Appeal No. 2000-1289 Page 3
Application No. 08/604,829
Claim 11, which is representative, follows:
11. An information storage controller for
controlling a reading and writing of information to
and from a plurality of magnetic disks and an
external equipment, said controller comprising:
an external communication means for
communicating information with the external
equipment;
a plurality of magnetic disk communication means
for communicating information with the plurality of
magnetic disks;
a first group of memory devices comprising a
plurality of memory devices equivalent in number to
said plurality of magnetic disk communication means;
a second group of memory devices comprising a
plurality of memory devices equivalent in number to
said plurality of magnetic disk communication means;
a switch means for enabling connection
alternately between (a) and (b):
(a) said second group of memory devices and
said magnetic disk communication means and
between said first group of memory devices and
said external communication means; and
(b) said first group of memory devices and
said magnetic disk communication means and
between said second group of memory devices and
said external communication means;
wherein each of said plurality of magnetic disk
communication means is alternately connected to one
of aid plurality of memory devices from said first
group of memory devices and to one of said plurality
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