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:
Feb. 26, 2013
Filed:
Aug. 23, 2010
Chia-chieh Hung, Taipei, TW;
Yen-hui Wang, Taipei, TW;
Ko-yen Lee, Taipei, TW;
Wei-chuan Su, Taipei, TW;
Chia-Chieh Hung, Taipei, TW;
Yen-Hui Wang, Taipei, TW;
Ko-Yen Lee, Taipei, TW;
Wei-Chuan Su, Taipei, TW;
Immense Advance Technology Corp., Neihu District, Taipei, TW;
Abstract
A novel LED driver controller, including: an auto-gain control unit, having an input end coupled to an input voltage signal which is derived from a line voltage, and an output end for providing a normalized signal; a comparator, used to perform voltage comparison on the normalized signal and a current sensing signal to generate a turn-off signal, wherein the turn-off signal will change state from inactive to active when the current sensing signal reaches the normalized signal; and a driving circuit, having a set input end, a reset input end, and an output end, the set input end being coupled to a turn-on signal, the reset input end being coupled to the turn-off signal, the output end being used for providing a gating signal.