Patent ID: 7230894

Claim:
An optical disk usable with an optical disk player, comprising: a BCA (Burst Cutting Area) code area in which a BCA code is written, the BCA code including BCA information and a disk code indicating a type of said disk, wherein the BCA code include an error correction code to correct errors in the BCA code, wherein, when said disk is mounted onto the optical disk player and the BCA code written on said disk is read by the optical disk player, the disk code contained in the read BCA code is extracted to discriminate the type of said disk mounted onto the optical disk player by comparing the disk code contained in the read BCA code with information previously stored in the optical disk player in which a plurality of disk codes corresponding to a plurality of different types of optical disks are mapped, and wherein the type of said disk indicates that said disk is a recordable or a non-recordable disk.