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公开(公告)号：US06738331B2
公开(公告)日：2004-05-18
申请号：US09779606
申请日：2001-02-09
IPC分类号： G11B7085
CPC分类号： G11B23/284 , G11B7/007 , G11B20/00086 , G11B20/00586
摘要： The disclosure relates to an optical disk of the type including at least one spiral track on which information marks are written in sectors whose addresses are substantially sequential along the track, wherein said disk includes a copy protection zone (PZ) comprising two parts of equal size each including a series of sectors designated by identical addresses on each of the two parts, the data written in this zone being shared between the sectors of the two parts, each sector of the zone also carrying an identifier (D1, D2) characteristic of the part to which the sector belongs, and specific protection data to enable verification of the presence and constitution of said protection zone (PZ) and to enable use of the data written in this zone, at least part of said specific protection data being recorded on said disk. The invention is notably applicable to anti-piracy protection of CD-ROM and DVD-ROM type disks.
摘要翻译： 本公开涉及一种类型的光盘，包括至少一个螺旋轨道，信息标记在其上沿着轨道基本上顺序地写入扇区中，其中所述盘包括复制保护区（PZ），该复制保护区包括两个相同大小的部分 每个部分包括在两个部分中的每一个上由相同地址指定的一系列扇区，写在该区域中的数据在两个部分的扇区之间共享，该区域的每个扇区还携带特征的标识符（D1，D2） 以及具体保护数据，以便能够验证所述保护区（PZ）的存在和构成，并且能够使用写在该区中的数据，至少部分所述特定保护数据被记录在所述保护区 磁盘。 本发明特别适用于CD-ROM和DVD-ROM型磁盘的防盗版保护。
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公开(公告)号：US06577561B2
公开(公告)日：2003-06-10
申请号：US09308255
申请日：1999-05-25
IPC分类号： G11B7085
CPC分类号： G11B23/281 , G11B7/007 , G11B20/00086 , G11B20/00586 , G11B20/00601
摘要： An anti-piracy recording disk. The disk includes a main recording track which has interruptions or changes of turn. This gives rise to non-sequential reading and therefore to information which is difficult to access. The copying of such a disk by conventional means is very difficult making it possible to easily detect counterfeits or to render any copy unusable.
摘要翻译： 防盗版录像盘。 磁盘包括具有中断或转弯变化的主记录磁道。 这导致非顺序读取，因此导致难以访问的信息。 通过常规方式复制这种盘是非常困难的，使得可以容易地检测到伪造品或使任何副本不可用。
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