Magnetic storage systems and methods allowing for recovery...

Details Magnetic storage systems and methods allowing for recovery... Magnetic storage systems and methods allowing for recovery...

2008-08-25

2011-11-15

Negron, Daniell L (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data verification

C360S031000, C360S066000, C360S077010

Reexamination Certificate

active

08059353

ABSTRACT:
A magnetic storage system includes a disk, a head, an actuator, a read channel, and a main controller. The main controller causes the head to read a data block of a selected track of the disk at each of a plurality of fixed offsets from a center of the selected track. The main controller samples a gain in the read channel a plurality of times while the head is reading the data block at each of the plurality of fixed offsets to obtain a plurality of gain samples for each of the plurality of fixed offsets. If the data block was written off-track with a non-constant offset, the main controller determines an approximate starting position and an approximate rate of change of an off-track deviation of the data block based on the plurality of gain samples for the plurality of fixed offsets.

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