Method and apparatus for determining track pitch for writing...

Dynamic magnetic information storage or retrieval – Monitoring or testing the progress of recording

Reexamination Certificate

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C360S075000

Reexamination Certificate

active

10946646

ABSTRACT:
A disk drive including a self-servo writing apparatus is disclosed. The self-servo writing apparatus calculates a pitch of servo tracks constituted on a disk medium by a calculation method using a positional error calculation value based on a reproduction amplitude value of a servo burst pattern signal reproduced by a head.

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