Closed-loop emergency alarm and response system

Details Closed-loop emergency alarm and response system Closed-loop emergency alarm and response system

1976-06-07

1977-12-20

Claffy, Kathleen H.

H04M 1104

Patent

active

040643689

ABSTRACT:
A closed-loop system for monitoring the condition of a person in a residence. A digital dialer-transceiver at the residence is connected to a telephone line and may be triggered by an emergency button or the running out of a timer. It transmits identification and alarm codes to a compatible digital transceiver at a central station and at the same time emits an alarm signal at the residence. The central station digital receiving unit acknowledges the communication, means being provided in response to this acknowledgement for changing the "alarm" signal at the residence to a "call received" signal. The central station operator calls emergency responders previously recruited for that residence. The responder arriving at the residence presses a reset button on the unit which transmits an "all clear" signal to the central station and changes the "call receive" mode of the residence signal to an "all clear" mode. The central station acknowledges the "all clear" signal to the residence and in response thereto, dialing of the transceiver at the residence is discontinued.

REFERENCES:
patent: 3206551 (1965-09-01), Crowson
patent: 3427403 (1969-02-01), Stokes
patent: 3531597 (1970-09-01), Andrews
patent: 3662111 (1972-05-01), Rubinstein

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