CN105763888A - Ultra high definition digital television signal transmitter capable of improving television program resolution - Google Patents
Ultra high definition digital television signal transmitter capable of improving television program resolution Download PDFInfo
- Publication number
- CN105763888A CN105763888A CN201610222673.0A CN201610222673A CN105763888A CN 105763888 A CN105763888 A CN 105763888A CN 201610222673 A CN201610222673 A CN 201610222673A CN 105763888 A CN105763888 A CN 105763888A
- Authority
- CN
- China
- Prior art keywords
- module
- ultra high
- coding
- data
- video
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04N21/23614—Multiplexing of additional data and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—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
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention relates to an ultra high definition digital television signal transmitter capable of improving a television program resolution. The ultra high definition digital television signal transmitter comprises a packing and reusing module, an input preprocessing module, an error correction coding module, a convolutional interleave module, a channel processing module and a digital upward frequency conversion processing module, wherein the packing and reusing module is used for receiving, packaging and reusing ultra high definition digital video and audio data; the input preprocessing module, the error correction coding module, the convolutional interleave module, the channel processing module and the digital upward frequency conversion processing module are orderly connected so as to orderly subject a transport stream TS stream output by the packaging and reusing module to input preprocessing operation, error correction coding operation, convolutional interleave operation, channel processing operation and digital upward frequency conversion operation; thus radiofrequency signals needed by transmitting antennas of the transmitter can be obtained. Via the ultra high definition digital television signal transmitter, suitable channel carriers and compression encoding tools can be provided for ultra high definition digital video and audio transmission, and demand of television users for high resolution audio and video content can be met.
Description
Technical field
The present invention relates to ultra high-definition digital TV field, particularly relate to the transmitter of a kind of terrestrial channel transmission of ultra high definition digital television signal.
Background technology
TV is the important tool that the mankind understand the world, recreation, surveillance monitor, in the development of TV tech, what pursue at the beginning is obtain maximum contents as far as possible, therefore occur in that DTV replaces the development trend of simulated television, but, raising along with scientific and technological development and people's living standard, people have been unsatisfactory for the diversified demand to content, begin to focus on information quality itself, namely wish to obtain more and more high-resolution video data and voice data and other data, meet the demand on individual's sense organ.
But, 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.
Therefore, need the transmitter of a kind of terrestrial channel transmission 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, be also provided that video content and the audio content of ultra high-definition resolution.
Summary of the invention
In order to solve the problems referred to above, the invention provides the transmitter 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 coding, adopt efficient video coding HEVC coding that ultra high-definition digital video signal is compressed coding, 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.
nullAccording to an aspect of the present invention，Provide the transmitter of a kind of terrestrial channel transmission of ultra high definition digital television signal，Including，Ultra high-definition digital audio capture module、Ultra high-definition Digital Video collection module、Coding 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 and ultra high-definition digital audio capture module、Ultra high-definition Digital Video collection module、Coding additional data acquisition module connects to receive compression voice data respectively、Compress voice data and coding additional data and carry out packaging multiplexing，Input pretreatment module、Error Correction of Coding module、Convolutional interleave module、Channel processing module、Digital Up Convert processing module is sequentially connected with and is sequentially carried out input pretreatment with the transport stream TS stream that packaging multiplexing module is exported、Error Correction of Coding、Convolutional interleave、Channel Processing and numeral upconversion process，Obtain transmitter transmitting antenna and launch required radiofrequency signal.
