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:
Oct. 20, 2015
Filed:
Aug. 09, 2013
Applicant:
Nxp B.v., Eindhoven, NL;
Inventor:
Nguyen Trieu Luan Le, Cormelles le Royal, FR;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H05B 41/282 (2006.01); H05B 41/392 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0809 (2013.01); H05B 33/0815 (2013.01); H05B 33/0848 (2013.01); Y02B 20/347 (2013.01);
Abstract
An LED controller circuit for use in an LED drive circuit in which a coil current control scheme is used to deliver power to an LED arrangement from a phase cut dimmer. The controller circuit includes means for determining, based on an analysis/signal processing of the on-time of the transistor, the dimmer characteristics, including the on state and off states of the ac dimmed voltage signal. This avoids the need for the controller circuit to process the dimmer output.
Le, Nguyen Trieu Luan. (2015). Led controller circuit (U.S. Patent No. 9167638). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9167638
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile