Equalized capacitive touchpad and touch positioning method
US8830201B2 · kind B2 · utility
3Cited by
5References
13Claims
0Family size
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Key dates
| Filing date | Jul 22, 2013 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Jul 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04186
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.