CN103259987B - The emitter of terrestrial channel transmission ultra high-definition digital television signal - Google Patents
The emitter of terrestrial channel transmission ultra high-definition digital television signal Download PDFInfo
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- CN103259987B CN103259987B CN201310170630.9A CN201310170630A CN103259987B CN 103259987 B CN103259987 B CN 103259987B CN 201310170630 A CN201310170630 A CN 201310170630A CN 103259987 B CN103259987 B CN 103259987B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
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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
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
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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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Television Systems (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The present invention relates to a kind of emitter of terrestrial channel transmission ultra high-definition digital television signal, comprise: packaging multiplexing module, input pretreatment module, Error Correction of Coding module, convolutional interleave module, channel processing module, Digital Up Convert processing module, packaging multiplexing module receives ultra high-definition digital video-audio data and packs with multiplexing, input pretreatment module, Error Correction of Coding module, convolutional interleave module, channel processing module, Digital Up Convert processing module connects successively with the transport stream TS stream to the output of packaging multiplexing module inputs pretreatment successively, Error Correction of Coding, convolutional interleave, Channel Processing and Digital Up Convert processing, obtain the required radiofrequency signal of emitter transmission antennas transmit. by the present invention, can use as the transmission of ultra high-definition DAB, ultra high-definition digital video provides suitable channel carrier and compressed encoding instrument, meet the demand of wishing the TV user of watching high-resolution audio-video frequency content.
Description
Technical field
The present invention relates to ultra high-definition digital TV field, relate in particular to a kind of terrestrial channel transmission ultra high-definitionThe emitter of digital television signal.
Background technology
TV is the important tool that the mankind understand the world, recreation, surveillance monitor, TV techIn development, what pursue at the beginning is to obtain as far as possible maximum contents, has therefore occurred DTV generationFor the development trend of simulated television, but, along with scientific and technological development and the raising of people's living standard,People have not met the internal diversified demand of holding, and start to pay close attention to information quality itself, uncommonHope and obtain more and more high-resolution video data and voice data and other data, meet individualDemand on sense organ.
But in more existing HDTVs, resolution ratio is subject to data compression ratio deficiency, transmissionThe restriction that bandwidth is less, allows to design video image and the audio frequency of ultra high-definition resolution ratio, asThe image of 15360 × 8640 resolution ratio, the audio signal of the sample rate of every sound channel 48KHz, but byIn compressing not and the restriction of existing channel transmission mode, causing cannot sending and receiving ultra high-definition numberWord TV signal, and can only select the audio-video signal that resolution ratio is lower to watch, even ultra high-definitionThe video image of resolution ratio and the technology of audio frequency itself are full-fledged.
Therefore, need a kind of emitter of terrestrial channel transmission ultra high-definition digital television signal, transform formerFirst transmission mechanism, adopts higher voice data compact model and the video data of data compressionCompact model for the video image of ultra high-definition resolution ratio and the transmission of audio frequency create conditions, adopts simultaneouslyTerrestrial television transmission mode, even if be the televiewer in mobile traffic, also can provideThe video content of ultra high-definition resolution ratio and audio content.
Summary of the invention
In order to address the above problem, the invention provides a kind of terrestrial channel transmission ultra high-definition DTVThe emitter of signal, adopts spatial audio coding SAC coding to press ultra high-definition digital audio and video signalsReduce the staff code, adopt efficient video coding HEVC coding to compress volume to ultra high-definition digital video signalCode has been transformed original terrestrial television transmission technology simultaneously, for the transmission of ultra high-definition TV is createdCondition, make televiewer can not only receive increasing TV programme, and greatly improvedThe resolution ratio of the TV programme that receive, for televiewer's sense organ provides perfect seeing and hearing enjoyment.
