H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/57
H04N 9/12 (2006.01) H04N 9/455 (2006.01)
Patent
CA 1168352
SO1428 APPARATUS FOR INDICATING THE PHASE OF THE COLOR SUBCARRIER SIGNAL IN EACH LINE OF A COLOR TELEVISION SIGNAL ABSTRACT OF THE DISCLOSURE Apparatus is provided for indicating the phase of the color subcarrier signal present during each line of a color television signal so as to identify whether that line is odd or even. A phase detector detects the phase of the color subcarrier signal at a predetermined time following the occurrence of the horizontal synchronizing signal. The actual time at which the phase of the color subcarrier signal is detected is adjusted by an automatic phase adjustment circuit which senses relative phase shifts between the horizontal synchronizing signal and the color subcarrier signal. Preferably, the phase detector is a sampling circuit which samples the color subcarrier signal at a sampling time which is adjustable by the automatic phase adjustment circuit to as to cancel relative phase shifts between the sampling time and the color subcarrier signal.
379795
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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