CN105791957A - Ultra-high-definition digital television receiver using HEVC (high efficiency video coding) - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
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- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
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Abstract
The invention relates to an ultra-high-definition digital television receiver using HEVC (high efficiency video coding). The ultra-high-definition digital television receiver includes a receiving antenna, an audio playing module and a video playing module; the receiving antenna receives ultra-high-definition digital television signals, so that ultra-high-definition digital audio signals in the ultra-high-definition digital television signals can be played on the audio playing module, and ultra-high-definition digital video signals and subtitle display data in the ultra-high-definition digital television signals can be played on the video playing module. With the ultra-high-definition digital television receiver using HEVC adopted, television users can be assisted to watch ultra-high-definition digital television audio and video signals, and at the same time, to watch diversified subtitle information, and therefore, watching demands of the users in various aspects can be satisfied.
Description
The present invention is application number is 201310183439.8, the applying date be May 15, denomination of invention in 2013 is the divisional application of the patent of " the ultra high-definition digital television receiver using the decoding of HEVC video ".
Technical field
The present invention relates to ultra high-definition digital TV field, particularly relate to a kind of ultra high-definition digital television receiver using efficient video coding HEVC video to decode.
Background technology
Ultra high-definition (UltraHigh-Definition), " ultra high-definition UltraHD (UltraHigh-Definition) " that the formal name by " 4K resolution (3840 × 2160 pixel) " ratified from International Telecommunication Union (InternationalTelecommunicationUnion) is decided to be.This title is also applied for " 8K resolution (7680 × 4320 pixel) " simultaneously.And current technical HDTV resolution is the physical resolution of 1920*1080.But thing followed film source capacity is also huge, and the uncompressed video of 18 minutes reaches 3.5TB.What high resolution was brought is exactly incredible fine and smooth display effect, and in play pieces, the camera lens stood high above the masses almost can mirror the overall picture in a city, and each details in camera lens, can see clearly and know Chu.Except resolution, ultra high-definition LCD TV is also a bit worth allowing people note, and its picture element density is up to 103ppi, although this index only has 1/3rd of iPhone4 screen, but high many than the 36ppi of nowadays 60 inches of 1080P TVs.
nullBut，In more existing HDTVs，Resolution is not enough by data compression ratio、The restriction that channel transmission bandwidth is less，Namely allow to design video image and the audio frequency of ultra high-definition resolution，Image such as 15360 × 8640 resolution，The audio signal of the sample rate of every sound channel 48KHz，But owing to compressing not and the restriction of existing channel transmission mode，Cause sending and to receive ultra high-definition digital television signal，And the audio-video signal that resolution can only be selected relatively low is watched，Even if the technology of the video image of ultra high-definition resolution and audio frequency itself has developed into ripe，Additionally，Due in DVB broadcast singal using captions as independent of audio frequency、The certain content of video and propagate，Its reception had certain professional and complexity，Market seldom there is the digital television receiver processed with captions on sale.
Therefore, need the digital television receiver of a kind of ultra high-definition digital television signal, transform original multi-channel transport mechanism, adopt the higher Audio data compression pattern of data compression and video data compression pattern, create conditions for the video image of ultra high-definition resolution and the transmission of audio frequency, adopt terrestrial television channel transmission means simultaneously, even if for the televiewer in mobile traffic, also video content and the audio content of ultra high-definition resolution can be received, and rise and specially the captions in DVB broadcast singal are resolved and decoding process, caption function is added in the digital television receiver of ultra high-definition digital television signal.
Summary of the invention
In order to solve the problems referred to above, the invention provides the digital receiver of a kind of terrestrial channel transmission of ultra high definition digital television signal, adopt spatial audio coding SAC coding that ultra high-definition digital audio and video signals is compressed encoding and decoding, adopt efficient video coding HEVC coding that ultra high-definition digital video signal is compressed encoding and decoding, transformed original terrestrial television channel transmission technology simultaneously, transmission for ultra high-definition TV creates condition, make televiewer can not only receive increasing TV programme, and substantially increase the resolution of the TV programme of reception, sense organ for televiewer provides perfect seeing and hearing enjoyment, additionally, increase special captions processing module in receivers and captions process relief area, allow users to watch various caption information.
