Patent ID: 6385148
Filing Date: 2002-05-07
Classification: G11B,H03M

Abstract:
An apparatus for reproducing information recorded on an information recording medium including a volume space for recording user data; a spare area including a replacement area which is usable in place of a defective area included in the volume space; and a defect management information area for recording defect management information for managing the defective area, the defect management information including status information indicating whether the defective area is replaced by the replacement area, the apparatus comprising:a determination section for determining whether the defective area is replaced by the replacement area with reference to the status information; and a control section for controlling a reproduction operation of the user data according to the determination result, wherein the defective area is detected as a unit of a ECC block which is a unit of an error correction operation, the error correction operation includes a first error correction operation for correcting errors within a single sector and a second error correction operation for correcting errors over a plurality of sectors, and when the defective area is not replaced by the replacement area, the control section performs the first error correction operation for the data in the defective area so as to output data which is corrected by the first error correction operation.