Unambiguous capacitance sensing using shared inputs
US7965281B2 · kind B2 · utility
8Cited by
3References
27Claims
0Family size
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Key dates
| Filing date | Oct 3, 2006 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Feb 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Capacitance sensing apparatuses are described. The apparatus includes capacitance sensor elements that traverse a sensing region. The apparatus also includes sensor circuitry that has multiple inputs. More than one of the capacitance sensor elements are electrically coupled to the same input. A position of an object along an axis of the sensing region is unambiguously identified according to which subset of the inputs senses a change in capacitance that is induced when the object is proximate to the sensing region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.