| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical disk and an optical disk discrimination method, wherein an optical disk where high-reflectance places are regularly set in a peripheral direction is easily specified in a short time. SOLUTION: The optical disk device 10 is provided with a pickup part 11, a pickup control part 20, a data reproducing circuit 26, a PLL control circuit 27, a CPU 31, a RAM 32, a ROM 33, a LED driving circuit 34a, a LED display part 34b, and an interface circuit 35. The CPU 31 functions, based on an optical disk discrimination program stored in the ROM 33, at least as a CD/DVD determination means, a disk type determination means, a thread motor driving means, a focus servo execution means, an all added signal output acquisition means, a threshold calculation means, a peak number calculation means, and a high-reflectance place number collation means. COPYRIGHT: (C)2008,JPO&INPIT
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