Keyboard with integrated and numeric keypad
US8350728B2 · kind B2 · utility
5Cited by
242References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2010 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Apr 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M11/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A keypad includes a plurality of keys, and a processor that is coupled to control use of the keypad, including to enable use of the keypad in each of a letter entry mode or an alternative entry mode. The plurality of keys include a subset of keys, each key in the subset being (i) enlarged as compared to other keys of the keypad that are not part of the subset, (ii) assigned m letter values for when the keypad is operated in the letter entry mode, and (iii) assigned n numeric values, where 1≦n<m, for when the keypad is operated in the alternative entry mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.