Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1995-02-16
1997-12-09
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
With particular coupling link
340692, 340331, 379 37, 379 43, 379 38, H04Q 130
Patent
active
056964870
ABSTRACT:
The audible alarm apparatuses include fire sensing portion, location setting portion for setting a location of the fire sensing portion, system controller for providing information about the location of the fire outbreak and controlling interface devices, DTMF generator, DTMF receiver, voice data storage portion responsive to the information outputted from the system controller for providing a voice data, parallel to serial converter, digital to analog converter, and amplifier, etc. The apparatuses give and take the information about the location of the fire outbreak directly with each other via a telephone line without a host computer.
REFERENCES:
patent: 4519027 (1985-05-01), Vogelsberg
patent: 4531114 (1985-07-01), Topol et al.
patent: 4682348 (1987-07-01), Dawson et al.
patent: 4796018 (1989-01-01), Nakanishi et al.
patent: 4816809 (1989-03-01), Kim
patent: 5200987 (1993-04-01), Gray
patent: 5438607 (1995-08-01), Przygoda et al.
Hofsass Jeffery
Pope Daryl C.
Pyeong-Hwa Electronic Co.
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