CN100576876C - Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen - Google Patents
Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen Download PDFInfo
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- CN100576876C CN100576876C CN200510035257A CN200510035257A CN100576876C CN 100576876 C CN100576876 C CN 100576876C CN 200510035257 A CN200510035257 A CN 200510035257A CN 200510035257 A CN200510035257 A CN 200510035257A CN 100576876 C CN100576876 C CN 100576876C
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 230000005236 sound signal Effects 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 5
- 238000012163 sequencing technique Methods 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 16
- 230000003044 adaptive effect Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241001062009 Indigofera Species 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
A kind of Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen, comprise the audio frequency and video commutation circuit, it is output video image signal and audio signal respectively, and wherein video signal is transported to format conversion circuit through video image processing circuit, LVDS transmitter, LVDS receiver, row cache device successively; Audio signal is transported to format conversion circuit through described audio frequency processing circuit; Described format conversion circuit output signal is sent through described optical transmission circuit; Described LVDS transmitter is connected with LCD display, and described row cache device is connected with sequential control circuit.System of the present invention constitutes simple, high, the simple and convenient user operation of reliability, and can accept various input signal sources.
Description
[technical field]
The invention belongs to full-color LED display screen audio/video image processing, monitoring and transmission technique field.
[background technology]
Known full-color LED display screen (as Chinese utility model patent CN2679753Y) transmits the computer graphic image signal by means of all-purpose computer and the video card that has a DVI (digital video image interface) usually.In order to accept and to transmit the analog video signal that comes from DVD or TV, also need screen transaction card of expansion slot interpolation usually at computer.Vision signal is at first delivered to the screen transaction card, by Audio and Video Processing Card input signal is carried out being sent to computer after the digitized processing, computer is by broadcast in the window (this window is corresponding with LED display) of special-purpose multimedia software appointment on computer screen then, by the DVI interface on the video card vision signal or computer graphic image signal passed out to next stage and handles at last.The system of Gou Chenging is owing to be core with the computer and need multimedia software by special use like this, thereby system constitutes complicatedly, and reliability is not high, and user's operation and use inconvenience generally needs through special training.In addition, be subjected to the restriction of video plug-in card, accept limited input signal source only.
[summary of the invention]
Technical problem to be solved by this invention is, defective at prior art, provide a kind of system to constitute simple, high, the simple and convenient user operation of reliability, and can accept the Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of various input signal sources.
For solving the problems of the technologies described above, the present invention is achieved through the following technical solutions: a kind of Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen comprises audio frequency and video commutation circuit, audio frequency processing circuit, video image processing circuit, LVDS transmitter, LCD (liquid crystal) display, LVDS receiver, row cache device, sequential control circuit, format conversion circuit, optical transmission circuit and optical receiving circuit; Described audio frequency and video commutation circuit be used to switch to the user by the OSD menu on keyboard or Infrared remote controller and the display input signal source of appointment, the LVDS transmitter is to carrying out from the parallel video picture signal of video image processing circuit and going here and there and change and the branch two-way output of LVDS driving back, one the tunnel is sent to display, the LVDS receiver then is sent on another road, the LVDS receiver is sent to the row cache device after converting serial data stream to parallel data stream, and format conversion circuit is sent to optical transmission circuit with fixing clock rate after the 32bit data transaction is become the 16bit data; The video signal of described audio frequency and video commutation circuit output is transported to described format conversion circuit through described video image processing circuit, LVDS transmitter, LVDS receiver, row cache device successively; The audio signal of described audio frequency and video commutation circuit output is transported to described format conversion circuit through described audio frequency processing circuit; Described format conversion circuit output signal is sent through described optical transmission circuit; Described LCD display is connected with described LVDS transmitter, and described sequential control circuit is connected with described row cache device, and described display is built-in with the LVDS receiver.
Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention compared with prior art has following outstanding advantage:
(1) system's formation is simple, reliability is high;
(2) synchronous display monitoring of LCD and visual OSD man machine operation interface are exempted from user training;
(3) can accept various input signal sources (YPbPr, YCbCr, Video, S-Video, PC-VGA, DVI, TV);
(4) display screen body size can arbitrarily customize by the 4:3 SD or the 16:9 high definition display mode of standard;
(5) brightness of screen body can be controlled with ambient light adaptive.
[description of drawings]
Fig. 1 is an Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen theory diagram of the present invention.
