Error correcting method and decoder with improved reliability

Details Error correcting method and decoder with improved reliability Error correcting method and decoder with improved reliability

1995-07-12

1998-01-27

Baker, Stephen M.

Excavating

371 374, G11B 2018

Patent

active

057128618

ABSTRACT:
A codeword contains information symbols representing elements of a Galois field, a parity check symbol generated using a certain element of the Galois field, and additional check symbols generated using a polynomial of which this certain element is not a root. The reliability of corrected codewords is assessed by counting the number of symbols found to be in error, or by counting the number of symbols having at least a certain number of bits in error. When a row-column array is decoded, rows of intermediate reliability are not corrected but their error patterns are stored in a memory, and columns of intermediate reliability are corrected if their error patterns match the error information stored in the memory.

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