Invention Grant
- Patent Title: Equalized capacitive touchpad and touch positioning method
- Patent Title (中): 均衡电容触摸板和触摸定位方法
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Application No.: US13948002Application Date: 2013-07-22
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Publication No.: US08830201B2Publication Date: 2014-09-09
- Inventor: Chun-Chung Huang , Tsun-Min Wang
- Applicant: Elan Microelectronics Corporation
- Applicant Address: TW Hsinchu
- Assignee: Elan Microelectronics Corporation
- Current Assignee: Elan Microelectronics Corporation
- Current Assignee Address: TW Hsinchu
- Agency: Muncy, Geissler, Olds & Lowe, P.C.
- Priority: TW97110626A 20080325
- Main IPC: G09G5/00
- IPC: G09G5/00 ; G06F3/044 ; G06F3/041
Abstract:
An equalized capacitive touchpad and a touch positioning method for a capacitive touchpad use an equalizer to correct a sensed value of a mutual capacitance between two sensing lines of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the two sensing lines. Thus, the sensed values generated from different positions along a sensing line are equalized, and the touch positioning accuracy of the capacitive touchpad is improved.
Public/Granted literature
- US20130307822A1 EQUALIZED CAPACITIVE TOUCHPAD AND TOUCH POSITIONING METHOD Public/Granted day:2013-11-21
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