Patent ID: 7869319

Claim:
An apparatus for reproducing data from an optical recording medium, the apparatus comprising: a pickup which emits or receives a light to transfer data with respect to the medium comprising a predetermined area to store a replacement block to replace a defective block having a defect in a user data area, and a defect list; and a controller which controls the pickup to read the defect list comprising at least one defect list entry, the defect list entry having a first pointer pointing to a physical location of the defective block and a second pointer pointing to a physical location of the replacement block corresponding to the defective block and status information of the defective block and the replacement block, from the predetermined area in the optical recording medium, wherein the status information comprises first information indicating whether the defective block is single or consecutive and, if the defective block is consecutive, second information indicating whether the defective block is a start block or an end block among the consecutive defective block, and wherein the defect list further comprises information on total number of defect list entries contained in the defect list, and the total number of defect list entries is sum of the number of defect list entries which have the first information indicating that the defective block is consecutive and the second information indicating that the defective block is the start block, and the number of defect list entries which have the first information indicating that the defective block is consecutive and the second information indicating that the defective block is the end block.