公开(公告)号：US08553515B2

公开(公告)日：2013-10-08

申请号：US12957179

申请日：2010-11-30

申请人： Zhiyuan Ren ,  Xiaolei Shi ,  Xuefeng Wang

发明人： Zhiyuan Ren ,  Xiaolei Shi ,  Xuefeng Wang

IPC分类号： G11B7/0065 ,  G11B7/1353 ,  G11B7/126 ,  G11B19/12 ,  G11B20/18

CPC分类号： G11B7/0938 ,  G11B7/083 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/24044 ,  G11B7/2405 ,  G11B2007/0009

摘要： A method for servoing when reading out a recorded holographic disk or recording in a preformatted disk includes detecting a primary signal of a reflected primary beam from a target data track of a target data layer of the disk, wherein the primary beam of radiation has a first wavelength; comparing a power measurement of the primary signal with a threshold value of power; detecting a tracking signal of a reflected tracking beam from a reference layer of the disk in an event that the power measurement of the primary signal is below the threshold value, wherein the tracking beam of radiation has a second wavelength; generating a servo error signal based upon the primary signal or the tracking signal; actuating an optical sub-system based upon either of the primary servo error signal or the tracking servo error signal such that the primary beam focuses on the target data layer.

摘要翻译： 当读出记录的全息盘或在预先格式化的盘中记录时的伺服方法包括：检测来自盘的目标数据层的目标数据轨迹的反射主光束的主信号，其中主辐射束具有第一 波长; 将主信号的​​功率测量与功率的阈值进行比较; 在所述主信号的功率测量低于所述阈值的情况下，检测来自所述盘的参考层的反射跟踪光束的跟踪信号，其中所述跟踪光束具有第二波长; 基于主信号或跟踪信号产生伺服误差信号; 基于主伺服误差信号或跟踪伺服误差信号中的任何一个致动光学子系统，使得主光束聚焦在目标数据层上。

公开(公告)号：US08315139B2

公开(公告)日：2012-11-20

申请号：US12981293

申请日：2010-12-29

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G11B7/08523 ,  G11B7/0956 ,  G11B2007/00656

摘要： Methods and systems are provided for recording micro-holograms in a holographic disk. Disk tilting or disk imperfections may cause counter-propagating recording and reference beams to deviate from the target data position in the disk. In some embodiments, a tracking beam is directed to a tracking position in the disk, and deviation of the tracking beam from the tracking position may indicate tracking and/or focusing errors of the recording and/or reference beams. A detector may generate an error signal in response to such errors. A first servo-mechanical system may actuate a first optical head (e.g., transmitting the reference and tracking beams) to compensate for such errors, and a second servo-mechanical system may actuate a second optical head (e.g., transmitting the recording beam) to follow the actuation of the first servo system, such that an interference of the reference beam and the recording beam may be maintained in the target data position.

摘要翻译： 提供了用于在全息盘中记录微全息图的方法和系统。 磁盘倾斜或磁盘缺陷可能导致反向传播的记录和参考光束偏离磁盘中的目标数据位置。 在一些实施例中，跟踪光束被引导到盘中的跟踪位置，并且跟踪光束与跟踪位置的偏差可以指示记录和/或参考光束的跟踪和/或聚焦误差。 检测器可以响应于这种错误而产生误差信号。 第一伺服机械系统可以致动第一光学头（例如，传输参考和跟踪光束）以补偿这样的误差，并且第二伺服机械系统可以致动第二光学头（例如，传送记录光束）到 遵循第一伺服系统的致动，使得参考光束和记录光束的干涉可以保持在目标数据位置。

公开(公告)号：US20120134251A1

公开(公告)日：2012-05-31

申请号：US12957179

申请日：2010-11-30

申请人： Zhiyuan Ren ,  Xiaolei Shi ,  Xuefeng Wang

发明人： Zhiyuan Ren ,  Xiaolei Shi ,  Xuefeng Wang

IPC分类号： G11B7/0037

CPC分类号： G11B7/0938 ,  G11B7/083 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/24044 ,  G11B7/2405 ,  G11B2007/0009

