Automatic bypass system for ring type local area network

Details Automatic bypass system for ring type local area network Automatic bypass system for ring type local area network

1988-03-28

1990-09-11

Orsino, Joseph A.

Multiplex communications

Wide area network

Packet switching

340827, H04J 116

Patent

active

049568361

ABSTRACT:
In an exemplary embodiment, a ring net work is of a multiple petal configuration with the petal path to and from each node extending through a petal isolator at a hub location. A set of terminals is provided at the hub location for each node. An activity detector is coupled to a terminal of each set for detecting the normal network signals returning from a respective node, and a bypass controller is connected to another terminal of each set for sensing such signals transmitted to a respective node. The controller operates to sense separate signal bursts, and to bypass the set of terminals associated with a give node in the absence of signal detection by the associated signal detector after a selected number of separate signal bursts have been transmitted to the node. The timing relationships can be adjusted to accommodate a ring network where signals are transmitted about a ring with signal amplification and undelayed signal transmission at the respective nodes.

REFERENCES:
patent: 4623884 (1986-11-01), Ihara et al.
patent: 4680750 (1987-07-01), Davidow

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