CN103237240A - Digital set top box capable of processing terrestrial channel transmission ultra-high definition digital television signal - Google Patents
Digital set top box capable of processing terrestrial channel transmission ultra-high definition digital television signal Download PDFInfo
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Abstract
The invention relates to a digital set top box capable of processing a terrestrial channel transmission ultra-high definition digital television signal. The digital set top box comprises a receiving antenna, a down-conversion processing module, a source data decoding module, a convolutional interleaving removal module, an error correcting and decoding module, an output preprocessing module, a demultiplexing module and a TS (transport stream) unpacking module which are sequentially connected and is used for respectively carrying out radio frequency signal receiving, down-conversion processing, source date decoding, convolutional interleaving removal, error correction and decoding, output preprocessing, demultiplexing and TS unpacking processing on the received terrestrial channel transmission ultra-high definition digital television signal to obtain an ultra-high definition digital audio signal, an ultra-high definition digital video signal and additional-data coded data for playing ultra-high definition audio and video contents. By the digital set top box, a suitable channel carrier and a suitable compressed encoding tool can be provided for transmitting an ultra-high definition digital audio and an ultra-high definition digital video and the requirements of television subscribers who hope to watch high-definition audio and video contents are met.
Description
Technical field
The present invention relates to the ultra high-definition digital TV field, relate in particular to a kind of top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal.
Background technology
TV is the human important tool of understanding the world, recreation, surveillance monitor, in the development of TV tech, what pursue at the beginning is to obtain maximum contents as far as possible, therefore the development trend that Digital Television replacement simulated television occurred, yet, raising along with development of science and technology and people's living standard, people have not satisfied the internal diversified demand of holding, begin to pay close attention to information quality itself, namely wish to obtain more and more high-resolution video data and voice data and other data, satisfy the demand on the individual sense organ.
But, in more existing HDTV (High-Definition Television), resolution is subjected to the data compression ratio deficiency, the restriction that the channel transmission bandwidth is less, namely allow to design video image and the audio frequency of ultra high-definition resolution, image as 15360 * 8640 resolution, the audio signal of the sample rate of every sound channel 48KHz, but because compression is not enough and the restriction of existing channel transmission mode, cause to send and to receive the ultra high-definition digital television signal, and can only select the lower audio-video signal of resolution to watch, even the technology of the video image of ultra high-definition resolution and audio frequency itself is full-fledged.
Therefore, the top box of digital machine that needs a kind of terrestrial channel transmission ultra high-definition digital television signal, transform original channel transmission mechanism, adopt higher voice data compact model and the video data compression pattern of data compression ratio, for the video image of ultra high-definition resolution and the transmission of audio frequency create conditions, adopt terrestrial television channel transmission means simultaneously, even be the televiewer in mobile traffic, also can receive video content and the audio content of ultra high-definition resolution.
Summary of the invention
In order to address the above problem, the invention provides a kind of top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal, adopt spatial audio coding SAC coding that the ultra high-definition digital audio and video signals is carried out compression coding and decoding, adopt efficient video coding HEVC coding that the ultra high-definition digital video signal is carried out compression coding and decoding, transformed original terrestrial television channel transmission technology simultaneously, for condition has been created in the transmission of ultra high-definition TV, make the televiewer can not only receive increasing TV programme, and improved the resolution of the TV programme that receives greatly, for televiewer's sense organ provides perfect seeing and hearing enjoyment.
According to an aspect of the present invention, a kind of top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal is provided, comprise, the reception antenna of Lian Jieing successively, the down-converted module, information source data decoder module, interleaving block deconvolutes, the error correction decoding module, the output pretreatment module, demultiplexing module is conciliate TS bag module, receive respectively the terrestrial channel transmission ultra high-definition digital television signal that receives is carried out radiofrequency signal, down-converted, the information source data decode, deconvolute and interweave, error correction decoding, the output preliminary treatment, demultiplexing is conciliate the TS bag and is handled acquisition ultra high-definition digital audio and video signals, ultra high-definition digital video signal and additional data coded data are to be used for the broadcast of ultra high-definition audio-video frequency content.
