Appeal No. 1998-0066
Application 08/258,235
DECISION ON APPEAL
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1-21.
We reverse.
BACKGROUND
The disclosed invention is directed to a method and
system for switching from an operating processor to a backup
processor upon detection of failure by the backup processor.
Claim 1 is reproduced below.
1. A backup switching control method for use with
a system having at least one system resource, at least
one operating data processor exclusively occupying said
system resource for processing data within said system
including at least one of inputting, outputting and
storing data with said at least one system resource,
and at least one backup processor which takes over said
data processing from said operating processor when a
failure of said operating processor occurs, comprising
the steps of:
connecting said operating processor, said backup
processor and said system resource together for
communication therebetween;
said operating processor and said backup processor
each performing a switching control function including
sending a system disconnection command and a dump
acquisition command from said backup processor to said
operating processor, and further for sending a
disconnection complete notice from said operating
processor to said backup processor;
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