Fig. 2 is a full-color LED display screen of the present invention system annexation schematic diagram.
[embodiment]
Please refer to shown in Figure 1ly, Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention comprises audio frequency and video commutation circuit 1, video image processing circuit 2, LVDS transmitter 3 and LVDS receiver 5, row cache device (or frame buffer) 7, sequential control circuit 6, format conversion circuit 8, optical transmission circuit 9 and optical receiving circuit 11, LCD (liquid crystal) display 4 and audio frequency processing circuit 10.
The various numerals and the analog audio-video image input signal (YPbPr, YCbCr, Video, S-Video, PC-VGA, DVI, TV, Audio) that come from DVD, TV, computer etc. are at first delivered to audio frequency and video commutation circuit 1, the user selects input signal source by the OSD menu on keyboard or infrared remote control and the LCD display 4, switches to the input signal source of user's appointment.Then, video signal (YPbPr, YCbCr, Video, S-Video, PC-VGA, DVI, TV) is delivered to video image processing circuit 2 and is handled, and audio signal (Audio) is delivered to audio frequency processing circuit 10 and handled.At different input signal sources, video image processing circuit 2 can carry out corresponding different disposal (to be changed as AD, colour decoding, γ proofreaies and correct, interlacing is changeed line by line, storage, convergent-divergent etc.), parallel digital video picture signal is after treatment undertaken by LVDS transmitter 3 and is gone here and there and change and the branch two-way output of LVDS driving back, one the tunnel is sent to LCD display 4, and (this display is built-in with the LVDS receiver, LCD sequencing control and LCD display driver circuit etc. are to finish demonstration), be used for the user and indoor or outdoor LED display screen are monitored in real time shown to finish relevant parameters with the OSD menu and to regulate, input source selection etc.; The LVDS receiver then is sent on another road, the LVDS receiver is (red with RGB, green, indigo plant) serial data stream converts parallel data stream (as: R to, G, each 8bit of B, common 24bit) is sent to row (or frame) buffer 7 after, under sequential control circuit 6 controls, carry out L2 cache and speed conversion processing, the 24bit RGB parallel data of being read by row (frame) memory 7 can be sent to 32bit/16bit format conversion circuit 8 together with control code and the multi-channel digital audio signal of 8bit again, the 32bit data transaction become after the 16bit data be sent to superelevation bandwidth optical transmission circuit 9, it is carried out the 8B/10B coding by optical transmission circuit 9 with fixing clock rate, and send after string conversion and the opto-electronic conversion.
Refer again to shown in Figure 2, the signal that optical transmission circuit 9 is sent is sent to optical receiving circuit 11 after via the long Distance Transmission of optical cable, by 11 pairs of serial data streams of optical receiving circuit go here and there and conversion, 8B/10B decoding and clock recovery after be sent to storage of LED display frame and sequential control circuit 12.Under the control of sequential control circuit, after will being divided into many paths data from the data that frame memory is read, be sent to each LED channels display screen scanning circuit 13 and drive circuit 14 simultaneously, thereby finish the demonstration of video signal on full-color LED display screen from the varying input signal source.
The size of the image resolution ratio that Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention transmits is identical with the display resolution of LCD display 4, as is 1024 * 768 or 1280 * 720.In order to make the less LED display of display resolution show complete video image, the mode that can take to open subwindow on LCD display allows video image be presented in the subwindow, and allow LCD display subwindow display resolution size and the big or small the same of LED display display resolution or allow LED display show partial content in the LCD display subwindow.
Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention includes an embedded computer on audio-video signal treatment circuit 17, can be by the communication between the serial communication interface on realization of the serial communication interface on this computer and the row cache light transmission board 16, thereby the user can be by the OSD menu on the LCD display to LED display transmitting control commands (seeing shown in Figure 2).
Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention is provided with an optical sensor 15 at the LED display end, and be connected with frame storage and sequential control circuit 12, be used for perception LED display surrounding environment light, realize adaptive control (seeing shown in Figure 2) LED display brightness.
Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen of the present invention compared with prior art has following outstanding advantage:
(1) system's formation is simple, reliability is high;
(2) monitoring of LCD simultaneous display and visual OSD man machine operation interface are exempted from user training;
(3) can accept various input signal sources (YPbPr, YCbCr, Video, S-Video, PC-VGA, DVI, TV);
(4) display screen body size can arbitrarily customize by 4:3 SD or the 16:9 high definition display mode of standard;
(5) brightness of screen body can be controlled with ambient light adaptive.
