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    • 2. 发明申请
    • ANTI-PIRACY FEATURE FOR OPTICAL DISCS
    • 光盘的防伪功能
    • WO2016053921A1
    • 2016-04-07
    • PCT/US2015/052760
    • 2015-09-29
    • MICROSOFT TECHNOLOGY LICENSING, LLC
    • DOMKE, FelixMCGRAIL, Kenneth M
    • G11B20/00G11B7/24
    • G11B20/00601G11B7/007G11B7/14G11B7/24076G11B7/24091G11B7/261G11B20/00086G11B20/00123G11B20/00695G11B2007/00709G11B2007/00727
    • Disclosed are techniques and systems for manufacturing an optical disc having a stochastic (i.e., non-deterministic) anti-piracy feature in the form of a multi-spiral structure, and for verifying the feature on the optical disc to authenticate the disc for playback. The multi-spiral structure may be comprised of multiple partially interleaved, and partially overlapping, spiral data tracks formed in a designated area of the optical disc. A process of forming the multi-spiral structure may include forming, in the designated area, a first spiral data track with first track pitch and a second spiral data track with second track pitch that is different than the first track pitch. The multi-spiral structure may be analyzed to determine verification parameters for verifying the multi-spiral structure, and those verification parameters may be encrypted so that they may be subsequently decrypted and used to verify the multi-spiral structure on a disc reading device.
    • 公开了用于制造具有多螺旋结构形式的随机(即非确定性)反盗版特征的光盘的技术和系统,并且用于验证光盘上的特征以认证该盘用于重放。 多螺旋结构可以由形成在光盘的指定区域中的多个部分交错和部分重叠的螺旋数据轨道组成。 形成多螺旋结构的过程可以包括在指定区域中形成具有第一轨道间距的第一螺旋数据轨道和具有不同于第一轨道间距的第二轨道间距的第二螺旋数据轨迹。 可以分析多螺旋结构以确定用于验证多螺旋结构的验证参数,并且可以对这些验证参数进行加密,使得它们可以随后被解密并用于验证盘读取装置上的多螺旋结构。
    • 5. 发明申请
    • REVERSE OPTICAL MASTERING FOR DATA STORAGE DISKS
    • 数据存储盘的反向光学主控
    • WO99052105A1
    • 1999-10-14
    • PCT/US1999/007258
    • 1999-04-02
    • G11B7/007G11B7/26G11B23/00
    • G11B7/24091G11B7/24G11B7/261G11B7/263G11B23/0085Y10S425/81
    • A data storage master disk and method of making a data storage master disk (20). The data storage disk master is for use in a data storage disk replication process. The data storage disk molding processes produces replica disks having a surface relief pattern with replica lands and replica grooves. The method includes providing a master substrate (32). The master substrate is at least partially covered with a layer of photosensitive material (30). A surface relief pattern having master lands (34) and master grooves (36) is recorded in the data storage disk master, including the steps of exposing and developing the photosensitive material. The exposing and developing of a specified thickness of photosensitive material is controlled to form master grooves extending down to a substrate interface between the master substrate and the layer of photosensitive material, such that the width of the master grooves at the substrate interface corresponds to a desired width of the replica lands.
    • 数据存储母盘和制造数据存储母盘的方法(20)。 数据存储磁盘主机用于数据存储磁盘复制过程。 数据存储盘模制过程产生具有表面浮雕图案的复制盘,其具有复制区域和复制凹槽。 该方法包括提供主基板(32)。 主衬底至少部分被感光材料层(30)覆盖。 具有主平台(34)和主凹槽(36)的表面浮雕图案被记录在数据存储盘主机中,包括曝光和显影感光材料的步骤。 控制感光材料的指定厚度的曝光和显影以形成向下延伸到主基片和感光材料层之间的基底界面的母槽,使得基底界面处的主凹槽的宽度对应于所需的 复制地的宽度。