Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2005-05-25
2008-11-25
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S354000, C375S341000, C375S346000, C360S065000, C360S046000, C360S048000, C369S053160
Reexamination Certificate
active
07457355
ABSTRACT:
An equalizer coefficients generator receives a DSS sequence and a DSS readback sequence, which is a function of a channel processing of the DSS sequence by a read channel. The generator generates a coefficient cyclic equalizer vector as a function of the DSS sequence and the DSS readback sequence. The generator further generates an error signal as a function of a comparison of the DSS sequence and an equalization of the DSS readback sequence based on the coefficient cyclic equalizer vector. An unacceptable error signal indicates a need to adjust the coefficient cyclic equalizer vector to yield an acceptable comparison of the DSS sequence and an equalization of the DSS readback sequence based on the coefficient cyclic equalizer vector.
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Eleftheriou Evangelos S.
Hutchins Robert A.
Oelcer Sedat
Fan Chieh M.
International Business Machines - Corporation
Konrad Raynes & Victor LLP
Pathak Sudhanshu C.
Victor David W.
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