Patent ID: 6779149
Filing Date: 2004-08-17
Classification: G11B,H03M

Abstract:
A method for error control processing of a block of DVD data, the method comprising:receiving a block of data having P rows of codeword symbols and Q columns of codeword symbols, where P and Q are selected positive integers; providing a number e(column) indicating a number of errors in at least one column of within the data block; when the number e(column) for at least N1 columns is larger than a selected column threshold error number e(thr;c), providing a distinguishable codeword value in a variable number of at least e(thr;c)+1 codeword positions for data in each of N2 rows within the data block, where N1 and N2 are selected positive integers with N2 e(thr;c)+1; and interpreting occurrence of at least e(thr;c)+1 distinguishable codeword values in at least one column within the data block as indicating that the data block contains at least one column with an uncorrectable error.