example of the service tuning table. They are organized by operator identification, broadcast type, date / time, and program type, and a channel selection frequency and a super segment type are assigned to each content of a real-time broadcast program or pushcast broadcast.
  • the channel selection frequency is the center frequency of the center subchannel.
  • the super segment type is type A (13 segment format), it is indicated whether or not the program or content is in the partial reception layer (" ⁇ ": partial reception layer, "x": layer other than partial reception). .
  • step 2901 the reception operation is started.
  • the CPU 1922 controls each block via the system bus 1921.
  • step 2906 first, real-time broadcasting, pushcast broadcasting, and downloaded are selected.
  • step 2905b a pushcast service table is displayed.
  • FIG. 32 is an explanatory diagram showing an example of a segment configuration of a digital broadcast transmission signal transmitted by the digital broadcast transmission apparatus of the present invention.
  • FIG. 27 shows the segment configuration example described in FIG. 4B, where 3201 is a pilot segment of the broadcast service group 3101, 3202 is a pilot segment of the broadcast service group 3103, and 3203 is a pilot segment of the broadcast service group 3102.
  • the pilot segment is a segment for transmitting a pilot broadcast, and is a 1-segment format segment or a 13-segment format partial reception segment.
  • the pilot segment 3201 of the broadcast service group 3101 is a 13-segment partial reception segment of [super segment 1, center subchannel number 22], the center frequency is (210 + 4/7) MHz
  • the pilot segment 3202 of the service group 3103 is a segment of [super segment 2, center subchannel number 10], the center frequency is (214 + 6/7) MHz
  • the pilot segment 3203 of the broadcast service group 3102 is [super segment 3,
  • the partial reception segment of the 13-segment format of the center subchannel number 22] the center frequency is (219 + 1/7) MHz. This frequency arrangement is determined at this position in the example of FIG.
  • FIG. 33 is a configuration example of program information which is an example of pilot information transmitted by pilot broadcasting. 18 differs from FIG. 18 in that the program information is divided into (1) super segment 1 information, (2) super segment 2 information, and (3) super segment 3 information, and broadcast information in each super segment is divided into each super segment. It is to be transmitted by pilot broadcasting.
  • a receiving apparatus capable of receiving in the 13-segment format receives a super segment 1 or a super segment 3 type A super segment, and one segment connected in units of super segments.
  • a receiving apparatus capable of receiving a format has an effect of selecting a program only in the super segment received by using the pilot broadcast in the super segment by collectively receiving the super segment 2.
  • pilot broadcasting (pilot segment) is arranged in the type A (13 segment format) partial reception layer, pilot broadcasting (pilot segment) of the type A super segment service group even in a 1 segment format receiver. Can be received.
  • a receiving apparatus capable of receiving in the 13-segment format receives a super segment 1 or a super segment 3 type A super segment, and one segment connected in units of super segments.
  • a receiving apparatus capable of receiving a format has an effect of selecting a program only in the super segment received by using the pilot broadcast in the super segment by collectively receiving the super segment 2.
  • step 3702 the digital broadcast receiving apparatus 1926 confirms whether the version information of the pilot information is available.
  • the pilot version number of the pilot version information of the TS transmission system information is updated more than the pilot version number of the version information of the pilot information in step 3703, the pilot information is updated, so the service channel selection table needs to be updated. After step 2302, the service tuning table is updated.
  • Super segment 2 One program of real-time broadcast 1603 is assigned to type B (one segment one) in one segment format, and TS7 is made premium.
  • Super segment 5 Mixed broadcast 1602 is assigned to type A (one 13 segment), and TS9 is set.
  • Super segment 3 Mixed broadcast 1602 is assigned to type A (one 13 segment), and TS9 is set.
  • the broadcasting at the TS level is made the same in the cases of FIGS. 38 (a) and 38 (b).
  • This allocation is performed by the multimedia signal generator 201 in FIG.
  • one type B super segment of one segment type is used as a pilot segment
  • one of the seven type B super segments connected in one segment type is pilot. It is a segment. Therefore, the example of FIG. 38 (a) is suitable when processing is performed in units of super segments, and the example of FIG. 38 (b) is suitable when processing is performed in units of TS.
  • FIG. 40 (a) shows the physical channel information, super segment information, and TS information of FIG. 38 (a) and FIG. 40 (b).
  • the pilot segment is a segment for transmitting a pilot broadcast.
  • it is a segment of one segment format.
  • the segment is [Super segment 1, center subchannel number 1].
  • information on transmission services in each super segment is gathered in each super segment, and information summarizing information on transmission services in each of the plurality of super segments is equivalent to pilot information.
  • the information can be stored in the pilot segment, and the processing framework for the conventional digital broadcasting can be used as the processing after selecting and specifying the super segment.
  • step 2315 program information being transmitted (and program information to be subsequently transmitted) in the super segment (SS) in which real-time broadcasting is being streamed is acquired.
  • step 2316 a reception target program in the super segment (SS) is selected and processed.
  • step 2308 the program is output.
  • step 2310 a download reservation is made. If it is time to download, the channel selection unit 1902 in step 2311 uses the reserved content from the channel selection table of FIG. 24 as the channel selection frequency, and if it is transmitted by type A other than partial reception, the channel frequency band is set to 13 segments. The 13-segment format demodulation is performed. The channel frequency band is set to one segment band in the case of transmission by partial reception in type A and in the case of type B, partial reception demodulation in the case of partial reception, and one segment format demodulation in the case of type B.
  • step 2321 program information being transmitted (and program information to be subsequently transmitted) in the super segment (SS) in which real-time broadcasting is being streamed is acquired.
  • step 2322 a recording target program in the super segment (SS) is selected and processed.
  • step 2323 a recording process is executed.
  • FIG. 50 shows an example of a metadata description method that includes program content information by elapsed playback time as a component, and this metadata is transmitted by the metadata transmission device 4108.
  • XML eXtensibleXMarkup Language
  • the detailed content display screen 5201 includes a thumbnail image 5202, a program title 5203, an elapsed playback time 5204, program content information 5205 by elapsed playback time, and a jump playback button 5206.
  • the thumbnail image 5202, the program title 5203, and the elapsed playback time 5204 are the same as those shown in FIG.
  • the program content information 5205 by reproduction elapsed time is presented based on the data defined in FIG. For example, when the watched time of the content indicated by the elapsed playback time 5204 is 20 minutes, the portion that has already been viewed among the four playback elapsed time program content information defined in FIG. 48B and FIG. (1) and (2) including are valid, and are presented as program content information 5205 by reproduction elapsed time. At this time, only the program content information 5205 (2) by playback elapsed time including the current playback elapsed time may be presented, or all the items that have been valid in the past, that is, both (1) and (2) are displayed. May be presented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La technique classique révèle que le côté émission transmet divers types d'informations sur une base segment par segment et le côté réception sélectionne et démodule l'un quelconque des segments. Toutefois, la technique antérieure ne révèle rien concernant une association d'informations inter-segments dans laquelle le côté émission associe et transmet divers types d'informations sur une base segments multiples par segments multiples et le côté récepteur sélectionne et démodule des segments en fonction de l'association. De plus, la technique classique ne se réfère pas à l'obtention d'un service utilisant efficacement des métadonnées dans un système pour l'exécution d'une distribution de contenus préconditionnée en fonction de l'association d'informations. Un appareil émetteur destiné à transmettre des contenus et les métadonnées de ces contenus comprend une unité d'émission pour la transmission des contenu et des métadonnées de ces contenus, et est caractérisé en ce que les métadonnées devant être transmises à partir de l'unité d'émission comprennent une pluralité d'éléments d'informations de contenus de programme qui sont en accord avec des délais écoulés de reproduction des contenus à transmettre à partir de l'unité d'émission.
PCT/JP2012/001261 2012-02-24 2012-02-24 Appareil émetteur, appareil récepteur et procédé d'émission/réception WO2013124900A1 (fr)

