Heat-assisted magnetic recording device capable of laser calibration during a background operation
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United States of America Patent
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Jan 9, 2018
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app pub date -
Sep 13, 2016
filing date -
Sep 13, 2016
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Abstract
A storage device performs a background operation involving seeking a read/write head between inner and outer diameters of a disk of the storage device. During the seeking, adjacent test tracks are written at a diameter between the inner and outer diameters of the disk. The adjacent test tracks are written using varying levels of laser power applied to the disk via the read/write head. An optimum value of the laser power is determined based on reading at least one of the adjacent test tracks.
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