Method for calibration of capacitive touch screen and capacitive touch apparatus
US9529475B2 · kind B2 · utility
2Cited by
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10Claims
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Key dates
| Filing date | Aug 27, 2013 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Jun 9, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for calibration of a capacitive touch screen and a capacitive touch apparatus are disclosed. The calibration method includes obtaining a temporary reference capacitance value of a touch detection point of the capacitive touch screen when the capacitive touch screen powers up. A first difference between a backup reference capacitance value of the touch detection point and the temporary reference capacitance value of the touch detection point is obtained and a reference capacitance value of the touch detection point is determined according to the first difference and a first preset threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.