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:
Jun. 05, 2007
Filed:
Aug. 17, 2004
Yuan-hao Huang, Hsinchu, TW;
Hsien-chih She, Hsinchu, TW;
Chun-cheng Huang, Hsinchu, TW;
Shang-yi Lin, Hsinchu, TW;
Jen-shi Wu, Hsinchu, TW;
Yuan-Hao Huang, Hsinchu, TW;
Hsien-Chih She, Hsinchu, TW;
Chun-Cheng Huang, Hsinchu, TW;
Shang-Yi Lin, Hsinchu, TW;
Jen-Shi Wu, Hsinchu, TW;
VXIS Technology Corp, Hsinchu, TW;
Abstract
A clamping system for clamping a video signal, wherein the clamping system uses a charge-pump unit in company with a digital clamping controller to clamp the potential of the video signal, prior to the video signal being input to a programmable gain amplifier and an A/D converter, so as to reach a desired level. The charge-pump unit provides two charge-pump circuits, wherein one charge-pump circuit supplies a strong burst to boost the potential of the video signal while the video signal is below a threshold value. Otherwise, the other charge-pump circuit supplies a weak burst to fine tune the potential of the video signal when the video signal has reached the threshold value.