Patent ID: 6981197
Filing Date: 2005-12-27
Classification: G11B,H03M

Abstract:
1. An interleave type decoding method, comprising steps of: receiving an interleaved block containing a number, L, of interleaved codewords, wherein the interleaving was done in such a manner that any L consecutive symbols consist of exactly one symbol from each of the L codewords, the interleaved codewords being made up of symbols; de-interleaving the interleaved block of symbols to obtain estimated codewords for the block of symbols, wherein errors may be present in the symbols; performing a first decoding of the estimated codewords by using a first error correction code; marking erasure positions in uncorrectable estimated codewords; performing a second decoding of the estimated codewords where the second decoding is at least partially based on the erasure positions marked from correctable estimated codewords; and whereby the first and second decoding enhances the error correction capability to a number, L·(t