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:
Jul. 13, 2010
Filed:
Apr. 04, 2008
Ying-nan Cheng, Taipei Hsien, TW;
Chin-biau Chung, Taipei Hsien, TW;
Ying-Nan Cheng, Taipei Hsien, TW;
Chin-Biau Chung, Taipei Hsien, TW;
Zippy Technology Corp., Hsin-Tien, Taipei Hsien, TW;
Abstract
The present invention discloses a multi-modulation mode LED driving circuit, which controls an inverter to perform energy conversion to drive at least one LED. The driving circuit of the present invention is modulated by a timing control signal containing an on time and a standby time. In the present invention, a varying-amplitude modulation energy is added to the standby time. In the present invention, the start and end of the on time respectively have a gradually-ascending interval and a gradually-descending interval, and/or the start and end of the standby time respectively have a gradually-descending interval and a gradually-ascending interval. In the present invention, two or more different cycles are mixed to generate high-reliability and wide-dynamical range modulation modes, which can make an energy conversion unit and a rear-end LED group operate in reliable ranges of some performance characteristics.