Disk recording device for writing a radially coherent reference band by measuring relative timing offsets of reference bursts
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United States of America Patent
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Mar 24, 2015
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N/A
app pub date -
Feb 18, 2014
filing date -
Feb 18, 2014
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Abstract
A disk recording device is disclosed comprising a disk and a head. A first plurality of reference bursts are written along a first radius of the disk, the first plurality of reference bursts comprising a first reference burst. A second plurality of reference bursts are written along a second radius of the disk circumferentially offset from the first radius, the second plurality of reference bursts comprising a second reference burst. A first segment of a reference band is written along a third radius of the disk circumferentially offset from the second radius, and at a first timing offset from the first reference burst. A second timing offset between the first reference burst and the second reference burst is measured, and a second segment of the reference band is written radially coherent with the first segment based on the first timing offset and the second timing offset.
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