The method of work of the transmitter of described terrestrial channel transmission of ultra high definition digital television signal, including: ultra high-definition digital audio capture module, gather the audio signal that the audio-source of ultra high-definition 22 sound channel is play, and the audio signal collected is sequentially carried out analog digital conversion, compressed audio 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, and top layer is provided with 9 sound channels；Ultra high-definition Digital Video collection module, gathers and employs the video signal that the ultra high-definition video source of ultra high-definition TV resolution is play, and the video signal collected is sequentially carried out analog digital conversion, video compression coding, output squeezing video data；Coding additional data acquisition module, additional data from additional data source is acquired, and the additional data collected is compressed coding, coding additional data after output squeezing coding, described additional data includes the data of independent data service, also includes the data relevant with described audio signal, described video signal；Packaging multiplexing module, connect described ultra high-definition digital audio capture module, described ultra high-definition Digital Video collection module and described coding additional data acquisition module, the compression voice data received, compressed video data and coding additional data are transmitted respectively stream TS packing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, and described audio TS bag, video TS bag and additional data TS bag are carried out multiplexing, obtaining the TS stream after multiplexing, described TS stream has the MPEG-2 frame structure of 188 bytes；Input pretreatment module, connects described packaging multiplexing module to receive the transport stream TS stream after described multiplexing, and the transport stream TS flow point after described multiplexing is slit into multiple logical data stream, export the plurality of logical data stream；Error Correction of Coding module, connects described input pretreatment module, and it is that reed-solomon RS encodes, outer code is that the low-density checksum LDPC Error Correction of Coding pattern encoded carries out Error Correction of Coding that the logical data stream received adopts ISN；Convolutional interleave module, connects described Error Correction of Coding module, and the data stream after the Error Correction of Coding received is carried out the convolutional interleave that the degree of depth is 12, to obtain the byte after convolutional interleave；Channel processing module, connect described convolutional interleave module, byte after the convolutional interleave received is sequentially carried out OFDM modulation, data slice generates, OFDM frame generates and numeral pre-distortion, digital signal after output digital pre-distortion process, in data slice generation processes, the bit stream obtained through OFDM modulation is mapped to OFDM subcarrier one group adjacent using as a data slice；Digital Up Convert processing module, connect described channel processing module, digital signal after being processed by the digital pre-distortion received converts analogue signal to, analogue signal after conversion is carried out Frequency mixing processing to obtain the radiofrequency signal of the higher mid frequency of the mid frequency with the analogue signal after than described conversion, and the radiofrequency signal of acquisition is amplified and limits bandwidth；Transmitting antenna, connects described Digital Up Convert processing module and passes through the radiofrequency signal amplifying and limiting bandwidth to launch ultra high-definition digital television signal in terrestrial channel to receive；Wherein, the sample rate of the collection of described ultra high-definition digital audio capture module is every sound channel 44.1KHz, what described ultra high-definition digital audio capture module sound intermediate frequency compressed encoding adopted is spatial audio coding SAC coding, ultra high-definition TV resolution has three kinds: 3840 × 2160,7680 × 4320 or 15360 × 8640, and what in described ultra high-definition Digital Video collection module, video compression coding adopted is efficient video coding HEVC coding；nullWherein，Described audio TS bag、Video TS bag and additional data TS bag have different PID Packet Identifier PID，Described PID be used to the TS after for multiplexing stream in different types of data bag distribution different value identifier，Described TS stream is made up of packet header and load，Described packet header includes a sync byte SYNC1 and three other bytes，Described three other bytes are used for traffic identification、Scrambling and the information of control，Described load includes the MPEG-2 data of 184 bytes，Described TS flows specifically being distributed as of three other bytes in packet header，1 transmission error code indication bit position，1 initial indication bit position of clean data cell，1 is transmitted priority bit position，13 bag identifier PID bits，2 are transmitted scrambling control bits position，Control bit position, 2 self adaptation districts and 4 continuous counter bits.
Further: described channel processing module includes OFDM manipulator, to realize the OFDM modulation function in described channel processing module, described OFDM manipulator includes sewing unit and windowing unit before and after a liter employing processing unit, fast Fourier transform unit, interpolation circulation, carries out input signal sewing and windowing process before and after a liter sampling processing, fast fourier transform conversion, interpolation circulation.
Further: the reception of the receiver of the signal that described transmitter is launched terrestrial channel transmission of ultra high definition digital television signal on the mobile vehicle including taxi, bus or family car.
Further: described additional data is caption data.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
The block diagram of the transmitter of the terrestrial channel transmission of ultra high definition digital television signal that Fig. 1 illustrates according to an embodiment of the present invention.
Wherein, 1, ultra high-definition digital audio capture module；2, ultra high-definition Digital Video collection module；3, coding 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 processing module；10, transmitting antenna.
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the transmitter of the terrestrial channel transmission of ultra high definition digital television signal of the present invention is described in detail.
