Excavating
Patent
1992-07-20
1995-01-03
Beausoliel, Jr., Robert W.
Excavating
371 371, 371 381, 371 391, H03M 1300
Patent
active
053793056
ABSTRACT:
A single Reed-Solomon code is employed with modifications to allow information systems the freedom of selecting redundancy from 1 to R symbols, where R is the number of redundant symbols that the unmodified Reed-Solomon code employs. If P is the number of discarded redundancy symbols, then R-P redundancy symbols are retained, and the minimum distance of the modified code is 1+R-P. The system uses one of several alternative decoding schemes. One general scheme employs error-and-erasure decoding, and treats the P deleted symbols as erasures. Another general scheme operates directly on the shortened, modified code-word and modifies both the error syndromes and the error information derived from the syndromes to compensate for the deleted symbols.
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Beausoliel, Jr. Robert W.
Cefalo Albert P.
De'cady Albert
Digital Equipment Corporation
Hudgens Ronald C.
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