CN103237242B - The DVB-T receiver of vehicle-mounted MIMO-type - Google Patents
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Abstract
The present invention relates to a kind of Digital Television Terrestrial Broadcasting DVB-T receiver of vehicle-mounted multiple-input and multiple-output MIMO-type, comprise: two reception antennas, down-converted module, channel data decoder module, demultiplexing module conciliates TS bag module, described two reception antennas, down-converted module, channel data decoder module, demultiplexing module is conciliate TS bag module and is connected successively, to carry out rf signal reception to the DVB-T signal of the MIMO-type transmitted in DVB-T channel received respectively, down-converted, channel data is decoded, demultiplexing conciliates TS bag, obtain compressed audio coding data, video compression coding data and additional data coded data are for the broadcasting of audio-video frequency content.By the present invention, MIMO technology can be used to provide the signal quality of vehicle-mounted digital television Signal reception, overcome the technical problem because the vehicle-mounted Received signal strength caused is weak, television-quality is poor.
Description
Technical field
The present invention relates to in-car TV and receive field, particularly relate to a kind of Digital Television Terrestrial Broadcasting DVB-T receiver of vehicle-mounted multiple-input and multiple-output MIMO-type.
Background technology
Moving vehicle is the important carrier of information, especially for public transport.Some amusement media companies are in order to expand advertising business, sight line is transferred on the moving vehicle comprising taxi, bus, using these moving vehicles as the carrier of advertising message, thus create high economic benefit for amusement media companies and government utility operator both sides, for the people of ride-on vehicles, this operation mode also brings benefit, free time boring when can dismiss ride-on vehicles, can obtain again the merchandise news self needed.Therefore killing three birds with one stone.
Along with the development of information technology and TV tech, amusement media companies has been not content with the fixing media information that only concern is posted on moving vehicle, and bring into use in-car TV to carry out large-scale INFORMATION BOMB, this has benefited from the realization of DTB Digital Terrestrial Broadcasting DVB-T communications.But, owing to comprising taxi, the moving vehicle of bus itself has that translational speed is fast, the unfixed characteristic in position, there will be the situation in the place moved to away from launching centre, due to the decline of signal, the problem that Received signal strength is very weak, television-quality is poor can be caused, have impact on the normal play of information.
Therefore, need a kind of DVB-T receiver of vehicle-mounted MIMO-type, adopt multiple-input and multiple-output MIMO technology, two antennas are provided to carry out the transmission of signal at transmitter terminal, there is provided two antennas to carry out the reception of signal at receiver end, thus construct multiaerial system, overcome the phenomenon of multipath fading, improve the reception of TV signal, ensure the advertising results of the Ads on Vehicles that the amusement media companies carrying out Ads on Vehicles business releases.
Summary of the invention
In order to solve the problem, the invention provides a kind of DVB-T receiver of vehicle-mounted MIMO-type, two antennas are used to receive the radiofrequency signal of MIMO-type, and carry out separating OFDM frame, OFDM demodulation, 16QAM demodulation, the anti-Bit Interleave of matrix sub-clustering spiral intertexture and the Turbo decoding process of 1/2 code check to the radiofrequency signal received, to obtain the transport stream TS stream that can parse audio-video frequency content, original single-shot list is replaced to receive pattern with two two receipts patterns, improve the stability of receive channel, thus ensure the quality of reception of TV signal.
According to an aspect of the present invention, provide a kind of DVB-T receiver of vehicle-mounted MIMO-type, comprise, two reception antennas, down-converted module, channel data decoder module, demultiplexing module conciliates TS bag module, described two reception antennas, down-converted module, channel data decoder module, demultiplexing module is conciliate TS bag module and is connected successively, to carry out rf signal reception to the DVB-T signal of the MIMO-type transmitted in DVB-T channel received respectively, down-converted, channel data is decoded, demultiplexing conciliates TS bag, obtain compressed audio coding data, video compression coding data and additional data coded data are for the broadcasting of audio-video frequency content.