More specifically, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: reception antenna, be received in the ultra high-definition digital television signal that transmits in the terrestrial channel, and obtain radiofrequency signal; The down-converted module connects described reception antenna to receive described radiofrequency signal, and described radiofrequency signal is carried out analog down to be transformed on the intermediate frequency, to signal digitalized, then the signal after the digitlization is carried out Digital Down Convert on intermediate frequency; Information source data decoder module, connect described down-converted module to receive the signal after the Digital Down Convert, and to the signal after the described Digital Down Convert that receives separate the OFDM frame successively, separate data slice, the OFDM demodulation process, to obtain the byte after the OFDM demodulation process; The interleaving block that deconvolutes connects described information source data decoder module receiving the byte after the described OFDM demodulation process, and described byte is carried out the degree of depth is 12 deconvolute and interweave; The error correction decoding module, connect the described interleaving block that deconvolutes with deconvolute signal after interweaving of reception, and the signal after interweaving to deconvoluting to carry out ISN be that reed-solomon RS decoding, outer sign indicating number are for the error correction decoding of low-density checksum LDPC decoding, with a plurality of logical data stream behind the acquisition error correction decoding; The output pretreatment module connects described error correction decoding module receiving a plurality of logical data stream behind the described error correction decoding, and a plurality of logical data stream behind the 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, TS stream to described output pretreatment module output carries out demultiplexing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is the be responsible for assigning identifier of different value of different types of data in the stream of the TS after multiplexing; Separate TS bag module, connect described demultiplexing module to receive described audio TS bag, video TS bag and additional data TS, and described audio TS bag, video TS bag and additional data TS carried out XieTSBao, to obtain audio compressed data, compressed video data and additional data coded data respectively; Spatial audio coding SAC decoder module, connect described solution TS bag module to obtain audio compressed data, the audio compressed data that obtains is carried out the SAC decoding, and to obtain the ultra high-definition digital audio and video signals, 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, the intermediate layer is provided with 10 sound channels, bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels; Efficient video coding HEVC decoder module, connect described solution TS bag module to obtain compressed video data, the compressed video data that obtains is carried out the HEVC decoding, to obtain the 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; The additional data decoder module, connect described solution TS bag module to receive described additional data coded data, and described additional data coded data decoded, to obtain digitized additional data, described additional data comprises the data of independently data service, also comprises the data relevant with described digital audio and video signals, described digital video signal; Audio playing module connects described SAC decoder module to receive and to play the ultra high-definition digital audio and video signals of described SAC decoder module output; The video playback module, connect described HEVC decoder module, additional data decoder module receiving described ultra high-definition digital video signal and described digitized additional data respectively, and described ultra high-definition digital video signal and described digitized additional data are made up broadcast in LCDs; Wherein, described down-converted module comprises digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and with the sine and cosine ripple sample value of generation and the signal multiplication after the described digitlization in the described down-converted module, finish mixing, to obtain than the more low-frequency signal of the signal after the described digitlization.
More specifically, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: described additional data is caption data, and the captions image of described caption data correspondence overlaps in described video playback module on the image of described ultra high-definition digital video signal correspondence to show.
More specifically, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: 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 bytes are used for 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 net amount is according to initial indication bit position, unit, 1 is transmitted the priority bit position, 13 bag identifier PID bits, 2 are transmitted scrambling control bit position, control bit position, 2 self adaptation districts and 4 continuous counter bits.
More specifically, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: described top box of digital machine is installed on the moving vehicle that comprises taxi, bus or family car.
Description of drawings
Below with reference to accompanying drawing embodiment of the present invention are described, wherein:
The block diagram of the top box of digital machine of the terrestrial channel transmission ultra high-definition digital television signal that Fig. 1 illustrates according to an embodiment of the present invention.
Wherein, 1, reception antenna; 2, down-converted module; 3, information source data decoder module; 4, the interleaving block that deconvolutes; 5, error correction decoding module; 6, output pretreatment module; 7, demultiplexing module; 8, separate TS bag module; 9, SAC decoder module; 10, HEVC decoder module; 11, additional data decoder module; 12, audio playing module; 13, video playback module.
Embodiment
Embodiment to the top box of digital machine of terrestrial channel of the present invention transmission ultra high-definition digital television signal is elaborated below with reference to accompanying drawings.
