The video matrix switching is a high -performance intelligent matrix device designed to make audio and video signals more in line with user needs for input and output switching. Even so, many users are still not very clear about the principle of the video matrix switch, so that in the actual operation process, the signal connection between the devices is not very clear. Here is a brief introduction to the working principle and related knowledge of the video matrix switch.
In fact, the video matrix switch is the shell equipment wrapped in the chassis from the outside. We can’t see the complex circuit connection lines inside. However, there are scalable multi -way video inputs, multi -way video output line boards, and multiple control chassis. The most critical is a core chip that can switch signals. Signal input output selection. The internal complex processing performance is different from the number of signal input and output interfaces.
The matrix switch is to transmit all the way or multi -road video and audio signals to one or more display devices, such as two computer hosts to share one display. The matrix switch can output the content on the two computer hosts to the same or more display. The matrix switch is a type of device that switches multi -road signals. According to different signal types, many categories can be divided into many categories, such as HDMI digital matrix, VGA matrix, AV matrix, mixed matrix (relative to single signal matrix equipment internal lines are more complicated, you can control a variety of signals at the same time, no need to switch device back and forth), etc.; There are many similarities in the work principle of equipment. When we select and use the video matrix switch, the key is to select the right signal type, the number of input and output interfaces, and then connect the good matrix according to the correct requirements.
In terms of switching principle, there are many ways to choose. The easiest way is to directly connect the signal line together, such as the wiring board, and the use of the output signal line to jump on the input signal line. You can also complete the selection, or use The key switch is connected and disconnected. Of course, this is manually operated, mechanical, and no technical problems such as indicators, so it is not used as a matrix switch to discuss. The second method can also be used to complete the selection by using relay, using the level to control the interruption of relay, the disconnection and connection between the output cable and the input signal, and the selection of the signal can also be completed. The third method is to follow the circuit according to the circuit In principle, the internal circuit of the chip is turned on and closed, and the selection of the signal can be controlled by the level.