System and method for providing a single and dual key press keypad
US9035805B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2009 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Aug 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/023
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method for receiving character entries in mobile computer devices uses an improved keypad. The keypad uses a dual key press method in which each key of the keypad includes a unique key definition when it alone is pressed. Each of two adjacent keys of the keypad also include a unique key definition when the two adjacent keys are pressed at substantially the same time. A keypad controller receives inputs from the keys and decodes the single key entries and the dual key entries. The keypad occupies a relatively small keypad area while providing full size keys for the user. The keypad also has a mode key that enables a user to change the alphabet mode of the keypad to a numerical mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.