Keyboard apparatus
US6686905B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 19, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0238
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Herein disclosed is a keyboard apparatus which comprises a plurality of keys each including a key holder, a scan board operative to input a key holder signal of each of the key-pushed actions of the keys, a memory for memorizing a key code relevant to the key holder, a plurality of numerical keys each having a key code inputted therein and outputting a key code signal indicative of the key-pushed actions of the numerical keys, a CPU having the key holder signal and the key code signal inputted therein, and state setting means for selectively setting two operation states respectively having the key holder signal and the key code signal outputted from the CPU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.