Fig. 1 illustrates the block diagram of the top box of digital machine of the terrestrial channel transmission ultra high-definition digital television signal that illustrates according to an embodiment of the present invention.Wherein said top box of digital machine comprises, the reception antenna 1 of Lian Jieing successively, down-converted module 2, information source data decoder module 3, interleaving block 4 deconvolutes, error correction decoding module 5, output pretreatment module 6, demultiplexing module 7 is conciliate TS bag module 8, receive respectively the terrestrial channel transmission ultra high-definition digital television signal that receives is carried out radiofrequency signal, down-converted, the information source data decode, deconvolute and interweave, error correction decoding, the output preliminary treatment, demultiplexing is conciliate the TS bag and is handled acquisition ultra high-definition digital audio and video signals, ultra high-definition digital video signal and additional data coded data are to be used for the broadcast of ultra high-definition audio-video frequency content.Further, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal comprises that also reception antenna 1 is received in the ultra high-definition digital television signal that transmits in the terrestrial channel, obtains radiofrequency signal; Down-converted module 2 connects described reception antenna 1 to receive described radiofrequency signal, and described radiofrequency signal is carried out analog down to be transformed on the intermediate frequency, to signal digitalized, then the signal after the digitlization is carried out Digital Down Convert on intermediate frequency; Information source data decoder module 3, connect described down-converted module 2 to receive the signal after the Digital Down Convert, and to the signal after the described Digital Down Convert that receives separate the OFDM frame successively, separate data slice, the OFDM demodulation process, to obtain the byte after the OFDM demodulation process; The interleaving block 4 that deconvolutes connects described information source data decoder module 3 receiving the byte after the described OFDM demodulation process, and described byte is carried out the degree of depth is 12 deconvolute and interweave; Error correction decoding module 5, connect the described interleaving block 4 that deconvolutes with deconvolute signal after interweaving of reception, and the signal after interweaving to deconvoluting to carry out ISN be that reed-solomon RS decoding, outer sign indicating number are for the error correction decoding of low-density checksum LDPC decoding, with a plurality of logical data stream behind the acquisition error correction decoding; Output pretreatment module 6 connects described error correction decoding module 5 receiving a plurality of logical data stream behind the described error correction decoding, and a plurality of logical data stream behind the 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 outputs, TS stream to described output pretreatment module 6 outputs carries out demultiplexing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is the be responsible for assigning identifier of different value of different types of data in the stream of the TS after multiplexing; Separate TS bag module 8, connect described demultiplexing module 7 to receive described audio TS bag, video TS bag and additional data TS, and described audio TS bag, video TS bag and additional data TS carried out XieTSBao, to obtain audio compressed data, compressed video data and additional data coded data respectively; Spatial audio coding SAC decoder module 9, connect described solution TS bag module 8 to obtain audio compressed data, the audio compressed data that obtains is carried out the SAC decoding, and to obtain the ultra high-definition digital audio and video signals, 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, the intermediate layer is provided with 10 sound channels, bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels; Efficient video coding HEVC decoder module 10, connect described solution TS bag module 8 to obtain compressed video data, the compressed video data that obtains is carried out the HEVC decoding, to obtain the 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; Additional data decoder module 11, connect described solution TS bag module 8 to receive described additional data coded data, and described additional data coded data decoded, to obtain digitized additional data, described additional data comprises the data of independently data service, also comprises the data relevant with described digital audio and video signals, described digital video signal; Audio playing module 12 connects described SAC decoder module 9 to receive and to play the ultra high-definition digital audio and video signals of described SAC decoder module 9 outputs; Video playback module 13, connect described HEVC decoder module 10, additional data decoder module 11 receiving described ultra high-definition digital video signal and described digitized additional data respectively, and described ultra high-definition digital video signal and described digitized additional data are made up broadcast in LCDs; Wherein, described down-converted module 2 comprises digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and with the sine and cosine ripple sample value of generation and the signal multiplication after the described digitlization in the described down-converted module 2, finish mixing, to obtain than the more low-frequency signal of the signal after the described digitlization.
Wherein, resolution (resolution is referred to as resolution again) is exactly the precision of screen picture, and pixel that display can show what refer to.Because point, line and face on the screen all are made up of pixel, the displayable pixel of display is more many, and picture is just more meticulous, and the information that can show in the same screen area is also more many, so resolution is one of very important performance index.Can be imagined as entire image is a large-scale chessboard, and the expression mode of resolution is exactly the number in all warps and parallel crosspoint.
Wherein, Reed-Solomon is commonly referred to the RS sign indicating number, is a kind of linear grouping cyclic redundancy code.Data in the RS sign indicating number behind the coding generally include data message and control information.And information is not to handle with the bit position in the RS sign indicating number, but handles with the sign bit that numerical digit bit forms in the sign indicating number.Usually the length of coded identification is the multiple of 8bits or 8bits.Design is for the ease of changing mutually with the word length in the computer like this.Suppose to comprise I information symbol in the RS code data bag that a length is N, P correction symbol, so by the decoding of RS sign indicating number handle can the correction of data bag in t=P/2 mistake in I information symbol, if know errors present, then can correct P mistake.
