Clock accuracy determining method and clock accuracy determining device
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United States of America Patent
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Sep 8, 2015
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N/A
app pub date -
May 16, 2014
filing date -
Feb 25, 2014
priority date (Note) -
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Abstract
According to one embodiment, when a timing error between a signal read back from a multi-spiral pattern pre-recorded on a magnetic disc and an SSW clock generated at a read/write channel is set as an SSW clock following error, SSW clock accuracy is determined based on results of comparison between SSW clock following errors read from two different points in each of spiral patterns constituting the multi-spiral pattern.
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