Efficient entry of characters from a large character set into a portable information appliance
US6639586B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Aug 9, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04809
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for entering characters from a large character set into a small and portable information appliance such as a mobile telephone, wherein the information appliance includes a touchpad having a touch-sensitive surface, wherein the touchpad is used to enter alphanumerical data into the information appliance, wherein the characters can come from small or large character sets, and wherein characters are entered by providing a plurality of character groups, each group having a head character assigned to a specific region, and selecting a head character enables the user to cycle forwards or backwards through each of the characters within the selected character group, and selecting the desired character by raising a finger from off the touchpad surface when the desired character is found.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.