Coordinate input apparatus
US6710767B1 · kind B1 · utility
50Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2000 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0386
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A first cylindrical lens and a first linear sensor are constructed on the X axis, a second cylindrical lens and a second linear sensor are constructed on the Y axis, the X and Y axes are orthogonal, and the image width of a beam spot formed by each of the first and second cylindrical lenses is larger than each pixel of the corresponding first and second linear sensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.