Keyboard for mobile device
US7953448B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2006 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Jun 15, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72427
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A keyboard for a mobile device 400 having a processor 618 for interpreting signals comprises a plurality of keys 410-424 and corresponding indicia including keys associated with alphabetic characters corresponding to an array of letters A-Z. The keys 410-419 that are associated with alphabetic characters number fewer than twenty-six and correspond to one of a QWERTY, QWERTZ, AZERTY, or DVORAK key arrangement. Each of the plurality of keys 410-424 have multiple input surfaces and are arranged in an array of rows and columns that include a first outer column, at least one middle column, and a last outer column. The first and last columns of keys are operable to input at least three different signals to a processor 618 of a mobile device 400 depending upon what input surface of the key 410-424 is pressed. A middle column of keys is operable to input at least five different signals to a processor 618 depending on what input surface of the key 410-424 is pressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.