Electronic whiteboard system eraser
US6667739B2 · kind B2 · utility
9Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0488
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An eraser for use on an electronic whiteboard with a protrusion area on the erasing surface forming a convex area on the erasing surface for establishing a positive point of contact with the whiteboard; an electronic whiteboard system including such an eraser, a controller for storing data relating to information written on and erased from the whiteboard data, and a filter for preventing the storage of digital data relating to contacts with the whiteboard not attributable to normal writing or erasing actions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.