Keyboard circuit employing diodes
US9620307B2 · kind B2 · utility
1Cited by
5References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2015 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Oct 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M11/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A keyboard includes plural keys, a membrane key switch module and plural diodes. The plural diodes are disposed on the membrane key switch module, and electrically connected with plural upper contacts or plural lower contacts of the membrane key switch module. Consequently, the keyboard has the function of avoiding the ghosting problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.