Fig. 1 illustrates the block diagram of the transmitter of the terrestrial channel transmission of ultra high definition digital television signal illustrated according to an embodiment of the present invention.nullWherein said transmitter includes，Ultra high-definition digital audio capture module 1、Ultra high-definition Digital Video collection module 2、Coding additional data acquisition module 3、Packaging multiplexing module 4、Input pretreatment module 5、Error Correction of Coding module 6、Convolutional interleave module 7、Channel processing module 8、Digital Up Convert processing module 9，Packaging multiplexing module 4 and ultra high-definition digital audio capture module 1、Ultra high-definition Digital Video collection module 2、Coding additional data acquisition module 3 connects to receive compression voice data respectively、Compress voice data and coding additional data and carry out packaging multiplexing，Input pretreatment module 5、Error Correction of Coding module 6、Convolutional interleave module 7、Channel processing module 8、Digital Up Convert processing module 9 is sequentially connected with and is sequentially carried out input pretreatment with the transport stream TS stream that packaging multiplexing module 4 is exported、Error Correction of Coding、Convolutional interleave、Channel Processing and numeral upconversion process，Obtain transmitter transmitting antenna 10 and launch required radiofrequency signal.Further, the transmitter of described terrestrial channel transmission of ultra high definition digital television signal also includes, ultra high-definition digital audio capture module 1, gathers the audio signal that the audio-source of ultra high-definition 22 sound channel is play, and the audio signal collected is sequentially carried out analog digital conversion, compressed audio 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, bottom is provided with 3 sound channels, and top layer is provided with 9 sound channels；Ultra high-definition Digital Video collection module 2, gathers and employs the video signal that the ultra high-definition video source of ultra high-definition TV resolution is play, and the video signal collected is sequentially carried out analog digital conversion, video compression coding, output squeezing video data；Coding additional data acquisition module 3, additional data from additional data source is acquired, and the additional data collected is compressed coding, coding additional data after output squeezing coding, described additional data includes the data of independent data service, also includes the data relevant with described audio signal, described video signal；Packaging multiplexing module 4, connect described ultra high-definition digital audio capture module 1, described ultra high-definition Digital Video collection module 2 and described coding additional data acquisition module 3, the compression voice data received, compressed video data and coding additional data are transmitted respectively stream TS packing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, and described audio TS bag, video TS bag and additional data TS bag are carried out multiplexing, obtaining the TS stream after multiplexing, described TS stream has the MPEG-2 frame structure of 188 bytes；Input pretreatment module 5, connects described packaging multiplexing module 4 to receive the transport stream TS stream after described multiplexing, and the transport stream TS flow point after described multiplexing is slit into multiple logical data stream, export the plurality of logical data stream；Error Correction of Coding module 6, connects described input pretreatment module 5, and it is that reed-solomon RS encodes, outer code is that the low-density checksum LDPC Error Correction of Coding pattern encoded carries out Error Correction of Coding that the logical data stream received adopts ISN；Convolutional interleave module 7, connects described Error Correction of Coding module 6, and the data stream after the Error Correction of Coding received is carried out the convolutional interleave that the degree of depth is 12, to obtain the byte after convolutional interleave；Channel processing module 8, connect described convolutional interleave module 7, byte after the convolutional interleave received is sequentially carried out OFDM modulation, data slice generates, OFDM frame generates and numeral pre-distortion, digital signal after output digital pre-distortion process, in data slice generation processes, the bit stream obtained through OFDM modulation is mapped to OFDM subcarrier one group adjacent using as a data slice；Digital Up Convert processing module 9, connect described channel processing module 8, digital signal after being processed by the digital pre-distortion received converts analogue signal to, analogue signal after conversion is carried out Frequency mixing processing to obtain the radiofrequency signal of the higher mid frequency of the mid frequency with the analogue signal after than described conversion, and the radiofrequency signal of acquisition is amplified and limits bandwidth；Transmitting antenna 10, connects described Digital Up Convert processing module 9 and passes through the radiofrequency signal amplifying and limiting bandwidth to launch ultra high-definition digital television signal in terrestrial channel to receive；Wherein, the sample rate of the collection of described ultra high-definition digital audio capture module 1 is every sound channel 44.1KHz, what described ultra high-definition digital audio capture module 1 sound intermediate frequency compressed encoding adopted is spatial audio coding SAC coding, ultra high-definition TV resolution has three kinds: 3840 × 2160,7680 × 4320 or 15360 × 8640, and what in described ultra high-definition Digital Video collection module 2, video compression coding adopted is efficient video coding HEVC coding；nullWherein，Described audio TS bag、Video TS bag and additional data TS bag have different PID Packet Identifier PID，Described PID be used to the TS after for multiplexing stream in different types of data bag distribution different value identifier，Described TS stream is made up of packet header and load，Described packet header includes a sync byte SYNC1 and three other bytes，Described three other bytes are used for traffic identification、Scrambling and the information of control，Described load includes the MPEG-2 data of 184 bytes，Described TS flows specifically being distributed as of three other bytes in packet header，1 transmission error code indication bit position，1 initial indication bit position of clean data cell，1 is transmitted priority bit position，13 bag identifier PID bits，2 are transmitted scrambling control bits position，Control bit position, 2 self adaptation districts and 4 continuous counter bits.
