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. 22, 2009
Filed:
Sep. 01, 2004
Ajay Tripathi, Schaumburg, IL (US);
Bernd Clauberg, Schaumburg, IL (US);
Ajay Tripathi, Schaumburg, IL (US);
Bernd Clauberg, Schaumburg, IL (US);
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
A LED based lighting system () employs a LED load temperature sensor () for generating a temperature-sensing signal (TSS) indicative of an operational temperature of the LED load (), a LED current sensor () for generating a current-sensing signal (CSS) indicative of a flow of the LED current (I) through the LED load (), and a LED driver () for regulating the flow of the LED current (I) through the LED load () as a function a mixture of the current-sensing signal (CSS) and the temperature-sensing signal (TSS). The system () can further employ a driver disable notifier () and a LED driver disabler (), or alternatively, a fuse network () for disabling the LED driver () upon a detection of a fault condition of the system ().