Electronic device with fingerprint sensing system and conducting housing
US9489559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1376
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electronic device comprising a fingerprint sensing system including a plurality of sensing elements, each being configured to capacitively couple to a finger arranged adjacent to the sensing element and to provide a sensing signal indicative of a response to a time-varying finger excitation signal provided to the finger; and an electrically conducting housing at least partly enclosing an interior of the electronic device. The electronic device further comprises housing connection circuitry connected to the electrically conducting housing, and arranged and configured to at least intermittently allow a potential of the electrically conducting housing to follow the finger excitation signal. Hereby the housing can be used to enhance the functionality of the fingerprint sensing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.