CN202696738U - Video output signal synchronous control device - Google Patents
Video output signal synchronous control device Download PDFInfo
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- CN202696738U CN202696738U CN 201220269619 CN201220269619U CN202696738U CN 202696738 U CN202696738 U CN 202696738U CN 201220269619 CN201220269619 CN 201220269619 CN 201220269619 U CN201220269619 U CN 201220269619U CN 202696738 U CN202696738 U CN 202696738U
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Abstract
The utility model discloses a video output signal synchronous control device which comprises a plurality of video output devices, one of the plurality of video output devices further comprises a video synchronous signal generator and a synchronous signal transmitter, and each video output device further comprises a synchronous signal receiver. A clock signal output end and a synchronous signal output end of the video synchronous generator are respectively connected with a clock signal receiving end and a synchronous signal receiving end of the synchronous signal transmitter. A signal output end of the synchronous signal transmitter is respectively connected with signal receiving ends of the synchronous signal receivers. In each video output device, a clock signal output end of the synchronous signal receiver is connected with a clock signal input end of a video signal processor. The synchronous signal output end is respectively connected with the video signal processor and a synchronous signal input end of a video output driver. According to the video output signal synchronous control device, delaying does not exist, and complete synchrony of all the video output devices can be achieved.
Description
Technical field
The utility model relates to video output control, particularly relates to a kind of video output signals sync control device.
Background technology
Shown in Figure 1, structure chart for existing video output signals sync control device, comprise a plurality of picture output devices (picture output device 1 is to picture output device N), a plurality of videos include the video synchronization signal generator, video signal preprocessor and video output driver, in each picture output device, the video synchronization signal generator receives the synchronous locking signal (GENLOCK signal) of outside video signal source, by following the tracks of this GENLOCK signal clocking and synchronizing signal.The video synchronization signal generator exports clock signal to video processor, export respectively synchronizing signal to video processor and video output driver, wherein, video signal preprocessor carries out sampling processing according to clock signal to the vision signal that the video signal source from the outside receives, carry out the signal processing according to the vision signal that synchronizing signal receives the video signal source from the outside, the vision signal after output is processed is to the video output driver; The video output driver is used for will being converted to from the vision signal that video signal preprocessor receives video output signals according to synchronizing signal and drives outside display device.Picture output device 1 to picture output device N difference correspondence drives display device 1 to display device N.In the above-mentioned video output signals sync control device, each sync generator is all followed the tracks of GENLOCK signal clocking and synchronizing signal in the different video output equipment, but because each sync generator has to some extent time-delay in the different video output equipment when work, cause the multi-channel video output equipment to have signal jitter, can not arrive accurately Synchronization Control during each self-driven a plurality of display device tiled display, affect display effect.
The utility model content
Technical problem to be solved in the utility model is: remedy above-mentioned the deficiencies in the prior art, propose a kind of video output signals sync control device, can more accurately realize the Synchronization Control of multi-channel video output equipment.
Technical problem of the present utility model is solved by following technical scheme:
A kind of video output signals sync control device comprises a plurality of picture output devices, and each picture output device includes video signal preprocessor and video output driver; A picture output device in described a plurality of picture output device also comprises video synchronization signal generator and synchronization signal transmitter, and each described picture output device all also comprises synchronous signal receiver; The control end of described video synchronization signal generator connects the synchronous locking signal output of outside video signal source, the clock signal output terminal of described video synchronization signal generator and synchronous signal output end connect respectively clock signal receiving terminal and the synchronizing signal receiving terminal of described synchronization signal transmitter, the signal output part of described synchronization signal transmitter connects respectively the signal receiving end of each described synchronous signal receiver, described synchronization signal transmitter is used for that the clock signal of described video synchronization signal generator output and synchronizing signal are converted to signal transmission and exports each described synchronous signal receiver to, and each described synchronous signal receiver is used for recovering to produce described clock signal and described synchronizing signal from described signal transmission; In each described picture output device, the clock signal output terminal of described synchronous signal receiver connects the clock signal input terminal of described video signal preprocessor, and synchronous signal output end connects respectively the synchronous signal input end of described video signal preprocessor and video output driver.
The beneficial effect that the utility model is compared with the prior art is:
Video output signals sync control device of the present utility model, utilize the video synchronization signal generator of one of them picture output device in a plurality of picture output devices and the synchronization signal transmitter of setting up, in a plurality of picture output devices, set up respectively simultaneously synchronous signal receiver, thereby export respectively each picture output device to after same clock signal and synchronizing signal be converted to signal transmission, by the synchronous signal receiver in the picture output device clock signal and synchronizing signal are recovered, clock signal and the synchronizing signal then used in each picture output device can realize Complete Synchronization, do not have time-delay, so each picture output device can be realized Complete Synchronization.