According to an aspect of the present invention, provide a kind of terrestrial channel transmission ultra high-definition digital television signalEmitter, comprise, ultra high-definition DAB acquisition module, ultra high-definition Digital Video collection module,Encode additional data acquisition module, packaging multiplexing module, input pretreatment module, Error Correction of Coding module,Convolutional interleave module, channel processing module, Digital Up Convert processing module, packaging multiplexing module is with superHigh-definition digital audio collection module, ultra high-definition Digital Video collection module, encode additional data are obtained mouldPiece connects to receive respectively audio compressed data, audio compressed data and encode additional data and to beatCladding use, input pretreatment module, Error Correction of Coding module, convolutional interleave module, channel processing module,Digital Up Convert processing module connects successively carries out defeated with the TS stream to the output of packaging multiplexing module successivelyEnter pretreatment, Error Correction of Coding, convolutional interleave, Channel Processing and Digital Up Convert processing, obtain transmittingThe radiofrequency signal that machine transmission antennas transmit is required. More specifically, described terrestrial channel transmission ultra high-definition numberThe emitter of word TV signal further comprises: ultra high-definition DAB acquisition module, gathers ultra high-definitionThe audio signal that the audio-source of 22 sound channels is play, and the audio signal collecting is carried out to modulus successivelyConversion, audio compression coding, output squeezing voice data, being arranged as of described 22 sound channels, is listeningIn the space at person place, intermediate layer is provided with 10 sound channels, and bottom is provided with 3 sound channels, top layerBe provided with 9 sound channels; Ultra high-definition Digital Video collection module, gathers and has used ultra high-definition TV to differentiateThe vision signal that the ultra high-definition video source of rate is play, and the vision signal collecting is carried out to mould successivelyNumber conversion, video compression coding, output squeezing video data; Encode additional data acquisition module, rightAdditional data from additional data source gathers, and the additional data collecting is compressed to volumeCode, the encode additional data after output squeezing coding, described additional data comprises independently data serviceData, also comprise the data relevant with described audio signal, described vision signal; Packaging multiplexing mouldPiece, connect described ultra high-definition DAB acquisition module, described ultra high-definition Digital Video collection module andDescribed encode additional data acquisition module, to the audio compressed data receiving, compressed video data andEncode additional data is carried out respectively TS packing, to obtain respectively audio TS bag, video TS bag and attachedAdd data TS bag, and described audio TS bag, video TS bag and additional data TS bag are answeredWith, obtaining the TS stream after multiplexing, described TS stream has the MPEG-2 frame structure of 188 bytes; DefeatedEnter pretreatment module, connect described packaging multiplexing module to receive described TS stream after multiplexing, and willDescribed TS flow point after multiplexing is slit into multiple logical data stream, exports described multiple logical data stream;Error Correction of Coding module, connects described input pretreatment module, in the logical data stream receiving is adoptedCode is for reed-solomon RS encodes, outer code is the Error Correction of Coding of low-density checksum LDPC codingPattern is carried out Error Correction of Coding; Convolutional interleave module, connects described Error Correction of Coding module, to what receiveIt is 12 convolutional interleave that data flow after Error Correction of Coding is carried out the degree of depth, to obtain the word after convolutional interleaveJoint; Channel processing module, connects described convolutional interleave module, to the word after the convolutional interleave receivingJoint carries out OFDM modulation, data slice generation, the generation of OFDM frame and digital pre-distortion