Method to determine temperature dependent write...

Details Method to determine temperature dependent write... Method to determine temperature dependent write...

2005-03-31

2008-11-11

Feild, Joseph H (Department: 2627)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S046000, C360S051000

Reexamination Certificate

active

07450326

ABSTRACT:
Methods in accordance with the present invention can include determining a plurality of sets of write pre-compensation parameters. At baseline conditions, the hard disk drive can apply a first current and write pre-compensation parameters can be tuned to generate a desired write current waveform that can be applied to the read/write head to generate a magnetic field to define magnetization on the magnetic media. The hard disk drive can then apply a second current and write pre-compensation parameters can be tuned to generate the desired write current waveforms. A plurality of write pre-compensation parameters can then be generated based on the results for a plurality of corresponding temperatures and/or temperature ranges.

REFERENCES:
patent: 6101053 (2000-08-01), Takahashi
patent: 6124998 (2000-09-01), Kanegae
patent: 6731453 (2004-05-01), Korbel et al.
patent: 6760171 (2004-07-01), Stein
patent: 6788481 (2004-09-01), Fang et al.
patent: 6954320 (2005-10-01), Yang
patent: 6995933 (2006-02-01), Codilian et al.
patent: 2002/0105748 (2002-08-01), Lamberts

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