Method and apparatus to improve noise immunity of a touch sense array
US9645690B1 · kind B1 · utility
1Cited by
5References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 28, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Jul 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0446
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for improving noise immunity of capacitive sensing circuit associated with a touch sense array is disclosed. The capacitive sensing circuit receives a response signal from a touch sense array. The capacitive sensing circuit measures a noise component of the response signal. When a level of noise of the noise component within a passband of the capacitive sensing circuit is greater than a threshold, the capacitive sensing circuit changes at least one parameter of capacitive sensing circuit to move the passband substantially outside the frequency spectrum of the noise component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.