User interface device
US6924789B2 · kind B2 · utility
104Cited by
7References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2001 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Apr 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keypad (7) of a mobile telephone handset comprises a keymat (17) beneath which are disposed capacitive sensing plates (20, 21). The keypad may be used in a conventional manner to enter alphanumeric data by pressing keys (18) or as a touch pad by sliding a finger over the surface of the keymat (17).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.