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:
Feb. 14, 2012
Filed:
Sep. 20, 2006
Wen-kai Lee, Kaohsiung, TW;
Tso-chieh Yang, Chingshuei Township, Taichung County, TW;
Chen-yao Yang, Legal Representative, Chingshuei Township, Taichung County, TW;
Wen-Kai Lee, Kaohsiung, TW;
Tso-Chieh Yang, Chingshuei Township, Taichung County, TW;
Chen-Yao Yang, legal representative, Chingshuei Township, Taichung County, TW;
Elan Microelectronics Corporation, Hsinchu, TW;
Abstract
For a compensation to the sensed capacitive values of a touchpad sensor, the variance profile of the base capacitance or the sensed capacitive values of the traces in the touchpad sensor is determined, and then a firmware operation based on the variance profile is carried out to modify the sensed capacitive values or the position value when an object touches on the touchpad sensor, such that the touchpad sensor operates as a symmetrical touchpad sensor does.