MAGNETIC DISK APPARATUS AND METHOD
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United States of America
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Issued Date -
Dec 12, 2024
app pub date -
Feb 16, 2024
filing date -
Feb 16, 2024
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Abstract
According to one embodiment, a controller of a magnetic disk apparatus operates in a first operation of writing to data regions on a magnetic disk of the magnetic disk apparatus while positioning a magnetic head. In the first operation, the controller demodulates burst patterns to obtain a first burst demodulated value set and corrects the first burst demodulated value set to obtain a second burst demodulated value set. The first burst demodulated value set is corrected on the basis of a correction algorithm using a first set value as an argument. The controller calculates, on the basis of the second burst demodulated value set, an offset amount of the magnetic head from one of servo tracks on the magnetic disk.
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