Appeal No. 95-3091
Application 08/093,311
103 as being unpatentable over Yoshimura and McCullough (Paper
No. 6, at 2).
The Invention
The invention is directed to a disk drive wherein
the stored data contains an error correction code added
thereto before writing of the data onto the disk. The number
of bits in the error correction code is selected in
accordance with a selection signal generated by a circuit
which is responsive to a track address indicating a location
on the recording medium. Claim 1 is the only independent
claim and is reproduced below:
1. A disk drive apparatus in which an error
correction code is added to data before it is written to a
recording disk medium, comprising:
a selection signal generation circuit responsive to
a track address indicating an access location on the medium,
for generating a selection signal to be used for selecting a
number of bits of the error correction code; and
a read-write circuit for performing a data read or
write operation to the medium while selecting the number of
bits of the error correction code in accordance with the
selection signal.
Opinion
We do not sustain the rejection of claims 1-5.
2
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