Chroma burst detection system

U.S. Patent Number: 5386296

Abstract: A video cassette recording (VCR) playback system includes circuitry for separating the components of a video signal to produce luminance information and color-under information. The separated color-under information is applied to the input of a variable gain control amplifier the output signal from which includes burst information at color-under carrier frequency during burst intervals. The output signal from the variable gain amplifier is applied to a rectifying circuit which is enabled during the burst interval. The burst information at color-under carrier frequency is rectified during the burst interval and peak detected to produce a control voltage which is applied to the variable gain control amplifier for controlling its gain.

Inventors: Craft; Jack (Bridgewater, NJ)

Assignee: Samsung Electronics Co., Ltd. (Kyungki, KR)

Application Number: 08/210,416

Issued: 1995-01-31

Expired: 2007-01-31

Classes: 386/9 ; 348/647

Field of search: 358/315,316,318,310 348/645,647

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