Recording current optimization method of hard disk drive,...

Details Recording current optimization method of hard disk drive,... Recording current optimization method of hard disk drive,...

2006-11-17

2009-12-22

Tzeng, Fred (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

Reexamination Certificate

active

07636213

ABSTRACT:
A recording current optimization method to optimize a recording current according to a change of a driving voltage applied to a pre-amplifier that generates the recording current supplied to a head, a recording medium storing a program that executes the method, and an apparatus that employs the method. The method of optimizing the recording current provided to the recording head of the hard disk drive includes detecting a driving voltage of the pre-amplifier, determining a voltage difference between the detected driving voltage and a reference driving voltage of the pre-amplifier, and optimizing the recording current according to the determined voltage difference. The recording current is adaptively optimized according to the change of the pre-amplifier driving power to provide the recording current to the head such that adjacent track erasure (ATE) and weak write (WW) are prevented from occurring due to the change of the driving power.

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Korean Office Action dated Nov. 13, 2006 issued in KR 2005-110887.

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