System for and method of determining pressure on a finger sensor
US7280679B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Jun 14, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/0338
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a system for and method of calculating pressure differences using a finger sensor. A finger sensor system in accordance with the present invention comprises a finger sensor for capturing first and second of sets of image data by contacting the finger sensor and means for providing a statistical comparison between the first and second sets of image data to determine a total pressure difference. The means for providing a statistical comparison comprises a means for generating first histogram data from the first set of image data and second histogram data from the second set of image data. The means for providing statistical data correlates peaks of the first and second histogram data and also determines differences between variances of the first and second sets of image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.