Light pencil
US4565999A · kind A · utility
161Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1983 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Apr 1, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04892
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cursor control system for use with a data terminal having a display consists of a radiation source and associated radiation sensor. Either the source or sensor is fixed with respect to the display while the other is moveable and may be fixed to the user's head. The system translates the motion of the user's head into a directional signal for controlling cursor position on the screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.