Multiplex communications – Wide area network – Packet switching
Patent
1990-02-08
1993-07-27
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 29, 370 8515, H04J 302
Patent
active
052316289
ABSTRACT:
The invention relates to a network system for data transmission between two data processing units, e.g. a peripheral unit (PE) and a Token Ring network with a cable concentrator. Full duplex transmission is effected over each transmission channel between the two data processing units. For this purpose, the transmission channel comprises a two lead connection (KOAX) with an adapter (APE, AMAU) on either side. One of the adapters is coupled to a peripheral unit and the other to the media access unit (MAU). Each adapter has a transmitting file (TS, TS') for receiving data which is to be transmitted on the two lead connection to the other adapter, a receiving file (TM, TM') for transmitting data to its coupled unit after being sent over the two lead connection from the other unit, and a sorting coupling (TB, Rb, 2; TB', Rb', 4) which sorts out the data on the two lead connection which the adapter has not sent out thereon itself, and feeds this data to the receiving file (TM, TM').
REFERENCES:
patent: 3689710 (1972-09-01), Colardelle et al.
patent: 3983323 (1976-09-01), Griffith et al.
patent: 4670874 (1987-06-01), Sato et al.
patent: 4686703 (1987-08-01), Bruno et al.
patent: 4712210 (1987-12-01), Davis et al.
Marcelo Melvin
Nokia Data Systems A.B.
Olms Douglas W.
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