Method and apparatus for asperity sensing and storage
US6941004B2 · kind B2 · utility
3Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Sep 6, 2005 |
| Priority date | — |
| Expiry date | Aug 14, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint capture device (10) has a plurality of charge storage devices (12) that couple through conductive surfaces (22) to conductive spheres (21) that are disposed within an epoxy that comprises a fingerprint contact surface (13). When raised portions of an object (26) appropriately contact certain conductive spheres (21), the corresponding charge storage device (12) will discharge. This discharging serves both to simultaneously sense the asperity features of the object and to store that sensed information as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.