Touch detection method of a touch detection device for obtaining a calibrated variation for determining whether a touch event has been triggered
US10203805B2 · kind B2 · utility
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6References
19Claims
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Key dates
| Filing date | Dec 8, 2016 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Mar 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch detection method includes outputting a first signal via an output terminal of a processing unit; receiving a second signal via an input terminal of the processing unit where a voltage level of the second signal corresponds to a voltage level of the first signal, a first capacitance of a first capacitor and a second capacitance of a second capacitor; performing a calibration calculation to the variation of voltage level of the second signal by using a calibration parameter for obtaining a calibrated variation; and determining a touch event has been triggered if the calibrated variation has passed a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.