电话线和局域网通常使用廉价的绞合线。如果彩色全电视信号可以在绞合线上传输,那就可以大量节省传输成本,而且可以利用现成的电话线路或局域网来传输。本电路就是为此目的而设计的。放大器IC1和IC2把输入的彩色全电视信号变为差动信号,经过绞合线传输后,由IC3把差动信号恢复成单端输出的彩色全电视信号。用差动信号进行传输可以减少线路损耗和失真,还可以 Telephone lines and local area networks usually use cheap strands. If full color television signals can be transmitted over the stranded wire, a significant reduction in transmission costs can be achieved and can be transmitted using off-the-shelf telephone lines or local area networks. This circuit is designed for this purpose. Amplifier IC1 and IC2 into the full color TV signal into a differential signal, after the transmission line through the twisted pair, the differential signal is restored by the IC3 into a single-ended output of the full color TV signal. With differential signal transmission can reduce the line loss and distortion, but also