Dual error correction code

Details Dual error correction code Dual error correction code

1997-04-07

1999-09-21

Baker, Stephen M.

Excavating

371 378, 371 4018, H03M 1300

Patent

active

059563516

ABSTRACT:
A method of detecting errors in a data stream being transmitted in a computer system, e.g., from a memory array to a memory controller, by determining whether the encoding was performed using a first encoding method or a second encoding method, and thereafter decoding the data stream using a logic circuit based on a single parity-check matrix. The entire parity-check matrix is used to decode the data stream if the first encoding method was used, and a subset of the parity-check matrix is used to decode the data stream if the second encoding method was used. Encoding according to the first method allows correction of all single-symbol errors and detection of all double-symbol errors in the data stream, and encoding according to the second method allows correction of all single-bit errors and detection of all double-bit errors in the data stream. The subset matrix may be permuted if the second encoding method was used, to create a permuted matrix further allowing detection of single-symbol errors. In an exemplary embodiment, the parity-check matrix is a (76,66) matrix and the subset of the parity-check matrix is a (72,64) matrix.

REFERENCES:
patent: 4359772 (1982-11-01), Patel
patent: 4402045 (1983-08-01), Krol
patent: 4538270 (1985-08-01), Goodrich, Jr. et al.
patent: 4958350 (1990-09-01), Worley, III et al.
patent: 5068858 (1991-11-01), Blaum et al.
patent: 5224167 (1993-06-01), Taniguchi et al.
patent: 5355377 (1994-10-01), Venkidu et al.
patent: 5418796 (1995-05-01), Price et al.
patent: 5425038 (1995-06-01), Chen
patent: 5450423 (1995-09-01), Iwasaki et al.
patent: 5515507 (1996-05-01), Byers et al.
patent: 5541941 (1996-07-01), Dell et al.

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