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SUPPRESSION OF LUMINANCE SIGNAL CONTAMINATION OF CHROMINANCE SIGNALS IN A VIDEO SIGNAL PROCESSING SYSTEM
SUPPRESSION OF LUMINANCE SIGNAL CONTAMINATION OF CHROMINANCE SIGNALS IN A VIDEO SIGNAL PROCESSING SYSTEM
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机译:视频信号处理系统中色度信号的亮度信号污染的抑制
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RCA 72,017SUPPRESSION OF LUMINANCE SIGNALCONTAMINATION OF CHROMINANCE SIGNALSIN A VIDEO SIGNAL PROCESSING SYSTEMAbstract of the DisclosureApparatus in a video signal processing system forimproving the quality of a reproduced color image byreducing visible "cross-color" interference caused whenhigh frequency luminance signals occur within the passbandof the chrominance component of the video signal. Videosignals within the chrominance passband are sensed by asignal multiplier responsive to the video signal and to thevideo signal delayed by a given amount. The amount ofdelay corresponds to an interval during which rapid lumi-nance transitions capable of producing the high frequencysignals within the chrominance passband can occur. Themultiplier generates a control signal indicative of thepresence of the luminance transitions, which is thenutilized for controlling the chrominance signal processingchannel such that objectionable cross-color effectsotherwise visible in a reproduced image are reduced oreliminated.
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