Two wire optical data communication system

Details Two wire optical data communication system Two wire optical data communication system

1980-07-15

1982-03-16

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

307117, 455613, 34082562, H04Q 900, H03K 342

Patent

active

043203884

ABSTRACT:
A control station in data communication with a plurality of remote stations, each remote station including a receiving opto-isolator device and a transmitting opto-isolator device, each having an LED and an associated light detector. The LED of the receiving opto-isolator is in series circuit arrangement with the detector of the transmitting opto-isolator. A single remote station may be provided or a plurality of remote stations either in series or parallel circuit configuration. If in series configuration, a bypass circuit may be provided in the event of a failure of a particular remote station.

REFERENCES:
patent: 3895241 (1975-07-01), Cooper
patent: 3959772 (1976-05-01), Wakasa et al.
patent: 4081787 (1978-03-01), Lee
patent: 4107474 (1978-08-01), Schneider
patent: 4176401 (1979-11-01), Lonberger

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