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. 14, 2015
Filed:
Apr. 26, 2012
Applicants:
Chao-chi Yang, Hsinchu, TW;
Shih-how Peng, Hsinchu County, TW;
Inventors:
Chao-Chi Yang, Hsinchu, TW;
Shih-How Peng, Hsinchu County, TW;
Assignee:
Elan Microelectronics Corporation, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 27/26 (2006.01); G01D 5/24 (2006.01);
U.S. Cl.
CPC ...
G01D 5/24 (2013.01);
Abstract
A circuit and a method for sensing differential capacitance involve using plural storing capacitors to repeatedly sample charges of the differential capacitance in an over-sampling manner, and storing the charges sampled in different transfer rounds into different storing capacitors instead of repeatedly transferring charges for a single storing capacitor, so as to collect charge averages about both inputs and noises and in turn effectively reduce RF interference and source noises.