Description of drawings
Fig. 1 is the structure chart of video output signals sync control device in the prior art;
Fig. 2 is the structure chart of the video output signals sync control device in the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further details.
As shown in Figure 2, be the structure chart of the video output signals sync control device in this embodiment.Video output signals sync control device 1 comprises a plurality of picture output devices (picture output device 1, picture output device 2 are to picture output device N), wherein, each picture output device includes synchronous signal receiver 103, video signal preprocessor 104 and video output driver 105, and one of them picture output device also comprises video synchronization signal generator 101 and synchronization signal transmitter 102.
Wherein, the control end of video synchronization signal generator 101 connects the synchronous locking signal output of outside video signal source 3, the clock signal output terminal of video synchronization signal generator 101 and synchronous signal output end connect respectively clock signal receiving terminal and the synchronizing signal receiving terminal of synchronization signal transmitter 102, and the signal output part of synchronization signal transmitter 102 connects respectively the signal receiving end of each synchronous signal receiver 103; In each picture output device, the clock signal output terminal of synchronous signal receiver 103 connects the clock signal input terminal of video signal preprocessor 104, synchronous signal output end connects respectively the synchronous signal input end of video signal preprocessor 104 and video output driver 105, the video signal source input of video signal preprocessor 104 connects the vision signal source output terminal of outside video signal source 3, and the video output terminals of video signal preprocessor 104 connects the video signal input terminal of video output driver 105.The output of video output driver 105 connects external display device 1 to be driven.
Video synchronization signal generator 101 is used for following the tracks of the GENLOCK signal that outside video signal source 3 sends, clocking and synchronizing signal, and export clock signal and synchronizing signal to synchronization signal transmitter 102.
Each synchronous signal receiver 103 is used for and will recovers clocking and synchronizing signal from the signal transmission that synchronization signal transmitter 102 receives.Synchronous signal receiver 103 recovers signal and can realize by the differential received circuit.
Video output signals sync control device in this embodiment, because what use when each video signal preprocessor and video output driver processing signals is to recover clock signal and synchronizing signal from same clock signal and synchronizing signal, clock signal and synchronizing signal when therefore each video signal preprocessor and video output driver signal are processed can realize Complete Synchronization, do not have time-delay, so each picture output device can be realized Complete Synchronization.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, make without departing from the concept of the premise utility some substituting or obvious modification, and performance or purposes are identical, all should be considered as belonging to protection range of the present utility model.
Claims (1)
1. a video output signals sync control device comprises a plurality of picture output devices, and each picture output device includes video signal preprocessor (104) and video output driver (105); It is characterized in that: a picture output device in described a plurality of picture output devices also comprises video synchronization signal generator (101) and synchronization signal transmitter (102), and each described picture output device all also comprises synchronous signal receiver (103); The control end of described video synchronization signal generator (101) connects the synchronous locking signal output of outside video signal source (3), the clock signal output terminal of described video synchronization signal generator (101) and synchronous signal output end connect respectively clock signal receiving terminal and the synchronizing signal receiving terminal of described synchronization signal transmitter (102), the signal output part of described synchronization signal transmitter (102) connects respectively the signal receiving end of each described synchronous signal receiver (103), described synchronization signal transmitter (102) is used for that the clock signal of described video synchronization signal generator (101) output and synchronizing signal are converted to signal transmission and exports each described synchronous signal receiver (103) to, and each described synchronous signal receiver (103) is used for recovering to produce described clock signal and described synchronizing signal from described signal transmission; In each described picture output device, the clock signal output terminal of described synchronous signal receiver (103) connects the clock signal input terminal of described video signal preprocessor (104), and synchronous signal output end connects respectively the synchronous signal input end of described video signal preprocessor (104) and video output driver (105).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269619 CN202696738U (en) | 2012-06-08 | 2012-06-08 | Video output signal synchronous control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220269619 CN202696738U (en) | 2012-06-08 | 2012-06-08 | Video output signal synchronous control device |
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| CN202696738U true CN202696738U (en) | 2013-01-23 |
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| CN 201220269619 Expired - Fee Related CN202696738U (en) | 2012-06-08 | 2012-06-08 | Video output signal synchronous control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087590A1 (en) * | 2018-11-02 | 2020-05-07 | 上海极清慧视科技有限公司 | Data transfer device, data acquisition device, system, and method |
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2012
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020087590A1 (en) * | 2018-11-02 | 2020-05-07 | 上海极清慧视科技有限公司 | Data transfer device, data acquisition device, system, and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20210608 |