processing successively,Output digital pre-distortion data signal after treatment, generates in processing in data slice, will be through OFDMThe bit stream that modulation obtains is mapped to one group of adjacent OFDM subcarrier using as a data slice; NumberWord upconversion process module, connects described channel processing module, by the digital pre-distortion processing receivingAfter data signal convert analog signal to, to conversion after analog signal carry out Frequency mixing processing with obtainThere is the radiofrequency signal of the centre frequency higher than the centre frequency of the analog signal after described conversion, andThe radiofrequency signal of acquisition is amplified and limiting bandwidth; Transmitting antenna, connects described Digital Up ConvertProcessing module is super with transmitting in terrestrial channel to receive through the radiofrequency signal of amplification and limiting bandwidthDigital TV in high resolution signal; Wherein, the sample rate of the collection of described ultra high-definition DAB acquisition moduleFor every sound channel 44.1KHz, described ultra high-definition DAB acquisition module sound intermediate frequency compressed encoding adoptsBe spatial audio coding SAC coding, ultra high-definition TV resolution has three kinds: 3840 × 2160,7680× 4320 or 15360 × 8640, in described ultra high-definition Digital Video collection module, video compression coding is adoptedBe efficient video coding HEVC coding; Wherein, described audio TS bag, video TS bag andAdditional data TS bag has different PID Packet Identifier PID, and described PID is for the TS for after multiplexingThe different types of data identifier of different value that is responsible for assigning in stream, described TS stream is made up of packet header and load,Described packet header comprises a sync byte SYNC1 and three other bytes, described three other bytesFor traffic identification, scrambling and control information, described load comprises the MPEG-2 data of 184 bytes,Specifically being distributed as of three other bytes in described TS stream packet header, 1 transmission error code indication bit position,1 the initial indication bit of clean data cell position, 1 is transmitted priority bit position, 13 bag identifiersPID bit, 2 are transmitted scrambling control bit position, control bit position, 2 self adaptation districts and 4 companiesContinuous counter bit.
More specifically, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further wrapsDraw together: described channel processing module comprises OFDM modulator, to realize in described channel processing moduleOFDM modulation function, described OFDM modulator comprises and rises sample processing unit, quick FuBefore and after vertical leaf transformation unit, interpolation circulation, sew unit and add window unit, input signal is carried out rising samplingBefore and after processing, FFT conversion, interpolation circulation, sew and windowing process.
More specifically, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further wrapsDraw together: the signal of described emitter transmitting is for comprising the movement of taxi, bus or family carThe reception of the receiver of the terrestrial channel transmission ultra high-definition digital television signal on vehicle.
More specifically, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further wrapsDraw together: described additional data is caption data.
Brief description of the drawings
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
The terrestrial channel transmission ultra high-definition digital television signal that Fig. 1 illustrates according to an embodiment of the present inventionThe block diagram of emitter.
Wherein, 1, ultra high-definition DAB acquisition module; 2, ultra high-definition Digital Video collection module;3, encode additional data acquisition module; 4, packaging multiplexing module; 5, input pretreatment module; 6,Error Correction of Coding module; 7, convolutional interleave module; 8, channel processing module; 9, Digital Up Convert placeReason module; 10, transmitting antenna.
Detailed description of the invention
Sending out terrestrial channel transmission ultra high-definition digital television signal of the present invention below with reference to accompanying drawingsThe embodiment of penetrating machine is elaborated.