According to an aspect of the present invention, provide a kind of ultra high-definition digital television receiver using HEVC video to decode, including reception antenna, audio playing module and video playback module, reception antenna receives ultra high-definition digital television signal, to play the ultra high-definition digital audio and video signals in described ultra high-definition digital television signal in audio playing module, and on video playback module, play the ultra high-definition digital video signal in described ultra high-definition digital television signal and Subtitle Demonstration data.More specifically, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: reception antenna, receive the ultra high-definition digital television signal of transmission in terrestrial channel, it is thus achieved that radiofrequency signal；Down-converted module, connects described reception antenna to receive described radiofrequency signal, described radiofrequency signal is simulated down coversion to be transformed on intermediate frequency, to signal digitized on intermediate frequency, then the signal after digitized is carried out Digital Down Convert；Channel data decoder module, connect described down-converted module to receive the signal after Digital Down Convert, and the signal after the described Digital Down Convert received is sequentially carried out solution OFDM frame, solution data slice, OFDM demodulation process, to obtain the byte after OFDM demodulation processes；Deconvolute interleaving block, connects described channel data decoder module to receive the byte after described OFDM demodulation processes, and described byte carries out the intertexture of deconvoluting that the degree of depth is 12；Error correction decoding module, deconvolute interleaving block to receive the signal after interweaving that deconvolutes described in connection, and the signal after interweaving that deconvolutes is carried out ISN to be reed-solomon RS decoding, outer code is the error correction decoding of low-density checksum LDPC decoding, to obtain the multiple logical data stream after error correction decoding；Output pretreatment module, connects described error correction decoding module to receive the multiple logical data stream after described error correction decoding, and the multiple logical data stream after described error correction decoding is merged into a transport stream TS stream；Demultiplexing module, connect described output pretreatment module to receive the TS stream of described output pretreatment module output, described TS stream is demultiplexed, to obtain audio TS bag, video TS bag and captions TS bag respectively, audio TS bag, video TS bag and captions TS bag have different PID Packet Identifier PID, described PID for the identifier of different types of data bag distribution different value in flowing for the TS after multiplexing；Solve TS bag module, connect described demultiplexing module to receive audio TS bag, video TS bag and captions TS bag, and to audio TS bag, video TS bag and captions TS bag carry out XieTSBao, to obtain audio frequency PES bag respectively, video PES bag and captions PES bag, described PES bag is DTV elementary stream, it is by compressed audio coding data, video compression coding data or captions coded data packet are packed and add that PES packet header is formed, each PES bag includes Presentation Time Stamp PTS, described PTS is for representing the compressed audio coding data in the PES bag of described PTS place, the predetermined reproduction time of video compression coding data or captions coding data；Solve PES bag module, connect described solution TS bag module to receive audio frequency PES bag, video PES bag and captions PES bag, and audio frequency PES bag, video PES bag and captions PES bag are carried out XiePESBao, it is thus achieved that compressed audio coding data and audio frequency PTS, video compression coding data and video PTS, captions coding data and captions PTS；Captions Coded Data Buffer, connect described solution PES bag module to obtain captions coding data and captions PTS, and the identifier according to the page specified stores captions coding data and captions PTS, described page includes combined page and auxiliary page, described combined page includes the captions coding data that captions are exclusive, described auxiliary page includes the captions coding data that different captions share, and the identifier of described page is from captions PES bag；Captions processing module, connect the captions coding data that described captions Coded Data Buffer is required to read composition one display from described captions Coded Data Buffer, the captions coding decoding data that will read, obtain the Subtitle Demonstration data of a display, exporting in Display Register by captions PTS corresponding for captions coding data required with this display of composition for the Subtitle Demonstration data shown, one is shown as the screen captions presented on screen；Display Register, connect described captions processing module and encode, with the captions that the Subtitle Demonstration data obtaining a display are required with this display of composition, the captions PTS that data are corresponding, when current time is captions PTS corresponding to the required captions coding data of this display of composition, the video playback module of described receiver is play the Subtitle Demonstration data of this display, described Display Register is also connected with efficient video coding HEVC decoder module to obtain ultra high-definition digital video signal and video PTS, when current time is video PTS, the video playback module of described receiver is play described ultra high-definition digital video signal；Spatial audio coding SAC decoder module, connects described solution PES bag module to obtain compressed audio coding data and audio frequency PTS, the compressed audio coding data obtained is carried out SAC decoding, to obtain ultra high-definition digital audio and video signals；HEVC decoder module, connect described solution PES bag module to obtain video compression coding data and video PTS, the video compression coding data obtained are carried out HEVC decoding, to obtain ultra high-definition digital video signal, described ultra high-definition digital video signal has three kinds of resolution: 3840 × 2160,7680 × 4320 or 15360 × 8640；Described audio playing module connects described SAC decoder module, to obtain ultra high-definition digital audio and video signals and audio frequency PTS, when current time is audio frequency PTS, plays described ultra high-definition digital audio and video signals；Described video playback module connects described Display Register, with caption playing video data and ultra high-definition digital video signal, Subtitle Demonstration data and ultra high-definition digital video signal for combination display pattern.
