Talking about how to eliminate the scroll bar interference in video images

In the security monitoring project, there are often 50 Hz horizontal interference sliders on the background of video images, and each group of interference rollers consists of multiple black and white interferences (as shown in the figure above). Therefore, the acceptance cannot be passed, causing losses to the contractor. The reason is that the ground potential difference between most devices causes interference. The more the number of channels in the monitoring room (camera), the grounding of each channel will cause potential difference, interference, or mutual interference introduced by the ground between devices.

The most effective way to eliminate the interference of the scroll bar of the video image is to use the mutual isolation technology to enhance the isolation between each channel. The purpose of isolation is to isolate the two currents that need to be communicated with the other party, thus effectively eliminating the interference signal. Photoelectric isolation video distributor: its biggest advantage, with anti-interference and lightning protection. This device uses an imported high-speed linear video isolation integrated circuit, which uses optocouplers to achieve signal transmission. Its biggest feature is: increased isolation, effectively eliminating various interference signals caused by unavoidable multi-point grounding during construction. At the same time, the image signal of the front camera can be effectively isolated from the backend control device. When the front-end equipment is struck by lightning at a certain point, the lightning is effectively isolated, so that the entire system avoids devastating blows, which greatly improves the security of the system. The technology is currently a leader in its class. And the optically isolated video distributor is a new product with stable and reliable quality, so it is widely used in engineering where high security, strong anti-interference and high video requirements are required.

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