The common color television picture intermediate frequency ( PIF) signal with sound intermediate frequency ( SIF) signal are handled in the same passage, and the way of the adoption line alternation scanning to dissolve the big area in picture gleams phenomenon. 普通彩色电视机图像中频信号和伴音中频信号是在同一通道中进行处理的,并采用隔行扫描的方式来消除图像大面积闪烁现象。