Repeated decoding of product code during successive tape head ro

Details Repeated decoding of product code during successive tape head ro Repeated decoding of product code during successive tape head ro

1993-07-22

1995-07-04

Baker, Stephen M.

Excavating

G11B 2018

Patent

active

054307414

ABSTRACT:
A decoding apparatus in which for plural symbols arranged in a matrix fashion first and second error correction codes are encoded for each of the plural symbols respectively arranged in a first direction and in a second direction and in which input data is transmitted in the first direction. The decoding apparatus includes a first memory for writing input data, an error detector for detecting an error of the input data that is written into the first memory based on the first error correcting code and for generating error data from the first error correction code. A second memory is provided for writing error data of the first error correction code and an error corrector is provided for sequentially executing error corrections of the first and second error correction codes for the input data that is written into the first memory by using the error data of the first error correction code that is written into the second memory.

REFERENCES:
patent: 4646301 (1987-02-01), Okamoto et al.
patent: 4748628 (1988-05-01), Moriwaki
patent: 4796261 (1989-01-01), Moriwaki
patent: 4812924 (1989-03-01), Fukami et al.
D. Shenton et al., Improved Reed-Solomon Decoding Using Multiple-Pass Decoding, Journal of the Audio Engineering Society, vol. 33, No. 11, Nov. 1985, pp. 878-887.

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