Method and apparatus for generating, recording and...

G - Physics – 11 – B

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G11B 20/12 (2006.01) G11B 20/18 (2006.01) H03M 13/00 (2006.01) H03M 13/15 (2006.01) H03M 13/29 (2006.01) H03M 13/35 (2006.01) H04L 1/00 (2006.01)

Patent

CA 2190985

There is provided a method of processing data for generating an error correction product code block devised so as to maintain the current level of redundancy after the error correcting ability is modified as a result of advancement of simiconductor and data recording/transmission technologies. Unlike any known technique of configuring a Reed-Solomon error correcting product code block of (M+PO)x(N+PI) bytes for an information data of (MxN) bytes, an error correcting product code block data structure is obtained by configuring a (Kx(M+1)x(N+P))-byte Reed-Solomon error correcting product code block for (KxMxN)-byte data, making K variable to consequently make the entire size of the Reed-Solomon error correcting product code block variable. At the same time, the error correcting ability varies in proportion to the value of K without increasing redundancy.

En harmonie avec les progrès accomplis dans le domaine des semiconducteurs et des techniques de transmission et d'enregistrement, une capacité de correction d'erreurs est améliorée par l'accroissement de la taille de tout un bloc de code de produit de correction d'erreurs Reed-Solomon, avec un coefficient de redondance qui est maintenu constant. A la différence de la façon dont un bloc de code de produit de correction d'erreurs Reed-Solomon de (M + PO) x (N + PI) octets est constitué de manière classique pour des données d'information de (M x N) octets, un bloc de code de produit de correction d'erreurs Reed-Solomon de (K x (M + 1) x (N + P)) octets est constitué (A, B, C) pour des données d'information de (K x M x N) octets de telle façon que K soit rendu variable pour rendre variable la taille d'un bloc entier de code de produit de correction d'erreurs Reed-Solomon, ce qui permet de changer de façon substantielle une capacité de correction d'erreurs en proportion de K, sans accroître le coefficient de redondance.

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