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:
Jul. 22, 2014
Filed:
Dec. 05, 2012
Applicant:
Richtek Technology Corporation, Chupei, TW;
Inventors:
Shei-Chie Yang, Wur Township, Taichung County, TW;
Shui-Mu Lin, Longjing Township, Taichung County, TW;
Jun-Sheng Cheng, Kaohsiung, TW;
Ming-Yu Lin, Tainan, TW;
Chun-I Lin, Yangmei, TW;
Assignee:
Richtek Technology Corp., Chupei, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
LED dimming control circuit and method compensate LED current or LED average current by LED characteristics to improve dimming efficiency and performance. LED characteristic related look-up tables are stored to provide compensation values, and input LED current setting information is compensated by the compensation values to generate corrected LED current setting information for determining LED brightness.