Smart scanning for a capacitive sensing array
US9013441B2 · kind B2 · utility
5Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2011 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Mar 27, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/041661
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus scan a plurality of scan groups in a capacitive sense array to generate signals corresponding to a mutual capacitance between the electrodes. Each of the plurality of scan groups is formed from a subset of the plurality of electrodes. A processing device identifies a scan group where the generated signal is affected by a presence of a conductive object. The processing device individually scans the subset of the plurality of sense elements in the identified scan group to determine a location of the conductive object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.