Method and apparatus for controlling a write current in a...

Details Method and apparatus for controlling a write current in a... Method and apparatus for controlling a write current in a...

2006-08-22

2006-08-22

Wellington, Andrea (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S068000, C360S031000

Reexamination Certificate

active

07095576

ABSTRACT:
A method and apparatus for controlling a write current capable of improving an adjacent track erasure (ATE) property of a hard disk drive. The method for controlling the write current in a hard disk drive includes applying overshoot current and write current to a head to write data on a disk, waiting for a predetermined time to pass, with the predetermined time being determined according to a thermal pole tip protrusion (TPTP) property of the head, and reducing the overshoot current and the write current upon passing of the predetermined time. Accordingly, since the overshoot current and the write current are decreased at the time of the TPTP being saturated, it is possible to effectively improve an ATE property of the hard disk drive.

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Korean Office Action for Appln. No. 10-2003-0096289 dated Jul. 22, 2005.

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