Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2011-08-02
2011-08-02
Mattis, Jason E (Department: 2461)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S222000, C709S251000
Reexamination Certificate
active
07990851
ABSTRACT:
Sets of communication modules each have a pair of ring-channel ports for a ring-configured channel in a network, a peripheral device port for peripheral device data, and dual-ring ports for an inter-ring channel for the pair of modules. First and second ones of a set of communication modules send duplicate data packets on their respective first and second rings. Responsive to duplicate data packets arriving via the rings at first and second modules in a next set within a predetermined time interval of one another, each of the next modules transmits its ring-channel received data packet out a downstream ring-channel port. Responsive to one of the duplicate packets arriving at the DRP of a module a predetermined time interval before arriving at a ring-channel port of the module, the module sends the corresponding packet received at the DRP out its other ring-channel port and its peripheral device port.
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Cisneros Ernest Amador
Dam Hai Thanh
McLaughlin Daniel Lee
Verlenich, Jr. Nick
England Anthony V. S.
Mattis Jason E
Weed Instrument, Inc.
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