Finger sensing apparatus with selectively operable transmitting/receiving pixels and associated methods
US8598555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2009 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/1306
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A finger sensing device may include an integrated circuit (IC) substrate and an array of pixels on the IC substrate. Each pixel may be selectively operable in at least a receiving mode for receiving radiation from an adjacent finger, or a transmitting mode for transmitting radiation into the adjacent finger. The finger sensing device may also include a controller coupled to the array of pixels for selectively operating at least one first pixel in the receiving mode, and while selectively operating at least one second pixel in the transmitting mode. Each pixel may also be selectively operable in a mask mode for neither receiving nor transmitting radiation. The controller may also selectively operate at least one third pixel in the mask mode while selectively operating the at least one first and second pixels in the receiving and transmitting modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.