Method for reducing carrier recovery time in high definition television receiver

摘要

An HDTV receiver with a reduced carrier recovery time in a communication system transmitting a carrier via a pilot signal is disclosed. The HDTV receiver includes a double conversion tuner and a carrier recovery circuit for recovering a carrier. The carrier recovery circuit determines a fast response pull-in frequency range at which a frequency offset can be speedily removed during detecting the pilot signal in the carrier. If the frequency offset detected by the carrier recovery circuit falls within the pull-in range in the speed response range, a first local oscillation frequency of the double conversion tuner is changed step-by-step so as to minimize the detected frequency offset.