Appeal No. 97-0610
Application No. 08/346,689
3 through 14 and 16 through 24, and reverse the 35 U.S.C. §
103 rejection of claims 2 and 15.
Cunningham discloses a method and apparatus for data
recovery in a disk drive data storage system. A plurality of
data recovery procedures are stored in memory, and when a
readback error is detected in a read-back data signal, one of
the stored plurality of data recovery procedures is selected
in response to the detected readback error and head and disk
parameters. “A preferred data recovery procedure is defined
specific to the failure mechanisms or risk factors at any
given point or head/disk as illustrated and described with
respect to FIGS. 3, 4 and 5" (column 4, lines 2 through 5).
Although “many recovery procedures have been developed to
correct for specific failure mechanisms,” “[a] typical data
recovery procedure includes rereads, head shifts and at least
one error correcting code (ECC)” (column 1, lines 51 through
53 and column 8, lines 7 through 11). The examiner recognizes
that “Cunningham does not explicitly teach selecting the
recovery procedure based on the type of data” (Answer, page
3).
3
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