Multi-functional ultrasonic fingerprint sensor
US10438040B2 · kind B2 · utility
5Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2017 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jun 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Some disclosed methods involve controlling an ultrasonic sensor system to transmit ultrasonic waves and receiving signals from the ultrasonic sensor system corresponding to ultrasonic waves reflected from a finger positioned on a platen. The methods may involve obtaining fingerprint image data corresponding to the signals and determining a change in a force of at least a portion of the finger on the platen corresponding to the signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.