Write precompensation method for perpendicular magnetic...

Details Write precompensation method for perpendicular magnetic... Write precompensation method for perpendicular magnetic...

2006-10-24

2006-10-24

Nguyen, Hoa T. (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

C360S068000

Reexamination Certificate

active

07126773

ABSTRACT:
A method is presented for precompensation of Non-Linear Transition Shift (NLTS) in magnetic recording media using a perpendicular recording write head. The method includes maintaining a count of non-transition data bits (“zeroes”) preceding a data transition (“one”) to be written. A precompensation value is assigned which correlates to the count of non-transition data bits preceding the data transition to be written. The assigned precompensation value is then applied to delay timing of a write signal sent to the perpendicular recording write head so that the location of the actual written data transition more closely aligns with an ideal location of the data transition to be written.

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patent: 2003/0103290 (2003-06-01), Atsumi
patent: 2005/0200996 (2005-09-01), Musungu et al.
patent: 2000-207704 (2000-07-01), None

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