Multiplex communications – Wide area network – Packet switching
Patent
1989-11-07
1992-01-07
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 302
Patent
active
050797662
ABSTRACT:
An access unit to a transmission medium formed of two telephone pairs of a local area network with carrier sense multiple access with collision detection, connected to a station containing a send current generator, a receive signal generator and a collision detector receiving the signals sent by the station and every signal sent by other stations. The unit includes a collision simulation circuit receiving a first send voltage U.sub.E and the receive singal V.sub.R, which sends to the collision detector either a second send voltage V.sub.E if the connected station is the only one sending, or the receive signal if the latter is not sending, or a collision simulation signal of which the average value is such that the collision detector signals a collision to the connected station.
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Fr-A-2 570 563, p. 6, lines 18-21.
Electronic Design, vol. 33, No. 8, 1985, pp. 189-194, 196, 198, 200 by S. Cooper et al.
Malgogne Bernard
Richard Claude
Bull S.A.
Olms Douglas W.
Ton Dang
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