Finger position sensing methods and apparatus
US7463756B2 · kind B2 · utility
96Cited by
28References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2005 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Aug 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1335
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A finger position sensing apparatus, typically used in a fingerprint sensing system, includes a position pickup plate disposed generally orthogonally with respect to an expected direction of movement of a finger and a plurality of position drive plates having different spacings from the position pickup plate to define plurality of position sensor gaps between respective position drive plates and the position pickup plate. The position drive plates are dimensioned and spaced from the position pickup plate to sense the bulk of a finger rather than fingerprint features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.