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. 17, 1989
Filed:
Apr. 06, 1987
Applicant:
Inventors:
John W Stoughton, Indianapolis, IN (US);
Charles B Neal, Zionsville, IN (US);
Assignee:
RCA Licensing Corporation, Princeton, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H04N / ;
U.S. Cl.
CPC ...
358169 ; 358161 ;
Abstract
In a television receiver, an output signal from a binary rate multiplier (BRM) is used to control the amplitude of a video signal and thereby the contrast of a displayed image. Contrast control in response to ambient lighting conditions is accomplished by means of a light dependent resistor which modifies the output pull-up voltage of the BRM.