Appeal No. 1998-0696 Page 2
Application No. 08/444,664
The invention is directed to a system and method of
positioning a magnetoresistive head for reading and writing
information from and to a disk.
Representative independent claim 1 is reproduced as
follows:
1. A method of positioning a magnetoresistive head for
reading and writing information from and to a disk, the
magnetoresistive head including a magnetoresistive read element
and a write element, the write element being spaced a
predetermined distance from the read element, the disk
including at least one track having at least one servo area for
storing servo information for identifying a track location, at
least one identification area for storing sector information
for identifying a sector, and at least one data area for
writing or reading data information, the method comprising the
steps of:
(a) obtaining a position error signal from the servo
area;
(b) adjusting said position error signal by adding a
first offset amount when said write element is writing
information on said disk;
(c) adjusting said position error signal by adding a
second offset amount when said read element is reading data
from said disk,
wherein said first and second offsets are non-zero in magnitude
and of opposite directions; and
(d) positioning said magnetoresistive head on said disk
in response to the adjusted position error signal.
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