Video signal sub-carrier monitoring unit for video signal processing system, has frequency compensator determining compensation frequency based on variation of compensation phase that is determined by phase compensator

摘要

The monitoring unit has a phase comparator (331) to monitor phase of a chrominance burst signal (CBS) based on supposed phases. A phase compensator (332) determines a compensation phase based on the monitored phase. A frequency compensator (333) determines a compensation frequency based on a variation of the compensation phase. The comparator monitors the phase in considering a frequency variation provoked by the compensation frequency. Independent claims are also included for the following: (A) a system for processing video signal has a sub-carrier monitoring unit (B) a method for processing a video signal.