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:
May. 17, 1988
Filed:
Mar. 09, 1987
Applicant:
Inventors:
Fujio Shirai, Tokyo, JP;
Takahiro Fuse, Tokyo, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 / ; 358 27 ; 358 32 ; 358 59 ; 358179 ; 358236 ;
Abstract
A circuit is disclosed which, in order to perform a faithful color reproduction, controls the level of a color video signal on a liquid crystal television receiver by uniformly amplifying primary color signals R, G and B in accordance with an average of composite color video signal and, after passing through a clamping circuit to obtain an aligned pedestal level, subjecting them to A/D conversion.