Wherein, audio sample rate refers to sound pick-up outfit sampling number to voice signal in a second, and the sample frequency more reduction of high sound is just more true more natural.On current main flow capture card, sample frequency generally is divided into and is that 22.05KHz, 44.1KHz, 48KHz Three Estate, 22.05KHz can only reach the sound quality of FM broadcasting, and 44.1KHz then is theoretic CD Quality boundary, and 48KHz is then accurate more.Can't distinguish out for the sample frequency people's ear that is higher than 48KHz, so few of use value on computers.
Wherein, the LDPC sign indicating number is low density parity check code (Low Density Parity Check Code, LDPC), he has sparse parity check matrix by the class that Robert doctor G.Gallager proposed in 1963, the superperformance of approaching the Shannon limit is not only arranged, and decoding complexity is lower, structure is flexible, be the research focus of field of channel coding in recent years, be widely used in fields such as deep space communication, optical fiber communication, satellite digital video and audio broadcasting at present.The LDPC sign indicating number has become the 4th strong competitor of generation communication system (4G), and is adopted by satellite digital video broadcast standard DVB-S2 of future generation based on the encoding scheme of LDPC sign indicating number.
Wherein, OFDM(Orthogonal Frequency Division Multiplexing) be orthogonal frequency division multiplexi, in fact OFDM is MCM Multi-CarrierModulation, multi-carrier modulation a kind of, its main thought is: channel is divided into some orthogonal sub-channels, convert high-speed data signal to parallel low speed sub data flow, be modulated at each subchannel and transmit.Orthogonal signalling can separately can be reduced the phase mutual interference ICI between the subchannel like this by adopt correlation technique at receiving terminal.Signal bandwidth on each subchannel is less than the correlation bandwidth of channel, so can regard the flatness decline as on each subchannel, thereby can eliminate intersymbol interference.And because the bandwidth of each subchannel only is the sub-fraction of former channel width, it is relatively easy that channel equalization becomes.
In addition, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: described additional data is caption data, and the captions image of described caption data correspondence overlaps in described video playback module 13 on the image of described ultra high-definition digital video signal correspondence to show.
In addition, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: 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 bytes are used for 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 net amount is according to initial indication bit position, unit, 1 is transmitted the priority bit position, 13 bag identifier PID bits, 2 are transmitted scrambling control bit position, control bit position, 2 self adaptation districts and 4 continuous counter bits.
Wherein, the full name of TS then is Transport Stream.MPEG2-PS is mainly used in the fixedly program of duration that has of storage, and as the DVD film, MPEG-TS then is mainly used in the program of real-time transmission, such as the TV programme of broadcasting in real time.The main distinction of these two kinds of forms is, if the front one of the vob file on the DVD is cut (perhaps simply being exactly corrupted data), will cause whole file to decode so, and TV programme is whenever to turn on television set can both decode (watching), so to be exactly requirement begin all can independently decode from arbitrary fragment of video flowing the characteristics of MPEG2-TS form.
In addition, the top box of digital machine of described terrestrial channel transmission ultra high-definition digital television signal further comprises: described top box of digital machine is installed on the moving vehicle that comprises taxi, bus or family car.Like this, make that the receiving mode of TV is not to face fixedly to watch the user, but face the televiewer that mobility is stronger, the audient is wider.
Adopt the top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal of the present invention, at technical problem not enough because of data compression ratio in the existing television transmission, the restriction of channel transmission mechanism, for ultra high-definition digital audio and video signals and the ultra high-definition digital video signal of big data are selected the proper compression instrument, transform existing terrestrial transmission mechanism simultaneously to satisfy the requirement of ultra high-definition digital television signal transmission, be that the TV user that comprises the mobile TV spectators receives high-quality, high-resolution audio-video frequency content, thereby improved people's quality of the life.
Be understandable that though the present invention with the preferred embodiment disclosure as above, yet above-described embodiment is not in order to limit the present invention.For any those of ordinary skill in the art, do not breaking away under the technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all still belongs in the scope of technical solution of the present invention protection.
Claims (5)
1. the top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal is characterized in that described top box of digital machine comprises:
The reception antenna of Lian Jieing successively, the down-converted module, information source data decoder module, interleaving block deconvolutes, the error correction decoding module, the output pretreatment module, demultiplexing module is conciliate TS bag module, receive respectively the terrestrial channel transmission ultra high-definition digital television signal that receives is carried out radiofrequency signal, down-converted, the information source data decode, deconvolute and interweave, error correction decoding, the output preliminary treatment, demultiplexing is conciliate the TS bag and is handled acquisition ultra high-definition digital audio and video signals, ultra high-definition digital video signal and additional data coded data are to be used for the broadcast of ultra high-definition audio-video frequency content.
