| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a disk capable of protecting copyright and the like as hardware with a simple system and to provide a storage device and the reproducing device of the disk. <P>SOLUTION: In the disk 1, a reproducing signal is detected while the disk is rotated relatively to a data detecting point of the reproducing device. The disk comprises a disk-like substrate 2; a reproducible data storage area 3 formed concentrically to the rotary center of the substrate 2; and a storage cell device 4 disposed concentrically to the rotary center on the surface of the substrate 2 on the inner peripheral side of the data storage area 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
