H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/37, 352/18.5
H04N 5/76 (2006.01) H04N 9/882 (2006.01)
Patent
CA 1063231
Abstract Of The Disclosure A system is provided for compensating for signal defects such as dropouts in recorded television signals. A recovered video signal is delayed for a period of substantially one scanning line, and the delayed signal is coupled to two channels, one for the luminance and scan synchronizing information and the other for the color information. The color information is phase-reversed each time it is delayed so as to provide a proper phase relationship when reinserting the delayed information into the signal path. The two channels are recombined to provide a compensating signal which is substituted for the original video signal during a dropout. When a substantially large dropout occurs requiring several substitutions of the compensating signal, a further mode of operation is activated in which a reference signal (such as gray) is substituted for the demodulator output so as to limit the number of substitutions of the compensating signal and thereby prevent degradation of this signal and resultant disturbance to the operation of the recorder servo systems. - 1 -
235697
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