Finger detection with auto-baseline tracking
US10229304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | Mar 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/044
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device and system for automatically tracking a baseline input into a biometric sensor is provided. The device and system include a processing system with an amplifier having an input terminal and an output terminal for producing an output signal based on the input signal received by the input terminal. The processing system further includes at least one signal conditioning element coupled to the input terminal of the amplifier and configured to condition a compensation signal, and the processing system further includes a control circuit that adjusts one or more signal conditioning parameters of the at least one signal conditioning element based on the output signal of the amplifier. The at least one input signal received by the input terminal includes a combination of the at least one compensation signal and a signal from a first set of one or more receiver electrodes of the biometric sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.