USE OF FEEDBACK ERROR AND/OR FEED-FORWARD SIGNALS TO ADJUST CONTROL AXES TO OPTIMAL RECOVERY POSITION OF HOLOGRAM IN HOLOGRAPHIC DATA STORAGE SYSTEM OR DEVICE
    1.
    发明申请
    USE OF FEEDBACK ERROR AND/OR FEED-FORWARD SIGNALS TO ADJUST CONTROL AXES TO OPTIMAL RECOVERY POSITION OF HOLOGRAM IN HOLOGRAPHIC DATA STORAGE SYSTEM OR DEVICE 有权
    使用反馈错误和/或进给信号调整控制线,以便在全息数据存储系统或器件中进行全息恢复位置

    公开(公告)号:US20090207710A1

    公开(公告)日:2009-08-20

    申请号:US12351047

    申请日:2009-01-09

    IPC分类号: G11B11/00 G11B7/00

    CPC分类号: G11B7/0065 G11B7/083

    摘要: A method for adjusting at least one alignment control axis of a holographic data storage system or device to or towards a sufficiently optimal recovery position for recovery of a hologram based on a derived feedback error signal and/or a derived feed-forward signal. For the next hologram in the sequence, the derived feedback error signal estimates the direction and magnitude of misalignment of the at least one alignment control axis for one or more previously recovered holograms based on alignment-indicating data. The derived feed-forward signal estimates an optimal alignment value for the at least one alignment control axis for one or more holograms based on recording and recovery operating condition data for the holograms. An iterative alignment procedure may also be used to derive a feedback error signal for one hologram.

    摘要翻译: 一种用于根据导出的反馈误差信号和/或导出的前馈信号将全息数据存储系统或装置的至少一个对准控制轴调整到或朝向足够最佳恢复位置的方法,用于恢复全息图。 对于序列中的下一个全息图,导出的反馈误差信号基于对准指示数据估计一个或多个先前恢复的全息图的至少一个对准控制轴的未对准的方向和大小。 导出的前馈信号基于用于全息图的记录和恢复操作条件数据估计用于一个或多个全息图的至少一个对准控制轴的最佳对准值。 也可以使用迭代对准过程来导出一个全息图的反馈误差信号。

    SENSING ABSOLUTE POSITION OF AN ENCODED OBJECT
    2.
    发明申请
    SENSING ABSOLUTE POSITION OF AN ENCODED OBJECT 有权
    感知编码对象的绝对位置

    公开(公告)号:US20080203282A1

    公开(公告)日:2008-08-28

    申请号:US12113516

    申请日:2008-05-01

    IPC分类号: G01D5/34

    摘要: In one aspect of the present invention, a device for sensing an absolute position of an encoded object, comprising: a position tracking module comprising: a track illumination module configured to illuminate the encoded object with one more light beams, and to detect one or more light beams resulting from said illumination of said encoded object; and an absolute position determinator configured to determine the absolute position of the encoded object based on said one or more light beams resulting from said illumination of said encoded object.

    摘要翻译: 在本发明的一个方面,一种用于感测编码对象的绝对位置的装置,包括:位置跟踪模块,包括:轨道照明模块,配置成用一个或多个光束照射编码对象,并且检测一个或多个 由所述编码对象的所述照明产生的光束; 以及绝对位置确定器,被配置为基于由所述编码对象的所述照明产生的所述一个或多个光束来确定编码对象的绝对位置。