Apparatus for decoding BCH code for correcting complex error

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371 391, H03M 1300

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active

051795604

ABSTRACT:
An apparatus for decoding a received BCH code signal for correcting a combined complex error is disclosed which includes a syndrome generating circuit for generating two n-bit syndromes corresponding to the received signal, a syndrome converting circuit for converting the two n-bit syndromes to a 2n-bit syndrome, a random error correcting circuit, a burst error correcting circuit, two combining circuits and output selecting circuit. The random error correcting circuit receives input as the two n-bit syndromes and outputs a random error correction signal to one of the combining circuits and the burst error correcting circuit receives as input the 2n-bit syndrome and outputs a burst error correction signal to the other of the combining circuits. The combining circuits combine the correction signals with the received BCH code signal. The output selecting circuit selectively outputs one of the combined signals from the combining circuits in accordance with the decoding conditions of the error correcting circuits and the result of a comparison between the decoded and error-corrected signals from the combining circuits.

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