More specifically, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: described down-converted module includes digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and by the signal multiplication after the described digitized in the sine and cosine ripple sample value produced and described down-converted module, complete mixing, to obtain the signal of the signal lower frequency after than described digitized.
More specifically, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: the TS stream that described output pretreatment module exports is demultiplexed the also acquisition network information table NIT of business information SI, BAT bouquet association table BAT or service information list SDT by described demultiplexing module, for the parsing of electronic program guide (EPG) information.
More specifically, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: described ultra high-definition digital audio and video signals has the sample rate of every sound channel 44.1KHz, described ultra high-definition digital audio and video signals has 22 sound channels, being arranged as of described 22 sound channels, in the space at hearer place, intermediate layer is provided with 10 sound channels, and bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
What Fig. 1 illustrated according to an embodiment of the present invention uses the block diagram of the ultra high-definition digital television receiver of HEVC video decoding.
Wherein, 1, reception antenna；2, down-converted module；3, channel data decoder module；4, deconvolute interleaving block；5, error correction decoding module；6, output pretreatment module；7, demultiplexing module；8, TS bag module is solved；9, PES bag module is solved；10, captions Coded Data Buffer；11, captions processing module；12, Display Register；13, SAC decoder module；14, HEVC decoder module；15, audio playing module；16, video playback module.
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the ultra high-definition digital television receiver using the decoding of HEVC video of the present invention is described in detail.
Fig. 1 illustrates the block diagram of the ultra high-definition digital television receiver using the decoding of HEVC video illustrated according to an embodiment of the present invention.Wherein said ultra high-definition digital television receiver includes, reception antenna 1, audio playing module 15 and video playback module 16, reception antenna 1 receives ultra high-definition digital television signal, to play the ultra high-definition digital audio and video signals in described ultra high-definition digital television signal in audio playing module 15, and on video playback module 16, play the ultra high-definition digital video signal in described ultra high-definition digital television signal and Subtitle Demonstration data.Further, the described ultra high-definition digital television receiver using the decoding of HEVC video also includes, and reception antenna 1 receives the ultra high-definition digital television signal of transmission in terrestrial channel, it is thus achieved that radiofrequency signal；Down-converted module 2, connects described reception antenna 1 to receive described radiofrequency signal, described radiofrequency signal is simulated down coversion to be transformed on intermediate frequency, to signal digitized on intermediate frequency, then the signal after digitized is carried out Digital Down Convert；Channel data decoder module 3, connect described down-converted module 2 to receive the signal after Digital Down Convert, and the signal after the described Digital Down Convert received is sequentially carried out solution OFDM frame, solution data slice, OFDM demodulation process, to obtain the byte after OFDM demodulation processes；Deconvolute interleaving block 4, connects described channel data decoder module 3 to receive the byte after described OFDM demodulation processes, and described byte carries out the intertexture of deconvoluting that the degree of depth is 12；Error correction decoding module 5, deconvolute interleaving block 4 to receive the signal after interweaving that deconvolutes described in connection, and the signal after interweaving that deconvolutes is carried out ISN to be reed-solomon RS decoding, outer code is the error correction decoding of low-density checksum LDPC decoding, to obtain the multiple logical data stream after error correction decoding；Output pretreatment module 6, connects described error correction decoding module 5 to receive the multiple logical data stream after described error correction decoding, and the multiple logical data stream after described error correction decoding is merged into a transport stream TS stream；Demultiplexing module 7, connect described output pretreatment module 6 to receive the TS stream of described output pretreatment module 6 output, described TS stream is demultiplexed, to obtain audio TS bag, video TS bag and captions TS bag respectively, audio TS bag, video TS bag and captions TS bag have different PID Packet Identifier PID, described PID for the identifier of different types of data bag distribution different value in flowing for the TS after multiplexing；Solve TS bag module 8, connect described demultiplexing module 7 to receive audio TS bag, video TS bag and captions TS bag, and to audio TS bag, video TS bag and captions TS bag carry out XieTSBao, to obtain audio frequency PES bag