Fingerprint input devices and electronic devices provided with the same
US6885439B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 6, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Nov 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To provide a fingerprint input device including a collected fiber member that is brought into intimate contact with a fingerprint surface of a finger, a planar light source for illuminating said fingerprint surface, and a two-dimensional image sensor for detecting a light reflected from the fingerprint surface and a light scattered in the finger and emitted from the fingerprint surface, the two-dimensional image sensor having a plurality of photoelectric conversion element arranged two-dimensionally on a substrate. The fingerprint input device detects a fingerprint image and a plethysmogram or acceleration plethysmogram by switching between a mode, in which electric signals produced in the plurality of photoelectric conversion elements are output simultaneously, and a mode, in which electric signals produced in the plurality of photoelectric conversion elements are output sequentially. Thus, the fingerprint input device having a simple configuration can detect the fingerprint image or the plethysmogram with high precision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.