Capacitance scanning proximity detection
US9250752B2 · kind B2 · utility
3Cited by
48References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 14, 2011 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Sep 2, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for scanning a first set of electrodes of a capacitive sense array using a first sensing mode to identify a presence of an object in proximity to the capacitive sense array, where scanning using the first sensing mode identifies objects not in physical contact with the capacitive sense array. The first set of electrodes is scanned using a second sensing mode to determine a location of the object in relation to the capacitive sense array, where rescanning using the second sensing mode determines locations of objects in physical contact with the capacitive sense array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.