Video distributor
A technology for video splitter and video signal distribution, which is applied in the electronic field and can solve the problem that the video splitter cannot meet the coaxial control function.
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Embodiment 1
[0051] figure 2 This is a schematic structural diagram of a video distributor provided by an embodiment of the present invention. The video distributor includes: an analog video input module 21, an anti-control signal superimposing module 22, at least one analog video output module 23, and at least one anti-control signal extraction module 24. The number of analog video output modules 23 is the same as the number of anti-control signal extraction modules 24;
[0052] Each analog video output module 23 is used to connect to a storage device through a corresponding first coaxial cable, and each analog video output module 23 is connected to a corresponding anti-control signal extraction module 24, and the anti-control signal extraction module 24 determines Whether an anti-control signal is transmitted in the corresponding first coaxial cable, if so, extract the anti-control signal in the first coaxial cable, and send the extracted anti-control signal to the anti-control signal super...
Embodiment 2
[0060] In the above-mentioned embodiment, the anti-control signal superimposing module 22 may send the superimposed anti-control signal to the video capture device through the analog video input module 21, and at the same time, the superimposed anti-control signal may also be input through the analog video. The module 21 transmits to the analog video output module 23 corresponding to the anti-control signal extraction module 24 from which the anti-control signal is extracted, and then transmits to the anti-control signal extraction module 24, so that the anti-control signal forms a closed loop. The formation of a closed loop by the counter-control signal will cause the counter-control signal extraction module 24 to extract the counter-control signal inaccurately. In order to prevent the counter-control signal from forming a closed loop, on the basis of the above embodiment, in the embodiment of the present invention, image 3 This is a schematic structural diagram of a video dist...
Embodiment 3
[0072] On the basis of the foregoing embodiments of the present invention, in the embodiments of the present invention, Figure 7 This is a schematic structural diagram of a video distributor provided by an embodiment of the present invention. The video distributor further includes: at least one load detection module 41, wherein the number of load detection modules 41 and the number of anti-control signal extraction modules 24 the same;
[0073] Each load detection module 41 is connected to the corresponding analog video output module 23 and connected to the corresponding first module switch 32. The load detection module 41 detects whether the corresponding first coaxial cable is connected to a storage device. When storing the device, the corresponding first module switch 32 is controlled to be turned off, and the path between the video signal distribution module 31 and the corresponding analog video output module 23 is disconnected.
[0074] The analog video output module 23 can r...
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