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Symbol entry system and methods

  • US 6,144,378 A
  • Filed: 02/11/1997
  • Issued: 11/07/2000
  • Est. Priority Date: 02/11/1997
  • Status: Expired due to Term
First Claim
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1. A symbol entry tool for use on a graphical display surface, comprising:

  • a symbol chart having a plurality of symbols that can be selected by a user;

    the symbols of the chart being arranged to form a plurality of approximately concentric rings around a symbol entry area, extending from an inner ring to an outer ring, wherein less than all of the rings are initially displayed;

    a visible focus that is responsive to user commands to move among the symbols;

    wherein moving the visible focus from a symbol in one ring to a symbol in a more outward ring causes an additional outward ring to be displayed.

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