Data input device and method
US5361083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Apr 12, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2300/054
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data input device and method for producing signals corresponding to symbols, comprises: at least one manually actuatable switch having a home state and manually actuatable from the home state to one of a set of first states and manually actuatable from the set of first states to one of a set of second states including the home state. A first signal corresponding to a transition from the home state to a selected one of the set of first states is produced and a second signal corresponding to a transition from the selected one of the set of first states to a selected one of the set of second states is produced. An output signal representing one symbol is produced in response to the first and second signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.