Capacitive fingerprint sensor with quadrature demodulator and multiphase scanning
US10268867B2 · kind B2 · utility
1Cited by
17References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2018 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Jan 2, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1376
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes providing a differential signal and generating an in-phase component of the differential signal and a quadrature component of the differential signal. The method further includes generating an output signal representing a capacitance value using the in-phase component and the quadrature component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.