Disk apparatus and control method therefor
AssigneeFujitsu Limited
InventorsKazunori Mori, Tatsuhiko Kosugi
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Abstract
A method for controlling a disk apparatus in which a head scans tracks on a disk to record or retrieve information. The method includes a position error detection procedure which detects a position error between said head and said track, a phase control procedure which advances a phase of said position error detected by said position error detection procedure by a predetermined value and a head control procedure which controls a position of said head according to the position error which is advanced in phase by said phase control procedure.
Claims8
A method for controlling a disk apparatus in which a head scans tracks on a disk to record or retrieve information, the method comprising the steps of:
- (a) detecting a position error between said head and said tracks;
- (b) advancing a phase of said position error detected by said step (a) by a predetermined value;
- and
- (c) controlling a position of said head according to the position error which is advanced in phase by said step (b).
A disk apparatus in which a head scans tracks on a disk to record or retrieve information, the disk apparatus comprising:
- a position error detection part which detects a position error between said head and said tracks;
- a phase control part which advances a phase of said position error detected by said position error detection part by a predetermined value;
- and
- a head control part which controls a position of said head according to the position error which is advanced in phase by said phase control part.
Dependencies are inferred from the claim text.