WO2017154646A1 - 送信装置、送信方法、受信装置および受信方法 - Google Patents
送信装置、送信方法、受信装置および受信方法 Download PDFInfo
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- WO2017154646A1 WO2017154646A1 PCT/JP2017/007572 JP2017007572W WO2017154646A1 WO 2017154646 A1 WO2017154646 A1 WO 2017154646A1 JP 2017007572 W JP2017007572 W JP 2017007572W WO 2017154646 A1 WO2017154646 A1 WO 2017154646A1
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Definitions
- the present technology relates to a transmission device, a transmission method, a reception device, and a reception method, and more particularly to a transmission device that inserts predetermined information into a media encoded stream such as video and audio and transmits the encoded information.
- Patent Document 1 discloses that predetermined information is inserted into an audio compressed data stream from a broadcasting station, a distribution server, and the like, and the set-top box on the receiving side directly transmits the audio compressed data stream via an HDMI digital interface. It has been proposed that the information is transmitted to the television receiver and the television receiver performs information processing using the predetermined information.
- An object of the present technology is to allow a predetermined information to be inserted into a media encoded stream and transmitted.
- the concept of this technology is An information insertion unit that sequentially inserts each divided part obtained by dividing predetermined information into a predetermined number of unit parts of a media encoded stream, with the addition of order information for reconstruction; A transmission unit for transmitting a container of a predetermined format including the media encoded stream in which the predetermined information is inserted; The information insertion part The transmission apparatus divides the predetermined information so that the bit rate of the predetermined information falls within the predetermined bit rate.
- the information insertion unit sequentially inserts each divided portion obtained by dividing predetermined information into a predetermined number of unit portions of the media encoded stream. Order information for reconstruction is added to each divided portion.
- the predetermined information is divided so that the bit rate of the predetermined information falls within the predetermined bit rate.
- the container of the predetermined format containing the media coding stream in which the predetermined information was inserted is transmitted by the transmission unit.
- the information insertion unit may divide the predetermined information so that the data size of each divided part is a fixed size.
- the information insertion unit calculates the fixed size by dividing the allowable bit rate obtained by subtracting the bit rate of the media encoded stream from the target bit rate by the number of unit parts generated in one second. It may be made like.
- the information insertion unit may divide the predetermined information so that the data size of each unit part into which the divided part is inserted is a fixed size.
- the information insertion unit obtains the first size obtained by dividing the allowable bit rate obtained by subtracting the bit rate of the media encoded stream from the target bit rate by the number of unit parts generated in one second.
- the fixed size may be calculated by adding the second size obtained by dividing the bit rate of the media encoded stream by the number of unit parts generated in one second.
- it may be transmitted as identification information so that the receiver side can recognize the target bit rate and the bit rate ratio with respect to the media encoding of the data to be inserted.
- each divided portion obtained by dividing predetermined information so that the bit rate is within the predetermined bit rate is inserted into a predetermined number of unit portions of the media encoded stream and transmitted. Therefore, the entire bit rate including the media encoded stream can be suppressed to the target bit rate, and it is possible to satisfactorily perform transmission by inserting predetermined information into the media encoded stream.
- the information insertion unit converts each divided part obtained by dividing the predetermined information into a predetermined number of unit parts of one or more media encoded streams, and the order information for reconstruction.
- Identification for identifying whether or not each of the divided parts to be inserted and sequentially inserted and inserted into a predetermined number of unit parts of one or more media coded streams has insertion of the divided parts into other media coded streams Information may be added.
- the container further includes an identification information insertion unit that inserts identification information indicating that there is an insertion of a divided portion of the predetermined information corresponding to each of the one or more media encoded streams. May be.
- the reception side can easily identify the media encoded stream in which the divided portion of the predetermined information is inserted.
- the identification information insertion unit determines whether there is another media encoded stream in which a divided portion of predetermined information is inserted corresponding to each of the one or more media encoded streams in the container. When the identification information to be indicated and another media encoded stream are present, the identification information indicating the other media encoded stream may be further inserted.
- An information insertion unit for sequentially inserting each divided part obtained by dividing predetermined information into a predetermined number of unit parts of one or more media encoded streams, with the addition of order information for reconstruction;
- the transmission apparatus includes a transmission unit that transmits a container of a predetermined format including the one or more media encoded streams into which the divided portion of the predetermined information is inserted.
- each divided portion obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit portions of one or more media encoded streams. Order information for reconstruction is added to each divided portion.
- the transmission unit transmits a container of a predetermined format including one or more media encoded streams into which a divided portion of the predetermined information is inserted.
- each divided portion obtained by dividing predetermined information into a predetermined number of unit portions of one or more media encoded streams is inserted and transmitted. Therefore, it is possible to reduce the time required for transmitting the entire predetermined information by transmitting using many media encoded streams.
- the information insertion unit includes identification information for identifying whether each divided portion inserted into one or more media encoded streams has insertion of a divided portion into the other media stream. You may be made to add. In this case, the reception side can easily recognize that there is an insertion of a divided portion into another media encoded stream based on the identification information added to each divided portion, and all the divided portions of the predetermined information can be recognized. Removal can be performed efficiently.
- the container further includes an identification information insertion unit that inserts identification information indicating that a divided portion of predetermined information is inserted corresponding to each of one or more media encoded streams. , May be.
- the reception side can easily identify the media encoded stream in which the divided portion of the predetermined information is inserted.
- the identification information insertion unit indicates whether there is another media encoded stream in which a divided portion of the predetermined information is inserted corresponding to each of the one or more media encoded streams in the container.
- identification information indicating the other media encoded stream may be further inserted.
- a stream receiver for receiving one or more media encoded streams; Each divided part obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit parts of the one or more media encoded streams, with order information for reconstruction being added, Processing for extracting each divided portion of the predetermined information from the predetermined number of unit portions of the one or more media encoded streams, reconstructing the predetermined information based on the order information, and the reconstructed predetermined information
- the receiving apparatus further includes a control unit that controls information processing using the.
- one or more media encoded streams are received by the receiving unit.
- the stream reception unit may receive one or more media encoded streams from an external device via a digital interface.
- Each division portion of the predetermined information is extracted from a predetermined number of unit portions of one or more media encoded streams, and the predetermined information is reconstructed based on the order information. Then, information processing using the reconfigured predetermined information is performed.
- identification information for identifying whether or not a divided portion is inserted into another media encoded stream is added to a divided portion inserted in a predetermined number of unit portions of one or more media encoded streams.
- each divided portion of the predetermined information may be extracted from a predetermined number of unit portions of one or more media encoded streams based on the identification information.
- each divided portion of the predetermined information is extracted from a predetermined number of unit portions of one or more media encoded streams, reconfigured based on the order information, and the reconfigured predetermined information is used. Information processing is performed. Therefore, the predetermined information can be appropriately reconstructed, and information processing can be performed satisfactorily.
- a receiving unit for receiving a container of a predetermined format including one or more media encoded streams; Each division part obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit parts of the one or more media coded streams with order information for reconstruction added, In the container, identification information indicating that there is an insertion of a divided portion of the predetermined information corresponding to each of the one or more media encoded streams is inserted,
- the reception apparatus further includes a transmission unit that transmits the one or more media encoded streams having the insertion of a divided portion of the predetermined information based on the identification information to the external device via a digital interface.
- the receiving unit receives a container of a predetermined format including one or more media encoded streams.
- Each divided portion obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit portions of one or more media encoded streams with order information for reconstruction.
- identification information indicating that there is an insertion of a divided portion of predetermined information is inserted into the container corresponding to each of the one or more media encoded streams.
- the transmission unit transmits one or more media encoded streams with the insertion of a divided portion of the predetermined information to the external device via the digital interface.
- one or more media encoded streams including the insertion of the divided portion of the predetermined information are transmitted to the external device via the digital interface. is there. Therefore, in the external device, it is possible to extract all the divided portions of the predetermined information from one or more media encoded streams and reconfigure and use the predetermined information.
- time_information time information
- time_information time information
- time_information time information
- time_information time information
- time_information time information
- descriptor data container descriptor
- descriptor data container descriptor
- FIG. 1 It is a figure which shows the example in case several container object data are transmitted by several generic data (generic_data). It is a figure which shows the example in which execution of several container object data is managed independently of the audio player PTS based on the time information added to it. It is a figure which shows that execution of the container object data (predetermined information) in the receiving side can be performed independently of an audio time stamp. It is a figure which shows the specific example by which several container object data are synchronously managed based on the time information added to it. It is a figure which shows the structural example of transport stream TS. It is a block diagram which shows the structural example of a set top box. It is a block diagram which shows the structural example of a television receiver.
- FIG. 1 It is a block diagram which shows the other structural example of the stream production
- FIG. 1 shows a configuration example of a transmission / reception system 10 as an embodiment.
- the transmission / reception system 10 includes a broadcast transmission device 100, a set top box (STB) 200, and a television receiver (TV) 300.
- the set top box 200 and the television receiver 300 are connected via an HDMI cable 400.
- the set top box 200 is the source and the television receiver 300 is the destination.
- HDMI is a registered trademark.
- the broadcast transmission apparatus 100 transmits an MPEG-2 transport stream (hereinafter simply referred to as “transport stream TS”) as a container (multiplexed stream) on a broadcast wave.
- transport stream TS includes a video stream and an audio stream as media encoded streams.
- the broadcast sending device 100 divides each divided part obtained by dividing predetermined information into one or more media encoded streams, in this embodiment, a predetermined number of unit parts of one or more audio streams, The sequence information for reconstruction is added and inserted sequentially.
- the predetermined number includes one.
- the predetermined information is not actually divided and the whole is inserted into one unit portion.
- the predetermined information is network access information, command information, media files, and the like.
- the unit part is, for example, an access unit.
- This access unit means an audio frame obtained by bundling a predetermined number of audio sample data when the media encoded stream is an audio stream, and means a picture when the media encoded stream is a video stream.
- the broadcast transmission apparatus 100 divides the predetermined information so that the bit rate of the predetermined information is within the predetermined bit rate. By dividing in this way, the entire bit rate including the media encoded stream can be suppressed to the target bit rate, and it is possible to perform transmission by inserting predetermined information into the media encoded stream.
- the predetermined information is divided so that the data size of each divided portion is a fixed size.
- the fixed size is calculated by dividing the allowable bit rate obtained by subtracting the bit rate of the media encoded stream from the target bit rate by the number of unit parts generated in one second.
- the predetermined information is divided so that the data size of each unit part into which the divided part is inserted is a fixed size.
- the data size of each divided portion varies.
- the fixed size is calculated by adding the second size obtained by dividing the bit rate of the stream by the number of unit parts generated in one second.
- the broadcast transmission apparatus 100 identifies whether each divided part inserted into a predetermined number of unit parts of one or more media encoded streams has insertion of a divided part into another media encoded stream. Is added.
- the reception side can easily recognize that there is an insertion of a divided portion into another media encoded stream based on the identification information added to each divided portion, and all the divided portions of the predetermined information can be recognized. Removal can be performed efficiently.
- the broadcast transmission apparatus 100 inserts identification information indicating that there is an insertion of a divided portion of predetermined information, corresponding to each of one or more media encoded streams, into the transport stream TS as a container.
- identification information indicating that there is an insertion of a divided portion of predetermined information, corresponding to each of one or more media encoded streams, into the transport stream TS as a container.
- the broadcast transmission apparatus 100 includes another media encoded stream in which a divided portion of predetermined information is inserted corresponding to each of one or more media encoded streams in the transport stream TS as a container.
- the identification information indicating the other media encoded stream is inserted.
- the set-top box 200 receives the transport stream TS transmitted from the broadcast transmission device 100 on a broadcast wave.
- the transport stream TS includes a media encoded stream (video stream, audio stream).
- each divided portion obtained by dividing predetermined information into a predetermined number of unit portions of one or more audio streams is sequentially inserted with order information for reconstruction. Has been.
- the set-top box 200 transmits the received one or more audio streams themselves together with the uncompressed video data obtained by decoding the received video stream via the HDMI cable 400 to the television receiver 300. Send to.
- identification information indicating that there is an insertion of a divided portion of predetermined information is inserted into the transport stream TS corresponding to each of one or more audio streams.
