Four way selector switch for a five port module as a node asynch

Details Four way selector switch for a five port module as a node asynch Four way selector switch for a five port module as a node asynch

1982-09-02

1984-11-20

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

34082504, 179 18FG, H04J 600

Patent

active

044843259

ABSTRACT:
A four way selector switch for a five port module as a node in an asynchronous speed independent network of concurrent processors, each port of the module including an input selector switch and an output selector switch such that each selector switch has a plurality of output channels one for each of the output arbiter switches (except the arbiter switch associated with its own port). Each selector switch is adapted to select a particular output channel (arbiter switch) according to the initial bits received in the asynchronous speed independent message. In this manner, the module of the present invention can accommodate up to five simultaneous asynchronous message transmissions without nodal blocking although the average number of simultaneous messages that can be accommodated will be less. The respective arbiter and selector switches are provided with circuitry to respond to a clear signal that resets the corresponding arbiter and selector switches forming a particular transmission path should nodal blocking occur.

REFERENCES:
patent: 3766322 (1973-10-01), Moffett et al.
patent: 4237447 (1980-12-01), Clark
patent: 4251879 (1981-02-01), Clark
patent: 4258434 (1981-03-01), Glowinski et al.
patent: 4314367 (1982-02-01), Bakka et al.
patent: 4347498 (1982-08-01), Lee et al.
patent: 4380063 (1983-04-01), Janson et al.

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