CN203313333U - Digital television receiver compatible with multiple data connection interfaces - Google Patents
Digital television receiver compatible with multiple data connection interfaces Download PDFInfo
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- CN203313333U CN203313333U CN2013202474889U CN201320247488U CN203313333U CN 203313333 U CN203313333 U CN 203313333U CN 2013202474889 U CN2013202474889 U CN 2013202474889U CN 201320247488 U CN201320247488 U CN 201320247488U CN 203313333 U CN203313333 U CN 203313333U
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Abstract
The utility model relates to a digital television receiver compatible with multiple data connection interfaces. The digital television receiver comprises a first demodulation processing module, a second demodulation processing module, a digital image filtering module, a digital program channel switching module, a user input module, a controller module, a display module and a unified data interface module. The digital image filtering module performs digital image filtering on digital program data output by the first demodulation processing module. The digital program channel switching module is connected with the display module and the unified data interface module. The controller module is connected with the digital program channel switching module and the user input module so as to output digital program data output by the digital image filtering module or the second demodulation processing module to the display module or the unified data interface module in a switching way according to the choice of a user. By means of the digital television receiver, digital programs which are filtered or not filtered can be flexibly selected to the display or external equipment in line with the demands of the user.
Description
Technical field
The utility model relates to the television reception field, relates in particular to a kind of digital television receiver of compatible several data connecting interface.
Background technology
TV is the important amusement of people and monitoring tools.Along with the fast development of TV tech, television-type starts to the Digital Television transition from the simulated television of black-and-white TV, color TV.Digital Television has the unrivaled advantage of simulated television, it can transmit more programme content in limited frequency band, the definition of the programme content of its propagation also is improved greatly, therefore, although in present stage, also there is certain market in simulated television, but various types of Digital Television is only the direction of future development and research.
But, existing digital television receiver often can only receive and play a railway digital TV programme, and can't be when using external interface to connect external equipment, can on display, play TV signal, externally on equipment, play TV signal again, simultaneously, external interface is more single, the signal of one of DVI, HDMI or DisplayPort form can only be received and dispatched, the needs that the user with multiple peripheral hardware plays digital television program can't be met.
Therefore, the digital television receiver that needs a kind of compatible several data connecting interface, adopt the on-site programmable gate array FPGA chip to realize the data transmit-receive of multi-signal form, overcome the incompatible technical problem of external interface, in digital television receiver, receive simultaneously and process the different digital television program of two-way, according to user's preference, select to watch the digital television program that processing after filtering or filtered ripple are processed, catered to user's audiovisual impression.
The utility model content
In order to address the above problem, the utility model provides a kind of digital television receiver of compatible several data connecting interface, the integrated translation function that comprises the multi-signal form of DVI, HDMI or DisplayPort in connecting interface externally, the data transmit-receive carried out with the external equipment ensured with various interface, simultaneously, increase the channel video signal that a railway digital filtering is processed, be convenient to the user will be applicable to own appreciation habit flexibly according to the personal like vision signal and play on the display of equipment on the display of DTV receiver or externally.
According to one side of the present utility model, a kind of digital television receiver of compatible several data connecting interface is provided, comprise the first demodulation process module, the second demodulation process module, the digital picture filtration module, the digital program channel switching module, user's input module, controller module, display apparatus module and uniform data interface module, wherein said digital picture filtration module carries out digital picture filtering to the digital program data of described the first demodulation process module output, described digital program channel switching module is connected with described uniform data interface module with described display apparatus module, described controller module is connected with described user's input module with described digital program channel switching module, with the selection according to the user by the filtered digital program data of digital picture or without the digital program data exchange of the second demodulation process module output of digital picture filtering to display apparatus module or uniform data interface module.More specifically, the digital television receiver of described compatible several data connecting interface further comprises: the first demodulation process module, reception is from the digital TV broadcast signal of satellite television DVB-S channel, and described digital TV broadcast signal is carried out to demodulation process, to export the packet of 188 bytes, the packet of described 188 bytes is the transport stream TS stream of the MPEG-2 of Motion Picture Experts Group frame structure, the second demodulation process module, receive the digital TV broadcast signal from cable TV DVB-C channel, and described digital TV broadcast signal carried out to demodulation process, to export the packet of 188 bytes, the first demultiplexing module, connect described the first demodulation process module and carry out demultiplexing with the TS stream by described the first demodulation process module output, outputting audio data TS stream, video data TS stream, additional data TS stream, described voice data TS stream, video data TS stream, additional data TS stream has different Packet Identifier PID, described voice data TS stream, video data TS stream, additional