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US 6,381,726 B1Granted
Architecture for soft decision decoding of linear block error correcting codes
AssigneeMaxtor Corporation
InventorLih-Jyh Weng
Life of this patent
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Abstract
A method and apparatus for decoding a corrupted code word is described. Decoding is accomplished by using a decoder that has a common measure of reliability for each symbol of the corrupted code word and determining whether a useful result can be obtained from the first decoder. If a useful result can not be obtained decoding the corrupted code word is accomplished with a second decoder that uses unique values of reliability for each symbol of the corrupted code word.
Claims20
A method of decoding a corrupted code word comprising:
- decoding the corrupted code word with a first decoder that uses a common measure of reliability for each symbol of the corrupted code word;
- determining whether a useful result can be obtained from the decoding with the first decoderp;
- and if not, then
- decoding the corrupted code word with a second decoder that uses unique values of reliability for each symbol of the corrupted code word.
1 more element
A system to decode a corrupted word for a linear block error correcting code comprises:
- a hard decoder that has a common measure of reliability for each symbol of a corrupted code word;
- logic that determines whether a useful result can be obtained from the hard decoder and,
- a soft-decision decoder that uses unique values of reliability for each symbol of the corrupted code word.
Dependencies are inferred from the claim text.