Communications system with reliable collision detection method a

Details Communications system with reliable collision detection method a Communications system with reliable collision detection method a

1992-06-18

1994-08-02

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 851, H04J 302

Patent

active

053352262

ABSTRACT:
A communications system having a plurality of nodes is disclosed, including a reliable method and apparatus for collision detection. Each node includes a primary and a secondary collision detection circuit, and a unique value that is included in each transmission. The unique values of the nodes are designed so that collisions not detected by the primary collision detection circuit are reliably detected by the secondary collision detection circuit, even in the presence of logic delays within the circuits, and propagation delays between nodes.

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Draft Supplement to ANSI/IEEE Std. 802.3-1990, Type 10Base-F, published by IEEE Stds., 445 Hoes Lane, Piscataway, New Jersey 08854, 1991, pp. 16-1 through 16-8.

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