Dynamic magnetic information storage or retrieval – General processing of a digital signal
Reexamination Certificate
2007-06-28
2009-10-13
Tzeng, Fred (Department: 2627)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Reexamination Certificate
active
07602567
ABSTRACT:
A method of feed-forward DC restoration in a perpendicular magnetic read channel is disclosed. The method generally includes the steps of (A) generating a feed-forward signal by performing a first detection on an input signal, wherein a DC component of the input signal was previously filtered out in the perpendicular magnetic read channel, (B) generating a restored signal by summing the input signal and the feed-forward signal, the summing restoring the DC component previously filtered out and (C) generating an output signal by performing a second detection on the restored signal, wherein the first detection is independent of the second detection.
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Park Jongseung
Poeppelman Alan D.
Vityaev Andrei E.
LSI Corporation
Maiorana PC Christopher P.
Tzeng Fred
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