Hand-held electronic device with a keyboard optimized for use with the thumbs
US7227536B2 · kind B2 · utility
21Cited by
125References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2003 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Apr 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2225/022
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hand-held electronic device with a keyboard optimized for use with the thumbs is disclosed. In order to operate within the limited space available on a hand-held electronic device, the present invention optimizes the placement and shape of the keys, preferably using keys that are oval or oblong in shape, and that are placed at angles designed to facilitate thumb-typing. The angles at which keys on either side of the keyboard are placed is complimentary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.