Stored data error correction system

Details Stored data error correction system Stored data error correction system

1988-01-05

1990-03-13

Smith, Jerry

Excavating

360 53, G06F 1110

Patent

active

049088262

ABSTRACT:
In a multi-track digital recording medium, data blocks on different tracks are algebraically combined to generate an error correction code (ECC) stored in an ECC block on one of the tracks. Unrecoverable errors due to horizontal and vertical clustering of dropouts on magnetic tape, for example, are reduced by XOR-ing data blocks along a diagonal path traversing several tracks to form the ECC.

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D. M. Oldham, "Error Detection and Correction", IBM Technical Disclosure Bulletin, vol. 13, No. 12, May 1971, 3715.
A. M. Patel "Coding Scheme for Multiple Sections Error Correction", IBM Technical Disclosure Bulletin, vol. 17, No. 2, Jul. 1974, 473-475.
Arvind M. Patel "Adaptive Cross-Parity (AXP) Code for a High-Density Magnetic Tape Subsystem" IBM Journal of Research and Development, Nov. 1985, vol. 29, No. 6, 546-562.
P. Prusinkiewicz and S. Budkowski, "A Double Track Error Correction Code for Magnetic Tape", IEEE Transactions on Computers, Jun. 1976, vol. C.-25/No. 6, 643-645.

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