Telephone answering and message recording system

Details Telephone answering and message recording system Telephone answering and message recording system

1982-09-29

1985-05-21

George, Keith E.

179 614, 179 18B, H04M 350, H04M 1110

Patent

active

045188270

ABSTRACT:
An improved telephone answering and message recording system (100) having a microphone (4), an analog-digital converter (6) for converting the analog speech signal of the microphone (4) to a digital signal, a digital memory (M.sub.1, M.sub.2, M.sub.3, M.sub.4, MEM.sub.1 -MEM.sub.n) for storing the digital speech signal of the analog-digital converter (6), a digital-analog converter (7) for re-converting the digital signal of the output of the memory to an analog signal, and a speaker (5) coupled with the output of said digital-analog converter (7). The system has further a PB (push button) receiver (40) for detecting a PB code which is composed of the combination of two frequencies, and the operational mode and/or the memory to record or reproduce a speech is switched by the particular PB code. The system may operate in a first fixed answering mode in which a fixed answer recorded in the memory is transmitted to a remote subscriber, and in a second adaptive oral communication mode in which a speech recorded in the memory can be revised and/or transmitted to a remote subscriber through a telephone line. In the latter mode, two remote persons may communicate with each other through the present system even when those two persons do not call the present system simultaneously.

REFERENCES:
patent: 3728486 (1973-04-01), Kraus
patent: 3747228 (1973-07-01), Yamamoto
patent: 3925622 (1975-12-01), Robinson
patent: 4288661 (1981-09-01), Krishan
patent: 4327251 (1982-04-01), Fomenko et al.
patent: 4371752 (1983-02-01), Matthews et al.
patent: 4389546 (1983-06-01), Glisson et al.
patent: 4443664 (1984-04-01), Gange
patent: 4468813 (1984-08-01), Burke et al.
patent: 4476349 (1984-10-01), Cottrell et al.

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