Input device
US4696048A · kind A · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An input device has a matrix input unit having a plurality of switches for inputting a pattern, a signal generator for generating signals identifying the actuation of the switches, and a discriminator responsive to the signals from the signal generator to discriminate the actuated one of the switches. The discriminator discriminates the actuated switch by checking an interval of the signals from the sequentially actuated switches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.