Patent ID: 7496806

Claim:
An apparatus for transferring data with respect to a disc comprising a user data area to store user data, a spare area other than the user data area and which comprises a substitute area for a defective area existing in the user data area, and a temporary defect management area, the apparatus comprising: a pickup which emits or receives a light to transfer data with respect to the disc; and a controller which controls the pickup to read temporary defect information and temporary defect management information recorded for a recording operation for use by the recording and/or reproducing apparatus to perform disc defect management from the temporary defect management area of the disc, the temporary defect information comprising information on a position of the defective area and information on a position of the substitute area, the temporary defect management information comprising a pointer to a recording position of the temporary defect information, wherein: the temporary defect management information is used by the apparatus to manage the temporary defect information and includes an address area which comprises an address of last data that is last recorded in the user data area and an address indicating a next address of the spare area to be used for a substitute area for a next defective area.