Large feature biometrics using capacitive touchscreens
US9582127B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Apr 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/394
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An input device including: a display device including a first display region; a plurality of sensor electrodes configured for capacitive sensing, where the plurality of sensor electrodes overlap at least a portion of the first display region; and a processing system operatively connected to the plurality of sensor electrodes and configured to: output a placement guide graphic on the first display region, where the placement guide provides alignment indication for a feature of an input object; generate a pressure-gauge graphic based on pressure exerted on the input device by the input object; send the pressure-gauge graphic for display while the input object is still in contact with the input device; obtain, based on resulting signals received with at least one sensor electrode of the plurality of sensor electrodes, a first capacitive image including the input object; and authenticate a user based on at least the first capacitive image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.