More specifically, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: two reception antennas, is received in the DVB-T signal of the MIMO-type transmitted in DVB-T channel, obtains radiofrequency signal, down-converted module, connect described two reception antennas to receive described radiofrequency signal, described radiofrequency signal is carried out analog down to be transformed on intermediate frequency, to signal digital on intermediate frequency, then Digital Down Convert is carried out to the signal after digitlization, process in described Digital Down Convert processing module is two-way process, to receive the radiofrequency signal from described two reception antennas respectively, channel data decoder module, connect described down-converted module to receive the signal after Digital Down Convert, and successively solution OFDM frame is carried out to the signal after the described Digital Down Convert received, OFDM demodulation, 16QAM demodulation, the Turbo decoding of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check, with the decoded transport stream TS stream of the Turbo obtaining 1/2 code check, encode be used for error correction coding with the decode Turbo of 1/2 corresponding code check of the Turbo of described 1/2 code check, described 16QAM demodulation, the Turbo of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check is decoded as single channel process, described solution OFDM frame, OFDM demodulation is two-way process, described TS stream has the MPEG-2 frame structure of 188 bytes, demultiplexing module, connect described channel data decoder module with the decoded transport stream TS stream of the Turbo receiving described 1/2 code check, demultiplexing is carried out to the decoded transport stream TS stream of the Turbo of described 1/2 code check, to obtain audio TS bag respectively, video TS wraps and additional data TS wraps, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is used to be responsible for assigning the identifier of different value for different types of data in the TS stream after multiplexing, separate TS bag module, connect described demultiplexing module to receive described audio TS bag, video TS bag and additional data TS, and XieTSBao is carried out, to obtain compressed audio coding data, video compression coding data and additional data coded data respectively to described audio TS bag, video TS bag and additional data TS, audio decompression module, connects described solution TS bag module to receive described compressed audio coding data, and carries out audio decompression to described compressed audio coding data, obtains digital audio and video signals, video decompression module, connects described solution TS bag module to receive described video compression coding data, and carries out video decompression to described video compression coding data, obtains digital video signal, additional data decoder module, connect described solution TS bag module to receive described additional data coded data, and described additional data coded data is 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 audio decompression module to receive the digital audio and video signals of described audio decompression module output and to play described digital audio and video signals, video playback module, connects described video decompression module, additional data decoder module to receive described digital video signal and described digitized additional data respectively, and described digital video signal and described digitized additional data is carried out combination broadcasting, wherein, 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, 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, described down-converted module comprises digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and by the signal multiplication after the described digitlization in the sine and cosine ripple sample value of generation and described down-converted module, complete mixing, to obtain the more low-frequency signal of signal after than described digitlization.Wherein, described audio playing module is the audio playing apparatus comprising left and right acoustic channels loud speaker, and described video playback module is the video play device comprising liquid crystal display.
More specifically, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: described additional data is caption data, and the subtitling image that described caption data is corresponding overlaps on image corresponding to described digital video signal to show in described video playback module.
More specifically, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: described DVB-T receiver be installed in comprise taxi, bus or family car moving vehicle on.
More specifically, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: the decoded transport stream TS stream of the Turbo of described demultiplexing module to described 1/2 code check carries out network information table NIT, the BAT bouquet association table BAT or service information list SDT that demultiplexing also obtains business information SI, for the parsing of electronic program guide (EPG) information.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
The block diagram of the DVB-T receiver of the vehicle-mounted MIMO-type that Fig. 1 illustrates according to an embodiment of the present invention.
Wherein, 1, two reception antennas; 2, down-converted module; 3, channel data decoder module; 4, demultiplexing module; 5, TS bag module is separated; 6, audio decompression module; 7, video decompression module; 8, additional data decoder module; 9, audio playing module; 10, video playback module.
