Track zero determination method used in data storage system...

Details Track zero determination method used in data storage system... Track zero determination method used in data storage system...

2007-10-02

2007-10-02

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S077020, C360S078040, C711S004000

Reexamination Certificate

active

11019667

ABSTRACT:
An optimal track zero determination method used in a hard disk drive and a hard disk drive using the method. The method has the operations: (a) performing a sequential seek operation on target tracks of a disk, in units of predetermined numbers of tracks, outwardly, from a track separate from a physical track zero position obtained in a servo track write operation, by a predetermined distance toward the physical track zero position; (b) determining whether the target tracks belong to a region where a track-following operation is normally performed, and determining whether an actuator arm connected to a transducer is in contact with a mechanical buffering unit during the sequential seek operation of operation (a); and (c) selecting as a logical track zero, the target track belonging to the region where the track following operation is normally performed and the actuator arm is not in contact with the mechanical buffering unit.

REFERENCES:
patent: 5153784 (1992-10-01), Kitamura
patent: 5796546 (1998-08-01), Sasamoto et al.
patent: 5940242 (1999-08-01), Lee
patent: 2003/0081341 (2003-05-01), Wilson
patent: 2005/0041321 (2005-02-01), Settje et al.
patent: 61-229202 (1986-10-01), None
patent: 99-0061745 (1999-07-01), None

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