Biometric object sensor and method
US9137438B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Sep 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/611
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A biometric image sensor system and method is disclosed which may comprise a first light source having a first wavelength λ1, a second light source having a second wavelength λ2, a photodetector configured and positioned to receive light of the first wavelength λ1 and light of the second wavelength λ2 reflecting from a biometric object being imaged and to produce a first output indicative of the amount of reflectance of the light of the first wavelength λ1 and a second output indicative of the amount of reflectance of the light of the second wavelength λ2, and a computing device configured to compare the difference between the first output and the second output with an authenticity threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.