Tablet position digitizer
US5414226A · kind A · utility
8Cited by
13References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Feb 19, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/046
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In this digitizer, when the coil of the position indicator is placed near a plurality of conductors of the tablet, an oscillator arrangement is formed through the amplifier, and a position indicated by the position indicator is determined by detecting magnetic fields generated by the position indicator when the oscillator arrangement oscillates. In addition, when the position indicator is placed near the tablet, an oscillator arrangement is constituted by the position indicator and two conductors of the tablet at a timing at which the position of the position indicator is measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.