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从复合视频信号中分离出亮度信号(Y)和色度信号(C),在普通彩电中通常用带通滤波器(BPF),即在Y通道中加入一个色度载波陷波器吸收C信号取出Y信号;又在C通道中加入一个色度载波的带通滤波器,取出C信号抑制Y信号,这种方法虽简单但难以将Y、C信号彻底分离,产生色、亮信号串扰。而在一般
The luminance signal (Y) and the chrominance signal (C) are separated from the composite video signal, and a bandpass filter (BPF) is usually used in ordinary color television, that is, a chrominance carrier wave trap is added to the Y channel to absorb the C signal Remove the Y signal; C channel again by adding a chrominance carrier bandpass filter, remove the C signal Y suppression signal, this method is simple but difficult to Y, C signal completely separated, resulting in color, bright signal crosstalk. And in general