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. 07, 2012
Filed:
Jan. 10, 2008
Chin-wang Tu, Cupertino, CA (US);
Shih Chang Wang, Chung-Ho, TW;
Chen-ho Wu, Los Altos Hills, CA (US);
Chin-Wang Tu, Cupertino, CA (US);
Shih Chang Wang, Chung-Ho, TW;
Chen-Ho Wu, Los Altos Hills, CA (US);
Leotek Electronics Corporation, Lung-Tan, TW;
Abstract
A method and apparatus for adjusting the drive signal of an LED luminaire is provided and includes an LED light source assembly, an ambient sensor circuit, a comparator circuit, and a driver circuit. The ambient sensor circuit provides an ambient signal to the LED light source assembly, which is a function of the ambient (such as temperature, humidity or air visibility) proximate to the LED light source assembly. The comparator circuit provides a bidirectional ambient adjustment signal to the driver circuit, which is a function of the ambient signal and a reference signal. And the driver circuit provides an adjustable drive signal to the LED light source assembly, which is a function of the bidirectional ambient adjustment signal.