respectively, video PES bag and captions PES bag, described PES bag is DTV elementary stream, it is by compressed audio coding data, video compression coding data or captions coded data packet are packed and add that PES packet header is formed, each PES bag includes Presentation Time Stamp PTS, described PTS is for representing the compressed audio coding data in the PES bag of described PTS place, the predetermined reproduction time of video compression coding data or captions coding data；Solve PES bag module 9, connect described solution TS bag module 8 to receive audio frequency PES bag, video PES bag and captions PES bag, and audio frequency PES bag, video PES bag and captions PES bag are carried out XiePESBao, it is thus achieved that compressed audio coding data and audio frequency PTS, video compression coding data and video PTS, captions coding data and captions PTS；Captions Coded Data Buffer 10, connect described solution PES bag module 9 to obtain captions coding data and captions PTS, and the identifier according to the page specified stores captions coding data and captions PTS, described page includes combined page and auxiliary page, described combined page includes the captions coding data that captions are exclusive, described auxiliary page includes the captions coding data that different captions share, and the identifier of described page is from captions PES bag；Captions processing module 11, connect the captions coding data that described captions Coded Data Buffer 10 is required to read composition one display from described captions Coded Data Buffer 10, the captions coding decoding data that will read, obtain the Subtitle Demonstration data of a display, captions required to one Subtitle Demonstration data shown and this display of composition encoding captions PTS corresponding to data and exports in Display Register 12, one is shown as the screen captions presented on screen；Display Register 12, connect described captions processing module 11 and encode, with the captions that the Subtitle Demonstration data obtaining a display are required with this display of composition, the captions PTS that data are corresponding, when current time is captions PTS corresponding to the required captions coding data of this display of composition, the video playback module 16 of described receiver is play the Subtitle Demonstration data of this display, described Display Register 12 is also connected with efficient video coding HEVC decoder module 14 to obtain ultra high-definition digital video signal and video PTS, when current time is video PTS, the video playback module 16 of described receiver is play described ultra high-definition digital video signal；Spatial audio coding SAC decoder module 13, connects described solution PES bag module 9 to obtain compressed audio coding data and audio frequency PTS, the compressed audio coding data obtained is carried out SAC decoding, to obtain ultra high-definition digital audio and video signals；HEVC decoder module 14, connect described solution PES bag module 9 to obtain video compression coding data and video PTS, the video compression coding data obtained are carried out HEVC decoding, to obtain ultra high-definition digital video signal, described ultra high-definition digital video signal has three kinds of resolution: 3840 × 2160,7680 × 4320 or 15360 × 8640；Described audio playing module 15 connects described SAC decoder module 13, to obtain ultra high-definition digital audio and video signals and audio frequency PTS, when current time is audio frequency PTS, plays described ultra high-definition digital audio and video signals；Described video playback module 16 connects described Display Register 12, with caption playing video data and ultra high-definition digital video signal, Subtitle Demonstration data and ultra high-definition digital video signal for combination display pattern.
Wherein, as far back as 2004, ITU-T Video Coding Experts group (VCEG) begins one's study new technique to create a new video compression standard.In October, 2004, H.264/AVC potential various technology have been investigated by group.In January, 2005 VCEG meeting on, it is that " key technology " is for further study that VCEG starts to specify some theme.Within 2005, set up software code base and be called that KeyTechnicalAreas (KTA) is used for assessing these new " key technologies ".The software of KTA is to be developed jointly by the video group of MPEG and VCEG on conjunctive model (JM) basis, project name fix tentatively into H.265 with H.NGVC (Next-generationVideoCoding), this project was finally evolved into by VCEG and MPEG joint venture also referred to as HEVC (Highefficiencyvideocoding) in 2010.In January, 2010, VCEG and MPEG starts to initiate video compression technology formal proposal.Correlation technique is combined group (JointCollaborativeTeamonVideoCoding (JCT-VC)) review and assessment by Video coding, and its cooperative groups first session holds conference in April, 2010, and one has 27 complete motions.Evaluation result shows, some motions can reach only H.264/AVC identical with the bit rate of half maintenance visual quality in many test cases.In current meeting, joint project name renames as high efficiency Video coding (HEVC), and JCT-VC group is integrated into software code base and the received text draft specification of correlation technique, and carries out further experiment, to assess various functions.