data TS stream carries respectively the voice data that digital television program is corresponding, video data, additional data, described PID is the be responsible for assigning identifier of different value of different types of data in TS stream, the second demultiplexing module, connect described the second demodulation process module and carry out demultiplexing with the TS stream by described the second demodulation process module output, outputting audio data TS stream, video data TS stream, additional data TS stream, described voice data TS stream, video data TS stream, additional data TS stream have different Packet Identifier PID, the one TS stream parse module, connect described the first demultiplexing module, receive voice data TS stream, video data TS stream, the additional data TS stream of described the first demultiplexing module output, and described voice data TS stream, video data TS stream, additional data TS stream are carried out respectively TS stream and unpacks, to obtain corresponding voice data, video data, additional data, the 2nd TS stream parse module, connect described the second demultiplexing module, receive voice data TS stream, video data TS stream, the additional data TS stream of described the second demultiplexing module output, and described voice data TS stream, video data TS stream, additional data TS stream are carried out respectively TS stream and unpacks, to obtain corresponding voice data, video data, additional data, the digital picture filtration module, connect a described TS stream parse module to receive voice data, video data, the additional data of a described TS stream parse module output, and the video data received is carried out to the medium filtering processing, to export video data, the additional data after described voice data, filtering are processed, the digital program channel switching module, connect described the 2nd TS stream parse module to receive voice data, video data, the additional data of described the 2nd TS stream parse module output, connect video data, additional data after described digital picture filtration module is processed with the voice data, the filtering that receive described digital picture filtration module output, and make decision the data retransmission of the digital television program of described the 2nd TS stream parse module or the output of described digital picture filtration module to display apparatus module or uniform data interface module in the control of controller module, user's input module, receive the user by the digital program channel selection information of remote controller or control key-press input, described digital program channel selection information is play or sends to external equipment by the uniform data interface module at display apparatus module for the data selection of the digital television program by described digital picture filtration module output, controller module, connect described user's input module and described digital program channel switching module, when the user selects the data selection of the digital television program of described digital picture filtration module output when display apparatus module is play, control described digital program channel switching module with the data retransmission of the digital television program by the output of described digital picture filtration module to display apparatus module, by the data retransmission of the digital television program of described the 2nd TS stream parse module output to the uniform data interface module, when the user selects the data selection of the digital television program of described digital picture filtration module output is sent to external equipment by the uniform data interface module, control described digital program channel switching module with the data retransmission of the digital television program by described the 2nd TS stream parse module output to display apparatus module, by the data retransmission of the digital television program of described digital picture filtration module output to the uniform data interface module, display apparatus module, connect described digital program channel switching module with the data of the digital television program of reception forwarding and play, the uniform data interface module, connect described digital program channel switching module and give external equipment with the Data Concurrent that receives the digital television program forwarded, described uniform data interface module adopts fpga chip to realize data are converted to the signal of DVI, HDMI or DisplayPort form, to send to, has DVI, an external equipment of HDMI or DisplayPort interface, wherein, described digital picture filtration module adopts medium filtering to process the filtering video data of input, and described medium filtering is to be the mean value of the pixel value of surrounding pixel by the pixel value value of each pixel of the image of composition video.
More specifically, the digital television receiver of described compatible several data connecting interface further comprises: described the first demodulation process module and described the second demodulation process module all comprise that convolutional deinterleaver, reed-solomon RS decoder are with respectively to the processing of carrying out that convolution deinterleaves, RS decodes of described digital TV broadcast signal.
More specifically, the digital television receiver of described compatible several data connecting interface further comprises: described TS stream is comprised of packet header and load, described packet header comprises a sync byte SYNC1 and three other bytes, described three other bytes are 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 digital television receiver of described compatible several data connecting interface further comprises: the digital TV broadcast signal that described the first demodulation process module or described the second demodulation process module receive is the digital TV broadcast signal after the tuner of digital television receiver is processed.
The accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present utility model is described, wherein:
Fig. 1 is according to the block diagram of the digital television receiver of the compatible several data connecting interface shown in the utility model embodiment.
Wherein, the 1, first demodulation process module; 2, the second demodulation process module; 3, the first demultiplexing module; 4, the second demultiplexing module; 5, a TS stream parse module; 6, the 2nd TS stream parse module; 7, digital picture filtration module; 8, program channel switching module; 9, user's input module; 10, controller module; 11, display apparatus module; 12, uniform data interface module.
