Touch sensitive keypad with tactile feedback
US8139035B2 · kind B2 · utility
2Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2006 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | May 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/22
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keypad includes discrete keys formed by touch sensors or virtual keys on a touch sensitive area. The discrete or virtual keys are mechanically linked to a biased switch. The key that has been touched during a keystroke is identified through a signal from the touch sensors whilst a keystroke is recorded upon a signal from the biased switch. The combination of the touch sensors with a biased switch provides tactile feedback. The use of touch sensors or a touch sensitive area allows the keypad to be constructed with a substantially flush surface without parting lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.