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. 04, 2012
Filed:
Dec. 22, 2010
Shih-chieh Wang, Hsinchu, TW;
Chiu-lang Lo, Hsinchu, TW;
Pu-ju Su, Hsinchu, TW;
Yu-huan Tsai, Hsinchu, TW;
Shih-Chieh Wang, Hsinchu, TW;
Chiu-Lang Lo, Hsinchu, TW;
Pu-Ju Su, Hsinchu, TW;
Yu-Huan Tsai, Hsinchu, TW;
Weltrend Semiconductor Inc., Science-Based Industrial Park, Hsinchu, TW;
Abstract
A two-wired LED light adjusting system, for controlling the luminance adjustment for a LED lamp module. The light adjusting circuit includes a phase modulating circuit, a LED driving circuit and a controller. The phase modulating circuit generates a phase modulating voltage. The controller detects the phase modulating voltage of various waveforms. When the controller detects the phase modulating voltage of different waveforms, the controller controls the LED driving circuit to enable the LED lamp module to emit light of different luminance according to waveforms of the phase modulating voltage.