Priority Applications (1)

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PCT/JP2012/001261 WO2013124900A1 (fr) 2012-02-24 2012-02-24 Appareil émetteur, appareil récepteur et procédé d'émission/réception

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2012/001261 WO2013124900A1 (fr) 2012-02-24 2012-02-24 Appareil émetteur, appareil récepteur et procédé d'émission/réception

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WO2013124900A1 true WO2013124900A1 (fr) 2013-08-29

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015070333A (ja) * 2013-09-26 2015-04-13 日本放送協会 送信装置、受信装置及びチップ
CN111711851A (zh) * 2015-07-24 2020-09-25 麦克赛尔株式会社 广播接收装置和接收装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10304321A (ja) * 1997-04-24 1998-11-13 Nippon Hoso Kyokai <Nhk> テレビジョン放送システムおよびテレビジョン放送システム用受信装置
JP2002320163A (ja) * 2001-04-20 2002-10-31 Sharp Corp メタ情報と映像時間位置情報を利用した映像視聴装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10304321A (ja) * 1997-04-24 1998-11-13 Nippon Hoso Kyokai <Nhk> テレビジョン放送システムおよびテレビジョン放送システム用受信装置
JP2002320163A (ja) * 2001-04-20 2002-10-31 Sharp Corp メタ情報と映像時間位置情報を利用した映像視聴装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015070333A (ja) * 2013-09-26 2015-04-13 日本放送協会 送信装置、受信装置及びチップ
CN111711851A (zh) * 2015-07-24 2020-09-25 麦克赛尔株式会社 广播接收装置和接收装置
CN111711851B (zh) * 2015-07-24 2022-11-22 麦克赛尔株式会社 广播接收装置和接收装置

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