Patent ID: 7668057
Filing Date: 2010-02-23
Classification: G11B

Abstract:
1. An apparatus to reproduce data from a recording medium comprising a data area disposed between a lead-in area and a lead-out area, including a user data area and at least a spare area having a replacement area to replace a defective area occurring in the user data area; and a defect management area arranged in at least one of the lead-in area and the lead-out area to record defect information to identify positions of the defective area and the replacement area, and the defect management information to manage the defect information, comprising: a reading unit arranged to reproduce data from the recording medium; and a controller arranged to control the reading unit to reproduce data from the recording medium by reading position information regarding the defective area, which is written together with the data for replacing the defective area, from the replacement area located in the spare area, and recovering the defect information using the position information regarding the defective area.