Remote supervisory and controlling system

Details Remote supervisory and controlling system Remote supervisory and controlling system

1986-11-12

1988-10-25

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

34082552, H04Q 100, H04J 324

Patent

active

047808721

ABSTRACT:
A remote supervisory and controlling system in which a central control unit generates a dummy transmission signal until receipt of an interruption signal from one of a plurality of input terminal units. In response to the interruption signal, the control limit accesses the input terminal generating the interruption signal, which returns its input data.

REFERENCES:
patent: 4429299 (1984-01-01), Kabat et al.
patent: 4574376 (1986-03-01), Dahlquist
patent: 4608561 (1986-08-01), Kosima et al.
patent: 4628315 (1986-12-01), Douglas

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