2. the top box of digital machine of terrestrial channel transmission ultra high-definition digital television signal as claimed in claim 1 is characterized in that, further comprises:
Reception antenna is received in the ultra high-definition digital television signal that transmits in the terrestrial channel, obtains radiofrequency signal;
The down-converted module connects described reception antenna to receive described radiofrequency signal, and described radiofrequency signal is carried out analog down to be transformed on the intermediate frequency, to signal digitalized, then the signal after the digitlization is carried out Digital Down Convert on intermediate frequency;
Information source data decoder module, connect described down-converted module to receive the signal after the Digital Down Convert, and to the signal after the described Digital Down Convert that receives separate the OFDM frame successively, separate data slice, the OFDM demodulation process, to obtain the byte after the OFDM demodulation process;
The interleaving block that deconvolutes connects described information source data decoder module receiving the byte after the described OFDM demodulation process, and described byte is carried out the degree of depth is 12 deconvolute and interweave;
The error correction decoding module, connect the described interleaving block that deconvolutes with deconvolute signal after interweaving of reception, and the signal after interweaving to deconvoluting to carry out ISN be that reed-solomon RS decoding, outer sign indicating number are for the error correction decoding of low-density checksum LDPC decoding, with a plurality of logical data stream behind the acquisition error correction decoding;
The output pretreatment module connects described error correction decoding module receiving a plurality of logical data stream behind the described error correction decoding, and a plurality of logical data stream behind the 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, TS stream to described output pretreatment module output carries out demultiplexing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is the be responsible for assigning identifier of different value of different types of data in the stream of the TS after multiplexing;
Separate TS bag module, connect described demultiplexing module to receive described audio TS bag, video TS bag and additional data TS, and described audio TS bag, video TS bag and additional data TS carried out XieTSBao, to obtain audio compressed data, compressed video data and additional data coded data respectively;
Spatial audio coding SAC decoder module, connect described solution TS bag module to obtain audio compressed data, the audio compressed data that obtains is carried out the SAC decoding, and to obtain the ultra high-definition digital audio and video signals, 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, the intermediate layer is provided with 10 sound channels, bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels;
Efficient video coding HEVC decoder module, connect described solution TS bag module to obtain compressed video data, the compressed video data that obtains is carried out the HEVC decoding, to obtain the 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;
The additional data decoder module, connect described solution TS bag module to receive described additional data coded data, and described additional data coded data decoded, to obtain digitized additional data, described additional data comprises the data of independently data service, also comprises the data relevant with described digital audio and video signals, described digital video signal;
Audio playing module connects described SAC decoder module to receive and to play the ultra high-definition digital audio and video signals of described SAC decoder module output;
The video playback module, connect described HEVC decoder module, additional data decoder module receiving described ultra high-definition digital video signal and described digitized additional data respectively, and described ultra high-definition digital video signal and described digitized additional data are made up broadcast in LCDs;
Wherein, described down-converted module comprises digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and with the sine and cosine ripple sample value of generation and the signal multiplication after the described digitlization in the described down-converted module, finish mixing, to obtain than the more low-frequency signal of the signal after the described digitlization.
3. terrestrial channel as claimed in claim 2 transmits the top box of digital machine of ultra high-definition digital television signal, it is characterized in that:
Described additional data is caption data, and the captions image of described caption data correspondence overlaps in described video playback module on the image of described ultra high-definition digital video signal correspondence to show.
4. terrestrial channel as claimed in claim 2 transmits the top box of digital machine of ultra high-definition digital television signal, it is characterized in that:
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 bytes are used for 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 net amount is according to initial indication bit position, unit, 1 is transmitted the priority bit position, 13 bag identifier PID bits, 2 are transmitted scrambling control bit position, control bit position, 2 self adaptation districts and 4 continuous counter bits.
5. terrestrial channel as claimed in claim 2 transmits the top box of digital machine of ultra high-definition digital television signal, it is characterized in that:
Described top box of digital machine is installed on the moving vehicle that comprises taxi, bus or family car.
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| CN103702164A (en) * | 2014-01-07 | 2014-04-02 | 深圳创维－Rgb电子有限公司 | UHD (Ultra High Definition) signal transferring device and network STB (Set Top Box) |
| CN104935957A (en) * | 2015-06-03 | 2015-09-23 | 北京永新视博信息技术有限公司 | Terminal system, 4k cloud platform and play system for playing 4k video |
| CN106341710A (en) * | 2016-09-18 | 2017-01-18 | 珠海迈科智能科技股份有限公司 | Set top box supporting VR technology |
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