Claims (9)
1, a kind of Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen is characterized in that: comprise audio frequency and video commutation circuit (1), audio frequency processing circuit (10), video image processing circuit (2), LVDS transmitter (3), display (4), LVDS receiver (5), row cache device (7), sequential control circuit (6), format conversion circuit (8) and optical transmission circuit (9); Described audio frequency and video commutation circuit (1) be used to switch to the user by the OSD menu on keyboard or Infrared remote controller and the display (4) input signal source of appointment, LVDS transmitter (3) is to carrying out from the parallel video picture signal of video image processing circuit (2) and going here and there and change and the branch two-way output of LVDS driving back, one the tunnel is sent to display (4), LVDS receiver (5) then is sent on another road, LVDS receiver (5) is sent to row cache device (7) after converting serial data stream to parallel data stream, and format conversion circuit (8) is sent to optical transmission circuit (9) with fixing clock rate after the 32bit data transaction is become the 16bit data; The video signal of described audio frequency and video commutation circuit (1) output passes through described video image processing circuit (2), LVDS transmitter (3), LVDS receiver (5), row cache device (7) successively and is transported to described format conversion circuit (8); The audio signal of described audio frequency and video commutation circuit (1) output is transported to described format conversion circuit (8) through described audio frequency processing circuit (10); Described format conversion circuit (8) output signal is sent through described optical transmission circuit (9); Described display (4) is connected with described LVDS transmitter (3), and described sequential control circuit (6) is connected with described row cache device (7), and described display (4) is built-in with the LVDS receiver.
2, circuit according to claim 1 is characterized in that: described row cache device (7) also can be frame buffer.
3, circuit according to claim 1 is characterized in that: also comprise optical receiving circuit (11), be connected with described optical transmission circuit (9).
4, circuit according to claim 3 is characterized in that: also comprise frame storage and sequential control circuit (12), be connected with described optical receiving circuit (11).
5, circuit according to claim 4 is characterized in that: the signal of described frame storage and sequential control circuit (12) output is sent to LED display through passage scanning circuit (13) and drive circuit (14) successively.
6, circuit according to claim 4 is characterized in that: also comprise optical sensor (15), be connected with described frame storage and sequential control circuit (12).
7, circuit according to claim 1 is characterized in that: also comprise audio-video signal treatment circuit (17), include embedded computer on it, described embedded computer has serial communication interface.
8, circuit according to claim 1 is characterized in that: also comprise row cache light transmission board (16), which is provided with serial communication interface.
9, circuit according to claim 1 is characterized in that: described display (4) is LCD, and it also is built-in with LCD sequencing control and LCD display driver circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510035257A CN100576876C (en) | 2005-06-20 | 2005-06-20 | Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510035257A CN100576876C (en) | 2005-06-20 | 2005-06-20 | Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen |
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| Publication Number | Publication Date |
|---|---|
| CN1885905A CN1885905A (en) | 2006-12-27 |
| CN100576876C true CN100576876C (en) | 2009-12-30 |
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| CN200510035257A Active CN100576876C (en) | 2005-06-20 | 2005-06-20 | Image manipulation and real-time monitoring and transmission channel of audio frequency and video of full-color LED display screen |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630974B (en) * | 2009-08-12 | 2015-04-29 | 康佳集团股份有限公司 | High-speed mass data transfer system and implementation method thereof |
| CN101783112B (en) * | 2010-03-19 | 2012-03-14 | 四川长虹电器股份有限公司 | LVDS (Low Voltage Differential Signaling) signal acquisition device |
| CN102385850A (en) * | 2010-08-31 | 2012-03-21 | 中国长城计算机深圳股份有限公司 | Signal transformation circuit and digital signal display device |
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| C14 | Grant of patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen Konka Video System Engineering Co., Ltd. Assignor: Konka Group Co., Ltd. Contract fulfillment period: 2009.8.27 to 2014.8.26 contract change Contract record no.: 2009440001389 Denomination of invention: Full-color LED display screen audio/video image processing and real-time monitoring and transmission circuit License type: Exclusive license Record date: 2009.9.10 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.27 TO 2014.8.26; CHANGE OF CONTRACT Name of requester: SHENZHEN CITY KONKA VIDEO + COMMUNICATION SYSTEMS Effective date: 20090910 |