- the set top box 200 transmits all of the one or more audio streams having the insertion of the divided portion of the predetermined information to the television receiver 300. Even when the television receiver 300 has only a partial decoding capability of one or more audio streams, the set-top box 200 inserts not only the partial audio streams but also a divided portion of predetermined information. All of the one or more audio streams are transmitted to the television receiver 300. As a result, the television receiver 300 can extract all of the divided portions of the predetermined information from one or more media encoded streams and reconfigure and use the predetermined information.
- the television receiver 300 receives, from the set top box 200 via the HDMI cable 400, one or more audio streams including uncompressed video data and insertion of divided portions of predetermined information.
- the television receiver 300 displays an image based on uncompressed video data.
- the television receiver 300 performs decoding processing on all or part of one or more audio streams according to the decoding capability to obtain uncompressed audio data, and outputs the sound corresponding thereto.
- the television receiver 300 takes out a divided portion of the predetermined information from one or more audio streams, and reconstructs the predetermined information based on the order information. Then, the television receiver 300 performs information processing using the reconstructed predetermined information, for example, processing for acquiring media data by media access information, displaying an image using the media data, outputting audio, and the like.
- FIG. 2 shows a configuration example of the stream generation unit 110A included in the broadcast transmission apparatus 100.
- this stream generation unit 110A one audio stream is generated, and each divided portion obtained by dividing predetermined information (inserted data) is inserted into the predetermined number of audio frames.
- the stream generation unit 110A includes a CPU 111, a video encoder 112, an audio encoder 113, a splitter 114, an inserter 115, and a multiplexer 116.
- the splitter 114 and the inserter 115 may be included as part of the audio encoder 113 or the CPU 111.
- the CPU 111 controls each unit of the stream generation unit 110A.
- the video encoder 112 receives MPEG2, H.264, video data (image data) SV. H.264 / AVC, H.H. Encoding such as H.265 / HEVC is performed to generate a video stream (video elementary stream).
- the video data SV is, for example, video data reproduced from a recording medium such as a hard disk (HDD) or live video data obtained by a video camera.
- the audio encoder 113 encodes the audio data (sound data) SA with the MPEG-H 3D Audio compression format to generate an audio stream (audio elementary stream).
- the audio data SA corresponds to the video data SV described above, and is audio data reproduced from a recording medium such as an HDD or live audio data obtained with a microphone.
- the splitter 114 divides the insertion data DT constituting the predetermined information to obtain a predetermined number of divided portions f (i).
- the inserter 115 sequentially inserts a predetermined number of divided portions obtained by the division by the splitter 114 into the predetermined number of audio frames of the audio stream, with the addition of order information for reconstruction.
- the order information includes, for example, information such as the first divided part, the last divided part, and what number divided part.
- the splitter 114 divides the inserted data DT so that the bit rate is within a predetermined bit rate, here, an allowable bit rate.
- the splitter 114 divides the insertion data DT by, for example, the following method (1) or (2).
- the insertion data DT is divided so that the data size of each divided portion is a fixed size.
- the insertion data DT is divided so that the data size of the audio frame in which each divided portion is inserted becomes a fixed size.
- the allowable bit rate AVR may be calculated by designating a ratio with the bit rate of the audio encoded stream, or the allowable bit rate AVR itself may be designated.
- the flowchart of FIG. 3 shows an example of a processing procedure for determining the size of each divided part to be inserted into a predetermined number of audio frames when dividing by the method (1).
- the splitter 114 starts processing in step ST1.
- the splitter 114 determines whether or not the remaining size N of the insertion data DT is equal to or smaller than ISS (i).
- the first of the remaining size N coincides with the size N_Origin of the insertion data DT.
- the splitter 114 sets the size of the divided portion f (i) to be inserted into the i-th audio frame as ISS (i) in step ST5.
- the process proceeds to the process of determining the size of (i).
- step ST4 when N is ISS (i) or less, the splitter 114 sets the size of the divided part f (i) to be inserted into the i-th audio frame to N in step ST8. After the process in step ST8, the splitter 114 ends the process in step ST9.
- FIG. 4 shows an example of division of the insertion data DT when divided by the method (1), and transition of the size of each audio frame when each divided portion f (i) is inserted into the corresponding audio frame of the audio stream.
- An example is shown.
- the insertion data DT is divided into six divided parts f0, f1, f2, f3, f4, and f5, which are divided into audio frames A0, A1, A2, A3, A4, and A5 of the audio stream. Has been inserted.
- the data size of each audio frame after insertion directly reflects the change in the data size of each audio frame before insertion.
- “ACS” indicates the data size obtained by dividing the bit rate CR of the audio stream by the number AU_frec of audio frames generated in one second, that is, the average data size of each audio frame of the audio stream. ing.
- the splitter 114 calculates the second size ACS by dividing the bit rate CR of the audio stream by the number AU_frec of audio frames generated in one second according to the following equation (2). This second size indicates the average data size of each audio frame of the audio stream. Then, the splitter 114 adds the first size AIS and the second size ACS to calculate a fixed size.
- ACS CR / 8 / AU_frec (2)
- FIG. 5 shows an example of a processing procedure for determining the size of each divided part to be inserted into a predetermined number of audio frames when dividing by the method (2).
- AU (i) is the data size of the i-th audio frame into which the divided portion of the insertion data DT is inserted.
- step ST14 the splitter 114 determines whether or not ISS (i) is larger than the number of bytes (HDB) corresponding to the header header of the syntax shown in FIG.
- ISS (i) is equal to or less than HDB
- the splitter 114 sets the size of the divided portion f (i) to be inserted into the i-th audio frame to 0 in step ST15.
- the splitter 114 determines whether or not the remaining size N of the insertion data DT is equal to or smaller than ISS (i) in step ST17.
- the first of the remaining size N coincides with the size N_Origin of the insertion data DT.
- the splitter 114 sets the size of the divided portion f (i) to be inserted into the i-th audio frame as ISS (i) in step ST18.
- the process proceeds to the process of determining the size of (i).
- step ST17 when N is equal to or smaller than ISS (i), the splitter 114 sets the size of the divided portion f (i) to be inserted into the i-th audio frame to N in step ST20. After the process in step ST20, the splitter 114 ends the process in step ST21.
- FIG. 6 shows an example of the division of the insertion data DT when divided by the method (2), and the transition of the size of each audio frame when each divided portion f (i) is inserted into the corresponding audio frame of the audio stream.
- An example is shown.
- the insertion data DT is divided into six divided parts f0, f1, f2, f3, f4, and f5, which are divided into audio frames A0, A1, A2, A3, A4, and A5 of the audio stream. Has been inserted.
- the data size of each audio frame after insertion is a constant data size except for the audio frame into which the last divided portion of the insertion data DT is inserted, regardless of the variation in the data size of each audio frame before insertion. It becomes.
- the audio frame into which the last divided portion of the insertion data DT is inserted has a constant data size of (ACS + AIS).
- FIG. 7 shows an example of the structure of an audio frame in MPEG-H 3D Audio transmission data.
- This audio frame is composed of a plurality of MPEG audio stream packets (mpeg
- Each MPEG audio stream packet is composed of a header and a payload.
- the header has information such as packet type (Packet type), packet label (Packet type Label), and packet length (Packet type Length).
- Information defined by the packet type of the header is arranged in the payload.
- the payload information includes “SYNC” corresponding to the synchronization start code, “Frame” that is actual data of 3D audio transmission data, and “Config” indicating the configuration of this “Frame”.
- “Frame” includes channel encoded data and object encoded data constituting 3D audio transmission data.
- the channel encoded data is composed of encoded sample data such as SCE (Single Channel Element), CPE (Channel Pair Element), and LFE (Low Frequency Element).
- the object encoded data is composed of SCE (Single Channel Element) encoded sample data and metadata for rendering it by mapping it to a speaker located at an arbitrary position. This metadata is included as an extension element (Ext_element).
- “Metadata” is designated by the packet type (Packet Type), and the packet has a division portion of predetermined information.
- Generic data (generic_data) is newly defined.
- FIG. 8 shows the type of packet identified by the value of the packet type (Packet Type).
- FILDATA is defined as “0”, “MPEGH3DACFG” as “1”, “MPEGH3DAFRAME” as “2”, “SYNC” as “6”, and the like.
- MEADATA can be defined as “128”.
- the format of the metadata packet is, for example, arranged using an entry whose structure is shown in FIG. Specifically, generic data (generic_data) is arranged in the field of “itu_t_t135_payload_byte”.
- FIG. 10 shows a structure example (syntax) of generic data (generic_data), and FIG. 11 shows contents (semantics) of main information in the structure example.
- the 1-bit field of “end_flag” indicates whether or not the container target data is ended, that is, whether or not the last byte of the container target data is included in the insertion division part.
- the 1-bit field of “joint_delivery_flag” indicates whether or not the divided container target data (divided portion) is inserted into a plurality of media encoded streams, that is, whether or not the divided portion is inserted into other media encoded streams as well. Indicates whether or not.
- the 13-bit field of “fcounter” indicates the division position of the divided container target data (insertion division part) in ascending count. This “fcounter”, together with the “start_flag” and “end_flag” described above, constitutes the order information of the divided parts.
- the 8-bit field of “data_id” indicates the ID of the container target data.
- the 8-bit field of “payload_length” indicates the size of the payload in bytes.
- “start_flag” is “1” and the start of container target data
- “data_type” indicates the type of data. For example, “0x01” indicates that it is intended for network access.
- Payment_identifier indicates the type of container target data. For example, “0x01” indicates URL data, and “0x02” indicates a time stamp.
- “Target_data_size” indicates the size of the container target data.
- a field of “data_payload_byte” indicates an arrangement area of container target data. A divided portion of the container target data is arranged in this arrangement area.
- FIG. 12 shows a structure example (syntax) of time information (time_information), which is container target data when “payload_identifier” is “0x02”, and FIG. 13 shows contents (semantics) of main information in the structure example. Is shown.
- the 1-bit field of “absolute_time_flag” indicates whether the execution time is UTC absolute time or a difference value from the reference time. “1” indicates UTC absolute time. “0” indicates a difference value from the reference time.
- the multiplexer 116 converts the video stream output from the video encoder 112 and the audio stream output from the inserter 115 into which each divided portion of the predetermined information (inserted data DT) is inserted into a PES packet. Are further converted into transport packets and multiplexed to obtain a transport stream TS as a multiplexed stream.
- the multiplexer 114 inserts identification information indicating that predetermined information is inserted into the transport stream TS corresponding to the audio stream. Specifically, a data container descriptor (data_container descriptor) is inserted into an audio elementary stream loop under the program map table (PMT).
- PMT program map table
- FIG. 14 shows a structural example (Syntax) of the data container descriptor.
- FIG. 15 shows the contents (Semantics) of main information in the structural example.
- An 8-bit field of “descriptor_tag” indicates a descriptor type. Here, it indicates a data container descriptor.
- the 8-bit field of “descriptor_length” indicates the length (size) of the descriptor, and indicates the number of subsequent bytes as the length of the descriptor.
- 1-bit field of “data_insertion_flag” indicates whether or not predetermined information is inserted in the stream. “1” indicates that there is an insertion, and “0” indicates that there is no insertion.
- a 1-bit field of “joint_stream_delivery_flag” indicates whether insertion of content target data (predetermined information) is present in another stream in addition to the stream. “1” indicates that there is data insertion in another stream, and “0” indicates that there is no data insertion in the other stream.
- the 6-bit field of “media_stream_id” indicates the identification number of the stream.
- “joint_stream_delivery_flag” is “1”
- an 8-bit field of “number_of_joint_streams” exists. This field indicates the number (1 or more) of other streams in which the content target data (predetermined information) is inserted. For this number, there are an 8-bit field of “media_stream_id”, an 8-bit field of “data_bitrate”, and an 8-bit field of “data_insertion_ratio”.
- the field “media_stream_id” indicates a stream identification number.
- the field of “data_bitrate” indicates a bit rate (target bit rate) after data insertion with a value in units of 1000 bps.
- the video data SV is supplied to the video encoder 112.
- H.264 is applied to the video data SV.
- H.264 / AVC, H.H. Encoding such as H.265 / HEVC is performed, and a video stream including encoded video data is generated.
- the audio data SA is supplied to the audio encoder 113.
- the audio data SA is encoded by the MPEG-H 3D Audio compression format to generate an audio stream R_EM1.
- the insertion data DT as predetermined information is supplied to the splitter 114.