Fig. 1 illustrates the terrestrial channel transmission ultra high-definition DTV letter illustrating according to an embodiment of the present inventionNumber the block diagram of emitter. Wherein said emitter comprises, ultra high-definition DAB collection mouldPiece 1, ultra high-definition Digital Video collection module 2, encode additional data acquisition module 3, packaging multiplexing mouldPiece 4, input pretreatment module 5, Error Correction of Coding module 6, convolutional interleave module 7, Channel Processing mouldPiece 8, Digital Up Convert processing module 9, packaging multiplexing module 4 gathers mould with ultra high-definition DABPiece 1, ultra high-definition Digital Video collection module 2, encode additional data acquisition module 3 connect with differenceReceive audio compressed data, audio compressed data and encode additional data and carry out packaging multiplexing, inputPretreatment module 5, Error Correction of Coding module 6, convolutional interleave module 7, channel processing module 8, numeralThe TS stream that upconversion process module 9 connects successively so that packaging multiplexing module 4 is exported carries out defeated successivelyEnter pretreatment, Error Correction of Coding, convolutional interleave, Channel Processing and Digital Up Convert processing, obtain transmittingMachine transmitting antenna 10 is launched required radiofrequency signal. Further, described terrestrial channel transmission superelevationThe emitter of clear digital television signal also comprises, ultra high-definition DAB acquisition module 1 gathers superelevationThe audio signal that the audio-source of clear 22 sound channels is play, and the audio signal collecting is carried out successivelyAnalog-to-digital conversion, audio compression coding, output squeezing voice data, 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,Top layer is provided with 9 sound channels; Ultra high-definition Digital Video collection module 2, gathers and has used ultra high-definition electricityThe vision signal that the ultra high-definition video source of visual resolution is play, and to the vision signal collecting successivelyCarry out analog-to-digital conversion, video compression coding, output squeezing video data; Encode additional data is obtained mouldPiece 3, to gathering from the additional data in additional data source, and enters the additional data collectingRow compressed encoding, the encode additional data after output squeezing coding, described additional data comprises independentlyThe data of data service, also comprise the data relevant with described audio signal, described vision signal; BeatBag Multiplexing module 4, connects described ultra high-definition DAB acquisition module 1, described ultra high-definition numeral is lookedFrequently acquisition module 2 and described encode additional data acquisition module 3, to the audio compressed data receiving,Compressed video data and encode additional data are carried out respectively TS packing, with obtain respectively audio TS bag,Video TS bag and additional data TS bag, and to described audio TS bag, video TS bag and additional numberCarry out multiplexingly according to TS bag, obtain the TS stream after multiplexing, described TS stream has the MPEG-2 of 188 bytesFrame structure; Input pretreatment module 5, connect described packaging multiplexing module 4 with receive described multiplexing afterTS stream, and described TS flow point after multiplexing is slit into multiple logical data stream, export described multipleLogical data stream; Error Correction of Coding module 6, connects described input pretreatment module 5, to what receiveIt is that reed-solomon RS coding, outer code are low-density checksum LDPC that logical data stream adopts ISNThe Error Correction of Coding pattern of coding is carried out Error Correction of Coding; Convolutional interleave module 7, connects described Error Correction of CodingModule 6, it is 12 convolutional interleave that the data flow after the Error Correction of Coding receiving is carried out to the degree of depth, to obtainObtain the byte after convolutional interleave; Channel processing module 8, connects described convolutional interleave module 7, dockingByte after the convolutional interleave of receiving is carried out OFDM modulation, data slice generation, OFDM frame successivelyGenerate and digital pre-distortion processing, output digital pre-distortion data signal after treatment, raw in data sliceIn becoming to process, the bit stream that modulation obtains through OFDM is mapped to one group of adjacent OFDMCarrier wave is using as a data slice; Digital Up Convert processing module 9, connects described channel processing module8, convert the data signal after treatment digital pre-distortion receiving to analog signal, after conversionAnalog signal carry out Frequency mixing processing and have than the center of the analog signal after described conversion frequently to obtainThe radiofrequency signal of the centre frequency that rate is higher, and the radiofrequency signal of acquisition is amplified and check strapWide; Transmitting antenna 10, connects described Digital Up Convert processing module 9 to receive through amplifying and restrictionThe radiofrequency signal of bandwidth to launch ultra high-definition digital television signal in terrestrial channel; Wherein, described superThe sample rate of the collection of high-definition digital audio collection module 1 is every sound channel 44.1KHz, described ultra high-definitionWhat DAB acquisition module 1 sound intermediate frequency compressed encoding adopted is spatial audio coding SAC coding, superHDTV resolution ratio has three kinds: 3840 × 2160,7680 × 4320 or 15360 × 8640, described inThat in ultra high-definition Digital Video collection module 2, video compression coding adopts is efficient video coding HEVCCoding; Wherein, described audio TS bag, video TS bag and additional data TS bag have different bagsIdentifier PID, described PID is responsible for assigning not for different types of data in the TS stream for after multiplexingWith the identifier of value, described TS stream is made up of packet header and load, and described packet header comprises a synchronization characterJoint SYNC1 and three other bytes, described three other bytes are for traffic identification, scrambling and controlInformation processed, described load comprises the MPEG-2 data of 184 bytes, described TS flows three of packet headerSpecifically being distributed as of other bytes, 1 transmission error code indication bit position, 1 clean data cell is initialIndication bit position, 1 is transmitted priority bit position, 13 bag identifier PID bits, 2 biographiesSend scrambling control bit position, control bit position, 2 self adaptation districts and 4 continuous counter bits.
