Almost all electrical equipment, such as televisions and computers, need to use the terminal line, the structure of this line is mainly to connect the terminal to both ends of the line, to conduct electricity and transmit signals. Almost all televisions display images because of such wires. Although the TV is with its own picture tube, but if you want the TV to show the image, it is really inseparable from this line.
The TV station transmits the image signal to the TV set-top box through various signal transmission equipment, and then transmits it to the TV through the set-top box. There is a part called the decoder of the video signal inside the TV, and the decoder splits the received video signal into two parts, one part is the sound signal, and the other part is the color signal. These two parts of the signal are then transmitted to the display screen of the TV through the terminal line.
This wire is only responsible for the transmission of color signals, sound signals need to be transmitted through another way. After some special processing to display the image on the display screen, so the advantage of separate transmission is to ensure the clear quality of the picture, now many high-definition TV is through such separate transmission to ensure the high-definition picture quality.
In addition, the video signal of some domestic TV stations has a certain frequency, although different TV stations have different frequencies, but there is a certain range, so the manufacturing of the terminal line has very strict requirements, must meet the regulations to be applied to electrical appliances. Many computers on the market have their own graphics card, graphics card is also with some video output functions, if you want to output successfully this wire is also essential.
