AN OPTICAL DISC APPARATUS, A METHOD FOR PREVENTING AN UNAUTHORIZED USE OF AN OPTICAL DISC, COMPUTER-READABLE STORAGE MEDIUM STORING PROGRAM FOR PREVENTING AN UNAUTHORIZED USE OF A OPTICAL DISC

摘要

Is an object of the invention to a recording medium is provided a hybrid case of the disk, the information by, as well as reproducing, executing the determination of whether or not the regular products, even when information recording, more light to allow for certain fraud prevention disk device . ; When the first write operation that the reproduction operation, and if the judgment (S2), the reproducing operation (S3), the execution determination of whether or not the regular product, and (S4), and executes the reproduction process when the normal product (S5). Even when the recording operation at step S2 (S1), executes a determination of whether or not a normal product, and (S4), and executes the reproduction process when the normal product (S5). ; An optical disk, D / A converter, ROM, RAM, a spindle motor