Disk drive employing read error tolerant sync mark detection
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United States of America Patent
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Jun 25, 2002
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N/A
app pub date -
Mar 11, 1997
filing date -
Mar 11, 1997
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Abstract
A hard disk drive has a pattern detector for providing fault-tolerant detection of a data sync mark represented by a substring of a concatenated string of error-prone read symbols and for providing a reduced risk that a nonmark substring of the concatenated string of error-prone read symbols will be misdetected as a sync mark. The data sync mark write string corresponds to an ordered set of m expected symbols selected to have maximum distance from all non-mark substrings of m consecutive expected symbols that exist in the concatenated string of expected symbols.
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