Cordless digital graphics input device
US4550250A · kind A · utility
196Cited by
16References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1983 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Nov 14, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0304
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cordless graphics input device system for use with a computer. The device comprises an infrared emitting module useable on any surface adjacent a detector having a pair of patterned concave sensors. Coordinate information is determined via a detector contained microprocessor relative to the sensed analog position data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.