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    Servoing system for master with parallel tracks in a holographic replication system
    1.
    发明授权
    Servoing system for master with parallel tracks in a holographic replication system 有权
    全息复制系统中具有并行轨道的主站的伺服系统

    公开(公告)号：US08254224B2

    公开(公告)日：2012-08-28

    申请号：US12949628

    申请日：2010-11-18

    申请人： Xeufeng Wang ,  Pierino Gianni Bonanni ,  Xiaolei Shi ,  Zhiyuan Ren ,  Hua Xia ,  Victor Petrovich Ostroverkhov ,  Xinghua Wang

    发明人： Xeufeng Wang ,  Pierino Gianni Bonanni ,  Xiaolei Shi ,  Zhiyuan Ren ,  Hua Xia ,  Victor Petrovich Ostroverkhov ,  Xinghua Wang

    IPC分类号： G11B7/00

    CPC分类号： G11B7/28 ,  G11B7/0065 ,  G11B7/24044 ,  G11B7/26

    摘要： Techniques are provided for controlling the reading of optical data from a master disk in a holographic replication system. Imperfections in the master disk or movement of the disk during a recording process may cause source beams to deviate from target data tracks. In some embodiments, a detector system is used to determine the focus and alignment of the source beams on the master disk, as well as the tilt and rotation of the disk with respect to the holographic replication system. The detector system may detect deviations in the intensity distribution of the reflections of the source beams and generate an error signal corresponding to focusing, tracking, tilt, and/or rotational errors. Servo-mechanical devices may actuate optical components to compensate for such errors.

    摘要翻译： 提供了用于控制在全息复制系统中从主盘读取光学数据的技术。 主盘中的缺陷或磁盘在记录过程中的移动可能导致源光束偏离目标数据磁道。 在一些实施例中，检测器系统用于确定源光束在母盘上的聚焦和对准，以及盘相对于全息复制系统的倾斜和旋转。 检测器系统可以检测源波束的反射的强度分布的偏差，并产生对应于聚焦，跟踪，倾斜和/或旋转误差的误差信号。 伺服机械装置可以致动光学部件以补偿这种误差。

    NON-BINARY HOLOGRAMS FOR INCREASED CAPACITY
    2.
    发明申请
    NON-BINARY HOLOGRAMS FOR INCREASED CAPACITY 有权
    增加能力的非二进制HOLOGRAMS

    公开(公告)号：US20120170437A1

    公开(公告)日：2012-07-05

    申请号：US12981279

    申请日：2010-12-29

    申请人： John Erik Hershey ,  Kenneth Brakeley Welles ,  John Anderson Fergus Ross ,  Xiaolei Shi ,  Zhiyuan Ren ,  Victor Petrovich Ostroverkhov

    发明人： John Erik Hershey ,  Kenneth Brakeley Welles ,  John Anderson Fergus Ross ,  Xiaolei Shi ,  Zhiyuan Ren ,  Victor Petrovich Ostroverkhov

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00772 ,  G11B7/24088 ,  G11B2007/00656

    摘要： Techniques are provided for increasing storage capacity in a holographic storage system. While typical holographic storage systems involve binary storage for each data position in a holographic disk, present techniques involve storing data such that more than two data levels may be recorded in each data position. In some embodiments, a recording beam directed to the disk may be adjusted to different power levels depending on the data level to be recorded. Furthermore, the recording time at a data position may be adjusted to increase the energy directed to the data position by increasing the amount of time the recording beam is impinged on the data position. Embodiments are suitable for different types of holographic storage, including dye-based medium.

    摘要翻译： 提供了用于增加全息存储系统中的存储容量的技术。 虽然典型的全息存储系统涉及用于全息盘中的每个数据位置的二进制存储，但是现有技术涉及存储数据，使得可以在每个数据位置记录两个以上的数据级别。 在一些实施例中，根据待记录的数据级别，可以将指向磁盘的记录光束调整到不同的功率电平。 此外，可以调整数据位置处的记录时间，以通过增加记录光束撞击在数据位置上的时间量来增加指向数据位置的能量。 实施例适用于不同类型的全息存储，包括基于染料的介质。

    System and method for precise recording
    3.
    发明授权
    System and method for precise recording 有权
    用于精确记录的系统和方法

    公开(公告)号：US08139462B1

    公开(公告)日：2012-03-20

    申请号：US12953571

    申请日：2010-11-24

    申请人： Zhiyuan Ren ,  Xiaolei Shi ,  Victor Petrovich Ostroverkhov

    发明人： Zhiyuan Ren ,  Xiaolei Shi ,  Victor Petrovich Ostroverkhov

    IPC分类号： G11B7/00

    CPC分类号： G11B7/08511 ,  G11B7/0065 ,  G11B2007/00656

    摘要： A method for calculation of recording depth in a holographic disk is disclosed. The method includes applying a first external voltage to one or more actuators coupled to an objective lens to focus a tracking beam of radiation having a first wavelength on a reference layer of the disk, wherein the reference layer comprises at least one of a partially dichroic coating or a partially metallized coating. The method also includes applying a second external voltage to the one or more actuators coupled to the objective lens to focus a recording beam of radiation on the reference layer of the disk, wherein the recording beam comprises a second wavelength different from the first wavelength of the tracking beam. The method further includes computing a difference between the first external voltage and the second external voltage. The method also includes calculating a lens-shift distance based upon the difference using a voltage-distance calibration curve, wherein the lens-shift distance refers to a shift in distance of the objective lens in order to focus the tracking beam of radiation and the recording beam of radiation on the reference layer respectively. The method also calculates the recording depth based upon the lens-shift distance.

    摘要翻译： 公开了一种用于计算全息光盘中的记录深度的方法。 该方法包括将第一外部电压施加到耦合到物镜的一个或多个致动器，以将具有第一波长的辐射的跟踪光束聚焦在盘的参考层上，其中参考层包括部分二向色涂层 或部分金属化涂层。 该方法还包括对耦合到物镜的一个或多个致动器施加第二外部电压以将记录光束聚焦在盘的参考层上，其中记录光束包括与第一波长不同的第二波长 跟踪光束。 该方法还包括计算第一外部电压和第二外部电压之间的差异。 该方法还包括使用电压 - 距离校准曲线基于差异来计算透镜移动距离，其中透镜移动距离是指物镜的距离偏移以聚焦跟踪光束和记录 参考层上的辐射束。 该方法还根据透镜移动距离计算记录深度。