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    Disk drive and pre-pit detection method
    3.
    发明公开
    Disk drive and pre-pit detection method 有权
    驱动器和预坑检测方法

    公开(公告)号：EP1443501A3

    公开(公告)日：2006-08-02

    申请号：EP03022923.1

    申请日：2003-10-09

    申请人： SONY CORPORATION

    发明人： Sano, Tatsushi ,  Bamba, Mitsuyuki ,  Miyoshi, Toshimasa

    IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/004 ,  G11B3/90

    CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B27/19 ,  G11B2220/2566

    摘要： A push-pull signal is detected from a disk-shaped storage medium on which wobbling grooves are formed as recording tracks and address information is recorded by forming pre-pits on lands between adjacent grooves. The detected push-pull signal is compared with a reference voltage thereby generating a land pre-pit detection signal. Of pulses included in the land pre-pit detection signal, those pulses having a small pulse width are regarded as noise pulses and removed thereby obtaining a corrected land pre-pit detection signal. The number of pulses included in the land pre-pit detection signal is counted, and the reference voltage is controlled in accordance with the counted number of pulses.

    METHOD AND SYSTEM FOR AUTHENTICATING AN OPTICAL DISC USING PURPOSEFULLY PROVIDED DATA ERRORS
    4.
    发明公开
    METHOD AND SYSTEM FOR AUTHENTICATING AN OPTICAL DISC USING PURPOSEFULLY PROVIDED DATA ERRORS 审中-公开
    方法和系统的光盘使用下面的验证特意READY暴露的数据错误

    公开(公告)号：EP1362347A1

    公开(公告)日：2003-11-19

    申请号：EP02714791.7

    申请日：2002-01-25

    申请人： Hide & Seek Technologies, Inc.

    发明人： SCHNECK, Karl ,  WELDON, James, J. ,  SMITH, Jerry, R.

    IPC分类号： G11B5/09 ,  G11B3/90

    CPC分类号： G11B23/281 ,  G11B7/00375 ,  G11B7/00736 ,  G11B7/24085 ,  G11B7/257 ,  G11B7/26 ,  G11B19/12 ,  G11B20/00086 ,  G11B20/0092 ,  G11B20/00927

    摘要： Methods for manufacturing optical discs with purposefully provided errors therein are disclosed, wherein the error instances can be used to identify the authenticity of the optical disc. Additionally, methods for determining the authenticity of an optical disc are disclosed, wherein values derived from descriptors of errors found on the disc (536) are compared with corresponding known values indicative of an authentic disc (540) for determining whether the disc was legitimately manufactured or not (548). Such methods may utilize errors that are correctable, uncorrectable, trackable, and/or untrackable. An end user (or the end user's optical reading laser) may be instructed to purposefully alter a portion of the disc in a predetermined manner (516) so that an unauthorized copy of the disc is easily discoverable by, e.g., activation of an authentication program on the disc or accessible via a network such as the Internet (508). Embodiments of the present invention may be used to manufacture optical discs with predetermined limits on the accessibility of the data thereon.

    CONTENT REPLICATION DETERRENT METHOD ON OPTICAL DISCS
    7.
    发明公开
    CONTENT REPLICATION DETERRENT METHOD ON OPTICAL DISCS 审中-公开
    吸毒者协会

    公开(公告)号：EP1493147A4

    公开(公告)日：2008-12-24

    申请号：EP03746657

    申请日：2003-04-09

    申请人： VERIFICATION TECHNOLOGIES INC

    发明人： SELINFREUND RICHARD H ,  GERGER SCOTT ,  GOYETTE DONALD R ,  VIG RAKESH ,  LI JUNZHONG

    IPC分类号： G11B7/007 ,  G11B7/257 ,  G11B7/26 ,  G11B19/12 ,  G11B20/00 ,  G11B20/10 ,  G11B23/28 ,  G11B3/90

    CPC分类号： G11B23/282 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/257 ,  G11B7/26 ,  G11B7/266 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/00927 ,  G11B23/281

    摘要： The invention includes both methods for authenticating optical storage media and methods for providing means for authenticating optical storage media actually on the optical recording medium. One of the methods for providing authentication means metalizes a portion of the optical recording medium (36), followed by spin coating the previously uncoated portion of the recording medium with an optical state changing security material (34), followed by overcoating this with a reflective layer (34). Correctable or uncorrectable errors may be placed in predetermined areas of the medium and the presence of these detected to authenticate the optical recording medium and distinguish it from an unauthorized duplicate or copy.

    摘要翻译： 本发明包括用于认证光存储介质的方法和用于提供用于在光记录介质上实际认证光存储介质的装置的方法。 用于提供认证手段的方法之一是金属化光学记录介质（36）的一部分，随后用光学状态改变的安全材料（34）旋涂记录介质的先前未涂覆部分，随后用反射涂层 层（34）。 可以在介质的预定区域中放置可纠正或不可纠正的错误，并检测这些错误的存在以认证光学记录介质并将其与未经授权的复制或复制区分开。

    CONTENT REPLICATION DETERRENT METHOD ON OPTICAL DISCS
    9.
    发明公开
    CONTENT REPLICATION DETERRENT METHOD ON OPTICAL DISCS 审中-公开
    光盘上的内容复制方法

    公开(公告)号：EP1493147A2

    公开(公告)日：2005-01-05

    申请号：EP03746657.0

    申请日：2003-04-09

    申请人： Verification Technologies, Inc.

    发明人： SELINFREUND, Richard, H. ,  GERGER, Scott ,  GOYETTE, Donald, R. ,  VIG, Rakesh ,  LI, Junzhong

    IPC分类号： G11B3/90

    CPC分类号： G11B23/282 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/257 ,  G11B7/26 ,  G11B7/266 ,  G11B19/122 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/00927 ,  G11B23/281

    摘要： The invention includes both methods for authenticating optical storage media and methods for providing means for authenticating optical storage media actually on the optical recording medium. One of the methods for providing authentication means metalizes a portion of the optical recording medium (36), followed by spin coating the previously uncoated portion of the recording medium with an optical state changing security material (34), followed by overcoating this with a reflective layer (34). Correctable or uncorrectable errors may be placed in predetermined areas of the medium and the presence of these detected to authenticate the optical recording medium and distinguish it from an unauthorized duplicate or copy.

    摘要翻译： 本发明包括用于认证光存储介质的方法和用于提供用于在光记录介质上实际认证光存储介质的装置的方法。 用于提供认证手段的方法之一是金属化光学记录介质（36）的一部分，随后用光学状态改变的安全材料（34）旋涂记录介质的先前未涂覆部分，随后用反射涂层 层（34）。 可以在介质的预定区域中放置可纠正或不可纠正的错误，并检测这些错误的存在以认证光学记录介质并将其与未经授权的复制或复制区分开。