- the insertion data DT is divided to obtain a predetermined number of divided portions f (i). In this case, it is divided so that the bit rate of the insertion data DT falls within the allowable bit rate AVR.
- This allowable bit rate AVR is calculated by subtracting the bit rate CR of the audio stream R_EM1 from the target bit rate TR specified by the CPU 111.
- the audio stream R_EM1 obtained by the audio encoder 113 is supplied to the inserter 115, and a predetermined number of divided portions f (i) of the insertion data DT obtained by the splitter 114 are further supplied to the inserter 115.
- a predetermined number of divided portions f (i) of the insertion data DT are sequentially inserted into a predetermined number of audio frames of the audio stream, with order information for reconstruction being added.
- the video stream generated by the video encoder 112 is supplied to the multiplexer 116. Also, an audio stream in which the insertion data DT is inserted by the inserter 115 is supplied to the multiplexer 116. In this multiplexer 116, each stream is packetized and multiplexed, and a transport stream TS is obtained as transmission data.
- a data container descriptor (see FIG. 14) is inserted in the audio elementary stream loop under the program map table (PMT).
- PMT program map table
- This descriptor includes identification information indicating that predetermined information (inserted data DT) is inserted into the corresponding audio stream.
- FIG. 16 illustrates a configuration example of the stream generation unit 110B included in the broadcast transmission device 100.
- this stream generation unit 110B two audio streams are generated, and each divided portion obtained by dividing predetermined information (inserted data) is inserted into the predetermined number of audio frames.
- parts corresponding to those in FIG. 2 are given the same reference numerals.
- the stream generation unit 110B includes a CPU 111, a video encoder 112, audio encoders 113-1, 113-2, a splitter 114, inserters 115-1, 115-2, and a multiplexer 116.
- the splitter 114 and the inserters 115-1 and 115-2 may be included as part of the audio encoders 113-1 and 113-2 or the CPU 111.
- the CPU 111 controls each unit of stream generation unit 110B.
- the video encoder 112 applies MPEG2, H.264 to the video data SV.
- H.264 / AVC, H.H. Encoding such as H.265 / HEVC is performed to generate a video stream (video elementary stream).
- the video data SV is, for example, video data reproduced from a recording medium such as a hard disk (HDD) or live video data obtained by a video camera.
- the audio encoders 113-1 and 113-2 respectively encode the audio data SA1 and SA2 with the MPEG-H 3D Audio compression format to generate an audio stream (audio elementary stream).
- audio data SA1 and SA2 are possible.
- the audio data SA1 is channel data
- the audio data SA2 is object data
- the audio data SA1 is stereo data
- the audio data SA2 is data of other channels.
- the audio data SA1 and SA2 correspond to the video data SV described above, and are audio data reproduced from a recording medium such as an HDD or live audio data obtained by a microphone.
- the splitter 114 divides the insertion data DT constituting the predetermined information in the same manner as the splitter 114 of the stream generation unit 100A in FIG. 2 to obtain a predetermined number of divided portions f (i). .
- the data is divided by the above-described method (1) or (2) so that the bit rate of the insertion data DT inserted into each audio stream falls within the allowable bit rate.
- the inserters 115-1 and 115-2 are not described in detail, but the audio streams R_EM1 generated by the audio encoders 113-1 and 113-2 in the same manner as the inserter 115 in the stream generation unit 100A of FIG. , R_EM2, a predetermined number of divided portions f (i) obtained by dividing by the splitter 114 are sequentially inserted with reordering information for reconstruction.
- FIG. 17 shows an example of division of the insertion data DT when divided by the method (1) and the size of each audio frame when each divided portion f (i) is inserted into corresponding audio frames of two audio streams.
- An example of the transition of is shown.
- the insertion data DT is divided into six divided portions f0, f1, f2, f3, f4, and f5.
- the three divided parts f0, f2, and f4 are inserted into the audio frames A0, A1, and A2 of the audio stream R_EM1 generated by the audio encoder 113-1. Further, the three divided portions f1, f3, and f5 are inserted into the audio frames B0, B1, and B2 of the audio stream R_EM2 generated by the audio encoder 113-2, respectively.
- the splitter 114 calculates the allowable bit rate AVR1 by subtracting the bit rate CR1 of the audio stream R_EM1 from the target bit rate TR1 specified by the CPU 111. Then, the splitter 114 divides this allowable bit rate AVR1 by the number of audio frames AU_frec generated in one second to determine the fixed size AIS1, that is, the sizes of f0, f2, and f4. In this case, the data size of each audio frame after insertion reflects the change in the data size of each audio frame before insertion as it is.
- the splitter 114 calculates the allowable bit rate AVR2 by subtracting the bit rate CR2 of the audio stream R_EM2 from the target bit rate TR2 specified by the CPU 111. Then, the splitter 114 divides this allowable bit rate AVR2 by the number of audio frames AU_frec generated in one second to determine the fixed size AIS2, that is, the sizes of f0, f2, and f4. In this case, the data size of each audio frame after insertion reflects the change in the data size of each audio frame before insertion as it is.
- FIG. 18 shows an example of division of the insertion data DT when divided by the method (2), and the size of each audio frame when each divided portion f (i) is inserted into the corresponding audio frame of two audio streams.
- An example of the transition of is shown.
- the insertion data DT is divided into six divided portions f0, f1, f2, f3, f4, and f5.
- the three divided parts f0, f2, and f4 are inserted into the audio frames A0, A1, and A2 of the audio stream R_EM1 generated by the audio encoder 113-1. Further, the three divided portions f1, f3, and f5 are inserted into the audio frames B0, B1, and B2 of the audio stream R_EM2 generated by the audio encoder 113-2, respectively.
- the splitter 114 calculates the allowable bit rate AVR1 by subtracting the bit rate CR1 of the audio stream R_EM1 from the target bit rate TR1 specified by the CPU 111. Then, the splitter 114 calculates the first size AIS1 by dividing the allowable bit rate AVR1 by the number of audio frames AU_frec generated in one second. In addition, the splitter 114 calculates the second size ACS1 by dividing the bit rate CR1 of the audio stream R_EM1 by the number of audio frames AU_frec generated in one second.
- the splitter 114 calculates the fixed size (AIS1 + ACS1) by adding the first size AIS1 and the second size ACS1, and subtracts the data size of the audio frame at the insertion destination from the fixed size to obtain the sizes of f0, f2, and f4. To decide.
- the data size of each audio frame after insertion is a constant data size except for the audio frame into which the last divided portion of the insertion data DT is inserted, regardless of the variation in the data size of each audio frame before insertion. It becomes.
- the splitter 114 calculates the allowable bit rate AVR2 by subtracting the bit rate CR2 of the audio stream R_EM2 from the target bit rate TR2 specified by the CPU 111. Then, the splitter 114 calculates the first size AIS2 by dividing the allowable bit rate AVR2 by the number AU_frec of audio frames generated in one second. Also, the splitter 114 calculates the second size ACS2 by dividing the bit rate CR2 of the audio stream R_EM2 by the number of audio frames AU_frec generated in one second.
- the splitter 114 calculates the fixed size (AIS2 + ACS2) by adding the first size AIS2 and the second size ACS2, and subtracts the data size of the audio frame at the insertion destination from the fixed size to obtain the sizes of f1, f3, and f5. To decide.
- the data size of each audio frame after insertion is a constant data size except for the audio frame into which the last divided portion of the insertion data DT is inserted, regardless of the variation in the data size of each audio frame before insertion. It becomes.
- AIS1, ACS1, AIS2, and ACS2 are calculated by the following mathematical formulas (4), (5), (6), and (7), respectively.
- AIS1 AVR1 / 8 / AU_frec (4)
- ACS1 CR1 / 8 / AU_frec (5)
- AIS2 AVR2 / 8 / AU_frec (6)
- ACS2 CR1 / 8 / AU_frec (7)
- the multiplexer 116 inserts the divided part of the video stream output from the video encoder 112 and the predetermined information (inserted data DT) output from the inserters 115-1 and 115-2. Two audio streams are converted into PES packets, further transport packets are multiplexed, and a transport stream TS as a multiplexed stream is obtained.
- the multiplexer 116 inserts identification information indicating that predetermined information is inserted into the transport stream TS corresponding to the two audio streams. Specifically, a data container descriptor (see FIG. 14) is inserted into two audio elementary stream loops under the program map table (PMT).
- PMT program map table
- the video data SV is supplied to the video encoder 112.
- H.264 is applied to the video data SV.
- H.264 / AVC, H.H. Encoding such as H.265 / HEVC is performed, and a video stream including encoded video data is generated.
- the audio data SA1 and SA2 are supplied to the audio encoders 113-1 and 113-2, respectively.
- the audio data SA1 and SA2 are encoded by the MPEG-H 3D Audio compression format, and audio streams R_EM1 and R_EM2 are generated.
- the insertion data DT as predetermined information is supplied to the splitter 114.
- the insertion data DT is divided to obtain a predetermined number of divided portions f (i).
- the bit rate of the insertion data DT is divided so as to be within the allowable bit rates AVR1 and AVR2 regarding the two audio streams R_EM1 and R_EM2.
- the allowable bit rates AVR1 and AVR2 are calculated by subtracting the bit rates CR1 and CR2 of the audio streams R_EM1 and R_EM2 from the target bit rates TR1 and TR2 specified by the CPU 111, respectively.
- the audio streams R_EM1 and R_EM2 obtained by the audio encoders 113-1 and 113-2 are supplied to the inserters 115-1 and 115-2, and further inserted data obtained by the splitter 114 to the inserters 115-1 and 115-2.
- a predetermined number of divided portions f (i) of DT are supplied.
- order information for reconstruction is added to a predetermined number of audio frames of the audio streams R_EM1 and R_EM2, and a predetermined number of divided portions f (i) of the insertion data DT are added. Are inserted sequentially.
- the video stream generated by the video encoder 112 is supplied to the multiplexer 116.
- the multiplexer 116 is supplied with the audio stream in which the insertion data DT is inserted by the inserters 115-1 and 115-2.
- each stream is packetized and multiplexed, and a transport stream TS is obtained as transmission data.
- data container descriptors are inserted into two audio elementary stream loops respectively corresponding to two audio streams under the program map table (PMT).
- This descriptor includes identification information indicating that predetermined information (insertion data DT) is inserted into the corresponding audio stream, and whether the insertion of the predetermined information (insertion data DT) is present in other streams in addition to the stream. The identification information to be shown is included.
- FIG. 19 shows an example in which the container target data is transmitted with a plurality of generic data (generic_data) (see FIG. 10).
- the container target data is divided into a plurality of parts, and each of the plurality of divided parts is divided into a plurality of generic data and inserted into the field of “data_payload_byte”.
- start_flag corresponding to the first divided portion is set to “1”, indicating that it is the first divided portion.
- fcounter corresponding to the first divided portion is set to “0”.
- a field “target_data_size” exists corresponding to the first divided portion, and indicates the entire size of the container target data.
- “Start_flag” corresponding to the second and subsequent divided parts is set to “0”, indicating that it is not the first divided part.
- “Fcounter” corresponding to the second and subsequent divided portions is a count number that is sequentially incremented. When the number of divisions is n, the “fcounter” corresponding to the last division is “n ⁇ 1”. “End_flag” corresponding to the last divided portion is set to “1”, indicating that it is the last divided portion.
- FIG. 20 shows an example in which the container target data is transmitted with one generic data (generic_data).
- the container target data is not divided and inserted into the field of “data_payload_byte” of one generic data.
- start_flag is set to “1”, indicating that it is the first divided portion.
- end_flag is set to “1”, indicating that it is the last divided portion. Therefore, these pieces of information indicate that the data is not divided.
- a field “target_data_size” exists corresponding to this divided portion, and indicates the entire size of the container target data.
- FIG. 21 shows an example in which a plurality of container target data is transmitted as a plurality of generic data (generic_data).
- the example shown in the figure is an example in which two container target data are transmitted: container target data A in which “data_id” is “0” and container target data B in which “data_id” is “1”.
- the container target data A is divided into three, and each of the three divided parts is distributed into three generic data and inserted into the field of “data_payload_byte”.
- start_flag corresponding to the first divided portion is set to “1”, indicating that it is the first divided portion.
- fcounter corresponding to the first divided portion is set to “0”.
