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:
Aug. 16, 2011
Filed:
Apr. 16, 2010
Chen Yi Huang, Taichung, TW;
Te Sheng Tseng, Taichung, TW;
Chao Yang Chen, Taichung, TW;
Wen Hung Hsu, Taichung, TW;
Chen Yi Huang, Taichung, TW;
Te Sheng Tseng, Taichung, TW;
Chao Yang Chen, Taichung, TW;
Wen Hung Hsu, Taichung, TW;
Largan Precision Co., Ltd., Taichung, TW;
Abstract
A driving circuit for a photographing module includes a load comprising three coils and four signal input ends; a power source configured to drive the coils and capable of providing an intermediate level between a supply voltage level and a ground level; and a set of electronic switch elements. The driving circuit controls the magnitudes and directions of the electric currents flowing through the coils by switching the set of electronic switch elements, thereby enabling the photographing module to perform auto-focusing and compensate for an angle of inclination.