Data input device
US7242388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2001 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Oct 14, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/96046
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data input device and method including an illuminator (106) operative to illuminate at least one engagement plane (102) by directing light along the at least one engagement plane, a two-dimensional imaging sensor (112) viewing the at least one engagement plane from a location outside the at least one engagement plane for sensing light from the illuminator (106) scattered by engagement of a data entry object (110) with the at least one engagement plane and a data entry processor receiving an output from the two-dimensional imaging sensor (112) and providing a data input to utilization circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.