Method of approximately matching an input character string with

Details Method of approximately matching an input character string with Method of approximately matching an input character string with

1992-08-17

1993-10-19

Brown, Thomas W.

Telephonic communications

Audio message storage, retrieval, or synthesis

Multilingual system or operation

379 91, 379 97, 379201, H04M 164, H04M 1108

Patent

active

052553108

ABSTRACT:
A method for approximately matching a DTMF input character string with a key word and for vocally outputting information in response to the input character string. A telephone apparatus is provided to transmit a dual tone multi-frequency (DTMF) signal by utilizing a character panel including a plurality of DTMF buttons which are arranged in order therein. An exchange apparatus intermediates the DTMF signal. A DTMF receiver apparatus converts the DTMF signal into a corresponding digital signal. A service provider terminal apparatus inputs a plurality of key words corresponding to each service name and information data to be provided. A key word storage apparatus includes a service name file unit for storing a service name file, and a key word dictionary unit for storing a key word dictionary. A text information storage apparatus stores a plurality of information data corresponding to each service name. A central processing unit converts a digital signal outputted from the DTMF receiver apparatus into an input character string to match the input character string with the key words stored in the key word storage apparatus in order to provide information data. A voice output apparatus is connected from the central processing unit for converting a digital voice data signal into a voice signal to thereby provide the desired information service to the user.

REFERENCES:
patent: 4754474 (1988-06-01), Feinson
patent: 4782509 (1988-11-01), Shepard
patent: 4817129 (1989-03-01), Riskin
patent: 4866759 (1989-09-01), Riskin

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