| 摘要 |
The invention relates to a REED SOLOMON error correction code encoder and to a process using this encoder. According to this process, data symbols are encoded into code words using a modified REED SOLOMON error correction code (ECC) over GALOIS field and a generator polynomial having coefficients which are elements of the GALOIS field. The process comprises the following steps : - encoding data symbols plus predermined pseudo data symbols to produce ECC symbols, - ascertaining whether selected bits in each ECC symbols match a predetermined truncation pattern, - forming a code containing data symbols, peudo symbols and ECC symbols, if selected bits match the pattern, - modifying pseudo data symbols to provide modified pseudo data symbols to produce bits replacement ECC symbols, - forming a code word containing data symbols, modified pseudo data symbols and ECC symbols. |
