A channel scanning method for reducing scanning time of a channel in automatic channel memory of TV, VCR, or other video appliance is disclosed. To reduce the scanning time, a microcomputer detects synchronization signals for 300 ms after transmitting frequency data for broadcasting channel to tuner...http://www.google.fr/patents/US5299011?utm_source=gb-gplus-shareBrevet US5299011 - Method of and apparatus for channel scanning