- target_data_size exists corresponding to the first divided portion, and indicates the entire size of the container target data.
- “Start_flag” corresponding to the second divided part is set to “0”, indicating that it is not the first divided part. Further, “end_flag” corresponding to the second divided portion is set to “0”, indicating that it is not the last divided portion. Further, “fcounter” corresponding to the second divided portion is set to “1”. In addition, “end_flag” corresponding to the third divided portion is set to “1”, indicating that it is the last divided portion. Then, “fcounter” corresponding to the last divided portion is set to “2”.
- the container target data B is not divided and inserted into the “data_payload_byte” field of one generic data (generic_data).
- start_flag is set to “1”, indicating that it is the first divided portion.
- end_flag is set to “1”, indicating that it is the last divided portion. Therefore, these pieces of information indicate that the data is not divided.
- a field “target_data_size” exists corresponding to this divided portion, and indicates the entire size of the container target data.
- FIG. 22 shows an example in which execution of a plurality of container target data is managed independently of the audio PTS based on time information added thereto.
- the container target data whose “data_id” is “1” starts executing at the corresponding execution time (exec_time), and the container target data whose “data_id” is “2” Execution is started at the timing of the time, and further, the container target data whose “data_id” is “3” is started at the timing of the corresponding execution time.
- FIG. 23 shows that the execution of the container target data (predetermined information) on the receiving side can be performed independently of the audio time stamp.
- the container target data is divided into three (Data_0-0, Data_0-1, Data_0-2), and is distributed and inserted into three audio frames.
- Audio timestamp (n) indicates a timing at which output of audio data (audio sample) obtained by decoding audio frame 0 (Frame 0) is started. This “Audio timestamp (n)” corresponds to the “UTC value”.
- Execution of container target data divided and inserted into three audio frames is started with the time when the difference value OFS is added to the reference time as the execution time (exec time). That is, the execution of the container target data is performed independently of the audio time stamp.
- the container target data has a relative type stamp in it
- synchronization management is performed based on the relative time based on the execution time.
- the container target data is a media file such as MP3 having no concept of time
- reproduction is started immediately from the execution time.
- reproduction synchronization management based on the execution time is performed.
- FIG. 23 shows the case where the execution time of the container target data is given by the difference value OFS from the reference time, but the execution time of this container target data is the UTC absolute value indicating the execution time (exec) time). The same applies even if given by the time “UTC ′ value”. That is, as the time information indicating the execution time added to the container target data, as described above, a UTC absolute time or a difference value from the reference time can be considered.
- FIG. 24 shows a specific example in which a plurality of container target data is synchronously managed based on the time information added thereto.
- information on the URL for connecting to the link server and a control code group for controlling the link server such as “Activate” or “Inactivate” are transmitted as container target data whose “data_id” is “1”. Is done.
- connection to the link server is executed by the URL at the execution time of “exec time1”, and then “Activate” or “Inactivate” is performed on the link server by the control code group from the execution time of “exec time3”. "Is executed, and media playback from the link server is started and ended.
- container target data whose “data_id” is “2” information on the URL for connecting to the link server and a control code group for controlling the link server such as “Activate” or “Inactivate” Is transmitted.
- connection to the link server is executed by the URL at the execution time of “exec time2”, and then “Activate” or “Inactivate” is performed on the link server by the control code group from the execution time of “exec time4”. "Is executed, and media playback from the link server is started and ended.
- a media file is transmitted as container target data whose “data_id” is “3”.
- Media file playback starts from the execution time of “exec time5”.
- FIG. 25 illustrates a structure example of the transport stream TS.
- This structural example is an example in which two audio streams exist and predetermined information is containered by the two audio streams (see FIG. 16).
- the portion related to the video stream is omitted.
- an audio stream PES packet “Audio PES” identified by PID1 there is an audio stream PES packet “Audio PES” identified by PID1, and an audio stream PES packet “Audio PES” identified by PID2.
- An audio stream (Audio coded stream) is inserted into these PES packets.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of audio frames of the audio stream.
- the transport stream TS includes a PMT (Program Map Table) as PSI (Program Specific Information).
- PSI is information describing to which program each elementary stream included in the transport stream belongs.
- the PMT has a program loop (Program ⁇ ⁇ ⁇ loop) that describes information related to the entire program.
- an elementary stream loop having information related to each elementary stream.
- an audio elementary stream loop (Audio ES loop) corresponding to each of the two audio streams.
- each audio elementary stream loop (Audio
- information such as PID (packet identifier)
- PID packet identifier
- the descriptor describing the information relevant to the stream is also arrange
- PID packet identifier
- the above-described data container descriptor (data_container descriptor) (see FIG. 14) is arranged.
- a stream identifier descriptor (Stream_identifier descriptor) having information of “Component_tag” is arranged as one of descriptors.
- a component descriptor (Component_descriptor) is arranged under an EIT (Event Information Table).
- the above-described data container descriptor (data_container descriptor) may be arranged in the EIT. In that case, identification information for providing insertion of metadata on the receiver EPG display is provided.
- This component descriptor is associated with the above-described audio elementary stream loop under the PMT by “Component_tag”.
- predetermined information for example, net access information
- FIG. 26 shows a configuration example of the set top box 200.
- the set top box 200 includes a CPU 201, a flash ROM 202, a DRAM 203, an internal bus 204, a remote control receiving unit 205, and a remote control transmitter 206.
- the set top box 200 includes an antenna terminal 211, a digital tuner 212, a demultiplexer 213, a video decoder 214, an audio framing unit 215, an HDMI transmission unit 216, and an HDMI terminal 217.
- the CPU 201 controls the operation of each part of the set top box 200.
- the flash ROM 202 stores control software and data.
- the DRAM 203 constitutes a work area for the CPU 201.
- the CPU 201 develops software and data read from the flash ROM 202 on the DRAM 203 and activates the software to control each unit of the set top box 200.
- the remote control receiving unit 205 receives a remote control signal (remote control code) transmitted from the remote control transmitter 206 and supplies it to the CPU 201.
- CPU201 controls each part of set top box 200 based on this remote control code.
- the CPU 201, flash ROM 202, and DRAM 203 are connected to the internal bus 204.
- the antenna terminal 211 is a terminal for inputting a television broadcast signal received by a receiving antenna (not shown).
- the digital tuner 212 processes the television broadcast signal input to the antenna terminal 211 and outputs a transport stream TS corresponding to the user's selected channel.
- the demultiplexer 213 extracts a video stream packet from the transport stream TS and sends it to the video decoder 214.
- the video decoder 214 reconstructs a video stream from the video packets extracted by the demultiplexer 213 and performs decoding processing to obtain uncompressed video data (image data).
- the demultiplexer 213 extracts one or two audio stream packets from the transport stream TS to reconstruct the audio stream.
- the demultiplexer 213 extracts various information such as descriptor information from the transport stream TS and sends it to the CPU 201.
- the various information includes the information of the data container descriptor (data_cotainercodescriptor) described above (see FIG. 14).
- the CPU 201 recognizes from the data container descriptor that predetermined information is inserted into the corresponding audio stream. Further, it is recognized from this data container descriptor whether the insertion of the predetermined information is present in other streams in addition to the corresponding audio stream. For example, when there is one audio stream and predetermined information is inserted into it, it is recognized that there is no predetermined information inserted from the data container descriptor to another stream. Also, for example, when there are two audio streams and predetermined information is inserted in both of them, it is recognized from the data container descriptor that there is insertion of the predetermined information in another stream.
- the HDMI transmission unit 216 sends the uncompressed video data obtained by the video decoder 214 and the audio stream after being framed by the audio framing unit 215 from the HDMI terminal 217 by communication conforming to HDMI.
- the HDMI transmission unit 216 packs the video data and the audio stream and outputs them to the HDMI terminal 217 for transmission through the HDMI TMDS channel. Details of the HDMI transmission unit 216 will be described later.
- a television broadcast signal input to the antenna terminal 211 is supplied to the digital tuner 212.
- the digital tuner 212 processes the television broadcast signal and outputs a transport stream TS corresponding to the user's selected channel.
- the transport stream TS output from the digital tuner 212 is supplied to the demultiplexer 213.
- video elementary stream packets are extracted from the transport stream TS and sent to the video decoder 214.
- a video stream is reconstructed from the video packets extracted by the demultiplexer 213, and then the video stream is decoded to obtain uncompressed video data.
- the uncompressed video data is supplied to the HDMI transmission unit 216.
- one or two audio stream packets are extracted from the transport stream TS, and an audio stream in which predetermined information is inserted is reconstructed.
- the audio stream is framed by the audio framing unit 215 and then supplied to the HDMI transmission unit 216.
- the HDMI transmission unit 216 packs the uncompressed video data and the audio stream, and transmits them from the HDMI terminal 217 to the audio amplifier 300 via the HDMI cable 610.
- various information such as descriptor information is extracted from the transport stream TS and sent to the CPU 201.
- the various information includes the information of the data container descriptor (data_cotainercodescriptor) described above (see FIG. 14). Thereby, the CPU 201 recognizes that predetermined information is inserted into the audio stream.
- FIG. 27 illustrates a configuration example of the television receiver 300.
- the television receiver 300 includes a CPU 301, a flash ROM 302, a DRAM 303, an internal bus 304, a remote control receiving unit 305, a remote control transmitter 306, and a communication interface 307.
- the television receiver 300 includes an antenna terminal 311, a digital tuner 312, a demultiplexer 313, a video decoder 314, an HDMI terminal 315, and an HDMI receiving unit 316.
- the television receiver 300 includes a video processing circuit 317, a panel drive circuit 318, a display panel 319, an audio decoder 320, an audio processing circuit 321, an audio amplification circuit 322, and a speaker 323.
- the CPU 301 controls the operation of each unit of television receiver 300.
- the flash ROM 302 stores control software and data.
- the DRAM 303 constitutes a work area for the CPU 301.
- the CPU 301 develops software and data read from the flash ROM 302 on the DRAM 303 to activate the software, and controls each unit of the television receiver 300.
- the remote control receiving unit 305 receives the remote control signal (remote control code) transmitted from the remote control transmitter 306 and supplies it to the CPU 301.
- the CPU 301 controls each part of the television receiver 300 based on this remote control code.
- the CPU 301, flash ROM 302 and DRAM 303 are connected to the internal bus 304.
- the communication interface 307 communicates with a server existing on a network such as the Internet under the control of the CPU 301.
- the communication interface 307 is connected to the internal bus 304.
- the antenna terminal 311 is a terminal for inputting a television broadcast signal received by a receiving antenna (not shown).
- the digital tuner 312 processes the television broadcast signal input to the antenna terminal 311 and outputs a transport stream TS corresponding to the user's selected channel.
- the demultiplexer 313 extracts a video stream from the transport stream TS and sends it to the video decoder 314.
- the video decoder 314 decodes the video stream to obtain uncompressed video data (image data).
- the demultiplexer 313 extracts one or two audio streams from the transport stream TS and sends them to the audio decoder 320. As described in the stream generation units 110A and 110B (see FIGS. 2 and 16), predetermined information is inserted into the audio stream.
- the demultiplexer 213 extracts various information such as descriptor information from the transport stream TS and sends it to the CPU 301.
- the various information includes the information of the data container descriptor (data_cotainercodescriptor) described above (see FIG. 14).
- the CPU 301 recognizes from the data container descriptor that predetermined information is inserted into the corresponding audio stream. Further, it is recognized from this data container descriptor whether the insertion of the predetermined information is present in other streams in addition to the corresponding audio stream.
- the HDMI receiving unit 316 receives uncompressed video data and an audio stream supplied to the HDMI terminal 315 via the HDMI cable 400 by communication conforming to HDMI. As described in the above set top box 200 (see FIG. 26), predetermined information is inserted into the audio stream. Details of the HDMI receiving unit 316 will be described later.
- the video processing circuit 317 performs a scaling process on the video data obtained by the video decoder 314 or obtained by the HDMI receiving unit 316, and further, video data received from a server on the network by the communication interface 307, The video data for display is obtained by performing synthesis processing and the like.
- the panel drive circuit 318 drives the display panel 319 based on the display image data obtained by the video processing circuit 317.
- the display panel 319 includes, for example, an LCD (Liquid Crystal Display), an organic EL display (organic electroluminescence display), and the like.
