Video blanking circuit

Details Video blanking circuit Video blanking circuit

H - Electricity

04

N

350/49

H04N 5/14 (2006.01) H04N 5/067 (2006.01)

Patent

CA 1100227

RCA 70,685 Abstract Of The Disclosure A video blanking circuit is provided which inserts a system blanking interval signal having controlled leading and trailing edges into a video signal. The blanking signal is combined with a clamped video signal in a first non-additive mixer which also provides a white clip level. The output of the first non-additive mixer is further coupled to a second non-additive mixer in which black level excursions are clipped so as to provide an output video signal having a proper system blanking interval into which synchronizing information may be added to complete the composite video waveform. - 1 -

273139

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