Television – Receiver circuitry
Patent
1997-09-30
1999-08-03
Faile, Andrew I.
Television
Receiver circuitry
4551923, 375344, H04L 2706
Patent
active
059332000
ABSTRACT:
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.
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Faile Andrew I.
Le Uyen
Samsung Electronics Co,. Ltd.
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