Patent ID: 7139961
Filing Date: 2006-11-21
Classification: G11B,H03M

Abstract:
1. Method for decoding error correction code, e.g. CIRC code, characterised by the steps: storing a current frame of coded data symbols including error correction bits into a first part of a memory; writing said current frame of data symbols, thereby delaying part of the data symbols by one data symbol period, into a second part of said memory, these data symbols then representing a C1 code word; reading said C1 code word from said memory, carrying out on said C1 code word a C1 decoding including a first error correction, and writing the corrected C1 code word into said second part of said memory; reading said corrected C1 code word from said memory, carrying out on said corrected C1 code word a de-interleaving and a C2 decoding including a second error correction or an erasure correction; storing the resulting corrected C2 code word into a third part of said memory; reading ( outputting the corrected data symbols of the current frame from said third part of said memory.