The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 19, 1993
Filed:
Aug. 17, 1992
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.