Position indicator
US8350166B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Jun 26, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03545
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A position indicator comprises a case having a housing portion and an opening; a rod with a substantially bar-like body and an end and housed in the housing portion such that the end of the rod protrudes outside the case through the opening; and a sealing member attached to the opening and having an aperture into which the rod is inserted such that a gap between the aperture and the rod is sealed. A position detecting system comprises a position detecting device having a plurality of superimposed coils, a processing unit; and a position indicator. When the indicator approaches the position detecting device, a signal is induced by one of the coils, and the processing unit determines a position of the indicator based on the signal and a coordinate of the coil that induced the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.