Magnetic disk apparatus and its servo signal recording method

Details Magnetic disk apparatus and its servo signal recording method Magnetic disk apparatus and its servo signal recording method

2005-06-14

2005-06-14

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

06906884

ABSTRACT:
A magnetic disk apparatus includes an actuator for moving a head to a position above the magnetic disk in a servo track movement operation, a range limiter for limiting a movable range of the actuator, a range specifier for setting a specific range of the actuator in the movable range of the actuator, and a control unit. The control unit enables writing a servo signal into the specific range at servo track movement pitch based on servo tracks recorded with the servo signal, correcting the servo track movement pitch on the basis of the number of servo tracks in the specific range and executing control to write the servo signal at corrected servo track movement pitch.

REFERENCES:
patent: 6040955 (2000-03-01), Brown et al.
patent: 96/28814 (1996-09-01), None

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