Capacitive sensing in displacement type pointing devices
US7889176B2 · kind B2 · utility
13Cited by
61References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2006 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | Nov 14, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0448
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pointing device includes a sense electrode structure and a displaceable member. The sense electrode structure includes an arrangement of peripheral sense electrodes in a peripheral region surrounding a central sense electrode. The displaceable member is movable in an operational zone over the sense electrode structure. The displaceable member includes a target electrode facing the sense electrodes and overlapping at least a respective portion of the central sense electrode in each position of the displaceable member in the operational zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.