Equalized capacitive touchpad and touch positioning method
US8525801B2 · kind B2 · utility
11Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2009 |
| Grant date | Sep 3, 2013 |
| Priority date | — |
| Expiry date | Jun 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- 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 detected from a sensing line of the capacitive touchpad, to thereby offset the attenuation of the sensed value due to the impedance of the sensing line. 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.