Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
David J. Pereira0
Mark Hennecken0
Date of Patent
January 13, 2009
0Patent Application Number
106742150
Date Filed
September 29, 2003
0Patent Primary Examiner
Patent abstract
The present invention combines low density parity checking with parallel equalization channels to enhance data retrieval from tape. Viterbi analysis is done as a precursor to the use of at least one low density parity decoder. A signal decoder may include a plurality of viterbi processors and at least one low density parity check decoder. The decoder may receive a plurality of pulse-shaped signals and produces decoded output signals.
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