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.

Date of Patent:
Oct. 03, 2017

Filed:

Nov. 30, 2015
Applicant:

O2micro Inc., Santa Clara, CA (US);

Inventors:

Tiesheng Yan, Sichuan, CN;

Ching-Chuan Kuo, Taipei, TW;

Ying-Chieh Su, Xizhi (Sijhih) District, TW;

Assignee:

02Micro, Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0842 (2013.01); H05B 33/0815 (2013.01); H05B 33/0818 (2013.01); H05B 33/0827 (2013.01); H05B 33/0845 (2013.01); H05B 33/0848 (2013.01); H05B 33/0857 (2013.01); Y02B 20/346 (2013.01);
Abstract

A circuit for driving a light source includes a power converter coupled between a power source and the light source, and a controller coupled to the power converter. The power converter receives power from the power source and provides a regulated power to the light source. The controller receives a conduction status signal indicating a conduction state of a dimmer coupled between the power source and the power converter, and adjusts the brightness of the light source based on the conduction status signal. The controller also receives an operation indicating signal indicative of operation of an ON/OFF switch coupled to the dimmer, and adjusts color temperature of the light source based on the operation indicating signal.


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