Sensing method and calibration method for a capacitive touch panel
US9104277B2 · kind B2 · utility
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74Claims
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Key dates
| Filing date | Nov 15, 2010 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Dec 29, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Stimulus regions are defined based on the traces of a capacitive touch panel. A first signal is applied to a first trace in a first direction under a second signal applied to a second trace in a second direction to stimulate the second trace, to sense a stimulus region for an ADC value thereof. Calibration parameters for the traces are determined according to the ADC values of the traces without being touched, and are stored for later sensing the traces for position calculation and multi-finger calculation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.