Fingerprint sensing using measuring configurations with different principal directions of extensions
US10474873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | Feb 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1376
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of determining a representation of a fingerprint pattern of a finger using a fingerprint sensor comprising a two-dimensional measuring arrangement including a plurality of measuring elements, each comprising a finger electrode spaced apart from the finger by a dielectric structure. For each measurement position, the method comprises the steps of: providing a first measuring element configuration with an elongated first measuring arrangement portion having a first principal direction of extension; and a first peripheral measuring arrangement portion; acquiring a first measurement value for the measurement position; providing a second measuring element configuration having an elongated second measuring arrangement portion having a second principal direction of extension; and a second peripheral measuring arrangement portion; and acquiring a second measurement value for the measurement position. The representation of the fingerprint pattern is determined based on the first measurement value and the second measurement value for each of the measurement positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.