Wherein, resolution ratio (resolution is referred to as again resolution) is exactly the precision of screen picture,Refer to the number of the pixel that display can show. Because point, line and face on screen are all by pixelComposition, the displayable pixel of display is more, and picture is just meticulousr, energy in same screen areaThe information showing is also more, so resolution ratio is one of very important performance indications. Can be wholeIt is a large-scale chessboard that individual image is imagined as, and the expression mode of resolution ratio is exactly all warps and latitudeThe number in line crosspoint.
Wherein, Reed-Solomon, is commonly referred to RS code, is a kind of Linear codes Cyclic Redundancy Code.Data in RS code after coding generally include data message and control information. And information is also in RS codeDo not process with bit position, but process with the sign bit in a code of numerical digit bit composition.Conventionally the length of coded identification is the multiple of 8bits or 8bits. Design is for the ease of same meter like thisWord length in calculation machine is changed mutually. Suppose to comprise I in RS code data bag that a length is NIndividual information symbol, P correction symbol, so can correction of data bag by the decoding processing of RS codeT=P/2 mistake in an interior I information symbol, if know errors present, can correct P mistake.
Wherein, audio sample rate refers to sound pick-up outfit sampling number to voice signal within a second,The sample frequency more reduction of high sound is just more truly more natural. On current main flow capture card, samplingFrequency is generally divided into 22.05KHz, 44.1KHz, 48KHz Three Estate, and 22.05KHz can onlyThe sound quality that reaches FM broadcast, 44.1KHz is theoretic CD Quality boundary, 48KHzMore accurate. Cannot distinguish out institute for the sample frequency people's ear higher than 48KHzWith few of use value on computers.
Wherein, LDPC code be low density parity check code (LowDensityParityCheckCode,LDPC), he is that the class being proposed in 1963 by doctor RobertG.Gallager has sparse verificationThe linear block codes of matrix, not only has the superperformance of approaching Shannon limit, and decoding complexityLower, flexible structure, is the study hotspot of field of channel coding in recent years, has been widely used at present darkThe fields such as empty communication, fiber optic communication, satellite digital video and audio broadcasting. LDPC code has becomeThe four strong competitors of generation communication system (4G), and encoding scheme based on LDPC code by underGeneration satellite digital video broadcast standard DVB-S2 adopts.
In addition, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further comprises:Described channel processing module 8 comprises OFDM modulator, to realize described channel processing module 8In OFDM modulation function, described OFDM modulator comprises and rises sample processing unit, fastBefore and after Fourier transformation unit, interpolation circulation, sew unit and add window unit, input signal is risen and adoptedBefore and after sample processing, FFT conversion, interpolation circulation, sew and windowing process.
Wherein, OFDM (OrthogonalFrequencyDivisionMultiplexing) is orthogonal frequencyDivide multiplex technique, in fact OFDM is MCMMulti-CarrierModulation, multi-carrier modulationOne, its main thought is: channel is divided into some orthogonal sub-channels, high-speed data signal is turnedChange parallel low speed sub data flow into, be modulated on every sub-channels and transmit. Orthogonal signalling canWith by adopting correlation technique to separate at receiving terminal, can reduce like this mutually doing between subchannelDisturb ICI. Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, therefore every sub-channelsOn can regard flatness decline as, thereby can eliminate intersymbol interference. And due to every height letterThe bandwidth in road is only the sub-fraction of former channel width, and it is relatively easy that channel equalization becomes.