Embodiment
Below with reference to accompanying drawings the embodiment of the digital television receiver of compatible several data connecting interface of the present utility model is elaborated.
Fig. 1 illustrates the block diagram according to the digital television receiver of the compatible several data connecting interface shown in the utility model embodiment.Wherein said digital television receiver comprises, the first demodulation process module 1, the second demodulation process module 2, digital picture filtration module 7, digital program channel switching module 8, user's input module 9, controller module 10, display apparatus module 11 and uniform data interface module 12, the digital program data of 7 pairs of described the first demodulation process module 1 outputs of wherein said digital picture filtration module are carried out digital picture filtering, described digital program channel switching module 8 is connected with described uniform data interface module 12 with described display apparatus module 11, described controller module 10 is connected with described user's input module 9 with described digital program channel switching module 8, with the selection according to the user by the filtered digital program data of digital picture or without the digital program data exchange of the second demodulation process module 2 output of digital picture filtering to display apparatus module 11 or uniform data interface module 12.Further, the digital television receiver of described compatible several data connecting interface also comprises, the first demodulation process module 1, reception is from the digital TV broadcast signal of satellite television DVB-S channel, and described digital TV broadcast signal is carried out to demodulation process, to export the packet of 188 bytes, the packet of described 188 bytes is the transport stream TS stream of the MPEG-2 of Motion Picture Experts Group frame structure, the second demodulation process module 2, receive the digital TV broadcast signal from cable TV DVB-C channel, and described digital TV broadcast signal carried out to demodulation process, to export the packet of 188 bytes, the first demultiplexing module 3, connect described the first demodulation process module 1 and carry out demultiplexing with the TS stream by described the first demodulation process module 1 output, outputting audio data TS stream, video data TS stream, additional data TS stream, described voice data TS stream, video data TS stream, additional data TS stream has different Packet Identifier PID, described voice data TS stream, video data TS stream, additional data TS stream carries respectively the voice data that digital television program is corresponding, video data, additional data, described PID is the be responsible for assigning identifier of different value of different types of data in TS stream, the second demultiplexing module 4, connect described the second demodulation process module 2 and carry out demultiplexing with the TS stream by described the second demodulation process module 2 outputs, outputting audio data TS stream, video data TS stream, additional data TS stream, described voice data TS stream, video data TS stream, additional data TS stream have different Packet Identifier PID, the one TS stream parse module 5, connect described the first demultiplexing module 3, receive voice data TS stream, video data TS stream, the additional data TS stream of described the first demultiplexing module 3 outputs, and described voice data TS stream, video data TS stream, additional data TS stream are carried out respectively TS stream and unpacks, to obtain corresponding voice data, video data, additional data, the 2nd TS stream parse module 6, connect described the second demultiplexing module 4, receive voice data TS stream, video data TS stream, the additional data TS stream of described the second demultiplexing module 4 outputs, and described voice data TS stream, video data TS stream, additional data TS stream are carried out respectively TS stream and unpacks, to obtain corresponding voice data, video data, additional data, digital picture filtration module 7, connect a described TS stream parse module 5 to receive voice data, video data, the additional data of described TS stream parse module 5 outputs, and the video data received is carried out to the medium filtering processing, to export video data, the additional data after described voice data, filtering are processed, digital program channel switching module 8, connect described the 2nd TS stream parse module 6 to receive voice data, video data, the additional data of described the 2nd TS stream parse module 6 outputs, connect video data, additional data after described digital picture filtration module 7 is processed with the voice data, the filtering that receive described digital picture filtration module 7 outputs, and make decision the data retransmission of the digital television program of described the 2nd TS stream parse module 6 or 7 outputs of described digital picture filtration module to display apparatus module 11 or uniform data interface module 12 in the control of controller module 10, user's input module 9, receive the user by the digital program channel selection information of remote controller or control key-press input, described digital program channel selection information is play or sends to external equipment by uniform data interface module 12 at display apparatus module 11 for the data selection of the digital television program by described digital picture filtration module 8 outputs, controller module 10, connect described user's input module 9 and described digital program channel switching module 8, when the user selects the data selection of the digital television program of described digital picture filtration module 7 outputs when display apparatus module 11 is play, control described digital program channel switching module 8 with the data retransmission of the digital television program by 7 outputs of described digital picture filtration module to display apparatus module 11, by the data retransmission of the digital television program of described the 2nd TS stream parse module 6 outputs to uniform data interface module 12, when the user selects the data selection of the digital television program of described digital picture filtration module 7 outputs is sent to external equipment by uniform data interface module 12, control described digital program channel switching module 8 with the data retransmission of the digital television program by described the 2nd TS stream parse module 6 outputs to display apparatus module 11, by the data retransmission of the digital television program of described digital picture filtration module 7 outputs to uniform data interface module 12, display apparatus module 11, connect described digital program channel switching module 8 with the data of the digital television program of reception forwarding and play, uniform data interface module 12, connect described digital program channel switching module 8 and give external equipment with the Data Concurrent that receives the digital television program forwarded, described uniform data interface module 12 adopts fpga chips to realize data are converted to the signal of DVI, HDMI or DisplayPort form, to send to, has DVI, an external equipment of HDMI or DisplayPort interface, wherein, described digital picture filtration module 7 adopts medium filtering to process the filtering video data of input, and described medium filtering is to be the mean value of the pixel value of surrounding pixel by the pixel value value of each pixel of the image of composition video.
