| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem in which: for managed copy, if each disk of copy sources can be identified individually, information on how many times copies are made from the disk can be obtained and therefore various services will be realized, but a BCA (Burst Cutting Area), effective for identification of individual disks, needs recording for each disk with a laser, which leads to increase in manufacturing cost. <P>SOLUTION: Processing of copy permission is switched depending on whether identification information of the optical disk is identification information which includes solid identification information or identification information which does not include solid identification information. <P>COPYRIGHT: (C)2012,JPO&INPIT |
