Magnetic media defect detection apparatus and method
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United States of America Patent
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Sep 30, 2003
Grant Date -
Aug 29, 2002
app pub date -
Feb 27, 2001
filing date -
Feb 27, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for detecting defects in a magnetic disk includes a read head including multiple read elements for reading multiple tracks of the disk. Read signals produced by the read elements are received by certifier circuit portions for determining whether any of the read signals includes an indication of a defect in the disk. A monitoring circuit monitors the read elements to detect a malfunctioning read element. The read head position is controlled so that a malfunctioning read element is not used.
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