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    • 1. 发明授权
    • Multi-stage focus actuator and optical head
    • 多级聚焦执行器和光头
    • US08385178B2
    • 2013-02-26
    • US12977412
    • 2010-12-23
    • Xeufeng WangJohn Erik HersheyZhiyuan RenXiaohong Li
    • Xeufeng WangJohn Erik HersheyZhiyuan RenXiaohong Li
    • G11B7/00
    • G11B7/083G11B7/0927G11B2007/0009
    • Techniques are provided for using a multi-stage actuator to actuate one or more optical components of an optical head. The multi-stage actuator includes a cross-layer displacement component which actuates an optical component to change the beam focus in a displacement range corresponding to the thickness of the data layers in a holographic disk, such that a beam is impinged on the target data layer. The multi-stage actuator also includes a intra-layer focusing component which actuates the optical component in a smaller range to focus the beam on the target data position. The cross-layer displacement component and the intra-layer focusing component may each include more than one actuator. In some embodiments, the focusing component also actuates the optical component in a tilting motion to compensate for movement or imperfections of the disk during a reading or recording process.
    • 提供了使用多级致动器致动光学头的一个或多个光学部件的技术。 多级致动器包括跨层位移部件,其驱动光学部件以在与全息光盘中的数据层的厚度相对应的位移范围内改变光束聚焦,使得光束撞击在目标数据层上 。 多级致动器还包括内部聚焦部件,该部件在较小范围内致动光学部件,以将光束聚焦在目标数据位置上。 跨层位移分量和层内聚焦分量可以各自包括多于一个的致动器。 在一些实施例中,聚焦部件还以倾斜运动来致动光学部件,以在读取或记录过程期间补偿光盘的运动或不完美。
    • 2. 发明授权
    • Method and system for processing information from optical disk layers
    • 从光盘层处理信息的方法和系统
    • US08520483B2
    • 2013-08-27
    • US12846085
    • 2010-07-29
    • Xiaohong LiXuefeng WangZhiyuan RenJohn Erik HersheyJohn Anderson Fergus Ross
    • Xiaohong LiXuefeng WangZhiyuan RenJohn Erik HersheyJohn Anderson Fergus Ross
    • G11B7/00
    • G11B7/0065
    • A method for processing information is provided. The method includes directing a laser beam to a first track of a first layer of a holographic storage medium. The method also includes recording a base voltage based on a look-up table. The method includes directing the laser beam to a target track in the first layer, based on position information in tracks. Further, the method includes recording an offset voltage for the target track into the look-up table. Still further, the method includes directing the laser beam to a target layer based on position information in vertical wobbles. The method also includes recording an offset voltage for the target layer into the look-up table. Finally, the method includes determining a final voltage based on the look-up table and applying the final voltage to an actuator for moving the laser beam to a final target position in the holographic storage medium for recording and retrieval of information.
    • 提供了一种处理信息的方法。 该方法包括将激光束引导到全息存储介质的第一层的第一轨道。 该方法还包括基于查找表记录基本电压。 该方法包括基于轨道中的位置信息将激光束引导到第一层中的目标轨道。 此外,该方法包括将目标轨迹的偏移电压记录到查找表中。 此外,该方法包括基于垂直摆动中的位置信息将激光束引导到目标层。 该方法还包括将目标层的偏移电压记录到查找表中。 最后,该方法包括基于查找表确定最终电压,并将最终电压施加到用于将激光束移动到全息存储介质中的最终目标位置的致动器,用于记录和检索信息。
    • 3. 发明申请
    • METHOD AND SYSTEM FOR PROCESSING INFORMATION FROM OPTICAL DISK LAYERS
    • 从光盘层处理信息的方法和系统
    • US20120026855A1
    • 2012-02-02
    • US12846085
    • 2010-07-29
    • Xiaohong LiXuefeng WangZhiyuan RenJohn Erik HersheyJohn Anderson Fergus Ross
    • Xiaohong LiXuefeng WangZhiyuan RenJohn Erik HersheyJohn Anderson Fergus Ross
    • G11B7/00
    • G11B7/0065
    • A method for processing information is provided. The method includes directing a laser beam to a first track of a first layer of a holographic storage medium. The method also includes recording a base voltage based on a look-up table. The method includes directing the laser beam to a target track in the first layer, based on position information in tracks. Further, the method includes recording an offset voltage for the target track into the look-up table. Still further, the method includes directing the laser beam to a target layer based on position information in vertical wobbles. The method also includes recording an offset voltage for the target layer into the look-up table. Finally, the method includes determining a final voltage based on the look-up table and applying the final voltage to an actuator for moving the laser beam to a final target position in the holographic storage medium for recording and retrieval of information.
    • 提供了一种处理信息的方法。 该方法包括将激光束引导到全息存储介质的第一层的第一轨道。 该方法还包括基于查找表记录基本电压。 该方法包括基于轨道中的位置信息将激光束引导到第一层中的目标轨道。 此外,该方法包括将目标轨迹的偏移电压记录到查找表中。 此外,该方法包括基于垂直摆动中的位置信息将激光束引导到目标层。 该方法还包括将目标层的偏移电压记录到查找表中。 最后,该方法包括基于查找表确定最终电压,并将最终电压施加到用于将激光束移动到全息存储介质中的最终目标位置的致动器,用于记录和检索信息。
    • 4. 发明申请
    • MULTI-STAGE FOCUS ACTUATOR AND OPTICAL HEAD
    • 多级聚焦执行器和光头
    • US20120163140A1
    • 2012-06-28
    • US12977412
    • 2010-12-23
    • Xuefeng WangJohn Erik HersheyZhiyuan RenXiaohong Li
    • Xuefeng WangJohn Erik HersheyZhiyuan RenXiaohong Li
    • G11B7/085
    • G11B7/083G11B7/0927G11B2007/0009
    • Techniques are provided for using a multi-stage actuator to actuate one or more optical components of an optical head. The multi-stage actuator includes a cross-layer displacement component which actuates an optical component to change the beam focus in a displacement range corresponding to the thickness of the data layers in a holographic disk, such that a beam is impinged on the target data layer. The multi-stage actuator also includes a intra-layer focusing component which actuates the optical component in a smaller range to focus the beam on the target data position. The cross-layer displacement component and the intra-layer focusing component may each include more than one actuator. In some embodiments, the focusing component also actuates the optical component in a tilting motion to compensate for movement or imperfections of the disk during a reading or recording process.
    • 提供了使用多级致动器致动光学头的一个或多个光学部件的技术。 多级致动器包括跨层位移部件,其驱动光学部件以在与全息光盘中的数据层的厚度相对应的位移范围内改变光束聚焦,使得光束撞击在目标数据层上 。 多级致动器还包括内部聚焦部件,该部件在较小范围内致动光学部件,以将光束聚焦在目标数据位置上。 跨层位移分量和层内聚焦分量可以各自包括多于一个的致动器。 在一些实施例中,聚焦部件还以倾斜运动来致动光学部件,以在读取或记录过程期间补偿光盘的运动或不完美。