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Audio/telecommunications system to assist in speech and cognitive skills development for the verbally handicapped

  • US 5,289,521 A
  • Filed: 03/09/1992
  • Issued: 02/22/1994
  • Est. Priority Date: 03/09/1992
  • Status: Expired due to Fees
First Claim
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1. An interface electronic circuit control unit system for use by a human user to establish bidirectional telephonic communications with a remote central computer system with a speech synthesizer running an interactive software program for applications for speech and cognitive skills development, comprisingbi-directional telephone interface circuit means for receiving incoming dual-tone multi-frequency (DTMF) control signals and synthesized voicing from a standard telephone network as well as allowing dual-tone multi-frequency control signals to be transmitted from said interface electronic circuit to said telephone network,pre-amplifier and power amplifier circuit means with an input operatively connected to said bi-directional telephone interface circuit for receiving said dual-tone multi-frequency control signals and synthesized voicing from said central computer system, amplifying said dual-tone multi-frequency control signals and synthesized voicing into amplified dual-tone multi-frequency control signals and synthesized voicing and applying said amplified dual-tone multi-frequency signals and synthesized voicing to an audio speaker and an audio output jack,dual-tone multi-frequency tone decoding circuit means with an input operatively connected to said bi-directional telephone interface circuit for receiving and decoding said dual-tone multi-frequency control signals from said central computer system into decoded dual-tone multi-frequency control signals, latching said decoded dual-tone multi-frequency control signals into a binary code, and decoding said binary code into a single bit for output prompting control,dual-tone multi-frequency tone generating circuit means with an output operatively connected to said bi-directional telephone interface circuit for generating dual-tone multi-frequency tones from touch sense switch inputs, buffering said touch sense switch inputs and decoding said touch sense switch inputs into dual-tone multi-frequency control tones that are sent to said central computer system,audio threshold level detection circuit means with an input operatively connected to said pre-amplifier circuit for detecting the presence of a said dual-tone multi-frequency control signal or synthesized voicing from said central computer system, as amplified by said pre-amplifier means, and an output operatively connected to said dual-tone multi-frequency tone generating circuit for inhibiting the output of dual-tone multi-frequency tones from said dual-tone multi-frequency tone generating circuit upon audio detection,indicating means consisting of flashing lights or beepers operatively connected to an output of said dual-tone multi-frequency tone decoding circuit for prompting said human user.

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