Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2007-06-12
2010-10-26
Torres, Juan A (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S229000
Reexamination Certificate
active
07822114
ABSTRACT:
A decision feedback equalizer (DFE) and method include at least two paths. Each path includes the following. An adder is configured to sum an input with a first feedback tap fed back from a different path. A latch is coupled to the adder to receive a summation signal as input. The latch includes a transparent state, and an output of the latch is employed as the first tap in a feedback path to an adder of a different path, wherein a partially resolved first tap in the feedback path is employed during the transparent state to provide a soft decision to supply correction information in advance of a hard decision of the latch.
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Bulzacchelli John F.
Friedman Daniel J.
Rylyakov Alexander
Wong Koon Lun Jackie
Dougherty, Esq. Anne V.
International Business Machines - Corporation
Torres Juan A
Tutunjian & Bitetto PC
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