Finger sensing apparatus using image watermarking and associated methods
US9053351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2007 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | Feb 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/37
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A finger sensing device may include an integrated circuit (IC) substrate, an array of finger sensing elements on the IC substrate, and image watermark circuitry on the IC substrate and cooperating with the array of finger sensing elements for generating finger image data with an image watermark embedded therein. The finger sensing apparatus may also include match circuitry on the IC substrate for performing finger matching based at least upon the image watermark. The array of finger sensing elements may include an array of finger sensing pixels. The image watermark circuitry may distort values from the array of finger sensing pixels to generate the finger image data with the image watermark embedded therein. The watermark circuitry may distort position values from the array of finger sensing pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.