Noise mitigation for write precompensation tuning
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United States of America Patent
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Nov 15, 2016
Grant Date -
Nov 3, 2016
app pub date -
May 1, 2015
filing date -
May 1, 2015
priority date (Note) -
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Abstract
The disclosed technology provides techniques for mitigating write-to-write bit error rate fluctuations that decrease accuracy of write precompensation (WPC) tuning. According to one implementation, such write-to-write bit error rate fluctuations are mitigated if a predetermined pattern is written at a particular radial offset from a target data track prior to testing a WPC register in association with the target data track. Selection of the particular radial offset can be performed according to an iterative offset track clean-up disclosed herein.
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