Automatic answering method for a vehicle radio-telephone and dev

Details Automatic answering method for a vehicle radio-telephone and dev Automatic answering method for a vehicle radio-telephone and dev

1989-05-25

1991-10-15

Brown, Thomas W.

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 63, 379 88, 379 98, H04M 164, H04M 1100

Patent

active

050581503

ABSTRACT:
An automatic answering device for a vehicle radio-telephone has a voice synthesizing circuit for synthesizing and delivering three different selectable digitally stored answering messages to callers, and a voice analyzing and synthesizing circuit for electronically processing and recording incoming messages from callers. Three modes of answering can be selected by the user and are performed under microprocessor control, for announcing only and informing callers of a number to call, for requesting callers to input DTMF key signals for representing the caller's telephone number, and for recording a caller's voice message. For each of the three modes, a different appropriate answering message is synthesized and output to the caller. The radio-telephone includes an antenna, a radio transmitter, a radio receiver, a duplexer allowing common use of the antenna for receiving and transmitting, audio receiving and transmitting circuits, a wideband data modem for decoding and digitizing received DTMF signals, and adder circuits for adding respective voice synthesis outputs of the voice analyzer and synthesizer circuit and the voice synthesizer circuit with the received and transmitted audio signals.

REFERENCES:
patent: 4468813 (1984-08-01), Burke et al.
patent: 4616110 (1986-10-01), Hashimoto
patent: 4677657 (1987-06-01), Nagata et al.
patent: 4731811 (1988-03-01), Dubus
patent: 4803717 (1989-02-01), Marui
patent: 4821311 (1989-04-01), Hashimoto

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