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System and method for automatically selecting among a plurality of input modes

  • US 5,210,689 A
  • Filed: 12/28/1990
  • Issued: 05/11/1993
  • Est. Priority Date: 12/28/1990
  • Status: Expired due to Term
First Claim
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1. A continuous input device for use in a sequential word generation system, the continuous input device providing input of a plurality of polysemous symbols, in selected sequences, to access prestored words and concurrently providing input of a plurality of alphabetic characters, in selected sequences, corresponding to non-prestored words, without the need of a mode selection key utilizable solely for selection among a plurality of input modes, the device comprising:

  • key input means, including a plurality of keys corresponding to both polysemous symbols and alphabetic characters, for, upon key activation, inputting corresponding polysemous symbols and alphabetic characters;

    storage means, operatively connected to said key input means, for sequentially storing input polysemous symbols as a symbol sequence and for separately and concurrently sequentially storing input alphabetic characters as a character string;

    comparison means, operatively connected to said storage means, for comparing said stored symbol sequence, upon storage of each polysemous symbol in the stored symbol sequence, to a plurality of predetermined symbol sequences to determine a symbol sequence match; and

    input mode automatic selection means, operatively connected to said storage means, comparison means, and key input means, for automatically selecting a symbol mode and utilizing said stored input symbol sequence to subsequently access stored information for subsequent output upon said comparison means determining a symbol sequence match and for automatically selecting a character mode and utilizing said stored input character string upon the input symbol sequence being of a predetermined length and upon said comparison means not determining a symbol sequence match.

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