Embodiment
Below with reference to accompanying drawings the embodiment of the DVB-T receiver of vehicle-mounted MIMO-type of the present invention is described in detail.
Fig. 1 illustrates the block diagram of the DVB-T receiver of the vehicle-mounted MIMO-type illustrated according to an embodiment of the present invention.Wherein said DVB-T receiver comprises, two reception antennas 1, down-converted module 2, channel data decoder module 3, demultiplexing module 4 conciliates TS bag module 5, described two reception antennas 1, down-converted module 2, channel data decoder module 3, demultiplexing module 4 is conciliate TS bag module 5 and is connected successively, to carry out rf signal reception to the DVB-T signal of the MIMO-type transmitted in DVB-T channel received respectively, down-converted, channel data is decoded, demultiplexing conciliates TS bag, obtain compressed audio coding data, video compression coding data and additional data coded data are for the broadcasting of audio-video frequency content.Further, described DVB-T receiver also comprises, and two reception antennas 1 are received in the DVB-T signal of the MIMO-type transmitted in DVB-T channel, obtains radiofrequency signal, down-converted module 2, connect described two reception antennas 1 to receive described radiofrequency signal, described radiofrequency signal is carried out analog down to be transformed on intermediate frequency, to signal digital on intermediate frequency, then Digital Down Convert is carried out to the signal after digitlization, process in described Digital Down Convert processing module is two-way process, to receive the radiofrequency signal from described two reception antennas respectively, channel data decoder module 3, connect described down-converted module 2 to receive the signal after Digital Down Convert, and successively solution OFDM frame is carried out to the signal after the described Digital Down Convert received, OFDM demodulation, 16QAM demodulation, the Turbo decoding of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check, with the decoded transport stream TS stream of the Turbo obtaining 1/2 code check, encode be used for error correction coding with the decode Turbo of 1/2 corresponding code check of the Turbo of described 1/2 code check, described 16QAM demodulation, the Turbo of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check is decoded as single channel process, described solution OFDM frame, OFDM demodulation is two-way process, described TS stream has the MPEG-2 frame structure of 188 bytes, demultiplexing module 4, connect described channel data decoder module 3 with the decoded transport stream TS stream of the Turbo receiving described 1/2 code check, demultiplexing is carried out to the decoded transport stream TS stream of the Turbo of described 1/2 code check, to obtain audio TS bag respectively, video TS wraps and additional data TS wraps, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is used to be responsible for assigning the identifier of different value for different types of data in the TS stream after multiplexing, separate TS bag module 5, connect described demultiplexing module 4 to receive described audio TS bag, video TS bag and additional data TS, and XieTSBao is carried out, to obtain compressed audio coding data, video compression coding data and additional data coded data respectively to described audio TS bag, video TS bag and additional data TS, audio decompression module 6, connects described solution TS bag module 5 to receive described compressed audio coding data, and carries out audio decompression to described compressed audio coding data, obtains digital audio and video signals, video decompression module 7, connects described solution TS bag module 5 to receive described video compression coding data, and carries out video decompression to described video compression coding data, obtains digital video signal, additional data decoder module 8, connect described solution TS bag module 5 to receive described additional data coded data, and described additional data coded data is 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 9, connects described audio decompression module 6 to receive the digital audio and video signals of described audio decompression module 6 output and to play described digital audio and video signals, video playback module 10, connect described video decompression module 7, additional data decoder module 8 to receive described digital video signal and described digitized additional data respectively, and described digital video signal and described digitized additional data are carried out combination broadcasting, wherein, 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, 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, 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 by the signal multiplication after the described digitlization in the sine and cosine ripple sample value of generation and described down-converted module 2, complete mixing, to obtain the more low-frequency signal of signal after than described digitlization.Wherein, described audio playing module 9 is the audio playing apparatus comprising left and right acoustic channels loud speaker, and described video playback module 10 is the video play device comprising liquid crystal display.
