Encoder verifier

Details Encoder verifier Encoder verifier

1983-02-08

1985-07-02

Smith, Jerry

Excavating

371 37, G06F 1112

Patent

active

045272697

ABSTRACT:
An encoder verifier checks the functioning of a Reed-Solomon encoder in which data and parity bytes are intended to be digitally encoded in data blocks to form for each data block a respective codeword in multi-bit bytes in the form of a Galois field polynomial that is divisible in the Galois field by a generator polynomial, such generator polynomial being the Galois field product of a plurality of factors. A Galois field polynomial divider divides respective codewords by one of the factors to produce a remainder signal systematically related to the remainder from such division. An indicator responsive to the remainder signal produces an indication of encoder malfunction when the remainder signal corresponds to a remainder other than zero.

REFERENCES:
Boden, "Self-Checked Error-Correction Code Generator, ECC Comparer, Error Syndrome Decoder and Data Bit Corrector", IBM Technical Disclosure Bulletin, vol. 15, No. 5 (Oct. 1972).
Barsuhn et al., "Self-Testing ECC Logic", IBM Technical Disclosure Bulletin, vol. 20, No. 7, (Dec. 1977).

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