Magnetic disk write precompensation method and apparatus which takes into account variations in head/disk characteristics
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United States of America Patent
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Jun 18, 1991
Grant Date -
N/A
app pub date -
Oct 17, 1986
filing date -
Oct 17, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Write precompensation data is recorded on a disk of a magnetic disk drive indicating the write compensation to be provided for each of a plurality of head/media combination which may have relatively wide variations in performance characteristics. Apparatus is provided for transferring and storing this write precompensation data in the disk controller at start-up and for accessing this stored data during each write operation to provide a 'tailored' write precompensation for the particular head/media combination to be employed for the writing operation.
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