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:
Jun. 14, 2016
Filed:
Aug. 27, 2012
Luca Bordin, Munich, DE;
Yuli Chen, Shenzhen Guangdong, CN;
Wuqiang Liao, Shenzhen Guangdong, CN;
Wei Tan, Shenzhen Guangdong, CN;
Luca Bordin, Munich, DE;
Yuli Chen, Shenzhen Guangdong, CN;
Wuqiang Liao, Shenzhen Guangdong, CN;
Wei Tan, Shenzhen Guangdong, CN;
OSRAM GMBH, Munich, DE;
Abstract
An LED control circuit for controlling an LED illuminating device is disclosed. The LED illuminating device includes at least serially connected load group, and the LED control circuit includes: a conversion module configured to convert an input voltage to an output voltage, and to output a working current as a sample current; a reference voltage generating module configured to generate a reference voltage; a control module configured to compare a sample voltage corresponding to the sample current with the reference voltage, and to output a control signal to the conversion module according to a comparison result; and a load short circuit module including a plurality of switches each connected in parallel with respective load group for performing a short circuit control on respective load group in response to a switching signal. A controlling method of such LED control circuit is also disclosed.