Key input means with changeable display means for displaying key functions
US4803463A · kind A · utility
26Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1986 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Dec 17, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An input device comprises key input means having a plurality of keys, specifying means for specifying functions of the plurality of keys of the key input means and display means for displaying key denominations representing the key functions specified by the specifying means. The key input means includes a transparent keyboard arranged on the display means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.