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Processor-assisted communication system using tone-generating telephones

  • US 4,650,927 A
  • Filed: 11/29/1984
  • Issued: 03/17/1987
  • Est. Priority Date: 11/29/1984
  • Status: Expired due to Fees
First Claim
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1. A system for locally presenting to a human user an alphanumeric message comprising a sequence of words received over a telephone line as a series of tone signals entered through the keypad of a remote telephone dialing device, comprising:

  • memory means comprising an addressable database of words;

    means for converting received tone signals into electrical signals, each electrical signal representing the activation of either a numeric key or a control character key on the keypad, each numeric key signal representing a single alphabetic character or number;

    means for assembling the electrical signals into a series of input units, each input unit consisting of one or more numeric key signals followed by a control key signal and representing one word in the sequence of words;

    means for sequentially addressing the database to retrieve any word or words stored therein at the location identified by each input unit; and

    means for locally outputting the message by presenting the retrieved words in a sequence corresponding to the input unit series and in a form perceptible to the human user of the system, said last named means identifying and presenting multiple words stored in any such location to permit the human user to select the most appropriate of the multiple words from the sequential context in which it is presented.

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