Wherein, captions refer to the non-visual contents such as the dialogue inside with written form display TV, film, stage works, also refer to the word of films and television programs post-production.The voice content of program is shown in captions mode, it is possible to the spectators helping audition more weak understand programme content.It addition, captions can be used for translation foreign language program, allow the spectators not understanding this foreign language, the vocal cords of original work can be heard, understand programme content simultaneously.The translation of the foreign language dialogue occurred below movie screen or television screen or other explanation word and all words, if the title of film, credits present, libretto, dialogue, declarer are to have personage introduction, place name and age etc..
Wherein, PES stream is DTV elementary stream, in digital TV broadcast signal.Wherein, at signal transmitting terminal, audio frequency, video and other additional datas are carried out data compression through MPEG-2 encoder, form elementary stream, namely ES stream, ES stream is packed into the code stream with packet header again, it is simply that PES (PacketizedElementaryStreams), the elementary stream namely packed.Briefly, PES is ES stream packing, adds what packet header was formed.
Additionally, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: described down-converted module 2 includes digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and by the signal multiplication after the described digitized in the sine and cosine ripple sample value produced and described down-converted module 2, complete mixing, to obtain the signal of the signal lower frequency after than described digitized.
Additionally, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: the TS stream that described output pretreatment module 6 exports is demultiplexed the also acquisition network information table NIT of business information SI, BAT bouquet association table BAT or service information list SDT by described demultiplexing module 7, for the parsing of electronic program guide (EPG) information.
Wherein, EPG is the english abbreviation of ElectronicProgramGuide, is meant to electric program menu.Index and the navigation of the miscellaneous service that digital TV broadcast signal provides all are completed by EPG system.EPG interface generally all provides all kinds of menu, button, link etc. to be available for the assembly that user selects to click directly on during program, the interface of EPG can also comprise all kinds of dynamic or static content of multimedia browsed for user.
Additionally, the described ultra high-definition digital television receiver using the decoding of HEVC video farther includes: described ultra high-definition digital audio and video signals has the sample rate of every sound channel 44.1KHz, described ultra high-definition digital audio and video signals has 22 sound channels, being arranged as of described 22 sound channels, in the space at hearer place, intermediate layer is provided with 10 sound channels, and bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels.
Adopt the ultra high-definition digital television receiver using the decoding of HEVC video of the present invention, for inadequate because of data compression ratio in existing television transmission, the technical problem of multi-channel transport mechanism restriction, ultra high-definition digital audio and video signals and ultra high-definition digital video signal for big data select suitable tool of compression, transform existing terrestrial transmission mechanism to meet the requirement of ultra high-definition digital television signal transmission simultaneously, it is that the TV user including mobile TV spectators receives high-quality, high-resolution audio-video frequency content, thus improve the quality of the life of people, additionally, complicated captions are processed function carry out structure arrangement and add in ultra high-definition digital television receiver, provide the user due captions service in digital television broadcasting.
Although it is understood that the present invention discloses as above with preferred embodiment, but above-described embodiment is not limited to the present invention.For any those of ordinary skill in the art, without departing under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above and technical solution of the present invention is made many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still falls within the scope of technical solution of the present invention protection.
Claims (2)
1. the ultra high-definition digital television receiver using HEVC video to decode, it is characterised in that described receiver includes:
Reception antenna, audio playing module and video playback module, reception antenna receives ultra high-definition digital television signal, to play the ultra high-definition digital audio and video signals in described ultra high-definition digital television signal in audio playing module, and on video playback module, play the ultra high-definition digital video signal in described ultra high-definition digital television signal and Subtitle Demonstration data.
