Electronic portable pen apparatus and method
US6577299B1 · kind B1 · utility
184Cited by
26References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 1999 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Aug 18, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0428
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A wireless pen apparatus for producing signals representative of writing by a user, including: a wireless pen; a removable cap on the pen; and, when the cap is removed from the pen and placed at a reference position, communicating wave energy between at least one location on the pen and at least one location on the cap for determining the position of the at least one location on the pen with respect to the reference position of the cap, and for producing signals that depend on the determined position of the at least one location on the pen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.