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.
    发明授权
    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
    使用反馈误差和/或前馈信号来调整控制轴到全息数据存储系统或设备中的全息图的最佳恢复位置

    公开(公告)号:US08446808B2

    公开(公告)日:2013-05-21

    申请号:US12351047

    申请日:2009-01-09

    IPC分类号: 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.
    发明授权
    Sensing absolute position of an encoded object 有权
    感测编码对象的绝对位置

    公开(公告)号:US07638755B2

    公开(公告)日:2009-12-29

    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。

    Method for holographic data retrieval by quadrature homodyne detection
    4.
    发明授权
    Method for holographic data retrieval by quadrature homodyne detection 有权
    通过正交零差检测的全息数据检索方法

    公开(公告)号:US08233205B2

    公开(公告)日:2012-07-31

    申请号:US12576257

    申请日:2009-10-09

    申请人: Mark R. Ayres

    发明人: Mark R. Ayres

    摘要: A holographic device is provided for recovering data in a holographic memory system. The device use homodyne detection to introduce a local oscillator beam into a reconstructed data beam of the recovered hologram. An image of the combined beam comprising the reconstructed data beam and local oscillator beam may be processed to obtain contrast level information for the pixels of the detected image. This contrast level information may then be used to obtain an increased contrast image of the recovered hologram, which may increase the signal to noise ratio (SNR) of the recovered data.

    摘要翻译: 提供全息设备用于在全息存储系统中恢复数据。 该设备使用零差检测将本地振荡器波束引入到恢复的全息图的重构数据波束中。 可以处理包括重构数据波束和本地振荡器波束的组合波束的图像,以获得检测图像的像素的对比度信息。 然后可以使用该对比度水平信息来获得恢复的全息图的增加的对比度图像,其可以增加恢复的数据的信噪比(SNR)。

    Sensing absolute position of an encoded object
    5.
    发明授权
    Sensing absolute position of an encoded object 有权
    感测编码对象的绝对位置

    公开(公告)号:US07675025B2

    公开(公告)日:2010-03-09

    申请号:US11440372

    申请日:2006-05-25

    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。

    Method and system for equalizing holographic data pages
    7.
    发明授权
    Method and system for equalizing holographic data pages 有权
    用于均衡全息数据页的方法和系统

    公开(公告)号:US08275216B2

    公开(公告)日:2012-09-25

    申请号:US10879847

    申请日:2004-06-28

    IPC分类号: G06K9/32

    CPC分类号: G11B7/0065

    摘要: Methods and systems for equalizing a holographic image page and for compensating nonlinearity of a holographic data storage channel are disclosed. In one embodiment, a method for equalizing a holographic image page includes receiving the holographic image page and dividing the holographic image page into a plurality of local image regions. The method further includes generating a local alignment error vector for each local image region, computing a local finite impulse response kernel for each local image region according to the corresponding local alignment error vector, and adjusting misaligned pixels of each local image region using the corresponding local finite impulse response kernel.

    摘要翻译: 公开了用于均衡全息图像页面和用于补偿全息数据存储通道的非线性的方法和系统。 在一个实施例中,用于均衡全息图像页的方法包括接收全息图像页面并将全息图像页划分为多个局部图像区域。 该方法还包括为每个局部图像区域生成局部对准误差向量,根据相应的局部对准误差向量计算每个局部图像区域的局部有限脉冲响应内核,并使用相应的局部位置调整每个局部图像区域的不对准像素 有限脉冲响应内核。

    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
    8.
    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。

    Process for holographic multiplexing
    9.
    发明授权
    Process for holographic multiplexing 有权
    全息复用方法

    公开(公告)号:US06798547B2

    公开(公告)日:2004-09-28

    申请号:US10201357

    申请日:2002-07-22

    IPC分类号: G03H110

    摘要: A method of recording holograms includes: generating a first signal-beam from a signal-beam source and a first reference beam from a reference-beam source; recording a first hologram in a holographic medium from an interference between the first signal beam and the first reference beam; shifting the reference-beam source after the act of recording the first hologram; generating a second signal beam from the signal-beam source and a second reference beam from the reference-beam source after the act of shifting the reference-beam source following the recording of the first hologram; and recording a second hologram in the holographic medium from an interference between the second signal beam and the second reference beam.

    摘要翻译: 记录全息图的方法包括:从信号束源产生第一信号光束和从参考光束源产生第一参考光束; 从第一信号光束和第一参考光束之间的干涉记录全息图中的第一全息图; 在记录第一全息图的动作之后移动参考光束源; 在记录第一全息图之后移动参考光束源的动作之后,从信号光束源产生第二信号光束和来自参考光束源的第二参考光束; 以及从所述第二信号光束和所述第二参考光束之间的干涉在全息介质中记录第二全息图。

    Method for formatting partially overlapping holograms
    10.
    发明授权
    Method for formatting partially overlapping holograms 有权
    格式化部分重叠全息图的方法

    公开(公告)号:US06735002B2

    公开(公告)日:2004-05-11

    申请号:US10215860

    申请日:2002-08-09

    申请人: Mark R. Ayres

    发明人: Mark R. Ayres

    IPC分类号: G03H130

    CPC分类号: G03H1/26

    摘要: A method of writing holograms includes: numbering sections in sequence, where each section has a spatial projection onto a holographic medium; and writing at least one hologram in each of the sections in sequence. Writing in two sections with adjacent spatial projections provides a substantially uniform exposure level for a sequentially subsequent section with a spatial projection that overlaps the two sections.

    摘要翻译: 一种写全息图的方法包括:序列中的编号部分,其中每个部分在全息介质上具有空间投影; 并依次写入每个部分中的至少一个全息图。 在具有相邻空间投影的两个部分中写入为具有与两个部分重叠的空间投影的顺序后续部分提供基本均匀的曝光水平。