H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/62
H04N 7/087 (2006.01) H04N 5/10 (2006.01) H04N 17/04 (2006.01)
Patent
CA 1093204
38-TR-9447 ABSTRACT OF THE DISCLOSURE A VIR signal detector circuit for a color television receiver identifies the repetitive reception of a VIR color information signal on a predetermined horizontal line of video signal. The detection is accomplished with minimum interference from Gaussian and pulse-type noise to assure that VIR color control circuits in the receiver are activated only upon receipt of an actual VIR signal. The VIR signal detector operates by generating a viewing pulse of very short duration each horizontal line in which a VIR signal may be transmitted. An accumulator, set to respond to a predetermined number of simultaneous detections of the viewing pulse and a video signal exceeding a predetermined value, generates a control signal indicating that a VIR signal is being received.
288495
Banker Robert O.
Brown Charles T.
Ghaem-Maghami Sanjar
Holshouser Howard E.
Wachter Kenneth J.
Company General Electric
Eckersley Raymond A.
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