Appeal No. 95-4227
Application 08/060,858
calibration relation that will compensate for misalignments
between the data and servo heads and tracks that are less than a
track spacing.
The examiner’s Answer cites the following prior art:
Kenny et al. (Kenny) 4,918,972 Apr. 24, 1990
Satoh et al. (Satoh) 5,270,885 Dec. 14, 1993
OPINION
Claims 1-5 stand rejected under 35 U.S.C. § 103 as
being unpatentable over Satoh in view of Kenny.
The examiner’s rejection is based on the finding that
Satoh accounts for misregistration between a data head and a
servo head by logically renumbering the data tracks based on an
optimal servo track. Examiner’s Answer at 4. Appellants argue
that Satoh’s renumbering operation does not involve the relative
locations of data and servo heads. Appeal Brief at 35. We agree
with Appellants.
Satoh is concerned about track misalignment while
seeking a home cylinder, column 2, lines 59-69, and the examiner
relies on this in finding a concern with track misalignment while
shifting (renumbering) the home cylinder. However, Satoh shifts
the home cylinder to avoid unusable tracks, not to compensate for
track misalignment. When shifting the home cylinder for the
-3-
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