- the audio decoder 320 performs decoding processing on the audio stream obtained by the demultiplexer 313 or obtained by the HDMI receiving unit 316 to obtain uncompressed audio data (audio data). Also, the audio decoder 320 extracts each divided portion of the predetermined information sequentially inserted into a predetermined number of audio frames of the audio stream, reconstructs the predetermined information based on the order information added thereto, and reconstructs the predetermined information.
- the predetermined information is sent to the CPU 301.
- the CPU 301 controls each unit of the television receiver 300 so that processing using the predetermined information is appropriately performed.
- identification information for identifying whether or not a divided portion is inserted into another media encoded stream is added to each divided portion inserted into a predetermined number of audio frames of each audio stream. Therefore, the audio decoder 320 can easily recognize whether or not a divided portion is inserted into another media encoded stream based on the identification information, and from all the audio streams in which the divided portion of the predetermined information is inserted. Thus, it is possible to efficiently and accurately extract all the divided portions of the predetermined information.
- FIG. 28 shows a configuration example of the audio decoder 320.
- This audio decoder 320 includes extractors 351-1 and 351-2, decoders 352-1 and 352-2, and a data reassembler 353.
- the extractor 351-1 extracts the divided portion IS 1 of the predetermined information inserted therein from the predetermined number of audio frames of the audio stream AS 1 (R_EM 1 + IS 1), and outputs the audio stream R_EM 1.
- the decoder 352-1 performs a decoding process on the audio stream R_EM1 and outputs audio data SA1.
- the extractor 351-2 takes out a divided portion IS 2 of predetermined information inserted therein from a predetermined number of audio frames of the audio stream AS 2 (R_EM 2 + IS 2) and outputs an audio stream R_EM 2.
- the decoder 352-2 performs a decoding process on the audio stream R_EM2 and outputs audio data SA2.
- the data reassembler 353 reconstructs predetermined information from the divided portions IS1 and IS2 extracted by the extractors 351-1 and 351-2 based on the order information added thereto, and the reconstructed predetermined information is displayed. Output.
- FIG. 29 schematically shows a processing example of the extractor 351-1 when only one audio stream AS1 is obtained from the demultiplexer 313.
- This example shows a case where the predetermined information (inserted data DT) is divided into six divided portions f0, f1, f2, f3, f4, and f5 by the method (2) (see FIG. 6). The same applies to the case of division by the method (1).
- the extractor 351-1 six divided portions f 0, f 1, f 2, f 3, f 4, and f 5 included in the six audio frames of the audio stream AS 1 are extracted and sent to the data reassembler 353.
- FIG. 30 schematically shows a processing example of the extractors 351-1 and 351-2 when two audio streams AS1 and AS2 are obtained from the demultiplexer 313.
- This example also shows a case where the predetermined information (inserted data DT) is divided into six divided parts f0, f1, f2, f3, f4, and f5 by the method (2) (see FIG. 17). The same applies to the case of division by the method (1).
- the extractor 351-1 three divided parts of f 0, f 2, and f 4 included in the three audio frames of the audio stream AS 1 are extracted and sent to the data reassembler 353. Further, the extractor 351-2 extracts the three divided portions of f 1, f 3, and f 5 included in the three audio frames of the audio stream AS 2 and sends them to the data reassembler 353.
- the audio processing circuit 521 performs processing such as D / A conversion on the audio data obtained by the audio decoder 320. This processing includes rendering processing for object data, channel data composition processing, channel number conversion processing, and the like as necessary.
- the audio amplification circuit 322 amplifies the audio signal of each channel output from the audio processing circuit 321 and supplies it to the speaker 323 of each channel.
- the operation of the television receiver 300 shown in FIG. 27 will be briefly described.
- the television broadcast signal input to the antenna terminal 311 is supplied to the digital tuner 312.
- the digital tuner 312 processes a television broadcast signal and obtains a transport stream TS corresponding to the user's selected channel.
- the transport stream TS obtained by the digital tuner 312 is supplied to the demultiplexer 313.
- a video stream is extracted from the transport stream TS and supplied to the video decoder 314.
- the video decoder 314 the video stream is decoded, and uncompressed video data is obtained.
- the uncompressed video data is supplied to the video processing circuit 317.
- the demultiplexer 313 extracts one or two audio streams from the transport stream TS and supplies them to the audio decoder 320.
- various information such as descriptor information is extracted from the transport stream TS and sent to the CPU 301.
- the various information includes the information of the data container descriptor (data_cotainercodescriptor) described above (see FIG. 14).
- the CPU 301 recognizes from the data container descriptor that predetermined information is inserted into the corresponding audio stream. Further, it is recognized from this data container descriptor whether the insertion of the predetermined information is present in other streams in addition to the corresponding audio stream.
- the HDMI receiving unit 316 receives uncompressed video data and one or two audio streams supplied to the HDMI terminal 315 via the HDMI cable 400 by communication conforming to HDMI. Uncompressed video data is supplied to the video processing circuit 317. The audio stream is supplied to the audio decoder 320.
- the video processing circuit 317 performs scaling processing on the video data obtained by the video decoder 314 or obtained by the HDMI receiving unit 316, and further, video data received from a server on the network by the communication interface 307, Video data for display is obtained by performing synthesis processing and the like.
- Display video data obtained by the video processing circuit 317 is supplied to the panel drive circuit 318.
- the panel drive circuit 318 drives the display panel 319 based on the display video data. As a result, an image corresponding to the video data for display is displayed on the display panel 319.
- the audio decoder 320 performs decoding processing on the audio stream obtained by the demultiplexer 313 or obtained by the HDMI receiving unit 316 to obtain uncompressed audio data (audio data). Further, the audio decoder 320 extracts each divided portion of the predetermined information sequentially inserted into a predetermined number of audio frames of the audio stream, and reconfigures the predetermined information based on the order information added thereto. The predetermined information reconstructed in this way is sent to the CPU 301. The CPU 301 appropriately controls each part of the television receiver 300 so that processing using this predetermined information is performed.
- the audio data obtained by the audio decoder 320 is supplied to the audio processing circuit 321.
- the audio processing circuit 321 performs necessary processing such as D / A conversion on the audio data.
- the audio data is amplified by the audio amplification circuit 322 and then supplied to the speaker 323. Therefore, sound corresponding to the display image on the display panel 319 is output from the speaker 323.
- FIG. 31 illustrates a configuration example of the HDMI transmission unit 216 (see FIG. 26) of the set-top box 200 and the HDM reception unit 316 (see FIG. 27) of the television receiver 300.
- the HDMI transmission unit 216 is an effective image section 21 (hereinafter referred to as “active” as appropriate) which is a section obtained by removing the horizontal blanking section 22 and the vertical blanking section 23 from the section from one vertical synchronization signal to the next vertical synchronization signal. (Also referred to as “video section”) (see FIG. 32), a differential signal corresponding to pixel data of an uncompressed image for one screen is transmitted to the HDMI receiving unit 316 in one direction through a plurality of channels.
- the HDMI transmission unit 216 transmits, at a plurality of channels, differential signals corresponding to at least audio data, control data, and other auxiliary data associated with an image in the horizontal blanking interval 22 or the vertical blanking interval 23. It transmits to the HDMI receiving unit 316 in one direction.
- the HDMI transmission unit 216 includes the HDMI transmitter 31.
- the transmitter 31 converts, for example, pixel data of an uncompressed image into a corresponding differential signal, and receives HDMI signals on three TMDS (Transition Minimized Differential Signaling) channels # 0, # 1, and # 2.
- TMDS Transition Minimized Differential Signaling
- the transmitter 31 converts audio data accompanying the uncompressed image, further necessary control data and other auxiliary data, etc. into corresponding differential signals, and converts them into three TMDS channels # 0, # 1, #. 2, serially transmit to the HDMI receiving unit 316 in one direction.
- the HDMI receiving unit 316 receives a differential signal corresponding to the pixel data transmitted from the HDMI transmitting unit 216 in one direction through a plurality of channels in the active video section 21 (see FIG. 32). Also, the HDMI receiving unit 316 transmits the audio transmitted in one direction from the HDMI transmitting unit 216 through a plurality of channels in the horizontal blanking interval 22 (see FIG. 32) or the vertical blanking interval 23 (see FIG. 21). A differential signal corresponding to data and control data is received.
- the transmission channel of the HDMI system including the HDMI transmission unit 216 and the HDMI reception unit 316 transmits the pixel clock with three TMDS channels # 0 to # 2 as transmission channels for transmitting pixel data and audio data.
- TMDS clock channel as a transmission channel, there are transmission channels called DDC (Display Data Channel) 33 and CEC (Consumer Electronics Control) line 34.
- the DDC 33 includes two signal lines included in the HDMI cable 400, and is used by the HDMI transmission unit 216 to read EDID (Extended Display Identification Data) from the HDMI reception unit 316 connected via the HDMI cable 400. Is done. That is, the HDMI receiving unit 316 includes an EDID ROM that stores EDID, which is performance information related to its performance (Configuration / Capability), in addition to the HDMI receiver 32. When the HDMI transmitting unit 216 reads the EDID, the decoding capability information on the receiving side is sent to the transmitting side.
- EDID Extended Display Identification Data
- the HDMI transmission unit 216 reads the EDID from the HDMI reception unit 316 connected via the HDMI cable 400 via the DDC 33. Then, the CPU 201 of the set top box 200 recognizes the performance of the television receiver 300 having the HDMI receiving unit 316 based on the EDID.
- the CEC line 34 is composed of one signal line included in the HDMI cable 400, and is used for bidirectional communication of control data between the HDMI transmission unit 216 and the HDMI reception unit 316. Also, the HDMI cable 400 includes an HPD line 35 connected to a pin called HPD (Hot Plug Detect).
- HPD Hot Plug Detect
- the source device can detect the connection of the sink device (destination device) by using the HPD line 35 by the DC bias potential.
- the HPD line 35 has a function of receiving a connection state notification from the sink device by a DC bias potential.
- the HPD line has a function of notifying the source device of the connection state by a DC bias potential.
- the HDMI cable 400 also includes a power supply line 36 that is used to supply power from the source device to the sink device.
- the HDMI cable 400 includes a reserved line 37.
- HDMI Ethernet channel HDMI Ethernet Channel: HEC
- audio return channel Audio Return Channel: ARC
- Ethernet and “Ethernet” are registered trademarks.
- FIG. 32 shows sections of various transmission data when image data of horizontal ⁇ vertical 1920 pixels ⁇ 1080 lines is transmitted in the TMDS channel.
- a video field 24 Video Data Period
- a data island period 25 Data Island Period
- a video field in which transmission data is transmitted using the three TMDS channels of HDMI There are three types of sections, namely, control section 26 (Control26Period).
- the video field period is a period from a rising edge (Active Edge) of a certain vertical synchronizing signal to a rising edge of the next vertical synchronizing signal, and includes a horizontal blanking period 22 (Horizontal Blanking) and a vertical blanking period 23 ( Vertical Blanking) and an effective pixel section 21 (Active Video) that is a section obtained by removing the horizontal blanking period and the vertical blanking period from the video field section.
- the video data section 24 is assigned to the effective pixel section 21.
- data of 1920 pixels (pixels) ⁇ 1080 lines of effective pixels (Active Pixel) constituting uncompressed image data for one screen is transmitted.
- the data island period 25 and the control period 26 are assigned to the horizontal blanking period 22 and the vertical blanking period 23.
- auxiliary data (Auxiliary Data) is transmitted.
- the data island section 25 is allocated to a part of the horizontal blanking period 22 and the vertical blanking period 23.
- audio data packets that are not related to the control among the auxiliary data are transmitted.
- the control section 26 is allocated to other portions of the horizontal blanking period 22 and the vertical blanking period 23.
- vertical synchronization signals, horizontal synchronization signals, control packets, and the like, which are data related to control, of auxiliary data are transmitted.
- Example of communication between set-top box and TV receiver For example, the CPU 201 of the set-top box 200 negotiates with the CPU 301 of the television receiver 300 by communication using, for example, a CEC line, grasps an audio stream required by the television receiver 300, and the audio stream It is possible to send only.
- FIG. 33 shows an example of an operation involving negotiation in the set top box 200 and the television receiver 300.
- the set top box 200 displays a display signal of a program table that clearly shows a program that can be linked to the net based on a component descriptor (Component_descriptor) under the EIT and a data container descriptor (data_container_descriptor). And the program guide is displayed on the display screen of the television receiver 300.
