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Interactive voice recognition method and apparatus using affirmative/negative content discrimination

  • US 5,899,972 A
  • Filed: 09/29/1995
  • Issued: 05/04/1999
  • Est. Priority Date: 06/22/1995
  • Status: Expired due to Term
First Claim
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1. An interactive voice recognition apparatus, comprising:

  • a voice input unit to receive voice and translate the received voice into digital form;

    a voice analysis unit in communication with said voice input unit to generate characteristic voice data for the received digitized voice;

    a word detection unit in communication with said voice analysis unit to determine whether the characteristic voice data substantially matches standard characteristic voice information corresponding to pre-registered expressions and generates detected expression data in response thereto;

    an affirrnative/negative discrimination unit in communication with said voice analysis unit to characterize whether the characteristic voice data can be characterized as an affirmative or negative response and generates an affirmative/negative signal in response thereto;

    a voice comprehension and conversation control unit in communication with said word detection unit and said affirmative/negative discrimination unit to;

    interrogate a recognition mode boolean;

    receive the detected data generated by said word detection unit, determine a contextual meaning based on the received detected data, and formulate an appropriate response if the recognition mode boolean is clear;

    receive the affirmative/negative signal generated by said affirmative/negative discrimination unit and formulate the appropriate response based on the received affirmative/negative signal and prior responses if the recognition mode boolean is set; and

    reset the recognition mode boolean based on the formulated appropriate response; and

    a voice synthesizer in communication with said voice comprehension and conversation control unit to generate synthesized audio corresponding to the appropriate response formulated by said voice comprehension and conversation control unit.

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