decodierungseinrichtung for a codesymbolengruppe, word for word beschuetzt by a double reed solomon code with minimum distance 5 between the hamming codesymbolen and a verschachtelter mechanism between the two codes, and a record player, such decodierungseinrichtung ent holding.

摘要

For the decoding of a data stream which is word-wise protected against errors by a double Reed-Solomon code with symbol-wise interleaving over the code words, first the reliability information for the constituent symbols is aggregated for a code word. Therefrom the strategy is determined, entailing the number of erase symbols and the maximum number of error symbols to be corrected. The correction result is compared with a reliability code and on the basis thereof all symbols obtain an at least trivalent secondary reliability indication for decoding in the second code.