- Component_descriptor component descriptor
- data_container_descriptor data_container_descriptor
- the television receiver 300 uses the program guide displayed on the display screen to select a program that can be linked to the Internet, and sends the program selection signal to the set top box 200.
- the set top box 200 receives the program based on the program selection signal from the television receiver 300.
- the set-top box 200 detects an audio stream in which predetermined information (inserted data) is inserted, based on a data container descriptor (Data_container descriptor).
- the set top box 200 accesses the EDID of the television receiver 300 and checks the reception possibility.
- the television receiver 300 notifies the set top box 200 that an audio stream (compressed stream) can be received by EDID. (6) The television receiver 300 notifies the set top box 200 that there is one audio playback decoder by EDID.
- the set top box 200 needs to receive (8) two audio streams (for example, two streams of a main stream and a sub stream). Is notified to the television receiver 300.
- the television receiver 300 sends an acknowledge (ACK) signal to the set top box 200.
- the set top box 200 has one audio playback decoder of the television receiver 300, but transmits two audio streams.
- the television receiver 300 receives two streams. With regard to the main stream, the extracted portion of the predetermined information is extracted by the extractor, while the main stream is transferred to the decoder and decoded. On the other hand, with respect to the substream, a divided portion of the inserted predetermined information is extracted by an extractor. Then, the television receiver 300 reconstructs the predetermined information by the data reassembler from each divided portion of the predetermined information extracted by each extractor. (12) The television receiver 300 performs network access using the reconfigured predetermined information, here, the net access information, acquires the predetermined information, displays the information, and the like.
- the broadcast transmission apparatus 100 divides each predetermined portion obtained by dividing predetermined information into a predetermined number of audio frames of an audio stream so that the bit rate falls within the predetermined bit rate. Insert and send. For this reason, the overall bit rate including the audio stream can be suppressed to the target bit rate, and it is possible to satisfactorily perform transmission by inserting predetermined information into the audio stream.
- the broadcast transmission apparatus 100 inserts and transmits each divided portion obtained by dividing predetermined information into a predetermined number of audio frames of one or more, for example, two audio streams. . Therefore, it is possible to shorten the time required for transmitting the entire predetermined information.
- the broadcast transmission apparatus 100 transmits predetermined information inserted into an audio stream.
- the broadcast transmission apparatus 100 inserts predetermined information into another media encoded stream such as a video stream and transmits it.
- FIG. 34 shows a configuration example of the stream generation unit 110C included in the broadcast transmission device 100 in that case.
- the stream generation unit 110C includes a control unit 111, a video encoder 112, an audio encoder 113, a splitter 114, inserters 115 and 117, and a multiplexer 116.
- the CPU 111 controls each unit of the stream generation unit 110C.
- the video encoder 112 receives MPEG2, H.264, video data (image data) SV. H.264 / AVC, H.H. Encoding such as H.265 / HEVC is performed to generate a video stream (video elementary stream).
- the audio encoder 113 encodes the audio data (sound data) SA with the MPEG-H 3D Audio compression format to generate an audio stream (audio elementary stream).
- the splitter 114 divides the insertion data DT constituting the predetermined information in the same manner as the splitter 114 of the stream generation unit 110A in FIG. 2 to obtain a predetermined number of divided portions f (i).
- the data is divided by the method (1) or (2) so that the bit rate of the insertion data DT inserted into each of the video stream and the audio stream falls within the allowable bit rate.
- the inserter 117 divides a predetermined number of divided portions f (i) obtained by dividing by the splitter 114 into a predetermined number of access units (pictures) of the video stream R_EM3 generated by the video encoder 112 for reconstruction. Add order information and insert sequentially.
- generic data generator_data
- FIG. 10 generic data having the divided part f (i) is arranged in the SEI NAL unit using, for example, an entry whose structure example is shown in FIG.
- the inserter 115 is divided by the splitter 114 into a predetermined number of audio frames of the audio stream R_EM1 generated by the audio encoder 113 in the same manner as the inserter 115 in the stream generation unit 100A of FIG.
- the predetermined number of divided portions f (i) obtained in this way are sequentially inserted with order information for reconstruction.
- the multiplexer 116 inserts each divided portion of the predetermined information (inserted data DT) output from the inserter 115 and the video stream into which each divided portion of the predetermined information (inserted data DT) output from the inserter 117 is inserted.
- the audio stream thus converted is converted into a PES packet, further converted into a transport packet, and multiplexed to obtain a transport stream TS as a multiplexed stream.
- the multiplexer 116 inserts identification information indicating that predetermined information is inserted into the transport stream TS corresponding to each of the video stream and the audio stream. Specifically, a data container descriptor (see FIG. 14) is inserted into the video elementary stream loop and the audio elementary stream loop under the program map table (PMT).
- PMT program map table
- FIG. 35 shows a structure example of the transport stream TS.
- This structure example is an example in the case where predetermined information is containered by two streams of a video stream and an audio stream (see FIG. 34).
- Video stream (Video coded stream) is inserted into the PES packet of the video stream.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of access units (pictures) of the video stream.
- An audio stream (Audio ⁇ ⁇ ⁇ ⁇ ⁇ coded stream) is inserted into the PES packet of the audio stream.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of audio frames of the audio stream.
- the transport stream TS includes a PMT (Program Map Table) as PSI (Program Specific Information).
- PSI is information describing to which program each elementary stream included in the transport stream belongs.
- the PMT has a program loop (Program ⁇ ⁇ ⁇ loop) that describes information related to the entire program.
- an elementary stream loop having information related to each elementary stream.
- an elementary stream loop having information related to each elementary stream.
- each elementary stream loop (ES loop) information such as a PID (packet identifier) is arranged corresponding to each stream, and a descriptor describing information related to the stream is also arranged.
- PID packet identifier
- descriptor describing information related to the stream is also arranged.
- data_container descriptor data_container descriptor
- a stream identifier descriptor (Stream_identifier ⁇ ⁇ ⁇ descriptor) having information of “Component_tag” is arranged as one of the descriptors.
- a component descriptor (Component_descriptor) is arranged under EIT (Event Information Table).
- the above-described data container descriptor (data_container descriptor) may be arranged in the EIT. In that case, identification information for providing insertion of metadata on the receiver EPG display is provided.
- This component descriptor is associated with each elementary stream loop under the above-described PMT by “Component_tag”.
- predetermined information for example, net access information is inserted in the video / audio stream of a certain program, and when displaying a program table such as EPG, a display such as “net link” is displayed on the part of the certain program. This makes it possible to notify the TV viewer that the distribution is accessible via the Internet.
- the 26 is configured to transmit uncompressed video data obtained by decoding the received video stream to the television receiver 300 via the HDMI cable 400. ing. However, when the predetermined information is inserted into the video stream for transmission as described above, the received video stream is transmitted to the television receiver 300 via the HDMI cable 400 without being decoded. It becomes. In this case, the video stream is decoded by the television receiver 300.
- the stream generation unit 110C in FIG. 34 inserts predetermined information into both the video stream and the audio stream for transmission. Although detailed description is omitted, a configuration in which predetermined information is inserted only into a video stream and transmitted is also conceivable.
- the audio compression format is MPEG-H 3D Audio.
- the present technology can be similarly applied when the audio compression format is another audio compression format such as AAC, AC3, or AC4.
- FIG. 36 (a) shows the structure of the AC4 Simple Transport layer.
- a sync word field As shown in FIG. 36 (b), there is a TOC (Table Of Content) field at the head, and a predetermined number of substream (Substream) fields thereafter.
- TOC Table Of Content
- a metadata area exists in the substream (ac4_substream_data ()), and a field "umd_payloads_substream ()" is provided therein.
- the “umd_payload_byte” field contains, for example, generic data (generic_data) (see FIG. 10) having a divided portion of predetermined information using an entry whose structure is shown in FIG. Be placed.
- the TOC (ac4_toc ()) includes a field “ac4_presentation_info ()”, and further includes a field “umd_info ()”. Indicates that metadata is inserted in the field of “umd_payloads_substream ()” described above.
- the container stream (multiplexed stream) is an MPEG-2 transport stream (transport stream TS)
- transport stream TS transport stream
- the present technology can be similarly applied to a system that is distributed in a container stream of MP4 or other formats.
- MMT MPEG-Media-Transport
- FIG. 38 shows an example of the structure of an MMT transport stream.
- This structural example is an example in which two audio streams exist and predetermined information is containered by the two audio streams (see FIG. 16).
- the portion related to the video stream is omitted.
- the MPU packet “MPU audio” of the audio stream AS identified by ID1 and the MPU packet “MPU audio” of the audio stream AS identified by ID2 Is placed.
- An audio stream (Audio ⁇ ⁇ ⁇ ⁇ ⁇ coded stream) is inserted into these MPU packets.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of audio frames of the audio stream.
- the packet type is “message”
- various message packets are arranged in the MMT transport stream.
- One of the message packets is a PA (Packet Access) message packet.
- the PA message packet includes a table such as MPT.
- information such as an asset type (Asset_type) and a packet ID (Packet_id) is arranged in correspondence with each stream as an asset, and a descriptor describing information related to the stream is also arranged.
- the above-described data container descriptor (data_container descriptor) (see FIG. 14) is arranged.
- an MH stream identifier descriptor (MH-Stream_identifier descriptor) having information of “Component_tag” is arranged.
- an MH component group descriptor (MH-Component_Group_Descriptor) is arranged under the MH-EIT (MH-Event Information Table).
- the above-described data container descriptor (data_container descriptor) may be arranged in the MH-EIT. In that case, identification information for providing insertion of metadata on the receiver EPG display is provided.
- This MH / component / group / descriptor is associated with information of each asset (audio stream) under the MPT described above by “Component_tag”.
- Component_tag information of each asset (audio stream) under the MPT described above by “Component_tag”.
- FIG. 39 shows another structural example of the MMT transport stream.
- This structure example is an example in the case where predetermined information is containered by two streams of a video stream and an audio stream (see FIG. 34).
- the MPU packet “MPU video” of the video stream VS identified by ID1 and the MPU packet “MPU audio” of the audio stream AS identified by ID2 Is placed.
- the video stream (Video coded stream) is inserted into the MPU packet of the video stream.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of access units (pictures) of the video stream.
- an audio stream (Audio coded ⁇ stream) is inserted into the MPU packet of the audio stream.
- Generic data (generic_data) (see FIG. 10) including each divided portion of the predetermined information is inserted into a predetermined number (including 1) of audio frames of the audio stream.
- the packet type is “message”
- various message packets are arranged in the MMT transport stream.
- One of the message packets is a PA (Packet Access) message packet.
- the PA message packet includes a table such as MPT.
- information such as an asset type (Asset_type) and a packet ID (Packet_id) is arranged in correspondence with each stream as an asset, and a descriptor describing information related to the stream is also arranged.
- the above-described data container descriptor (data_container descriptor) (see FIG. 14) is arranged.
- an MH stream identifier descriptor (MH-Stream_identifier descriptor) having information of “Component_tag” is arranged.
- an MH component group descriptor (MH-Component_Group_Descriptor) is arranged under the MH-EIT (MH-Event Information Table).
- the above-described data container descriptor (data_containerordescriptor) may be arranged. In that case, identification information for providing insertion of metadata on the receiver EPG display is provided.
- This MH / component / group / descriptor is associated with information of each asset (video stream, audio stream) under the MPT described above by “Component_tag”.
- Component_tag information of each asset (video stream, audio stream) under the MPT described above by “Component_tag”.
- FIG. 40 shows a configuration example of an MP4 stream (file) including audio track (track A) data when the audio compression format is MPEG-H 3D Audio or AC4.
- the illustrated example is an example in the case of fragmented MP4 (Fragmented MP4).
- a predetermined number of movie fragments (Movie Fragment) configured by a “moof” box containing control information and an “mdat” box containing media data itself are arranged. Since the “mdat” box contains a fragment obtained by fragmenting the track data, the control information entering the “moof” box is control information related to the fragment.
- the MP4 stream “audio bitstream” corresponding to the audio track a predetermined number of audio frames (access unit frames) are arranged in the “mdat” box of each movie fragment.
- a “traf” box exists in the “moof” box of each movie fragment, and a “tfdt” box exists in the box.
