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:
Dec. 27, 2005
Filed:
Feb. 07, 2002
Applicant:
Minoru Sudo, Chiba, JP;
Inventor:
Minoru Sudo, Chiba, JP;
Assignee:
Seiko Instruments Inc., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G003/32 ;
U.S. Cl.
CPC ...
Abstract
An LED drive circuit having reduced power consumption has a constant current generating circuit for driving a plurality of LEDs and at least one switch connected to a respective LED for periodically turning on and off the respective LED at a rate higher than a visual perception rate to reduce power consumption.