摘要： A method for servoing when reading out a recorded holographic disk or recording in a preformatted holographic disk is disclosed. The method includes detecting a primary signal of a reflected primary beam from a target data track of a target data layer of the holographic disk, wherein the primary beam of radiation has a first wavelength. The method also includes comparing a power measurement of the primary signal with a threshold value of power. The method also includes detecting a tracking signal of a reflected tracking beam from a reference layer of the holographic disk in an event that the power measurement of the primary signal is below the threshold value of power, wherein the tracking beam of radiation has a second wavelength. The method also includes generating a servo error signal based upon the primary signal or the tracking signal. The method further includes actuating an optical sub-system based upon either of the primary servo error signal or the tracking servo error signal such that the primary beam focuses on the target data layer.

摘要翻译： 公开了一种在读出记录的全息光盘时进行伺服或在预格式化的全息光盘中进行记录的方法。 该方法包括从全息光盘的目标数据层的目标数据轨迹检测反射的主光束的主信号，其中主辐射束具有第一波长。 该方法还包括将主信号的​​功率测量与功率的阈值进行比较。 该方法还包括在主信号的功率测量低于功率阈值的情况下，检测来自全息盘的参考层的反射跟踪光束的跟踪信号，其中，所述跟踪光束具有第二波长 。 该方法还包括基于主信号或跟踪信号产生伺服误差信号。 该方法还包括基于主要伺服误差信号或跟踪伺服误差信号中的任何一个致动光学子系统，使得主波束聚焦在目标数据层上。

公开(公告)号：US20120092980A1

公开(公告)日：2012-04-19

申请号：US12907824

申请日：2010-10-19

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

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

IPC分类号： G11B7/00 ,  G11B7/26

CPC分类号： G11B7/083 ,  G11B7/28

摘要： The present techniques provide methods and systems for recording micro-holograms on a holographic disk using a plurality of counter-propagating light beams in parallel. The parallel counter-propagating light beams overlap to form interference patterns on a data layer and over multiple data tracks in the holographic disk. Rotating the disk enables the parallel recording of micro-holograms over multiple data tracks, thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram. In some embodiments, data in the parallel signal beams may be retrieved from a master holographic disk or may be modulated into the parallel signal beams.

摘要翻译： 本技术提供了使用并行的多个反向传播光束在全息光盘上记录微全息图的方法和系统。 平行的反向传播光束重叠以在数据层上和全息光盘中的多个数据轨道上形成干涉图案。 旋转磁盘能够在多个数据磁道上并行记录微全息图，从而减少记录时间。 此外，照明图案可以包括照明点和非照明区域，使得每个照明点可以覆盖数据层平面的相对小部分，可能控制记录的微全息图的深度扩展。 在一些实施例中，并行信号光束中的数据可以从主全息光盘检索，或者可以被调制成并行信号光束。

公开(公告)号：US08154975B1

公开(公告)日：2012-04-10

申请号：US12949621

申请日：2010-11-18

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

发明人： Xuefeng 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： G11B7/14 ,  G11B7/00781 ,  G11B7/083

摘要： The present techniques provide methods and systems for controlling the recording of micro-holograms using multiple counter-propagating light beams over multiple data tracks of a holographic disk. Imperfections in a holographic disk or movement of the disk during a recording process may cause signal beams to deviate from target data tracks. In some embodiments, a tracking beam is directed to a reference layer in the disk. Deviation of the reference beam from a target groove in the reference layer may be indicative of tracking errors. A detector may detect reflections of the tracking beam and generate an error signal in response to detected tracking errors. Servo-mechanical devices may actuate (e.g., radially, tangentially, or axially translate, rotate, and/or tilt) one or more optical components through which the counter-propagating light beams are emitted to compensate for tracking errors.