- this “tfdt” box there is a description of the decoding time “baseMediaDecodeTime” of the first access unit after the “moof” box.
- tfdt AC4 or mpegh
- sgpd the audio compression format
- tscl the audio compression format
- sound genericdata indicates that generic data (generic data) is inserted in the audio track.
- sound genericdata for example, the content of the data container descriptor (dat_cintainer descriptor) shown in FIG. 14 is described.
- FIG. 41 shows an MPD file description example when the data insertion stream is two audio streams.
- FIG. 42 shows an MPD file description example when the data insertion stream is an audio stream and a video stream.
- FIG. 43 shows the contents of main information in these description examples.
- a media stream (MP4 stream) and an MPD file as a metafile are transmitted to a receiving side through a communication network transmission path.
- This MPD file has an adaptation set (AdaptationSet) corresponding to the first and second audio streams.
- AdaptationSet adaptation set
- the existence of an audio stream having a bit rate of 96 kbps including the encoded data "" is shown.
- the location of the audio stream is indicated as “audio / jp / 96.mp4” by the description “ ⁇ baseURL> audio / jp / 96.mp4 ⁇ / BaseURL>”.
- the MPD file has an adaptation set (AdaptationSet) corresponding to each of the audio stream and the video stream.
- AdaptationSet adaptation set
- the existence of a video stream having a bit rate of 20 Mbps including the encoded data "" is shown.
- the location of the audio stream is indicated as “video / jp / 20000.mp4” by the description “ ⁇ baseURL> audio / jp / 20000.mp4 ⁇ / BaseURL>”.
- the transmission / reception system 10 including the set-top box 200 and the television receiver 300 is shown.
- a configuration in which a monitor device, a projector, or the like is arranged instead of the television receiver 300 is also conceivable.
- a configuration in which a recorder with a reception function, a personal computer, and the like are arranged instead of the set top box 200 is also conceivable.
- the set top box 200 and the television receiver 300 are connected to each other by a HDMI digital interface.
- the present invention can be similarly applied to the case where each device is connected by wire with a digital interface similar to HDMI, and even when connected by radio.
- the transmission / reception system 10 that receives the transport stream TS transmitted on the broadcast wave from the broadcast transmission apparatus 100 by the set-top box 200 is shown.
- a transmission / reception system 10A that directly receives a transport stream TS transmitted from a broadcast transmission apparatus 100 on a broadcast wave by a television receiver 300 is also conceivable.
- this technique can also take the following structures.
- An information insertion unit that sequentially inserts each divided part obtained by dividing predetermined information into a predetermined number of unit parts of a media encoded stream by adding order information for reconstruction;
- a transmission unit for transmitting a container of a predetermined format including the media encoded stream in which the predetermined information is inserted;
- the information insertion part A transmission apparatus that divides the predetermined information so that the bit rate of the predetermined information is within the predetermined bit rate.
- (2) The information insertion unit The transmission device according to (1), wherein the predetermined information is divided so that a data size of each divided portion is a fixed size.
- the information insertion unit The transmission according to (2), wherein the fixed size is calculated by dividing the allowable bit rate obtained by subtracting the bit rate of the media encoded stream from the target bit rate by the number of unit parts generated in one second. apparatus.
- the information insertion unit The transmission apparatus according to (1), wherein the predetermined information is divided so that a data size of each unit portion into which the divided portion is inserted is a fixed size.
- the information insertion unit A first size obtained by dividing the allowable bit rate obtained by subtracting the bit rate of the media encoded stream from the target bit rate by the number of unit parts generated in one second, and the media encoded stream
- the information insertion unit Each divided part obtained by dividing predetermined information into a predetermined number of unit parts of one or more media coded streams is sequentially inserted with order information for reconstruction, Identification information for identifying whether or not the divided portion is inserted into another media encoded stream is added to each of the divided portions inserted in a predetermined number of unit portions of the one or more media encoded streams.
- the transmitting device according to any one of (1) to (5).
- the container further includes an identification information insertion unit that inserts identification information indicating that there is an insertion of a divided portion of the predetermined information corresponding to each of the one or more media encoded streams.
- the transmitting apparatus according to (6).
- the identification information insertion unit Identification information indicating whether or not there is another media encoded stream in which the divided portion of the predetermined information is inserted, corresponding to each of the one or more media encoded streams, in the container;
- the transmission device according to (7), wherein when there is the other media encoded stream, identification information indicating the other media encoded stream is further inserted.
- the transmission unit includes a transmission step of transmitting a container of a predetermined format including the media encoded stream in which the predetermined information is inserted, In the above information insertion step, A transmission method that divides the predetermined information so that the bit rate of the predetermined information falls within the predetermined bit rate.
- An information insertion unit that sequentially inserts each divided portion obtained by dividing predetermined information into a predetermined number of unit portions of one or more media encoded streams, with the addition of order information for reconstruction.
- a transmission apparatus comprising: a transmission unit configured to transmit a container having a predetermined format including the one or more media encoded streams into which the divided portion of the predetermined information is inserted.
- the information insertion unit The transmission according to (10), wherein identification information for identifying whether or not the divided part is inserted into another media stream is added to each of the divided parts respectively inserted into the one or more media encoded streams.
- the container further includes an identification information insertion unit that inserts identification information indicating that there is an insertion of a divided portion of the predetermined information corresponding to each of the one or more media encoded streams. 10) or the transmission device according to (11).
- the identification information insertion unit In the container, identification information indicating whether there is another media encoded stream corresponding to each of the one or more media encoded streams, with the insertion of the divided portion of the predetermined information,
- the transmission device according to (12), wherein when the other media encoded stream is present, identification information indicating the other media encoded stream is further inserted.
- a transmission method comprising: transmitting a container of a predetermined format including the one or more media encoded streams into which the divided portion of the predetermined information is inserted by a transmission unit.
- a stream receiving unit for receiving one or more media encoded streams; Each divided part obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit parts of the one or more media encoded streams, with order information for reconstruction being added, Processing for extracting each divided portion of the predetermined information from the predetermined number of unit portions of the one or more media encoded streams, reconstructing the predetermined information based on the order information, and the reconstructed predetermined information
- a receiving apparatus further comprising a control unit that controls information processing using the.
- the stream receiver The receiving device according to (15), wherein the one or more media encoded streams are received from an external device via a digital interface.
- each divided portion of the predetermined information is extracted from a predetermined number of unit portions of the one or more media encoded streams based on the identification information (15) or (16) The receiving device described in 1.
- the receiver includes a stream receiving step of receiving one or more media encoded streams, Each division part obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit parts of the one or more media coded streams with order information for reconstruction added, A data configuration step of extracting each divided portion of the predetermined information from the predetermined number of unit portions of the one or more media encoded streams, and reconstructing the predetermined information based on the order information; A receiving method further comprising an information processing step for performing information processing using the reconfigured predetermined information.
- a receiving unit that receives a container of a predetermined format including one or more media encoded streams, Each divided part obtained by dividing predetermined information is sequentially inserted into a predetermined number of unit parts of the one or more media encoded streams, with order information for reconstruction being added, In the container, identification information indicating that there is an insertion of a divided portion of the predetermined information corresponding to each of the one or more media encoded streams is inserted,
- a receiving apparatus further comprising: a transmitting unit configured to transmit the one or more media encoded streams having the insertion of a divided portion of the predetermined information based on the identification information to the external device via a digital interface.