Wherein, resolution (resolution, also referred to as resolution) is exactly the precision of screen picture, refers to the number of the pixel that display can show.Owing to the point on screen, line dough-making powder are all made up of pixel, the displayable pixel of display is more many, and picture is more fine, and the information that can show in same screen area is also more many, so resolution is one of very important performance indications.Whole image can be imagined as is a large-scale chessboard, and the representation of resolution is exactly all warps and the number in parallel cross point.
Wherein, Reed-Solomon, it is commonly referred to RS code, is a kind of Linear codes Cyclic Redundancy Code.In RS code, the data after coding generally include data message and control information.And information is not carry out processing with bit position in RS code, but process with the numerical digit bit sign bit formed in a code.The length of usual coded identification is the multiple of 8bits or 8bits.So design is to change mutually for the ease of the word length in same computer.Assume the RS code packet that length is N comprises I information symbol, P correction symbol, then by t=P/2 the mistake that the decoding process of RS code can be corrected in packet in I information symbol, if it is known that errors present, then can correct P mistake.
Wherein, audio sample rate refers to sound pick-up outfit sampling number to acoustical signal in a second, and the reduction of sample frequency more high sound is more true more natural.On current main flow capture card, sample frequency is generally divided into 22.05KHz, 44.1KHz, 48KHz Three Estate, and 22.05KHz can only achieve the sound quality of FM broadcast, and 44.1KHz is then theoretic CD Quality boundary, and 48KHz is then more accurate.Cannot be discernable for the sample frequency human ear higher than 48KHz, so few of use value on computers.
Wherein, LDPC code and low density parity check code (LowDensityParityCheckCode, LDPC), he is the linear block codes in the class that 1963 propose by doctor RobertG.Gallager with sparse check matrix, do not only have the superperformance approaching Shannon limit, and decoding complexity is relatively low, flexible structure, it is the study hotspot of field of channel coding in recent years, is widely used to the fields such as deep space communication, fiber optic communication, satellite digital video and audio broadcasting at present.LDPC code has become forth generation communication system (4G) strong competitor, and the encoding scheme based on LDPC code is adopted by satellite digital video broadcast standard DVB-S2 of future generation.
Additionally, the transmitter of described terrestrial channel transmission of ultra high definition digital television signal farther includes: described channel processing module 8 includes OFDM manipulator, to realize the OFDM modulation function in described channel processing module 8, described OFDM manipulator includes sewing unit and windowing unit before and after a liter employing processing unit, fast Fourier transform unit, interpolation circulation, carries out input signal sewing and windowing process before and after a liter sampling processing, fast fourier transform conversion, interpolation circulation.
Wherein, OFDM(OrthogonalFrequencyDivisionMultiplexing) i.e. orthogonal frequency division multiplexi, actually OFDM is MCMMulti-CarrierModulation, the one of multi-carrier modulation, its main thought is: break a channel into some orthogonal sub-channels, high-speed data signal converts to parallel low speed sub data flow, and modulation is to being transmitted on each of the sub-channels.Orthogonal signalling by adopting correlation technique to separate at receiving terminal, so can reduce interfering ICI between sub-channel.Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, and therefore the flatness of can regarding as on every sub-channels declines, such that it is able to eliminate intersymbol interference.And owing to the bandwidth of every sub-channels is only the sub-fraction of former channel width, channel equalization becomes relatively easy.
It addition, the transmitter of described terrestrial channel transmission of ultra high definition digital television signal farther includes: the reception of the receiver of the signal that described transmitter is launched terrestrial channel transmission of ultra high definition digital television signal on the mobile vehicle including taxi, bus or family car.
It addition, the transmitter of described terrestrial channel transmission of ultra high definition digital television signal farther includes: described additional data is caption data.At television reception end, it is possible to caption data and video data to be carried out overlapping display, provide such as contents such as emergency alarm, guide, advertisements for TV user, to meet the various needs of television operator.
Adopt the transmitter of the terrestrial channel transmission of ultra high definition digital television signal of the present invention, for technical problem inadequate because of data compression ratio in existing television transmission, 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, TV user for including mobile TV spectators provides high-quality, high-resolution audio-video frequency content, thus improve the quality of the life of people.
