Systems and methods for adaptive write pre-compensation

Details Systems and methods for adaptive write pre-compensation Systems and methods for adaptive write pre-compensation

2011-04-12

2011-04-12

Mercedes, Dismery E (Department: 2627)

Dynamic magnetic information storage or retrieval

Checking record characteristics or modifying recording...

C360S031000, C360S045000, C360S065000

Reexamination Certificate

active

07924518

ABSTRACT:
Various embodiments of the present invention provide systems and methods for write pre-compensation. For example, various embodiments of the present invention provide methods for modifying magnetic information transfer. The methods include retrieving magnetically represented data from a storage medium, and converting the magnetically represented data to a series of data samples. A preceding pattern and a transition status is identified in the series of data samples, and an equalized channel response is computed based on an estimated NLTS value. An error value is computed that corresponds to a difference between the estimated NLTS value and an actual NLTS value, and a pre-compensation value is computed based at least in part on the error value.

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