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. 30, 2015
Filed:
Aug. 26, 2010
Chia-hsing Lin, Hsinchu, TW;
Yi-hsin Tao, Hsinchu, TW;
Hung Nien, Hsinchu, TW;
Brian Sung, Taipei, TW;
Hsin-shieh Tsai, Changhua County, TW;
Hsuan-wen Tseng, Taipei County, TW;
Chia-Hsing Lin, Hsinchu, TW;
Yi-Hsin Tao, Hsinchu, TW;
Hung Nien, Hsinchu, TW;
Brian Sung, Taipei, TW;
Hsin-Shieh Tsai, Changhua County, TW;
Hsuan-Wen Tseng, Taipei County, TW;
ELAN MICROELECTRONICS CORPORATION, Hsinchu, TW;
Abstract
Methods are proposed for object positioning for an X-Y projected capacitive touch panel. In an embodiment, capacitance sensing under inphase excitation of traces is applied to set a base value when the capacitive touch panel is not touched and to obtain capacitances at intersections when the capacitive touch panel is touched, and the base value is compared with the measured capacitances to identify touch points. In other embodiments, X-Y projected sensing and all-point sensing are combined to reduce the amount of calculation and achieve the same positioning effect as an all-point capacitive touch panel.