| 摘要 |
A defect detection system, defect detection method and disc verification method for rewritable optical discs are provided A demodulator reads an optical disc to obtain a plurality of sectors corresponding to an ECC block along with parity inner (PI) and parity outer (PO) codes. A sector detector, coupled to the demodulator, decodes the PI codes to obtain defect information of the sectors. A memory is coupled to the sector detector, storing contents and defect information of the sectors. An ECC block detector decodes the PO codes, and determines defectiveness of the ECC block based on the defect information and the PO codes. A processor controls the PI and PO decoding procedures and a further PDL/SDL update procedure.
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