Air/object determination for biometric sensors
US9195879B1 · kind B1 · utility
30Cited by
10References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Aug 31, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/50
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fingerprint sensing apparatus may include a fingerprint sensor system and a control system capable of receiving fingerprint sensor data from the fingerprint sensor system. The control system may be capable of determining fingerprint sensor data blocks for at least a portion of the fingerprint sensor data and of calculating statistical variance values for fingerprint sensor data corresponding to each of the fingerprint sensor data blocks. The control system may be capable of determining, based at least in part the statistical variance values, whether an object is positioned proximate a portion of the fingerprint sensor system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.