Obtaining a predetermined phase shift in data using different write precompensation associated with different NRZI patterns
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United States of America Patent
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Nov 28, 2017
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Aug 10, 2016
filing date -
Aug 10, 2016
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Abstract
First and second different write precompensation values are associated with different first and second non-return-to-zero, inverted (NRZI) data patterns. The first and second different write precompensation values cause a predetermined phase shift to be written into test data that comprises the first and second NRZI data patterns. The test data is mitten to a recording medium of a storage device using the first and second write precompensation value. The test data is used to determine a response of the storage device to the predetermined phase shift.
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