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:
Feb. 11, 1992
Filed:
Feb. 20, 1990
Applicant:
Inventor:
Vincent C Harradine, Basingstoke, GB;
Assignee:
Sony Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ; H04N / ; G03F / ;
U.S. Cl.
CPC ...
358 27 ; 358 32 ; 358 34 ; 358 80 ; 358164 ;
Abstract
A digital color corrector for a color component of a video signal is operable to effect gamma, gain and black level correction. The gamma correction k is applied to a multiplier receiving the input signal E. Black level correction B is applied to an adder, and further arithmetic circuits are provided together with gain correction A to implement the equation