Wherein, median filtering method is a kind of nonlinear smoothing technology, and he is set to the intermediate value that this puts all pixel gray values in certain neighborhood window by the gray value of each pixel.Medium filtering is based on a kind of nonlinear signal processing technology that can effectively suppress noise of sequencing statistical theory, the basic principle of medium filtering is that the value of any in digital picture or Serial No. is replaced with the Mesophyticum of each point value in a neighborhood of this point, the actual value that pixel value around allowing approaches, thus isolated noise spot eliminated.Method is the two-dimentional sliding form by certain structure, and the size of pixel in plate according to pixel value sorted, and what generate monotone increasing (or decline) is the 2-D data sequence.
Wherein, DVI, HDMI, DisplayPort, DiiVA are digital audio/video interface standards common on market.DVI(Digital Visual Interface), it is digital visual interface, by Silicon Image, Intel(Intel), the Compaq(Compaq), IBM, HP(Hewlett-Packard), NEC, the companies such as Fujitsu (Fujitsu) form DDWG(Digital Display Working Group jointly, numeral shows working group) in the interface standard of release in 1999, DVI be take the PanalLink interfacing and is basis, based on the TMDS(transition minimized differential signaling) electronic protocol is as basic electrical connection, the highest signal transmission code stream is 1.65Gbps, analog video interface before comparing, it is fast that it has speed, picture is clear, support the characteristics of HDCP agreement.HDMI(High Definition Multimedia Interface), it is HDMI (High Definition Multimedia Interface), by Hitachi, Panasonic, Philip, Silicon Image, Sony, Thomson, the common HDMI high-definition media interface of setting up of 7 companies such as Toshiba is organized in formal issue on December 9th, 2002, HDMI be take DVI and is basis, adopt the TMDS encoding mechanism, to vision signal, audio signal and control signal are carried out time-division control, the maximum data transmission speed is 5Gbps, overcome DVI poor for panel TV and wide colour gamut terminal transparency, the image copyright protection is lacked and supports, do not support digital audio and video signals, the shortcomings such as the interface volume is large.DisplayPort, be called for short the DP interface, issued in May, 2006 by VESA (video electronics standard tissue).It is a kind of for all display devices open standard of (comprising inside and outside interface); adopt 8B/10B coding, embedded clock signal and micro-package framework; video content transmits in the package mode; support HDCP digital content protection agreement; simultaneously transmission of audio and video; maximum transmission bandwidth is 10.8Gb/S; it directly carries out the transmission of the low bandwidth data such as voice, video by the external channel that can realize two-way communication, and the DisplayPort HDMI that compares has larger transmission bandwidth and stronger compatibility.DiiVA, it is the digital high-definition interaction interface, by 9 enterprises such as TCL, Hisense, Skyworth, Konka, Changhong, Haier, SVA, panda electronics, Ling Xu, released in April, 2009, adopt the 8B/10B coding techniques identical with the DisplayPort interface, support that video bandwidth reaches 13.5Gbps, support the hybrid channel frequency range to add up to and surpass 2Gbps, can do bi-directional data and audio transmission, also support simultaneously HDCP2.0 and DTCP-IP, the connected mode that it adopts daisy chain, make any one equipment in the DiiVA network to access mutually.Different consumer electronics producers, semiconductor company, testing equipment producer and commercial electronics manufacturer, according to the number one needs, in the product of oneself, select different digital audio/video interfaces, these products comprise Digital Television, DVD, video tape recorder, computer, Set Top Box, video camera.