2. the ultra high-definition digital television receiver using the decoding of HEVC video as claimed in claim 1, it is characterised in that also include:
Reception antenna, receives the ultra high-definition digital television signal of transmission in terrestrial channel, it is thus achieved that radiofrequency signal；
Down-converted module, connects described reception antenna to receive described radiofrequency signal, described radiofrequency signal is simulated down coversion to be transformed on intermediate frequency, to signal digitized on intermediate frequency, then the signal after digitized is carried out Digital Down Convert；
Channel data decoder module, connect described down-converted module to receive the signal after Digital Down Convert, and the signal after the described Digital Down Convert received is sequentially carried out solution OFDM frame, solution data slice, OFDM demodulation process, to obtain the byte after OFDM demodulation processes；
Deconvolute interleaving block, connects described channel data decoder module to receive the byte after described OFDM demodulation processes, and described byte carries out the intertexture of deconvoluting that the degree of depth is 12；
Error correction decoding module, deconvolute interleaving block to receive the signal after interweaving that deconvolutes described in connection, and the signal after interweaving that deconvolutes is carried out ISN to be reed-solomon RS decoding, outer code is the error correction decoding of low-density checksum LDPC decoding, to obtain the multiple logical data stream after error correction decoding；
Output pretreatment module, connects described error correction decoding module to receive the multiple logical data stream after described error correction decoding, and the multiple logical data stream after described error correction decoding is merged into a transport stream TS stream；
Demultiplexing module, connect described output pretreatment module to receive the TS stream of described output pretreatment module output, described TS stream is demultiplexed, to obtain audio TS bag, video TS bag and captions TS bag respectively, audio TS bag, video TS bag and captions TS bag have different PID Packet Identifier PID, described PID for the identifier of different types of data bag distribution different value in flowing for the TS after multiplexing；
Solve TS bag module, connect described demultiplexing module to receive audio TS bag, video TS bag and captions TS bag, and to audio TS bag, video TS bag and captions TS bag carry out XieTSBao, to obtain audio frequency PES bag respectively, video PES bag and captions PES bag, described PES bag is DTV elementary stream, it is by compressed audio coding data, video compression coding data or captions coded data packet are packed and add that PES packet header is formed, each PES bag includes Presentation Time Stamp PTS, described PTS is for representing the compressed audio coding data in the PES bag of described PTS place, the predetermined reproduction time of video compression coding data or captions coding data；
Solve PES bag module, connect described solution TS bag module to receive audio frequency PES bag, video PES bag and captions PES bag, and audio frequency PES bag, video PES bag and captions PES bag are carried out XiePESBao, it is thus achieved that compressed audio coding data and audio frequency PTS, video compression coding data and video PTS, captions coding data and captions PTS；
Captions Coded Data Buffer, connect described solution PES bag module to obtain captions coding data and captions PTS, and the identifier according to the page specified stores captions coding data and captions PTS, described page includes combined page and auxiliary page, described combined page includes the captions coding data that captions are exclusive, described auxiliary page includes the captions coding data that different captions share, and the identifier of described page is from captions PES bag；
Captions processing module, connect the captions coding data that described captions Coded Data Buffer is required to read composition one display from described captions Coded Data Buffer, the captions coding decoding data that will read, obtain the Subtitle Demonstration data of a display, exporting in Display Register by captions PTS corresponding for captions coding data required with this display of composition for the Subtitle Demonstration data shown, one is shown as the screen captions presented on screen；
Display Register, connect described captions processing module and encode, with the captions that the Subtitle Demonstration data obtaining a display are required with this display of composition, the captions PTS that data are corresponding, when current time is captions PTS corresponding to the required captions coding data of this display of composition, the video playback module of described receiver is play the Subtitle Demonstration data of this display, described Display Register is also connected with efficient video coding HEVC decoder module to obtain ultra high-definition digital video signal and video PTS, when current time is video PTS, the video playback module of described receiver is play described ultra high-definition digital video signal；
Spatial audio coding SAC decoder module, connects described solution PES bag module to obtain compressed audio coding data and audio frequency PTS, the compressed audio coding data obtained is carried out SAC decoding, to obtain ultra high-definition digital audio and video signals；
HEVC decoder module, connect described solution PES bag module to obtain video compression coding data and video PTS, the video compression coding data obtained are carried out HEVC decoding, to obtain ultra high-definition digital video signal, described ultra high-definition digital video signal has three kinds of resolution: 3840 × 2160,7680 × 4320 or 15360 × 8640；
Described audio playing module connects described SAC decoder module, to obtain ultra high-definition digital audio and video signals and audio frequency PTS, when current time is audio frequency PTS, plays described ultra high-definition digital audio and video signals；
Described video playback module connects described Display Register, with caption playing video data and ultra high-definition digital video signal, Subtitle Demonstration data and ultra high-definition digital video signal for combination display pattern；
Described down-converted module includes digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and by the signal multiplication after the described digitized in the sine and cosine ripple sample value produced and described down-converted module, complete mixing, to obtain the signal of the signal lower frequency after than described digitized；
The TS stream that described output pretreatment module exports is demultiplexed the also acquisition network information table NIT of business information SI, BAT bouquet association table BAT or service information list SDT by described demultiplexing module, for the parsing of electronic program guide (EPG) information.
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