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:
Jan. 31, 2012
Filed:
Aug. 13, 2009
Applicants:
Wen-kuen Vincent Liu, Hsinchu, TW;
Yi-tai Chang, Hsinchu County, TW;
Inventors:
Wen-Kuen Vincent Liu, Hsinchu, TW;
Yi-Tai Chang, Hsinchu County, TW;
Assignee:
Holtek Semiconductor Inc., Hsinchu, TW;
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); G09G 3/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses a control apparatus, which not only accepts multiple dimming control signals, but also combines the signals in analog manner. By means of this, an inevitable analog to digital converter in a conventional voltage multiple dimming control apparatus can be saved without hurting the performance of generation of pulse width modulation signals. Compared with the conventional arts, the present invention further exhibits reduction in view of chip size and power consumption.