In addition, the digital television receiver of described compatible several data connecting interface further comprises: described the first demodulation process module 1 and described the second demodulation process module 2 all comprise that convolutional deinterleaver, reed-solomon RS decoder are with respectively to the processing of carrying out that convolution deinterleaves, RS decodes of described digital TV broadcast signal.
In addition, the digital television receiver of described compatible several data connecting interface further comprises: described TS stream is comprised of packet header and load, described packet header comprises a sync byte SYNC1 and three other bytes, described three other bytes are 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.
In addition, the digital television receiver of described compatible several data connecting interface further comprises: the digital TV broadcast signal that described the first demodulation process module 1 or described the second demodulation process module 2 receive is the digital TV broadcast signal after the tuner of digital television receiver is processed.
Wherein, tuner, be commonly called as tuner, is that television set is used for receiving high-frequency signal and a kind of device that demodulates video information, is also the first of public passage.The tuner of television set use at present generally is divided into digital signal tuner (abbreviation digit tuner) and analog signal tuner (being called for short the simulation tuner).In simple terms, the tuning and high-frequency signal amplifier received television signals exactly.The tuner internal circuit comprises low noise amplifier and low-converter, completes low noise amplification and frequency conversion function, both the 4GHz signal of feed output is amplified, then frequency reducing is 950 to 2150MHz the first intermediate-freuqncy signal.The effect of tuner is exactly that faint vision signal is amplified, and processes transmitting the unstable anamorphose caused and interference.Video frequency processing chip determines the resolution of image, and tuner determines the stability of image.But tuner itself is very easy to be subjected to electromagnetic interference, so the built-in television card generally can be at tuner coated outside layer of metal layer, with shield electromagnetic interference.The effect of digit tuner is the receiving digital television high-frequency signal, going forward side by side, the line frequency road is selected and high-frequency signal amplifies and frequency-conversion processing, some also is with intermediate-freuqncy signal to amplify and the high-frequency digital signal demodulation function, high-frequency digital signal is after demodulation, the digital signal of output is TS(Transport Stream) stream, TS stream also is transport stream, he be take " frame " be the digital data transmission of unit stream, in each frame of digital signal, contain synchronous head, data, the signals such as ending, for the MPEG2 digital signal, the binary signal bag that every frame signal is 188 bytes by length forms, its content contains one or more programs.Here the concept of " frame " and the frame in television image are very similar, but content is not identical, and a frame MPEG2 digital signal, corresponding to a two field picture, only is equivalent to the several pixels in the piece image content.
Adopt the digital television receiver of compatible several data connecting interface of the present utility model, adopt fpga chip to realize the conversion of various signal formats of the external interface of described digital television receiver, to adapt to the external equipment with unlike signal form interface, in addition, digital television program signal by the different signal to noise ratios of design two-way in digital television receiver, be convenient to show on the user is chosen in described digital television receiver according to oneself experience display, still export to external equipment, thus convenient for users to use.
Be understandable that, although the utility model with the preferred embodiment disclosure as above, yet above-described embodiment is not in order to limit the utility model.For any those of ordinary skill in the art, do not breaking away from technical solutions of the utility model scope situation, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present utility model.
Claims (1)
1. the digital television receiver of a compatible several data connecting interface, is characterized in that, described digital television receiver comprises:
The first demodulation process module, the second demodulation process module, the digital picture filtration module, the digital program channel switching module, user's input module, controller module, display apparatus module and uniform data interface module, wherein said digital picture filtration module carries out digital picture filtering to the digital program data of described the first demodulation process module output, described digital program channel switching module is connected with described uniform data interface module with described display apparatus module, described controller module is connected with described user's input module with described digital program channel switching module, with the selection according to the user by the filtered digital program data of digital picture or without the digital program data exchange of the second demodulation process module output of digital picture filtering to display apparatus module or uniform data interface module.
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| CN2013202474889U CN203313333U (en) | 2013-05-08 | 2013-05-08 | Digital television receiver compatible with multiple data connection interfaces |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103297823A (en) * | 2013-05-08 | 2013-09-11 | 无锡北斗星通信息科技有限公司 | Digital television receiver compatible with multiple data connecting interfaces |
| CN112019926A (en) * | 2019-05-28 | 2020-12-01 | 西安诺瓦星云科技股份有限公司 | Video processing device, method and system |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103297823A (en) * | 2013-05-08 | 2013-09-11 | 无锡北斗星通信息科技有限公司 | Digital television receiver compatible with multiple data connecting interfaces |
| CN112019926A (en) * | 2019-05-28 | 2020-12-01 | 西安诺瓦星云科技股份有限公司 | Video processing device, method and system |
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