Keypads with multi-function keys
US7164087B2 · kind B2 · utility
3Cited by
10References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 2003 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2239/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A keypad has keys (12) protruding through a housing (18) with at least one at-a-distance sensor (20) located approximately equidistant between each adjacent set of keys (12). Each key (12) has a tactile feedback element (32) located below and a primary graphic (10) displayed above. Graphics identifying additional functionality (14) are disposed off-center to primary graphic (10). Locator nubs (16) are located approximately equidistant between each adjacent set of keys (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.