Position detecting apparatus and method for detecting position pointing device
US6005555A · kind A · utility
107Cited by
7References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1997 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Apr 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A position detecting apparatus capable of detecting position pointing devices of any combination simultaneously out of plural position pointing devices, thereby providing a user a friendly apparatus. A frequency of a resonance circuit provided inside a position pointing device is set by a command signal transmitted from a tablet, causing plural position pointing devices placed on the tablet to have a different frequencies, thereby suppressing electromagnetic interference among position pointing devices on the tablet, so that a simultaneous detection becomes available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.