Wherein, digital video broadcasting (DVB, DigitalVideoBroadcasting) is by " a series of Digital Television Open Standards being the world and admitting of DVBProject maintenance." DVBProject " is an industrial organization by more than 300 member compositions, it is by european telecommunications standards institute (EuropeanTelecommunicationsStandardsInstitute, ETSI), European electronic standardization tissue (EuropeanCommitteeforElectrotechnicalStandardization, and European Broadcasting Union (EuropeanBroadcastingUnion CENELEC), EBU) " joint specialist group " (JointTechnicalCommittee, the JTC) that constitute jointly initiates.DVB system transfers mode has several as follows: satellite television (DVB-S and DVB-S2), cable TV (DVB-C), terrestrial television (DVB-T), hand-held terrestrial wireless (DVB-H).The physical layer of these standard definitions transmission system and data link layer.Equipment is by synchronous parallel interface (synchronousparallelinterface, SPI), synchronous serial interface (synchronousserialinterface, SSI), or Asynchronous Serial Interface (asynchronousserialinterface, ASI) is mutual with physical layer.Data are transmitted in the mode of mpeg 2 transport stream, and require to meet stricter restriction (DVB-MPEG).The standard (DVB-H) of the instant compressed transmission data of mobile terminal is among test at present.The main distinction of these transmission meanss is the modulation system used, because the requirement of the frequency bandwidth of their application different is different.Utilize the DVB-S of high frequency carrier to use QPSK modulation system, utilize the DVB-C of low frequency carrier signal to use QAM-64 modulation system, and utilize the DVB-T of VHF and UHF carrier wave to use COFDM modulation system.
Wherein, MIMO(Multiple-InputMultiple-Out-put) system is a core technology applying to 802.11n.802.11n be IEEE continue 802.11b a wireless local area network technology brand-new after g, speed can reach 600Mbps.Meanwhile, proprietary MIMO technology can improve the performance of existing 802.11a/b/g network.This technology is proposed in 1908 by Marconi the earliest, and he utilizes multiple antennas to suppress channel fading.According to transmitting-receiving two-end antenna amount, SISO(Single-InputSingle-Output relative to common) system, MIMO can also comprise SIMO(Single-InputMulti-ple-Output) system and MISO(Multiple-InputSingle-Output) system.MIMO represents multiple-input and multiple-output, is widely adopted, such as IEEE802.16e(Wimax in forth generation mobile communication technology standard), Long Term Evolution (LTE).In new generation of wireless local area network (LAN) (WLAN) standard, be generally used for IEEE802.11n, but also may be used for other 802.11 technology.MIMO is referred to as space diversity sometimes, because he uses multiple spatial channel transmission and receives data.Website (mobile device) or access point (AP) is only had to support could dispose MIMO during MIMO.The application of MIMO technology, makes space become one and may be used for putting forward high performance resource, and can increase the coverage of wireless system.
Wherein, Turbo code has an important feature to be that its decoding is comparatively complicated, more complicated than conventional convolution code is many, this complexity is not only that its decoding will adopt the process of iteration, and algorithm itself the also more complicated adopted, the key of these algorithms not only wants to carry out decoding to every bit, but also will provide with this decoding the reliability information that every bit translates, had these information, iteration just can go on.Two simple component codes be there is the long code of pseudo-random characteristics by Turbo code dexterously by pseudo random interleaver parallel cascade, and by two soft enter/softly go out to carry out successive ignition between (SISO) decoder to achieve pseudorandom decoding.His performance, considerably beyond other coded system, obtains and pays close attention to widely and develop, and create far-reaching influence to current coding theory and research method.
