Communications: electrical – Audible indication – Pneumatic-type sound producer
Patent
1974-11-26
1976-03-23
Pitts, Harold I.
Communications: electrical
Audible indication
Pneumatic-type sound producer
340413, 340163, G08B 2900
Patent
active
039463800
ABSTRACT:
A system of remote supervising and controlling many console units or equipments associated therewith with a central supervision and control unit. Console units are connected in parallel to the central unit through a single output line comprising a group of wires from the central unit, series signals of clock, data and other pulses are transmitted from the central unit to the respective console units, and signals informing whether the state in the respective console units is normal or not and results of detections of the respective equipments are returned from the console units to the central unit through a signal line in the group of wires.
REFERENCES:
patent: 3689887 (1972-09-01), La Falce
patent: 3735396 (1973-05-01), Getchell
Ohnishi Kazuaki
Ohnuki Katsuhiro
Matsushita Electric & Works Ltd.
Pitts Harold I.
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