Switching device for detecting interruptions in transmission lin

Details Switching device for detecting interruptions in transmission lin Switching device for detecting interruptions in transmission lin

1981-08-24

1984-04-10

Smith, Jerry

Excavating

371 67, 371 70, 364186, G06F 1100

Patent

active

044425210

ABSTRACT:
In a transmission system employing a plurality of parallel lines for transmitting serial digital signals, means are provided in each line for detecting and disconnecting any line on which transmission is interrupted comprising a converter for producing two signals of opposite polarity, a receiver for reconverting the signals connected to the converter by a pair of transmission lines, an exclusive OR gate connected to the pair of transmission lines for providing an output when normal signals of opposite polarity are present, and a switch comprising an AND gate converted to the receiver and to the exclusive OR gate which disconnects the receiver when no output is received from the exclusive OR gate. The received signals from each line are combined through a common OR gate.

REFERENCES:
patent: 3476922 (1961-11-01), Yiotis
patent: 4236215 (1980-11-01), Callahan et al.
patent: 4298982 (1981-11-01), Auerbach

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