| 摘要 |
CIRC code decoding includes for each input frame a one-symbol delay operation of every second data symbol and the inversion of parity symbols, C1 word decoding, de-interleaving, C2 word decoding, and a two-symbol delay operation before output. The error correction capabilities can be improved if the C1 word decoding, de-interleaving and C2 word decoding are carried out twice (double pass operation) before the two-symbol delay operation and output. The invention allows double pass operation as well as single pass operation and uses a single memory with minimum capacity, wherein to three parts of the memory specific operations are assigned and wherein the memory is controlled in a special way. <IMAGE>
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