What is the function of S terminal interface
1. Definition
S terminal (separatevideo), also known as supervideo. S-Video is the most common terminal. The S-Video connection specification is developed by the Japanese. S refers to seperate, which separates the brightness and chroma for output, so as to avoid the mutual interference between brightness and chroma during the output of mixed video signals. s terminal In fact, it is a five core wire composed of two video brightness signals, two video chroma signals and a common shielded ground wire. Compared with AV interface, Y / c mixed transmission is no longer carried out, so bright separation and decoding operations are not required. Independent transmission channels are used, which greatly avoids image distortion caused by signal mixing in video equipment and greatly improves image definition.
Through s terminal With the connection of the interface, you can enjoy more stable and higher definition video pictures. It is worth noting that there have been cheap s in the market recently terminal Connecting wires, these connecting wires have greatly damaged our TV and projector equipment, so when purchasing s-terminal connecting wires, we should pay special attention not to buy these inferior products. As a new port, port is also facing this great challenge. In the future, s port will be innovated and developed.
2. Function
Tape s on computer terminal TV, output computer pictures. On TV, there is a circuit called chroma decoder. Its function is to decompose the received video signal into chroma signal and brightness signal, and then output the two signals to the TV display tube respectively. The quality of chroma decoder has a great influence on the picture effect of the whole TV. Poor quality chroma decoder will make the color recovery of TV incorrect, produce color deviation, and even produce creeping lines at the boundary of two color sound. The quality of chroma decoder is often not ideal. Therefore, many high-quality video disks now have built-in chroma decoders, and the output picture is not affected by TV quality. The advantage of this is that the chrominance signal and luminance signal in the chrominance signal in the video signal are then transmitted to the TV through the S terminal line.
There is a circuit in the TV called chroma decoder, which is responsible for decomposing the received video signal into chroma signal and brightness signal, and then outputting the signals of these two parts to the TV display tube respectively. The quality of chroma decoder has a great influence on the picture effect of the whole TV. Poor quality chroma decoder will make the color recovery of TV incorrect, produce color deviation, and even produce creeping lines at the boundary of two color sound. The quality of chroma decoder is often not ideal. Therefore, many high-quality video disks now have built-in chroma decoders, and the output picture is not affected by TV quality. The advantage of this is that the chrominance signal and the luminance signal in the chrominance signal in the video signal are then transmitted through s terminal The cable is sent to the TV.
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