In addition, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further comprises:The signal of described emitter transmitting is for comprising the moving vehicle of taxi, bus or family carOn the reception of receiver of terrestrial channel transmission ultra high-definition digital television signal.
In addition, the emitter of described terrestrial channel transmission ultra high-definition digital television signal further comprises:Described additional data is caption data. At television reception end, caption data and video data can be enteredThe overlapping demonstration of row, for TV user provides as contents such as emergency alarm, guide, advertisements, to meet electricityDepending on the various needs of operator.
Adopt the emitter of terrestrial channel transmission ultra high-definition digital television signal of the present invention, for existingIn television transmission, because data compression ratio is inadequate, the technical problem of the machine-processed restriction of transmission, be large numberAccording to ultra high-definition digital audio and video signals and ultra high-definition digital video signal select suitable tool of compression, withTime transform existing terrestrial transmission mechanism to meet the requirement of ultra high-definition digital television signal transmission, be bagThe TV user of drawing together mobile TV spectators provides high-quality, high-resolution audio-video frequency content, thereby carriesHigh people's quality of the life.
Be understandable that, although the present invention disclose as above with preferred embodiment, but above-mentioned enforcementExample is not in order to limit the present invention. For any those of ordinary skill in the art, do not departing fromIn technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement to the technology of the present inventionScheme is made many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations. Therefore,Every content that does not depart from technical solution of the present invention, foundation technical spirit of the present invention is to above embodimentAny simple modification, equivalent variations and the modification done, all still belong to technical solution of the present invention protectionIn scope.
Claims (4)
1. an emitter for terrestrial channel transmission ultra high-definition digital television signal, is characterized in that,Described emitter comprises:
Ultra high-definition DAB acquisition module, ultra high-definition Digital Video collection module, encode additional dataAcquisition module, packaging multiplexing module, input pretreatment module, Error Correction of Coding module, convolutional interleave mouldPiece, channel processing module, Digital Up Convert processing module, packaging multiplexing module and ultra high-definition numeral soundFrequently acquisition module, ultra high-definition Digital Video collection module, encode additional data acquisition module connect to divideDo not receive audio compressed data, audio compressed data and encode additional data and carry out packaging multiplexing, defeatedEnter in pretreatment module, Error Correction of Coding module, convolutional interleave module, channel processing module, numeral and becomeFrequently processing module connect successively with the TS stream to the output of packaging multiplexing module input successively pretreatment,Error Correction of Coding, convolutional interleave, Channel Processing and Digital Up Convert processing, obtain emitter transmitting antennaLaunch required radiofrequency signal;
Ultra high-definition DAB acquisition module, the sound that the audio-source of collection ultra high-definition 22 sound channels is playFrequently signal, and the audio signal collecting is carried out to analog-to-digital conversion, audio compression coding, output successivelyAudio compressed data, being arranged as of described 22 sound channels, in the space at hearer place, establish in intermediate layerPut 10 sound channels, bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels;
Ultra high-definition Digital Video collection module, gathers and has used the ultra high-definition of ultra high-definition TV resolution to lookFrequently the vision signal that play in source, and the vision signal collecting is carried out to analog-to-digital conversion, video successivelyCompressed encoding, output squeezing video data;
Encode additional data acquisition module, to gathering from the additional data in additional data source, andThe additional data collecting is carried out to compressed encoding, the encode additional data after output squeezing coding, instituteState the data that additional data comprises independently data service, also comprise with described audio signal, described in lookFrequently the relevant data of signal;
