High availability data processing system and method using finite state machines
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United States of America Patent
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Aug 6, 1996
Grant Date -
N/A
app pub date -
Jan 19, 1994
filing date -
Jan 19, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention is a high availability data processing system. It includes a primary processor at a first node of a communications network with a serial data stream, having failure detection logic therein, for outputting an alarm signal to the network having a characteristic pattern indicating a failure in the primary processor. The invention further includes a first standby processor at a second node of the communications network, having a first event driven interface therein coupled to the network, for detecting the alarm signal. When the characteristic pattern is detected by the event driven interface, switch over logic in the first standby processor, invokes primary status in the first standby processor.
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