论文部分内容阅读
电视机一般用一根线缆与天线插座连接,这时接收到的信号是射频信号,录像机通常也可以通过射频端子连接电视机,但射频信号的画面和声音质量都较差。电视信号共包括亮度信号、色度信
The TV is usually connected to the antenna socket by a cable. At this time, the received signal is a radio frequency signal. The video frequency recorder may also be connected to the television through a radio frequency terminal, but the picture and sound quality of the radio frequency signal are poor. TV signals include a total brightness signal, chrominance signal