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:
Sep. 30, 2014
Filed:
Jul. 30, 2012
Po-shen Chen, New Taipei, TW;
Chun-kuang Chen, Taipei, TW;
Feng-ling Lin, Pingtung, TW;
Hui-ying Chen, Changhua County, TW;
Po-Shen Chen, New Taipei, TW;
Chun-Kuang Chen, Taipei, TW;
Feng-Ling Lin, Pingtung, TW;
Hui-Ying Chen, Changhua County, TW;
Lextar Electronics Corporation, Hsinchu, TW;
Abstract
The invention discloses an illumination control circuit and an illumination control method. The illumination control method includes modulating an alternating current input signal and accordingly generating a dimming signal, which includes several waveform pulses each with an adjustable conduction angles; continuously sampling the waveform pulses of the dimming signal and forming an average waveform pulse from the sampled waveform pulses; extracting the average waveform pulse, which has an average conduction angle corresponding to the conduction angles of the waveform pulses; performing an integration on the sampled average waveform pulse and accordingly generating a current-controlling signal; and driving an illumination lamp according to the current-controlling signal.