Importance

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Abstract

There is provided a disk/disk drive management system that is capable of setting limits to reproduction of a disk and a disk drive used for the disk reproduction, for example, setting limits to reproduction of a rental disk to prevent unrestricted copying. On a first storage region of a disk having optical information written thereto and a second storage region of the disk having an electronic circuit 11 mounted thereon, a plurality of arbitrary codes (A001 to A999) assigned uniquely to the disk are stored. When the disk is loaded into a disk drive 1, the plurality of codes are read in and written to a code memory 114 of the electronic circuit 11, and an unused code of the plurality of codes is written to a memory 14 provided in the disk drive 1 and/or to a management memory 115 provided on the electronic circuit 11. The disk drive information that was used or is being used, user information, and other information can also be written to the management memory 115. The reproduction of the disk, and the disk drive used for the disk reproduction, are controlled based on the information written to the memory 14 or management memory 115.

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First Claim