Error correction in multi-valued (p,k) codes
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United States of America Patent
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Dec 1, 2015
Grant Date -
Jan 17, 2008
app pub date -
Jul 11, 2007
filing date -
Jul 12, 2006
priority date (Note) -
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Abstract
Methods, apparatus and systems for error correction of n-valued symbols in (p,k) codewords including Reed Solomon codes of p n-valued symbols with n>2 and k information symbols have been disclosed. Coders and decoders using a Linear Feedback Shift Registers (LFSR) are applied. An LFSR can be in Fibonacci or Galois configuration. Errors can be corrected by execution of an n-valued expression in a deterministic way. Error correcting methods using Galois arithmetic are disclosed. Methods using Cramer's rule are also disclosed. Deterministic error correction methods based on known symbols in error are provided, making first determining error magnitudes not necessary. An error location methods using up and down state tracking is provided. Methods and apparatus executing the methods with binary circuits are also disclosed. Systems using the error correcting methods, including communication systems and data storage systems are also provided.
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