Appeal No. 2003-0640
Application No. 09/507,261
Invention
The disclosed invention relates to multimode computer
systems with multiple processors on the nodes (Figures 1 and 2).
More particularly, the invention relates to ensuring that a
remote node obtains control of data by having a state machine
monitor whether an invalidate message for data is received at the
node after the node issues a request for a shared copy of the
data. If an invalidate message is received, then in response the
node issues a request for an exclusive copy of the data (figure
5).
Claim 18 is representative of the claimed invention and is
reproduced as follows:
18. A multimode computer system with multiple processors on the
nodes that ensures a remote node obtains control of data,
comprising a state machine that monitors whether an invalidate
message for data is received after issuing a request for a shared
copy of the data and in response to the invalidate message issues
a request for an exclusive copy of the data.
Reference
The reference relied on by the Examiner is as follows:
Lovett 5,802,578 Sep. 1, 1998
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