Water rejection and wet finger tracking algorithms for truetouch panels and self capacitance touch sensors
US8982097B1 · kind B1 · utility
261Cited by
7References
20Claims
0Family size
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Key dates
| Filing date | Mar 26, 2014 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Mar 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus, and system to detect a self-capacitance activation in view of a self-capacitance measurement of a first electrode. The method, apparatus, and system further to detect a mutual capacitance activation in view of a mutual capacitance measurement of a pair of electrodes, and to determine the presence of water proximate to the capacitive button when the self-capacitance activation is false and the mutual capacitance activation is true. The capacitive button is disposed on a substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.