Digital signal transmission system

Details Digital signal transmission system Digital signal transmission system

1985-07-23

1987-11-10

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 89, 370 94, H04B 900

Patent

active

047062460

ABSTRACT:
A digital signal transmission system for communicating digital signals in both a Faxnet and a CSMA/CD mode over a single cable. The system includes plural stations coupled to the single cable via taps, the stations transmitting time-division multiplexed digital signals on the cable with fixed time positions assigned to the signals within periodically repeated time base frames, which frames are subjected to further divisions so that individual ones of the stations transmit packets which occupy specific time periods in the frame. A send logic circuit prevents stopping of digital signal transmission from a station even if a collision occurs with a signal transmitted from the station in the CSMA/CD mode while a receive logic circuit prevents stopping of digital signal reception even if a collision is detected after start of digital signal reception.

REFERENCES:
patent: 4502137 (1985-02-01), Tan
patent: 4535450 (1985-08-01), Tan

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