Head position control method and disk storage device

Details Head position control method and disk storage device Head position control method and disk storage device

2005-11-01

2005-11-01

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078010, C360S075000, C360S048000

Reexamination Certificate

active

06961204

ABSTRACT:
A head position control method controls the speed of the head using the position and the speed detected from the servo information on the disk and directly detects the head speed. The speed detection pattern is assigned to the servo area of the disk, and the speed of the head is detected at the frequency of the regeneration signal. Therefore the speed of the head can be directly detected at the timing of the servo reading. By this, information on the head speed can be obtained with less error. Since there is no delay in the speed detection, the phase margin of the control system increases and stability improves.

REFERENCES:
patent: 6501613 (2002-12-01), Shih
patent: 2003338145 (2003-11-01), None

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