| 摘要 |
An information reproduction apparatus including an error corrector which performs a first error correction for correcting errors in a horizontal direction within an input data block comprised of a product code and subsequently a second error correction for correcting errors in a vertical direction within the same block is disclosed. The error corrector produces a first signal each time an incorrectable code word is detected while the first error correction is being performed. The apparatus further includes a first counter for counting the first signal, a comparator for comparing a count value of the first counter with a predetermined value and producing a second signal when the count value reaches the predetermined value, and a determination device determining that there is an error within the data block which the error corrector cannot correct, and delivering a third signal in response to the second signal to reread the data block.
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