COLOR PICTURE SIGNAL RECORDING METHOD AND DIGITAL PROCESSING SYSTEM

摘要

A first circuit samples a carrier chrominance signal at a smapliing frequency which is four times a chrominance subcarrier frequency and then quantitises the sampled signal to produce a first digital colour signal. A second circuit subjects the first digital colour signal to a phase shift process to produce a second digital colour signal related to a carrier chrominance signal in which the phase of a chrominance subcarrier is equivalently and seccessively shifted by approx. 90 deg. in a predetermined direction for every one horizontal scanning period.