现在,人们对数字编码前的电视信号进行取样很感兴趣,国际上已经同意演播室里的电视信号应以分量形式(Y-U-V)进行取样,每场取样图案应是正交的。并且还同意Y分量的取样速率应为各色度(U和V)分量的两倍。为了编码成数字形式而对电视信号进行取样只是建立合成信号的最后取样 At the moment, it is very interesting to sample the digital television signal before it is encoded. Internationally, it has been agreed that television signals in a studio should be sampled in the form of a component (Y-U-V), and each sampling pattern should be orthogonal. And also agree that the sampling rate of the Y component should be twice the chrominance (U and V) components. The sampling of the television signal for encoding into digital form is only the final sampling of the resultant signal