Telephonic communications – Emergency or alarm communications – Responsive to sensed nonsystem condition
Patent
1986-01-15
1987-06-09
Dwyer, James L.
Telephonic communications
Emergency or alarm communications
Responsive to sensed nonsystem condition
379 40, 379 44, 379 42, H04M 1104
Patent
active
046726535
ABSTRACT:
The invention concerns a remote security and operating system. A user can dial remote systems for spot checks of system sensors, or different systems can dial the user on fault detection. Once the user is connected with the system, the user enters a code and command signals. For instance, a set of normally open sensor switches can be shut down, while a set of normally closed switches are monitored. Each system identifies itself to the user by a series of tonal bursts. The user, by pressing a telephone push-botton, can enter a new telephone number the system will call on fault detection. A set of remote microphones can be activated, their audio signals being fed to the user, through nulling amplifiers which the system would otherwise try to interpret. A tonal OK circuit signal is sent to the user upon testing if the system is working, followed by a different tone if a selected sensor switch detects a fault. An ultrasonic circuit operates a home lighting system through huse wiring, to light a user's home from outside once intrusion sensors are checked, for instance.
REFERENCES:
patent: 4086434 (1978-04-01), Bocchi
patent: 4486625 (1984-12-01), Reinaver et al.
patent: 4491690 (1985-01-01), Daley
patent: 4493947 (1985-01-01), Loveless
patent: 4528423 (1985-07-01), James et al.
patent: 4540851 (1985-09-01), Hashimoto
patent: 4571455 (1986-02-01), Labock et al.
patent: 4596900 (1986-06-01), Jackson
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