Direction sensing apparatus for data transmission cable connecti

Details Direction sensing apparatus for data transmission cable connecti Direction sensing apparatus for data transmission cable connecti

1984-11-05

1990-02-06

Safourek, Benedict V.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455601, 455607, H04B 900

Patent

active

048985651

ABSTRACT:
Disclosed is a direction sensing apparatus employed with universal connectors at the data units located along a data transmission cable. Each connector includes an optical source and an optical detector and the connecting segments cable between units each includes two fiberoptic conduits. One is for the transmission of control signals in a direction away from a master station and the other is for the transmission of the data signals toward the master station. Logic circuitry within each unit determines the presence of the first light source detected at the unit and switches the signals modulated thereon to the command channel within the unit. This switching also applies the signals modulated on the second-in-time light source detected at the unit to be applied to the data channel within the unit. Hence, it makes no difference which of the two connections at each data unit is used for connecting with the preceding station or with the succeeding station.

REFERENCES:
patent: 4408307 (1983-10-01), Harris

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