Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1998-05-21
2000-11-14
De Cady, Albert
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
370204, H03M 1300
Patent
active
061484288
ABSTRACT:
A system and method are disclosed for modulation encoding data for storage or transmission on a multilevel medium. The method includes encoding a first portion of data using a first tier modulation code. The first tier modulation code maps a first portion of the data onto a first set of symbols. A second portion of data is encoded using a second tier modulation code. The second tier modulation maps the second portion of the data onto a second set of symbols. The second tier modulation code has error correcting characteristics. A third set of symbols is determined based on the first set of symbols and the second set of symbols. The third set of symbols is suitable to determine nominal read signal levels from a multilevel medium. Improved error characteristics are realized for encoding data for storage or transmission on a multilevel medium.
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McLaughlin Steve W.
Welch Lloyd R.
Wong Terrence L.
Cady Albert De
Calimetrics, Inc.
Lamarre Guy
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