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:
Nov. 22, 1983
Filed:
May. 27, 1980
Applicant:
Inventor:
Adel A Ahmed, Clinton Township, Hunterdon County, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340782 ; 340753 ; 340761 ; 307270 ; 330278 ; 330307 ;
Abstract
A plural-output switched current source, as may be used to provide current drive to inidividual display segments of an LED display. Each respective current source output is selectively operable from a respective low level I.sup.2 L signal source. Means are provided to reduce the tendency of the selective operation of one LED display segment to affect the brightness of the remaining LED display segments.