Coordinate input device and its control method, and computer readable memory
US6906702B1 · kind B1 · utility
120Cited by
20References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 16, 2000 |
| Grant date | Jun 14, 2005 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0425
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device has a plurality of linear sensors which are arranged for at least one coordinate axis and detect the beam spot. The levels of detected data are measured by a sensor controller, and the measured levels are compared. Based on the comparison result, the detection result of one of the plurality of linear sensors is selected. A coordinate computation unit outputs a coordinate value corresponding to the beam spot on the basis of the selected detection result. The light-receiving areas of the linear sensors have an overlapping portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.