| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for identifying an optical disk recording medium substrate which rapidly and accurately identifies identification information peculiar to the optical disk recording medium substrate such as a theme of music, for example, recorded time, a singer's name, classical music, new music, rock'n'roll, and also provide the optical disk recording medium substrate therefor. <P>SOLUTION: A plurality of identification mark patterns, which are provided in an arc form with a prescribed pitch on the surface of the optical disk recording medium substrate, are read by an image processing device, and the identification information peculiar to the optical disk recording medium substrate is identified base on the information thus read. <P>COPYRIGHT: (C)2004,JPO |
