Reducing background signal in imaging sensors
US10817694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2019 |
| Grant date | Oct 27, 2020 |
| Priority date | — |
| Expiry date | Mar 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1359
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The descried techniques may support a sensing scheme for reducing background signals in imaging sensors. A device may include a sensor configured to determine ridges and valleys of a fingerprint. The sensor may include a pixel array with each pixel of the pixel array having a set of electrodes. To reduce the background signals, the device may sense, e.g., during a transmit mode, a first set of signals associated with the pixel array using at least one electrode of the set of electrodes, and sense, e.g., during a receive mode, a second set of signals associated with the pixel array using the at least one electrode. The device may reduce a background signal associated with the sensor according to the sensing of the first set of signals and the second set of signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.