Claims (1)
- null1. the method for work of the transmitter of a terrestrial channel transmission of ultra high definition digital television signal，It is characterized in that，Described transmitter includes: ultra high-definition digital audio capture module、Ultra high-definition Digital Video collection module、Coding 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 and ultra high-definition digital audio capture module、Ultra high-definition Digital Video collection module、Coding additional data acquisition module connects to receive compression voice data respectively、Compress voice data and coding additional data and carry out packaging multiplexing，Input pretreatment module、Error Correction of Coding module、Convolutional interleave module、Channel processing module、Digital Up Convert processing module is sequentially connected with and is sequentially carried out input pretreatment with the transport stream TS stream that packaging multiplexing module is exported、Error Correction of Coding、Convolutional interleave、Channel Processing and numeral upconversion process，Obtain transmitter transmitting antenna and launch required radiofrequency signal；Described method of work, including:Ultra high-definition digital audio capture module, gather the audio signal that the audio-source of ultra high-definition 22 sound channel is play, and the audio signal collected is sequentially carried out analog digital conversion, compressed audio 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, 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 employs the video signal that the ultra high-definition video source of ultra high-definition TV resolution is play, and the video signal collected is sequentially carried out analog digital conversion, video compression coding, output squeezing video data；Coding additional data acquisition module, additional data from additional data source is acquired, and the additional data collected is compressed coding, coding additional data after output squeezing coding, described additional data includes the data of independent data service, also includes the data relevant with described audio signal, described video signal；Packaging multiplexing module, connect described ultra high-definition digital audio capture module, described ultra high-definition Digital Video collection module and described coding additional data acquisition module, the compression voice data received, compressed video data and coding additional data are transmitted respectively stream TS packing, to obtain audio TS bag, video TS bag and additional data TS bag respectively, and described audio TS bag, video TS bag and additional data TS bag are carried out multiplexing, obtaining the TS stream after multiplexing, described TS stream has the MPEG-2 frame structure of 188 bytes；Input pretreatment module, connects described packaging multiplexing module to receive the transport stream TS stream after described multiplexing, and the transport stream TS flow point after described multiplexing is slit into multiple logical data stream, export the plurality of logical data stream；Error Correction of Coding module, connects described input pretreatment module, and it is that reed-solomon RS encodes, outer code is that the low-density checksum LDPC Error Correction of Coding pattern encoded carries out Error Correction of Coding that the logical data stream received adopts ISN；Convolutional interleave module, connects described Error Correction of Coding module, and the data stream after the Error Correction of Coding received is carried out the convolutional interleave that the degree of depth is 12, to obtain the byte after convolutional interleave；Channel processing module, connect described convolutional interleave module, byte after the convolutional interleave received is sequentially carried out OFDM modulation, data slice generates, OFDM frame generates and numeral pre-distortion, digital signal after output digital pre-distortion process, in data slice generation processes, the bit stream obtained through OFDM modulation is mapped to OFDM subcarrier one group adjacent using as a data slice；Digital Up Convert processing module, connect described channel processing module, digital signal after being processed by the digital pre-distortion received converts analogue signal to, analogue signal after conversion is carried out Frequency mixing processing to obtain the radiofrequency signal of the higher mid frequency of the mid frequency with the analogue signal after than described conversion, and the radiofrequency signal of acquisition is amplified and limits bandwidth；Transmitting antenna, connects described Digital Up Convert processing module and passes through the radiofrequency signal amplifying and limiting bandwidth to launch ultra high-definition digital television signal in terrestrial channel to receive；nullWherein，Described audio TS bag、Video TS bag and additional data TS bag have different PID Packet Identifier PID，Described PID be used to the TS after for multiplexing stream in different types of data bag distribution different value identifier，Described TS stream is made up of packet header and load，Described packet header includes a sync byte SYNC1 and three other bytes，Described three other bytes are used for traffic identification、Scrambling and the information of control，Described load includes the MPEG-2 data of 184 bytes，Described TS flows specifically being distributed as of three other bytes in packet header，1 transmission error code indication bit position，1 initial indication bit position of clean data cell，1 is transmitted priority bit position，13 bag identifier PID bits，2 are transmitted