Audio/telephone communication system for verbally handicapped
First Claim
1. An interface circuit for establishing direct interconnection between a digital to analog converter and a speaker, and establishing communication between a programmed computer, the digital to analog converter and a telephone line and permitting telephone communication thereover by transmitting regenerated audio messages from the digital to analog converter and receiving third-party generated telephone messages in response to a plurality of computer generated signals, comprisingfirst amplifier circuit means for receiving said regenerated audio messages, amplifying said messages and applying said amplified messages to the speaker,second amplifier circuit means for receiving said regenerated audio messages, amplifying said messages and applying said amplified messages as an output from said second amplifier circuit means,isolation circuit means for isolating the telephone line from the interface circuit,first switching means cooperating with the telephone line and said isolation circuit means and responsive to a first signal from the computer for completing the telephone line connection to a first side of said isolation circuit means, andsecond switching means cooperating with a second side of said isolation circuit means and responsive to a second signal from the computer for coupling the amplified regenerated audio messages from said second amplifier circuit means to said second side of said isolation circuit means, said second switching means further responsive to the absence of said second signal from the computer for coupling said second side of said isolation circuit means as a second input to said first amplifier circuit means.
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Accused Products
Abstract
In one exemplary embodiment, an audio/telephone communication system for verbally handicapped individuals is disclosed that comprises a programmed computer, and a matrix of touch-sensitive contacts carrying an overlay removably attached thereto and symbolically displaying for sensory perception and random selection by an operator each of a plurality of message commands associated with a preselected and prerecorded vocabulary of spoken messages, and in response to the operator selection the contact matrix generating data signals identifying the selected messages and control commands for application to the computer. An expansion memory is interconnected to the computer and has stored therein the preselected command data and digital message data representative of the message vocabulary. A digital to analog converter is provided that receives and responds to the digital message data retrieved by the computer from the memory for regenerating the selected audio messages and applying the regenerated messages to a speaker. An interface circuit establishes direct interconnection between the digital to analog converter and the speaker, and further establishes communication betweeen the computer, the digital to analog converter and a telephone line for interconnecting the system to the telephone line in response to a plurality of computer generated signals.
147 Citations
8 Claims
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1. An interface circuit for establishing direct interconnection between a digital to analog converter and a speaker, and establishing communication between a programmed computer, the digital to analog converter and a telephone line and permitting telephone communication thereover by transmitting regenerated audio messages from the digital to analog converter and receiving third-party generated telephone messages in response to a plurality of computer generated signals, comprising
first amplifier circuit means for receiving said regenerated audio messages, amplifying said messages and applying said amplified messages to the speaker, second amplifier circuit means for receiving said regenerated audio messages, amplifying said messages and applying said amplified messages as an output from said second amplifier circuit means, isolation circuit means for isolating the telephone line from the interface circuit, first switching means cooperating with the telephone line and said isolation circuit means and responsive to a first signal from the computer for completing the telephone line connection to a first side of said isolation circuit means, and second switching means cooperating with a second side of said isolation circuit means and responsive to a second signal from the computer for coupling the amplified regenerated audio messages from said second amplifier circuit means to said second side of said isolation circuit means, said second switching means further responsive to the absence of said second signal from the computer for coupling said second side of said isolation circuit means as a second input to said first amplifier circuit means.
Specification