- the main feature of the present technology is that media is transmitted by inserting each divided portion obtained by dividing predetermined information into a predetermined number of unit portions of a media encoded stream so that the bit rate is within the predetermined bit rate and transmitting the media. That is, it is possible to satisfactorily perform transmission by inserting predetermined information into the encoded stream (see FIGS. 2, 4, and 6).
- Video decoder 315 HDMI terminal 316: HDMI receiving unit 317: Video processing circuit 318 ... Panel drive circuit 319 ... Display panel 320 ... Audio decoder 321 ... Audio processing circuit 322 ... Audio amplifier circuit 323... Speaker 351-1, 351-2... Extractor 352-1, 352-2... Decoder 353 .. data reassembler 400.
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Abstract
Description
メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報が挿入されたメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備え、
上記情報挿入部は、
上記所定情報のビットレートが所定ビットレートに収まるように、上記所定情報を分割する
送信装置にある。
1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報の分割部分が挿入された上記1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備える
送信装置にある。
1つ以上のメディア符号化ストリームを受信するストリーム受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が、再構成のための順番情報が付加されて順次挿入されており、
上記1つ以上のメディア符号化ストリームの上記所定数の単位部分から上記所定情報の各分割部分を取り出し、上記順番情報に基づいて上記所定情報を再構成する処理と、該再構成された所定情報を利用した情報処理を制御する制御部をさらに備える
受信装置にある。
1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを受信する受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が再構成のための順番情報が付加されて順次挿入されており、
上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報が挿入されており、
上記識別情報に基づいて上記所定情報の分割部分の挿入がある上記1つ以上のメディア符号化ストリームを上記外部機器にデジタルインタフェースを介して送信する送信部をさらに備える
受信装置にある。
1.実施の形態
2.変形例
[送受信システムの構成例]
図1は、実施の形態としての送受信システム10の構成例を示している。この送受信システム10は、放送送出装置100と、セットトップボックス(STB)200と、テレビ受信機(TV)300を有している。セットトップボックス200とテレビ受信機300は、HDMIケーブル400を介して接続されている。この場合、セットトップボックス200がソースで、テレビ受信機300はディスティネーションである。なお、「HDMI」は登録商標である。
図2は、放送送出装置100が備えるストリーム生成部110Aの構成例を示している。このストリーム生成部110Aでは、1つのオーディオストリームが生成され、その所定数のオーディオフレームに、所定情報(挿入データ)を分割して得た各分割部分が挿入される。このストリーム生成部110Aは、CPU111と、ビデオエンコーダ112と、オーディオエンコーダ113と、スプリッタ114と、インサータ115と、マルチプレクサ116を有している。なお、スプリッタ114やインサータ115は、オーディオエンコーダ113あるいはCPU111の一部として含まれる構成であってもよい。
(1)挿入データDTを各分割部分のデータサイズが固定サイズとなるように分割する。
(2)挿入データDTを各分割部分が挿入されたオーディオフレームのデータサイズが固定サイズとなるように分割する。
AIS=AVR/8/AU_frec ・・・(1)
ACS=CR/8/AU_frec ・・・(2)
Ratio = inserted_data_bitrate / compressed media_data_bitrate
ACS1=CR1/8/AU_frec ・・・(5)
AIS2=AVR2/8/AU_frec ・・・(6)
ACS2=CR1/8/AU_frec ・・・(7)
オーディオストリームへのコンテナ対象データ(所定情報=挿入データDT)の挿入についてさらに説明する。図19は、コンテナ対象データが、複数のジェネリックデータ(generic_data)(図10参照)で伝送される場合の例を示している。
コンテナ対象データ(所定情報)の同期管理について説明する。図22は、複数のコンテナ対象データの実行が、それに付加されている時刻情報に基づいて、オーディオ PTSとは独立して、管理される例を示している。
図25は、トランスポートストリームTSの構造例を示している。この構造例は、2つのオーディオストリームが存在し、その2つのオーディオストリームで所定情報をコンテナする場合の例である(図16参照)。この構造例では、ビデオストリームに係る部分は省略されている。
図26は、セットトップボックス200の構成例を示している。このセットトップボックス200は、CPU201と、フラッシュROM202と、DRAM203と、内部バス204と、リモコン受信部205と、リモコン送信機206を有している。また、セットトップボックス200は、アンテナ端子211と、デジタルチューナ212と、デマルチプレクサ213と、ビデオデコーダ214と、オーディオフレーミング部215と、HDMI送信部216と、HDMI端子217を有している。
図27は、テレビ受信機300の構成例を示している。このテレビ受信機300は、CPU301と、フラッシュROM302と、DRAM303と、内部バス304と、リモコン受信部305と、リモコン送信機306と、通信インタフェース307を有している。
図31は、セットトップボックス200のHDMI送信部216(図26参照)とテレビ受信機300のHDM受信部316(図27参照)の構成例を示している。
セットトップボックス200のCPU201は、例えば、テレビ受信機300のCPU301との間で例えばCECラインを用いた通信によりネゴシエーションを行って、テレビ受信機300が必要とするオーディオストリームを把握し、そのオーディオストリームのみを送信することが可能とされる。
なお、上述実施の形態において、放送送出装置100は、所定情報をオーディオストリームに挿入して送信する。しかし、放送送出装置100は、所定情報をビデオストリームなどのその他のメディア符号化ストリームに挿入して送信することも考えられる。
その場合、受信機EPG表示にメタデータの挿入を記す際の識別情報の提供になる。
Ratio = inserted_data_bitrate / compressed media_data_bitrate
(1)メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報が挿入されたメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備え、
上記情報挿入部は、
上記所定情報のビットレートが所定ビットレートに収まるように、上記所定情報を分割する
送信装置。
(2)上記情報挿入部は、
上記所定情報を、各分割部分のデータサイズが固定サイズとなるように分割する
前記(1)に記載の送信装置。
(3)上記情報挿入部は、
ターゲットビットレートから上記メディア符号化ストリームのビットレートを差し引いて得られた許容ビットレートを1秒間で発生する上記単位部分の数で割ることにより上記固定サイズを算出する
前記(2)に記載の送信装置。
(4)上記情報挿入部は、
上記所定情報を、上記分割部分が挿入された各単位部分のデータサイズが固定サイズとなるように分割する
前記(1)に記載の送信装置。
(5)上記情報挿入部は、
ターゲットビットレートから上記メディア符号化ストリームのビットレートを差し引いて得られた許容ビットレートを1秒間で発生する上記単位部分の数で割って得られた第1のサイズと、上記メディア符号化ストリームのビットレートを1秒間で発生する上記単位部分の数で割って得られた第2のサイズとを加算することで上記固定サイズを算出する
前記(4)に記載の送信装置。
(6)上記情報挿入部は、
1つ以上の上記メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入し、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に挿入される上記各分割部分に、他の上記メディア符号化ストリームへの上記分割部分の挿入があるか識別するための識別情報を付加する
前記(1)から(5)のいずれかに記載の送信装置。
(7)上記コンテナに、上記1つ以上の上記メディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報を挿入する識別情報挿入部をさらに備える
前記(6)に記載の送信装置。
(8)上記識別情報挿入部は、
上記コンテナに、上記1つ以上の上記メディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入がある他のメディア符号化ストリームが存在するかを示す識別情報と、
上記他のメディア符号化ストリームが存在するとき、該他のメディア符号化ストリームを示す識別情報をさらに挿入する
前記(7)に記載の送信装置。
(9)メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入ステップと、
送信部により、上記所定情報が挿入されたメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信ステップを有し、
上記情報挿入ステップでは、
上記所定情報のビットレートが所定ビットレートに収まるように、上記所定情報を分割する
送信方法。
(10)1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報の分割部分が挿入された上記1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備える
送信装置。
(11)上記情報挿入部は、
上記1つ以上のメディア符号化ストリームにそれぞれ挿入される上記各分割部分に、他の上記メディアストリームへの上記分割部分の挿入があるか識別する識別情報を付加する
前記(10)に記載の送信装置。
(12)上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報を挿入する識別情報挿入部をさらに備える
前記(10)または(11)に記載の送信装置。
(13)上記識別情報挿入部は、
上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入がある他のメディア符号化ストリームが存在するかを示す識別情報と、
上記他のメディア符号化ストリームが存在するとき、該他のメディア符号化ストリームを示す識別情報をさらに挿入する
前記(12)に記載の送信装置。
(14)1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入ステップと、
送信部により、上記所定情報の分割部分が挿入された上記1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信ステップを有する
送信方法。
(15)1つ以上のメディア符号化ストリームを受信するストリーム受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が、再構成のための順番情報が付加されて順次挿入されており、
上記1つ以上のメディア符号化ストリームの上記所定数の単位部分から上記所定情報の各分割部分を取り出し、上記順番情報に基づいて上記所定情報を再構成する処理と、該再構成された所定情報を利用した情報処理を制御する制御部をさらに備える
受信装置。
(16)上記ストリーム受信部は、
上記1つ以上のメディア符号化ストリームを、外部機器からデジタルインタフェースを介して受信する
前記(15)に記載の受信装置。
(17)上記1つ以上のメディア符号化ストリームの所定数の単位部分に挿入されている上記分割部分に、他の上記メディア符号化ストリームへの上記分割部分の挿入があるか識別するための識別情報が付加されており、
上記所定情報を再構成する処理では、上記識別情報に基づいて、上記1つ以上のメディア符号化ストリームの所定数の単位部分から上記所定情報の各分割部分を取り出す
前記(15)または(16)に記載の受信装置。
(18)受信部により、1つ以上のメディア符号化ストリームを受信するストリーム受信ステップを有し、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が再構成のための順番情報が付加されて順次挿入されており、
上記1つ以上のメディア符号化ストリームの上記所定数の単位部分から上記所定情報の各分割部分を取り出し、上記順番情報に基づいて上記所定情報を再構成するデータ構成ステップと、
上記再構成された所定情報を利用した情報処理を行う情報処理ステップをさらに有する
受信方法。
(19)1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを受信する受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が、再構成のための順番情報が付加されて順次挿入されており、
上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報が挿入されており、
上記識別情報に基づいて上記所定情報の分割部分の挿入がある上記1つ以上のメディア符号化ストリームを上記外部機器にデジタルインタフェースを介して送信する送信部をさらに備える
受信装置。
21・・・有効画素区間
22・・・水平帰線期間
23・・・垂直帰線期間
24・・・ビデオデータ区間
25・・・データアイランド区間
26・・・コントロール区間
31・・・HDMIトランスミッタ
32・・・HDMIレシーバ
33・・・DDC
34・・・CECライン
35・・・HPDライン
36・・・電源ライン
37・・・リザーブライン
100・・・放送送出装置
110A,110B,110C・・・ストリーム生成部
111・・・CPU
112・・・ビデオエンコーダ
113,113-1,113-2・・・オーディオエンコーダ
114・・・スプリッタ
115,115-1,115-2,117・・・インサータ
116・・・マルチプレクサ
200・・・セットトップボックス(STB)
201・・・CPU
202・・・フラッシュROM
203・・・DRAM
204・・・内部バス
205・・・リモコン受信部
206・・・リモコン送信機
211・・・アンテナ端子
212・・・デジタルチューナ
213・・・デマルチプレクサ
214・・・ビデオデコーダ
215・・・オーディオフレーミング部
216・・・HDMI送信部
217・・・HDMI端子
300・・・テレビ受信機(TV)
301・・・CPU
302・・・フラッシュROM
303・・・DRAM
304・・・内部バス
305・・・リモコン受信部
306・・・リモコン送信機
307・・・通信インタフェース
311・・・アンテナ端子
312・・・デジタルチューナ
313・・・デマルチプレクサ
314・・・ビデオデコーダ
315・・・HDMI端子
316・・・HDMI受信部
317・・・映像処理回路
318・・・パネル駆動回路
319・・・表示パネル
320・・・オーディオデコーダ
321・・・音声処理回路
322・・・音声増幅回路
323・・・スピーカ
351-1,351-2・・・エクストラクタ
352-1,352-2・・・デコーダ
353・・・データリアセンブラ
400・・・HDMIケーブル
Claims (19)
- メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報が挿入されたメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備え、
上記情報挿入部は、
上記所定情報のビットレートが所定ビットレートに収まるように、上記所定情報を分割する
送信装置。 - 上記情報挿入部は、
上記所定情報を、各分割部分のデータサイズが固定サイズとなるように分割する
請求項1に記載の送信装置。 - 上記情報挿入部は、
ターゲットビットレートから上記メディア符号化ストリームのビットレートを差し引いて得られた許容ビットレートを1秒間で発生する上記単位部分の数で割ることにより上記固定サイズを算出する
請求項2に記載の送信装置。 - 上記情報挿入部は、
上記所定情報を、上記分割部分が挿入された各単位部分のデータサイズが固定サイズとなるように分割する
請求項1に記載の送信装置。 - 上記情報挿入部は、
ターゲットビットレートから上記メディア符号化ストリームのビットレートを差し引いて得られた許容ビットレートを1秒間で発生する上記単位部分の数で割って得られた第1のサイズと、上記メディア符号化ストリームのビットレートを1秒間で発生する上記単位部分の数で割って得られた第2のサイズとを加算することで上記固定サイズを算出する
請求項4に記載の送信装置。 - 上記情報挿入部は、
1つ以上の上記メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入し、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に挿入される上記各分割部分に、他の上記メディア符号化ストリームへの上記分割部分の挿入があるか識別するための識別情報を付加する
請求項1に記載の送信装置。 - 上記コンテナに、上記1つ以上の上記メディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報を挿入する識別情報挿入部をさらに備える
請求項6に記載の送信装置。 - 上記識別情報挿入部は、
上記コンテナに、上記1つ以上の上記メディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入がある他のメディア符号化ストリームが存在するかを示す識別情報と、
上記他のメディア符号化ストリームが存在するとき、該他のメディア符号化ストリームを示す識別情報をさらに挿入する
請求項7に記載の送信装置。 - メディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入ステップと、
送信部により、上記所定情報が挿入されたメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信ステップを有し、
上記情報挿入ステップでは、
上記所定情報のビットレートが所定ビットレートに収まるように、上記所定情報を分割する
送信方法。 - 1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入部と、
上記所定情報の分割部分が挿入された上記1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信部を備える
送信装置。 - 上記情報挿入部は、
上記1つ以上のメディア符号化ストリームにそれぞれ挿入される上記各分割部分に、他の上記メディアストリームへの上記分割部分の挿入があるか識別する識別情報を付加する
請求項10に記載の送信装置。 - 上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報を挿入する識別情報挿入部をさらに備える
請求項10に記載の送信装置。 - 上記識別情報挿入部は、
上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入がある他のメディア符号化ストリームが存在するかを示す識別情報と、
上記他のメディア符号化ストリームが存在するとき、該他のメディア符号化ストリームを示す識別情報をさらに挿入する
請求項12に記載の送信装置。 - 1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分を、再構成のための順番情報を付加して順次挿入する情報挿入ステップと、
送信部により、上記所定情報の分割部分が挿入された上記1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを送信する送信ステップを有する
送信方法。 - 1つ以上のメディア符号化ストリームを受信するストリーム受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が、再構成のための順番情報が付加されて順次挿入されており、
上記1つ以上のメディア符号化ストリームの上記所定数の単位部分から上記所定情報の各分割部分を取り出し、上記順番情報に基づいて上記所定情報を再構成する処理と、該再構成された所定情報を利用した情報処理を制御する制御部をさらに備える
受信装置。 - 上記ストリーム受信部は、
上記1つ以上のメディア符号化ストリームを、外部機器からデジタルインタフェースを介して受信する
請求項15に記載の受信装置。 - 上記1つ以上のメディア符号化ストリームの所定数の単位部分に挿入されている上記分割部分に、他の上記メディア符号化ストリームへの上記分割部分の挿入があるか識別するための識別情報が付加されており、
上記所定情報を再構成する処理では、上記識別情報に基づいて、上記1つ以上のメディア符号化ストリームの所定数の単位部分から上記所定情報の各分割部分を取り出す
請求項15に記載の受信装置。 - 受信部により、1つ以上のメディア符号化ストリームを受信するストリーム受信ステップを有し、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が再構成のための順番情報が付加されて順次挿入されており、
上記1つ以上のメディア符号化ストリームの上記所定数の単位部分から上記所定情報の各分割部分を取り出し、上記順番情報に基づいて上記所定情報を再構成するデータ構成ステップと、
上記再構成された所定情報を利用した情報処理を行う情報処理ステップをさらに有する
受信方法。 - 1つ以上のメディア符号化ストリームを含む所定フォーマットのコンテナを受信する受信部を備え、
上記1つ以上のメディア符号化ストリームの所定数の単位部分に、所定情報を分割して得た各分割部分が、再構成のための順番情報が付加されて順次挿入されており、
上記コンテナに、上記1つ以上のメディア符号化ストリームのそれぞれに対応して、上記所定情報の分割部分の挿入があることを示す識別情報が挿入されており、
上記識別情報に基づいて上記所定情報の分割部分の挿入がある上記1つ以上のメディア符号化ストリームを上記外部機器にデジタルインタフェースを介して送信する送信部をさらに備える
受信装置。
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