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:
Apr. 07, 2009
Filed:
Jul. 13, 2006
Shu-ming Chang, Hsinhua, TW;
Yu-pei Huang, Hsinhua, TW;
Shen-yao Liang, Hsinhua, TW;
Shwang-shi Bai, Hsinhua, TW;
Shu-Ming Chang, Hsinhua, TW;
Yu-Pei Huang, Hsinhua, TW;
Shen-Yao Liang, Hsinhua, TW;
Shwang-Shi Bai, Hsinhua, TW;
Himax Technologies Limited, Tainan County, Taiwan, CN;
Abstract
A lamp driving device has a pulse width modulation circuit, a phase splitter and several switching circuits. The pulse width modulation circuit is arranged to generate a pulse width modulation signal. The phase splitter is coupled to the pulse width modulation circuit and arranged to split the pulse width modulation signal into several phased signals having different phases, wherein pulses of each phased signal are non-overlapping with those of another phased signal. The switching circuits are coupled to the phase splitter and are arranged to respectively receive one of the phased signals, wherein each switching circuit is controlled by the received phased signal.