Patent ID: 7330217
Filing Date: 2008-02-12
Classification: H04N

Abstract:
1. Chrominance phase error correction circuitry comprising: a demodulator for demodulating a received video color burst signal into first and second demodulated signals; signal generation circuitry for providing to the demodulator an uncorrected demodulating signal for demodulating the video color burst signal, wherein the signal generating circuitry comprises a phase locked loop receiving the video color burst signal and in response generating the uncorrected demodulating signal locked in phase and frequency with the color burst signal; and phase correction circuitry for detecting a phase error from the first and second demodulated signals and varying a phase of the uncorrected demodulating signal relative to the phase of the video color burst signal to provide a corrected demodulating signal for demodulating a video chrominance signal with the demodulator during an active video period.