Error correction method

Details Error correction method Error correction method

1987-03-30

1988-07-26

Smith, Jerry

Excavating

371 37, G06F 1110

Patent

active

047605766

ABSTRACT:
An error correction method for successively correcting burst errors which may occur in product-coded data while the data is successively transmitted along its row (or column) direction, in which 1-symbol errors are detected and corrected by a C.sub.2 parity provided to correct data errors of the product-coded data in its column (or row) direction and which is capable of detecting and correcting 1-symbol errors and effecting an erasure correction on up to 2-symbol errors and in which when it is detected that a burst error has occurred, which cannot be corrected by a C.sub.1 parity provided to correct data errors in the row (or column) direction, and such burst error extends over 3 rows (or columns), inherent 2-symbol errors within such burst error are detected from 3-symbol errors which are located in columns (or rows) before and after the columns (or rows) at which 1-symbol errors are detected and corrected by the C.sub.2 parity with reference to detection information of the burst error detected by the C.sub.1 parity and then an erasure correction is effected on such 2-symbol errors thus detected.

REFERENCES:
patent: 4336612 (1982-06-01), Inoue
patent: 4630272 (1986-12-01), Fukami
patent: 4653052 (1987-03-01), Doi
J. Marshall, "Delimiting Burst Errors", IBM TDB, vol. 18, No. 6, Nov. 1975, pp. 1730-1731.

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