Packaging multiplexing module, connects described ultra high-definition DAB acquisition module, described ultra high-definition numeralVideo acquisition module and described encode additional data acquisition module, to the audio compressed data receiving,Compressed video data and encode additional data are carried out respectively transport stream TS packing, to obtain respectively audio frequencyTS bag, video TS bag and additional data TS bag, and to described audio TS bag, video TS bag andIt is multiplexing that additional data TS bag carries out, and obtains the TS stream after multiplexing, and described TS stream has 188 bytesMPEG-2 frame structure;
Input pretreatment module, connects described packaging multiplexing module to receive described TS stream after multiplexing,And described TS flow point after multiplexing is slit into multiple logical data stream, export described multiple logical dataStream;
Error Correction of Coding module, connects described input pretreatment module, and the logical data stream receiving is adoptedBe that reed-solomon RS coding, outer code are the error correction of low-density checksum LDPC coding with ISNCoding mode carries out Error Correction of Coding;
Convolutional interleave module, connects described Error Correction of Coding module, to the number after the Error Correction of Coding receivingCarrying out the degree of depth according to stream is 12 convolutional interleave, to obtain the byte after convolutional interleave;
Channel processing module, connects described convolutional interleave module, to the word after the convolutional interleave receivingJoint carries out OFDM modulation, data slice generation, the generation of OFDM frame and digital pre-distortion processing successively,Output digital pre-distortion data signal after treatment, generates in processing in data slice, will be through OFDMThe bit stream that modulation obtains is mapped to one group of adjacent OFDM subcarrier using as a data slice;
Digital Up Convert processing module, connects described channel processing module, and the numeral receiving is lost in advanceData signal very after treatment converts analog signal to, and the analog signal after conversion is carried out to Frequency mixing processingTo obtain the radio frequency with the centre frequency higher than the centre frequency of the analog signal after described conversionSignal, and the radiofrequency signal of acquisition is amplified and limiting bandwidth;
Transmitting antenna, connects described Digital Up Convert processing module to receive through amplifying and limiting bandwidthRadiofrequency signal to launch ultra high-definition digital television signal in terrestrial channel;
Wherein, the sample rate of the collection of described ultra high-definition DAB acquisition module is every sound channel44.1KHz, what described ultra high-definition DAB acquisition module sound intermediate frequency compressed encoding adopted is space soundThe SAC that frequently encodes encodes, and ultra high-definition TV resolution has three kinds: 3840 × 2160,7680 × 4320Or 15360 × 8640, what in described ultra high-definition Digital Video collection module, video compression coding adopted isEfficient video coding HEVC coding;
Wherein, described audio TS bag, video TS bag and additional data TS bag have different bag marksKnow symbol PID, described PID is for the difference that is responsible for assigning of different types of data in the TS stream for after multiplexingThe identifier of value, described TS stream is made up of packet header and load, and described packet header comprises a sync byteSYNC1 and three other bytes, described three other bytes are for traffic identification, scrambling and control letterBreath, described load comprises the MPEG-2 data of 184 bytes, three of described TS stream packet header otherSpecifically being distributed as of byte, 1 transmission error code indication bit position, 1 initial instruction of clean data cellBit, 1 is transmitted priority bit position, 13 bag identifier PID bits, 2 transmission addDisturb control bit position, control bit position, 2 self adaptation districts and 4 continuous counter bits.
2. the emitter of terrestrial channel transmission ultra high-definition digital television signal as claimed in claim 1,It is characterized in that: described channel processing module comprises OFDM modulator, to realize described channel placeThe OFDM modulation function of reason in module, described OFDM modulator comprise rise sample processing unit,Before and after fast Fourier transform unit, interpolation circulation, sew unit and add window unit, input signal is carried outBefore and after rising sampling processing, FFT conversion, interpolation circulation, sew and windowing process.
3. the emitter of terrestrial channel transmission ultra high-definition digital television signal as claimed in claim 1,It is characterized in that: the signal of described emitter transmitting is used for comprising taxi, bus or family expenses vapourThe reception of the receiver of the terrestrial channel transmission ultra high-definition digital television signal on the moving vehicle of car.
