Talking about video matrix

With the digitalization of video surveillance and the arrival of the networked era, more and more analog surveillance systems have been replaced by digital network surveillance systems. At the same time, the number of surveillance points has become more and more dense. Digital video matrix technology and products have also emerged. It receives the front-end video source through the network, uses the image decoding card to implement D/A conversion of the network video signal, and then uses the "matrix switching" software to switch the multi-channel front-end video signal. , control, and on the video wall. Some video matrices also have audio switching capabilities that enable the simultaneous switching of video and audio signals. This matrix is ​​also called video and audio matrix. The current video matrix has two major categories: analog matrix and digital matrix. Video matrix is ​​generally used for various monitoring occasions. Video switching is done at the digital video layer. This process can be either synchronous or asynchronous. The core of the digital matrix is ​​the processing of digital video. It is necessary to add AD conversion at the video input, change the analog signal to a digital signal, increase DA conversion at the video output, and convert the digital signal to analog signal output. The core part of the video switching is analog switch of the analog matrix, which will become the processing and transmission of digital video. Video matrix can be said to have been applied widely in our daily monitoring system. By switching the signal, any one input is displayed on the set display terminal, and a series of operations such as zooming in, zooming out, zooming in, zooming out the lens, and the like can be performed. This can not only play a role in monitoring, but also can largely avoid the waste of one input terminal corresponding to one input signal. This is the convenient operation of the video matrix. However, with the development of video surveillance technology in the direction of digitization, high-definition, and networking, the space for matrix products that originally occupied the market for analog video surveillance began to appear to be insufficient.