Method for testing magnetic hard disk or magnetic head

Details Method for testing magnetic hard disk or magnetic head Method for testing magnetic hard disk or magnetic head

2006-09-19

2006-09-19

Aurora, Reena (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

C324S212000

Reexamination Certificate

active

07109701

ABSTRACT:
A testing method for a magnetic hard disk or a magnetic head in a test system includes a moving step in which the magnetic head, which moves to fly closely over the magnetic disk, moves to a predetermined radial position corresponding to the position data of the magnetic disk which rotates at a predetermined constant speed; a reading step in which imbedded position data is read out for each sector of the magnetic disk is by the magnetic head; and a reading/writing step in which a predetermined signal is written in or read out from a data area of the sector by the magnetic head when the position data is one of equal to a predetermined value and within a predetermined range.

REFERENCES:
patent: 4638384 (1987-01-01), Stewart et al.
patent: 6023145 (2000-02-01), Karaaslan et al.
patent: 6696831 (2004-02-01), Nozu

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