Keypad assembly with supplementary buttons and method for operating the same
US6919824B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Jul 19, 2005 |
| Priority date | — |
| Expiry date | Feb 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/72466
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is a keypad assembly with supplementary buttons and method for operating the same. The keypad assembly with supplementary buttons is in a small-sized mobile communication terminal including input buttons for representing a plurality of characters and a plurality of function buttons. The keypad assembly has at least one mode switching button, at least one selection-indication button, and a control unit. The mode switching button is formed on a side of the terminal for switching an input mode for inputting different characters. The selection-indication button is formed on a side of the terminal for selecting and indicating one of a plurality of characters assigned to each input button. The control unit selects and inputs a specific character assigned to each input button by pressing the input buttons and the selection-indication button so as to select a specific input mode by pressing the mode switching button and select and input one of a plurality of characters assigned to a specific input button under the selected input mode. The control unit displays the selected and inputted data on a display window of the terminal and stores the data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.