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Keypad assembly with supplementary buttons and method for operating the same

  • US 20030107500A1
  • Filed: 04/18/2002
  • Published: 06/12/2003
  • Est. Priority Date: 12/12/2001
  • Status: Active Grant
First Claim
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1. A keypad assembly with supplementary buttons in a small-sized mobile communication terminal including input buttons for representing a plurality of characters and a plurality of function buttons, comprising:

  • at least one mode switching button formed on a side of the terminal for switching an input mode for inputting different characters;

    at least one selection-indication button formed on a side of the terminal for selecting and indicating one of a plurality of characters assigned to each input button; and

    a control unit for selecting and inputting 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, for displaying the selected and inputted data on a display window of the terminal and storing the data.

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