Cyclic coding and cyclic redundancy code check processor

Details Cyclic coding and cyclic redundancy code check processor Cyclic coding and cyclic redundancy code check processor

1994-01-25

1996-05-14

Envall, Jr., Roy N.

Excavating

371 371, H03M 1300

Patent

active

055175120

ABSTRACT:
A cyclic coding and cyclic redundancy check processor for a generator polynomial G(X) with a degree of m (m is an integer satisfying m.ltoreq.n/2) by units of n bits comprising a residue table storage section to store a residue table containing 2.sup.n pieces of residue data each having n/2 bits obtained by divisions of 2.sup.n pieces of data having n bits by the generator polynomial, a data read section to read out the data having predetermined number of bits for cyclic coding by units of n bits, an address generation section to generate addresses of the residue data to be read out from the residue table storage section, a residue data read section to read the residue data out of the residue table storage section according to the generated address, a processing section for shifting and saving of the data subjected to cyclic coding and a data synthesis section for synthesis of the data shifted or saved and the read out residue data.

REFERENCES:
patent: 4964129 (1990-10-01), Bowden, III et al.
patent: 5099484 (1992-05-01), Smelser
patent: 5359468 (1996-10-01), Rhodes et al.

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