Information display and entry device
US4814760A · kind A · utility
115Cited by
19References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Apr 30, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/047
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device for both entering and displaying information includes imaging circuitry in which a plurality of elements each has a visual characteristic which is visible at a writing surface and which depends on electrically stimulating the element via conductive circuitry, the imaging circuitry is arranged to produce electrical manifestations at the conductive circuitry in response to writing stimuli, and the device also includes control circuitry which delivers electrical signals to the conductive circuitry to form an image and converts the electrical manifestations into digital form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.