Patent ID: 8291286
Filing Date: 2012-10-16
Classification: G11B,H03M

Abstract:
1. A decoding system for a high-density recording medium, comprising: a first memory for storing a high protective codeword; a high protective codeword decoder connected to the first memory for decoding the high protective codeword and correcting the high protective codeword into the first memory to produce a burst indicator subcode (BIS) erasure indicator with a position information; a BIS to LDC erasure generator connected to the first memory for producing a long-distance code (LDC) erasure bit for a low protective codeword based on the BIS erasure indicator; a second memory for storing the low protective codeword; and a low protective codeword decoder connected to the second memory and the BIS to LDC erasure generator for decoding the low protective codeword and correcting the low protective codeword into the second memory; wherein, during decoding, the low protective codeword decoder first decodes and corrects the low protective codeword, and then decodes and corrects the low protective codeword when the low protective codeword exceeds a decoding capability of the low protective codeword decoder.