Method and apparatus for head positioning using servo...

Details Method and apparatus for head positioning using servo... Method and apparatus for head positioning using servo...

Filed on

2005-08-09

Date issued

2005-08-09

Examiner

Hudspeth, David (Department: 2651)

Patent Class

Dynamic magnetic information storage or retrieval

SubClass

Automatic control of a recorder mechanism

SubSubClass

Controlling the head

Other Related Categories

C360S078080, C360S078140

Type

Reexamination Certificate

Status

active

Patent number

06927935

Description

ABSTRACT:
There is disclosed a disk drive using a disk medium in which a non-servo range exists. In order to position a head at a target track, a CPU executes a seek operation by normal velocity control using servo data. At this positioning, when the head passes the non-servo range from which no servo data can be obtained, the CPU executes a seek operation by special velocity control to move the head at a velocity calculated based on a moving distance of the non-servo range.

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Austrian Search Report dated Oct. 13, 2004 for Appln. No. 200401345-4.

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