Reverse optical mastering for data storage disks
    41.
    发明授权
    Reverse optical mastering for data storage disks 有权
    用于数据存储磁盘的反向光学母盘

    公开(公告)号:US06728196B2

    公开(公告)日:2004-04-27

    申请号:US09850252

    申请日:2001-05-07

    Abstract: A data storage master disk and method of making a data storage master disk. 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. The master substrate is at least partially covered with a layer of photosensitive material. A surface relief pattern having master lands and master grooves 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.

    Abstract translation: 数据存储母盘和数据存储主盘的制作方法。 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。 该方法包括提供母板。 主基板至少部分地被感光材料层覆盖。 具有主平台和主槽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,以形成向下延伸到母板和感光材料层之间的衬底界面的母槽,使得在衬底界面处的母槽的宽度对应于所需的 复制地的宽度。

    Tracking techniques for holographic data storage media

    公开(公告)号:US06625100B2

    公开(公告)日:2003-09-23

    申请号:US09813065

    申请日:2001-03-20

    CPC classification number: G11B7/0938 G11B7/0065

    Abstract: In one embodiment, a holographic data storage medium includes a substrate, a holographic recording material, and an optically detectable tracking pattern on the medium. The substrate may have first and second substrate portions. The holographic recording material may be a photopolymer, and the medium may have a sandwiched construction, where the holographic recording material is sandwiched between the first and second substrate portions. The optically detectable tracking pattern may be replicated on at least one of the substrate portions. Alternatively, the optically detectable tracking pattern may be recorded as a holographic grating in the holographic recording material. The tracking pattern may facilitate the ability to pinpoint the location of the holographic bit maps on the holographic medium to within a fraction of a micron.

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