Patent ID: 6574774
Filing Date: 2003-06-03
Classification: G11B,H03M

Abstract:
A method for generating a parity symbol sequence of a code, said method comprising the steps of:(a) receiving a sequence representing an m-symbol address and a data sequence of k data symbols: (b) multiplying said sequence representing an m-symbol address by a set of multiplier symbols to generate a first sequence of product symbols that is equal to the sum of a first polynomial product sequence and a second polynomial product sequence wherein the last r coefficients of the first polynomial product sequence are zero and the degree of the second polynomial product sequence is one less than the number of parity symbols; (c) adding said first sequence of product symbols to said data sequence of k data symbols prior to generating a first parity sequence for the sum of the data sequence of k data symbols plus the first polynomial product sequence during a data transmission phase for the first k symbols of the codeword; and (d) adding said second polynomial product sequence directly to said first parity sequence during a parity transmission phase for a number of symbols at the end of the codeword to generate the final parity sequence.