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. 03, 2013
Filed:
Dec. 22, 2010
Chun-ting Kuo, Pingtung County, TW;
Chun-fu Lin, Taoyuan County, TW;
Cheng-han Hsieh, Hsinchu County, TW;
Chun-Ting Kuo, Pingtung County, TW;
Chun-Fu Lin, Taoyuan County, TW;
Cheng-Han Hsieh, Hsinchu County, TW;
MY-Semi Inc., Hsinchu, TW;
Abstract
A driving circuit of a light emitting diode (LED), including a driving unit, a current pre-charging unit and a feedback unit, is provided. The driving unit outputs a driving power to drive the LEDs and outputs at least one first feedback signal according to the current conducted in the LEDs. The current pre-charging unit is coupled to an output of the driving unit to provide a current path to the driving unit and generates a second feedback signal. One of the at least one first feedback signal is selected to adjust the driving power when the enable signal is at a first logic level; the second feedback signal is selected to adjust the driving power when the enable signal is at a second logic level so as to maintain a current to drive the LEDs.