Patent ID: 6760878
Filing Date: 2004-07-06
Classification: G11B

Abstract:
An information reproduction apparatus comprising: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 said input data block, said error corrector producing a first signal each time an uncorrectable code word is detected while said first error correction is being performed; a first counter for counting said first signal; a comparator for comparing a count value of said first counter with a predetermined value and producing a second signal when said count value reaches said predetermined value; a determination device determining that there is an error within said input data block which said error corrector cannot correct, and delivering a third signal in response to said second signal; and a controller for controlling a data reading device to re-read said input data block in response to said third signal so that said controller initiates re-reading of said input data block before said error corrector performs said second error correction.