scrambling control bits position，Control bit position, 2 self adaptation districts and 4 continuous counter bits；The reception of the receiver of the signal that described transmitter is launched terrestrial channel transmission of ultra high definition digital television signal on the mobile vehicle including taxi, bus or family car；Described additional data is caption data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222673.0A CN105763888A (en) | 2013-05-09 | 2013-05-09 | Ultra high definition digital television signal transmitter capable of improving television program resolution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610222673.0A CN105763888A (en) | 2013-05-09 | 2013-05-09 | Ultra high definition digital television signal transmitter capable of improving television program resolution |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310170630.9A Division CN103259987B (en) | 2013-05-09 | 2013-05-09 | The emitter of terrestrial channel transmission ultra high-definition digital television signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105763888A true CN105763888A (en) | 2016-07-13 |
Family
ID=56334617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610222673.0A Pending CN105763888A (en) | 2013-05-09 | 2013-05-09 | Ultra high definition digital television signal transmitter capable of improving television program resolution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105763888A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066946A (en) * | 1991-03-27 | 1992-12-09 | 松下电器产业株式会社 | Transmitting device |
| CN1491032A (en) * | 2002-10-19 | 2004-04-21 | 三星电子株式会社 | Transmitter for digital broadcasting system with comprehensive error correcting coding function and method thereof |
| WO2004086661A1 (en) * | 2003-03-26 | 2004-10-07 | Matsushita Electric Industrial Co., Ltd. | Ofdm transmitting method, transmitter, and receiver |
| CN1917399A (en) * | 2005-08-18 | 2007-02-21 | 北京泰美世纪科技有限公司 | Digital broadcasting satellite system, and information transmission method, error correction coding system and method |
| CN101682739A (en) * | 2007-11-22 | 2010-03-24 | 索尼株式会社 | Signal transmission device, signal transmission method, signal reception device, and signal reception method |
-
2013
- 2013-05-09 CN CN201610222673.0A patent/CN105763888A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066946A (en) * | 1991-03-27 | 1992-12-09 | 松下电器产业株式会社 | Transmitting device |
| CN1491032A (en) * | 2002-10-19 | 2004-04-21 | 三星电子株式会社 | Transmitter for digital broadcasting system with comprehensive error correcting coding function and method thereof |
| WO2004086661A1 (en) * | 2003-03-26 | 2004-10-07 | Matsushita Electric Industrial Co., Ltd. | Ofdm transmitting method, transmitter, and receiver |
| CN1917399A (en) * | 2005-08-18 | 2007-02-21 | 北京泰美世纪科技有限公司 | Digital broadcasting satellite system, and information transmission method, error correction coding system and method |
| CN101682739A (en) * | 2007-11-22 | 2010-03-24 | 索尼株式会社 | Signal transmission device, signal transmission method, signal reception device, and signal reception method |
Non-Patent Citations (1)
| Title |
|---|
| 彭莉莉: "DVB-T中的编码调制和MIMO技术的应用", 《中国优秀博硕士学位论文全文数据库》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101821215B1 (en) | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |
| US10952035B2 (en) | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals | |
| US11570494B2 (en) | Broadcast signal transmitting apparatus, broadcast signal receiving apparatus, method for transmitting broadcast signal, and method for receiving broadcast signal | |
| CN111600669B (en) | Transmission device, transmission method, reception device, and reception method | |
| US11368757B2 (en) | Service guide information transmission method, service guide information reception method, service guide information transmission device, and service guide information reception device | |
| US20070286103A1 (en) | System and method for digital communication having puncture cycle based multiplexing scheme with unequal error protection (UEP) | |
| CN1863285A (en) | Device for implementing one set-top-box to support multi-television sets | |
| WO2005034521A1 (en) | Digital television transmission with error correction | |
| CN103259987B (en) | The emitter of terrestrial channel transmission ultra high-definition digital television signal | |
| CN101444101A (en) | System and method for digital communications using multiple parallel encoders | |
| CN103237240A (en) | Digital set top box capable of processing terrestrial channel transmission ultra-high definition digital television signal | |
| KR102278520B1 (en) | Apparatus and method for transmitting and receiving signaling information in digital broadcast system | |
| CN203313334U (en) | Digital set-top box of ground channel transmission super high-definition digital television signals | |
| CN105763888A (en) | Ultra high definition digital television signal transmitter capable of improving television program resolution | |
| CN105791896A (en) | Ultrahigh-definition digital television signal transmitter on mobile vehicle | |
| WO2020026558A1 (en) | Receiving device, communication system, and control method for receiving device | |
| CN103888210A (en) | Transmission of multimedia streams to mobile devices with uncoded transport tunneling | |
| CN102625192B (en) | System and method of video play | |
| CN104580835A (en) | Private cinema decoding monitoring device | |
| KR20090004632A (en) | Digital broadcasting transmitter and receiver, and methods for processing streams thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160713 |
|
| RJ01 | Rejection of invention patent application after publication |