Optical recording disc capable of preventing illegal copy
    2.
    发明授权
    Optical recording disc capable of preventing illegal copy 失效
    能够防止非法复制的光记录盘

    公开(公告)号:US06438097B1

    公开(公告)日:2002-08-20

    申请号:US09487867

    申请日:2000-01-20

    IPC分类号: G11B724

    摘要: Micro-pits or micro-pit strings, which are disabled precise copying by means of illegal copying described above and enable signals different from signals of a normal disc to be detected in case of failure in precise copying, are recorded in a copy protected area of an optical disc beforehand. A read unit checks the copy protected area and determines a loaded disc is legal disc or illegally copied disc. If illegal, reading is prohibitted.

    摘要翻译: 通过上述非法复制而禁止精确复制的微凹坑或微凹坑串被记录在复制保护区域的复制保护区域中,并且使得在精确复制失败的情况下能够检测到与普通盘的信号不同的信号被检测到 光盘。 读取单元检查复制保护区域,并确定加载的光盘是合法光盘或非法复制光盘。 如果非法,阅读被禁止。

    Disk kind identifying method and disk apparatus
    5.
    发明授权
    Disk kind identifying method and disk apparatus 失效
    磁盘种类识别方法和磁盘设备

    公开(公告)号:US07426164B2

    公开(公告)日:2008-09-16

    申请号:US10660773

    申请日:2003-09-12

    IPC分类号: G11B27/36

    摘要: A disk apparatus is for a disk, and a DVD-RW or a DVD+RW can be mounted as the disk. For example, a wobble signal is detected on the basis of a laser beam reflected by a recording surface of the disk. A CPU determines whether a cycle of the wobble signal (wobble cycle) is 32 times or 186 times as long as a data cycle on the basis of a detection result of a detecting circuit. Then, when the wobble cycle is 186 times as long as the data cycle, the disk kind is identified as the DVD-RW, and when the wobble cycle is 32 times as long as the data cycle, the disk kind is identified as the DVD+RW.

    摘要翻译: 磁盘装置用于磁盘,DVD-RW或DVD + RW可以作为磁盘安装。 例如,基于由盘的记录表面反射的激光束来检测摆动信号。 基于检测电路的检测结果,CPU确定摆动信号(摆动周期)的周期是数据周期的32倍或186倍。 然后,当摆动周期是数据周期的186倍时,磁盘种类被识别为DVD-RW,当摆动周期是数据周期的32倍时,磁盘种类被识别为DVD + RW。