Coordinate detecting apparatus having acceleration detectors
US5587558A · kind A · utility
193Cited by
10References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1993 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Jan 21, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A coordinate input device includes a coordinate detector which may include an acceleration detector for accurate determination of the spatial coordinates of a coordinate indicator. A three-dimensional acceleration in a first coordinate system is detected by a first acceleration detecting unit and is converted into an input coordinate system in accordance with the attitude of the coordinate indicator. The effect of gravity is removed and the acceleration is integrated to obtain the spatial coordinates of the coordinate indicator. Even if the coordinate indicator is tilted, accurate coordinate input can be performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.