Optical biometric sensor with automatic gain and exposure control
US10789450B2 · kind B2 · utility
0Cited by
29References
23Claims
0Family size
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Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Aug 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1382
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical imaging device for imaging a biometric input object is disclosed. The optical sensor includes an array of sensing elements. The optical sensor is configured to read a subset of sensing elements in the array of sensing elements; analyze the reading of the subset of sensing element to determine if one or more sensing elements of the subset is saturated; alter an operating point of the optical imaging device; and image the input object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.