数码式电视机电路改进的方法

The Method of Improvement the Figure Television Electric Circuit

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 .数码式电视机对以上电路进行了改进 ,它采用准分离式中频系统来消除图像信号和伴音信号之间的相互干扰 ,采用逐行

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.The HDTV improves the above electric circuit,adopts quasi-separation intermediate frequency system to dissolve each other interference of the picture signal with sound singal,and line-by-line & dual-frequency scanning way to make the picture very clear.