Wherein, OFDM(OrthogonalFrequencyDivisionMultiplexing) i.e. orthogonal frequency division multiplexi, in fact OFDM is MCMMulti-CarrierModulation, the one of multi-carrier modulation, its main thought is: channel is divided into some orthogonal sub-channels, high-speed data signal is converted to parallel low speed sub data flow, be modulated to and transmit on each of the sub-channels.Orthogonal signalling by adopting correlation technique to separate at receiving terminal, can reduce the mutual interference ICI between subchannel like this.Signal bandwidth on every sub-channels is less than the correlation bandwidth of channel, and the flatness of can regarding as therefore on every sub-channels declines, thus can eliminate intersymbol interference.And due to the bandwidth of every sub-channels be only the sub-fraction of former channel width, channel equalization becomes relatively easy.
In addition, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: described additional data is caption data, and the subtitling image that described caption data is corresponding overlaps on image corresponding to described digital video signal to show in described video playback module 10.
In addition, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: described DVB-T receiver be installed in comprise taxi, bus or family car moving vehicle on.Namely on all carriers that DVB-T channel can be utilized to carry out digital TV broadcast signal reception, the DVB-T receiver with MIMO technology of improvement can both be used, digital television program content that the DVB-T transmitter receiving corresponding MIMO sends, that comprise amusement media companies product placement information.
In addition, the DVB-T receiver of described vehicle-mounted MIMO-type comprises further: the decoded transport stream TS stream of the Turbo of described demultiplexing module 4 to described 1/2 code check carries out network information table NIT, the BAT bouquet association table BAT or service information list SDT that demultiplexing also obtains business information SI, for the parsing of electronic program guide (EPG) information.Described EPG information is convenient to user can be advanced by the relevant information of separating digital television program, as timetable, to formulate the plan of watching.
Adopt the DVB-T receiver of vehicle-mounted MIMO-type of the present invention, channel for moving vehicle is unstable, the technical problem that interference is many, MIMO technology is selected to realize the multiaerial system that multiple antennas sends, multiple antennas receives, overcome original channel multi-path fade-out, improve the reception of digital television program, enriched the content of ground digital television broadcast simultaneously, additional data and electronic program guides is increased in original digital video-audio signal, user for vehicle-mounted digital television provides more audio-visual content and guide information, meets many-sided demand of user.
Be understandable that, although the present invention with preferred embodiment disclose as above, but above-described embodiment and be not used to limit the present invention.For any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the technology contents of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (4)
1. a Digital Television Terrestrial Broadcasting DVB-T receiver for vehicle-mounted multiple-input and multiple-output MIMO-type, is characterized in that, described DVB-T receiver comprises:
Two reception antennas, down-converted module, channel data decoder module, demultiplexing module conciliate TS bag module, described two reception antennas, down-converted module, channel data decoder module, demultiplexing module are conciliate TS bag module and are connected successively, to carry out rf signal reception, down-converted, channel data decoding, demultiplexing reconciliation TS bag to the DVB-T signal of the MIMO-type transmitted in DVB-T channel received respectively, obtain the broadcasting for audio-video frequency content of compressed audio coding data, video compression coding data and additional data coded data
Comprise further:
Two reception antennas, are received in the DVB-T signal of the MIMO-type transmitted in DVB-T channel, obtain radiofrequency signal;
Down-converted module, connect described two reception antennas to receive described radiofrequency signal, described radiofrequency signal is carried out analog down to be transformed on intermediate frequency, to signal digital on intermediate frequency, then Digital Down Convert is carried out to the signal after digitlization, process in described Digital Down Convert processing module is two-way process, to receive the radiofrequency signal from described two reception antennas respectively;