4. the emitter of terrestrial channel transmission ultra high-definition digital television signal as claimed in claim 1,It is characterized in that: described additional data is caption data.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610222596.9A CN105847872A (en) | 2013-05-09 | 2013-05-09 | Ultra-high definition digital television signal emitter capable of increasing television program's resolutions |
| CN201310170630.9A CN103259987B (en) | 2013-05-09 | 2013-05-09 | The emitter of terrestrial channel transmission ultra high-definition digital television signal |
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| CN201310170630.9A CN103259987B (en) | 2013-05-09 | 2013-05-09 | The emitter of terrestrial channel transmission ultra high-definition digital television signal |
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| CN201610222596.9A Division CN105847872A (en) | 2013-05-09 | 2013-05-09 | Ultra-high definition digital television signal emitter capable of increasing television program's resolutions |
| CN201610221955.9A Division CN105791896A (en) | 2013-05-09 | 2013-05-09 | Ultrahigh-definition digital television signal transmitter on mobile vehicle |
| CN201610222673.0A Division CN105763888A (en) | 2013-05-09 | 2013-05-09 | Ultra high definition digital television signal transmitter capable of improving television program resolution |
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| CN103259987A CN103259987A (en) | 2013-08-21 |
| CN103259987B true CN103259987B (en) | 2016-05-11 |
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| CN105744275B (en) * | 2016-02-22 | 2019-04-05 | 青岛海信电器股份有限公司 | A kind of input of video data, output method and device |
| CN105933342A (en) * | 2016-06-24 | 2016-09-07 | 浙江宇视科技有限公司 | Video monitoring data transmission method and device |
| CN109218760B (en) * | 2018-10-19 | 2021-04-02 | 广州珠江数码集团股份有限公司 | Method and device for modulating large-code-rate program |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454194A (en) * | 2007-10-30 | 2009-05-06 | Sony Corp | Address generation polynomial and permutation matrix for DVB-T2 1k OFDM sub-carrier mode interleaver |
| CN102449947A (en) * | 2009-06-26 | 2012-05-09 | Wi-Lan有限公司 | Universal transmitter and receiver for the international television bands |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6151296A (en) * | 1997-06-19 | 2000-11-21 | Qualcomm Incorporated | Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals |
| KR20040035297A (en) * | 2002-10-19 | 2004-04-29 | 삼성전자주식회사 | Apparatus and method for transmission of digital broadcasting system having the composition error correction coding function |
| CN1312929C (en) * | 2004-04-01 | 2007-04-25 | 清华大学 | Single-frequency network system of ground digital TV broadcast and its realizing method |
| KR101165379B1 (en) * | 2004-07-15 | 2012-07-17 | 삼성전자주식회사 | Digital broadcasting transmission/reception system having improved receiving performance and signal processing method thereof |
| US8527855B2 (en) * | 2004-08-16 | 2013-09-03 | Koninklijke Philips N.V. | Interleaving and parsing for MIMO-OFDM systems |
| CN100571068C (en) * | 2005-08-18 | 2009-12-16 | 北京泰美世纪科技有限公司 | Digital broadcasting satellite system and information transferring method, error correction coding system and method |
| KR101191181B1 (en) * | 2005-09-27 | 2012-10-15 | 엘지전자 주식회사 | Transmitting/receiving system of digital broadcasting and data structure |
-
2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2454194A (en) * | 2007-10-30 | 2009-05-06 | Sony Corp | Address generation polynomial and permutation matrix for DVB-T2 1k OFDM sub-carrier mode interleaver |
| CN102449947A (en) * | 2009-06-26 | 2012-05-09 | Wi-Lan有限公司 | Universal transmitter and receiver for the international television bands |
Non-Patent Citations (2)
| Title |
|---|
| DVB-T系统的研究与实现;张健;《万方学位论文》;20110818;第14-28页 * |
| 基于FPGA平台的DVB-T发射端的实现;张拥军等;《电视技术》;20041130(第11期);第63页第3段 * |
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