摘要翻译： 本技术提供了使用在全息盘的多个数据轨道上使用多个反向传播光束来控制微全息图的记录的方法和系统。 在记录过程中，全息盘中的缺陷或磁盘的运动可能导致信号光束偏离目标数据磁道。 在一些实施例中，跟踪光束被引导到盘中的参考层。 参考光束与参考层中目标凹槽的偏差可能表示跟踪误差。 检测器可以检测跟踪光束的反射并且响应于检测到的跟踪误差而产生误差信号。 伺服机械装置可以致动（例如，径向，切向或轴向平移，旋转和/或倾斜）一个或多个光学部件，通过该光学部件发射反向传播的光束以补偿跟踪误差。

公开(公告)号：US09478245B2

公开(公告)日：2016-10-25

申请号：US12907824

申请日：2010-10-19

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

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

IPC分类号： G11B7/08 ,  G11B7/28

CPC分类号： G11B7/083 ,  G11B7/28

摘要： The present techniques provide methods and systems for recording micro-holograms on a holographic disk using a plurality of counter-propagating light beams in parallel. The parallel counter-propagating light beams overlap to form interference patterns on a data layer and over multiple data tracks in the holographic disk. Rotating the disk enables the parallel recording of micro-holograms over multiple data tracks, thus reducing recording time. Further, the illumination pattern may include illuminated spots and non-illuminated regions, such that each illumination spot may cover a relatively small fraction of the data layer plane, possibly controlling the depth spread of the recorded micro-hologram. In some embodiments, data in the parallel signal beams may be retrieved from a master holographic disk or may be modulated into the parallel signal beams.

摘要翻译： 本技术提供了使用并行的多个反向传播光束在全息光盘上记录微全息图的方法和系统。 平行的反向传播光束重叠以在数据层上和全息光盘中的多个数据轨道上形成干涉图案。 旋转磁盘能够在多个数据磁道上并行记录微全息图，从而减少记录时间。 此外，照明图案可以包括照明点和非照明区域，使得每个照明点可以覆盖数据层平面的相对小部分，可能控制记录的微全息图的深度扩展。 在一些实施例中，并行信号光束中的数据可以从主全息光盘检索，或者可以被调制成并行信号光束。

公开(公告)号：US20120170438A1

公开(公告)日：2012-07-05

申请号：US12981293

申请日：2010-12-29

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/083 ,  G11B7/08523 ,  G11B7/0956 ,  G11B2007/00656

摘要： Methods and systems are provided for recording micro-holograms in a holographic disk. Disk tilting or disk imperfections may cause counter-propagating recording and reference beams to deviate from the target data position in the disk. In some embodiments, a tracking beam is directed to a tracking position in the disk, and deviation of the tracking beam from the tracking position may indicate tracking and/or focusing errors of the recording and/or reference beams. A detector may generate an error signal in response to such errors. A first servo-mechanical system may actuate a first optical head (e.g., transmitting the reference and tracking beams) to compensate for such errors, and a second servo-mechanical system may actuate a second optical head (e.g., transmitting the recording beam) to follow the actuation of the first servo system, such that an interference of the reference beam and the recording beam may be maintained in the target data position.

摘要翻译： 提供了用于在全息盘中记录微全息图的方法和系统。 磁盘倾斜或磁盘缺陷可能导致反向传播的记录和参考光束偏离磁盘中的目标数据位置。 在一些实施例中，跟踪光束被引导到盘中的跟踪位置，并且跟踪光束与跟踪位置的偏差可以指示记录和/或参考光束的跟踪和/或聚焦误差。 检测器可以响应于这种错误而产生误差信号。 第一伺服机械系统可以致动第一光学头（例如，传输参考和跟踪光束）以补偿这样的误差，并且第二伺服机械系统可以致动第二光学头（例如，传送记录光束）到 遵循第一伺服系统的致动，使得参考光束和记录光束的干涉可以保持在目标数据位置。

公开(公告)号：US20120127843A1

公开(公告)日：2012-05-24

申请号：US12949628

申请日：2010-11-18

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

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

IPC分类号： G11B27/36 ,  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。

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。

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。