Appeal No. 1997-3499
Application 08/366,281
This is a decision on appeal under 35 U.S.C. § 134 from
the final rejection of claims 1, 8, 9, 16, 17, and 21.
Claims 2-7, 10-15, 18-20, and 22 stand objected to.
We reverse.
BACKGROUND
The disclosed invention relates to a virus signature
detection method and system for locating virus patterns during
normal memory "scrubbing" operations.
Claim 1 is reproduced below.
1. A method for operating a computer system having
a central processing unit (CPU) for processing data
responsive to interrupt signals and stored instructions,
having a memory for storing data in a plurality of
addressable locations and having scrubbing means for the
continuous autonomous detection and correction of soft
bit errors in said data stored in said memory, said
method comprising the steps of:
(a) providing one or more items of said data read by
said scrubbing means from a first memory address;
(b) mapping said one or more data items to produce a
code signature related to said one or more data items
according to a first predetermined transformation;
(c) comparing said code signature to each of one or
more stored target signatures to determine a measure of
similarity therebetween;
(d) producing a CPU interrupt signal when said
measure of similarity equals or exceeds a predetermined
threshold; and
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