Channel data decoder module, connect described down-converted module to receive the signal after Digital Down Convert, and successively solution OFDM frame is carried out to the signal after the described Digital Down Convert received, OFDM demodulation, 16QAM demodulation, the Turbo decoding of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check, with the decoded transport stream TS stream of the Turbo obtaining 1/2 code check, encode be used for error correction coding with the decode Turbo of 1/2 corresponding code check of the Turbo of described 1/2 code check, described 16QAM demodulation, the Turbo of the anti-Bit Interleave that matrix sub-clustering spiral interweaves and 1/2 code check is decoded as single channel process, described solution OFDM frame, OFDM demodulation is two-way process, described TS stream has the MPEG-2 frame structure of 188 bytes,
Demultiplexing module, connect described channel data decoder module with the decoded transport stream TS stream of the Turbo receiving described 1/2 code check, demultiplexing is carried out to the decoded transport stream TS stream of the Turbo of described 1/2 code check, to obtain audio TS bag respectively, video TS wraps and additional data TS wraps, described audio TS bag, video TS bag and additional data TS bag have different Packet Identifier PID, and described PID is used to be responsible for assigning the identifier of different value for different types of data in the TS stream after multiplexing;
Separate TS bag module, connect described demultiplexing module to receive described audio TS bag, video TS bag and additional data TS, and XieTSBao is carried out, to obtain compressed audio coding data, video compression coding data and additional data coded data respectively to described audio TS bag, video TS bag and additional data TS;
Audio decompression module, connects described solution TS bag module to receive described compressed audio coding data, and carries out audio decompression to described compressed audio coding data, obtains digital audio and video signals;
Video decompression module, connects described solution TS bag module to receive described video compression coding data, and carries out video decompression to described video compression coding data, obtains digital video signal;
Additional data decoder module, connect described solution TS bag module to receive described additional data coded data, and described additional data coded data is 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 audio decompression module to receive the digital audio and video signals of described audio decompression module output and to play described digital audio and video signals;
Video playback module, connects described video decompression module, additional data decoder module to receive described digital video signal and described digitized additional data respectively, and described digital video signal and described digitized additional data is carried out combination broadcasting;
Wherein, 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, 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, described down-converted module comprises digital controlled oscillator mixing unit, described digital controlled oscillator mixing unit produces sine and cosine ripple sample value, and by the signal multiplication after the described digitlization in the sine and cosine ripple sample value of generation and described down-converted module, complete mixing, to obtain the more low-frequency signal of signal after than described digitlization;
Wherein, described audio playing module is the audio playing apparatus comprising left and right acoustic channels loud speaker, and described video playback module is the video play device comprising liquid crystal display.
2. the DVB-T receiver of vehicle-mounted MIMO-type as claimed in claim 1, is characterized in that:
Described additional data is caption data, and the subtitling image that described caption data is corresponding overlaps on image corresponding to described digital video signal to show in described video playback module.
3. the DVB-T receiver of vehicle-mounted MIMO-type as claimed in claim 1, is characterized in that:
Described DVB-T receiver be installed in comprise taxi, bus or family car moving vehicle on.
4. the DVB-T receiver of vehicle-mounted MIMO-type as claimed in claim 1, is characterized in that:
The decoded transport stream TS stream of the Turbo of described demultiplexing module to described 1/2 code check carries out network information table NIT, the BAT bouquet association table BAT or service information list SDT that demultiplexing also obtains business information SI, for the parsing of electronic program guide (EPG) information.
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| CN104410888A (en) * | 2014-12-11 | 2015-03-11 | 成都新光微波工程有限责任公司 | Vehicle-mounted digital television receiver |
| CN109906560B (en) * | 2016-11-11 | 2021-12-10 | 三星电子株式会社 | Vehicle performing wireless communication and communication method thereof |
| CN110505645B (en) * | 2019-09-30 | 2023-03-24 | 北京百度网讯科技有限公司 | Communication mode control method and device, electronic equipment and communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7221358B2 (en) * | 2002-09-24 | 2007-05-22 | Fujitsu Ten Limited | In-vehicle digital broadcast reception apparatus |
| KR20040046322A (en) * | 2002-11-27 | 2004-06-05 | 엘지전자 주식회사 | Signal Processing Apparatus and Method of Multi Input, Multi Output Mobile Communication System |
| JP4372117B2 (en) * | 2005-06-30 | 2009-11-25 | 富士通テン株式会社 | Receiver |
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