Asymmetry correction in read signal

Details Asymmetry correction in read signal Asymmetry correction in read signal

2009-03-16

2010-10-19

Mercedes, Dismery E (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of equalizing

C360S025000, C360S031000, C360S046000

Reexamination Certificate

active

07817368

ABSTRACT:
Systems and techniques relating to interpreting signals on a channel having an asymmetrical signal amplitude response can include generating multiple asymmetry matrices that model asymmetry in a received analog signal, including an effect of asymmetry spreading in a read channel; comparing the multiple asymmetry matrices; and selecting indicators of asymmetry from the matrices based on the comparing. Systems and techniques can include saving in memory an indication of the selected indicators of asymmetry.

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