Keyboard with a plurality of sensitive key elements
US8264382B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2008 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Nov 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9622
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a keyboard with a plurality of sensitive key elements (10, 12, 14) arranged on said keyboard according to a predetermined scheme. Each of the key elements (10, 12, 14) provides an analogue electric signal (U1, U2, U3). The analogous electric signal (U1, U2, U3) depends on the position of a fingertip. A contact surface of the key element (12) is subdivided into zones (A, B, C, D). The zones (A, B, C, D) are defined in such a way, that the zones (A, B, C, D) have different distances from the adjacent key elements (10, 14). Each zone (A, B, C, D) corresponds with a range of relationships between the signal (U2) of the key element (12) and the signal (U1, U3) of at least one adjacent key element (10, 14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.