Dynamic finger detection mechanism for a fingerprint sensor
US7831070B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2005 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | May 2, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/13
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an apparatus for determining the presence of a patterned object on the surface of a sensor. The apparatus comprises a sensor system coupled to a means for generating a control signal. The sensor system is configured to sense an image corresponding to the patterned object and to translate the image into image data. The means for generating a control signal generates a control signal if statistics of the image data exceed a pre-determined number of threshold levels. In a preferred embodiment, the patterned object is finger with a fingerprint on its surface and the sensor is fingerprint swipe sensor. Preferably, the threshold levels are software programmable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.