The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1995
Filed:
Mar. 18, 1994
Jack Craft, Bridgewater, NJ (US);
Samsung Electronics Co., Ltd., Kyungki, KR;
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.