公开(公告)号：US08345526B2

公开(公告)日：2013-01-01

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。

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：US08233368B2

公开(公告)日：2012-07-31

申请号：US12338828

申请日：2008-12-18

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/131

摘要： The present techniques provide methods and systems for more reliable reading of optical data disks. In embodiments, a multi-pixel detector that is segmented into multiple areas, or detector segments, may be used to detect a pattern in the light reflected from an optical data disk. The pattern may include light scattered from a single bit that may be under a center detector, as well as light scattered from proximate bits. The detector system may then combine the quantized values from each of the detector segments mathematically to determine the presence or absence of a bit or bits of data. The mathematical combination may also use data that is known about the status of adjacent data bits (such as previously read bits, or bit patterns which are allowed or not allowed by specific data encoding schemes) to improve the accuracy of the bit prediction.

摘要翻译： 本技术提供了用于更可靠地读取光学数据盘的方法和系统。 在实施例中，分割成多个区域或检测器段的多像素检测器可用于检测从光学数据盘反射的光中的图案。 图案可以包括从可能在中心检测器下方的单个位散射的光以及从近似位散射的光。 然后，检测器系统可以在数学上组合来自每个检测器段的量化值以确定数据的位或位的存在或不存在。 数学组合还可以使用已知关于相邻数据位（例如先前读取的位或被特定数据编码方案允许或不允许的位模式）的状态来提高比特预测的精度的数据。

公开(公告)号：US20120170432A1

公开(公告)日：2012-07-05

申请号：US12981270

申请日：2010-12-29

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/0065 ,  G11B7/24038

摘要： Techniques are provided for controlling the reading of micro-holograms from a holographic disk based on a target data layer to be read in the disk. Reading a target data layer which is relatively deeper in the disk (e.g., farther from an optical head emitting a reading beam) may involve using a higher power reading beam to compensate for power attenuation of the returned reading beam. For example, a power adjustment module may be used to dynamically adjust a reading laser emitting the reading beam, based on the dynamically changing target data layer. By compensating for power attenuation in deeper target data layers, the variance of power in the returned reading beams may be decreased, possibly improving the bit error rate in micro-hologram reading techniques.

摘要翻译： 提供技术用于基于要在盘中读取的目标数据层来控制来自全息盘的微全息图的读取。 读取在盘中相对较深的目标数据层（例如，从发出读取光束的光学头越远）可以涉及使用更高功率的读取光束来补偿返回的读取光束的功率衰减。 例如，功率调整模块可以用于基于动态改变的目标数据层来动态地调整发射读取光束的读取激光器。 通过补偿较深的目标数据层中的功率衰减，返回的读取光束中的功率变化可能会降低，可能会改善微全息图读取技术中的误码率。

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：US07794896B2

公开(公告)日：2010-09-14

申请号：US11636856

申请日：2006-12-11

申请人： Christoph Georg Erben ,  Eugene Pauling Boden ,  Kathryn Lynn Longley ,  Brian Lee Lawrence ,  Xiaolei Shi

发明人： Christoph Georg Erben ,  Eugene Pauling Boden ,  Kathryn Lynn Longley ,  Brian Lee Lawrence ,  Xiaolei Shi

IPC分类号： G03H1/02

CPC分类号： G11B7/253 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/24038 ,  G11B7/24044 ,  G11B7/245 ,  G11B7/246 ,  Y10S430/146

摘要： A method of making a holographic data storage medium is provided. The method comprises: (a) providing an optically transparent substrate comprising at least one photochemically active dye; and (b) irradiating the optically transparent substrate at least one wavelength at which the optically transparent substrate has an absorbance in a range from about 0.1 to 1, to produce a modified optically transparent substrate comprising at least one optically readable datum and at least one photo-product of the photochemically active dye. The at least one wavelength is in a range from about 300 nanometers to about 800 nanometers. The optically transparent substrate is at least 100 micrometers thick, and comprises the photochemically active dye in an amount corresponding to from about 0.1 to about 10 weight percent based on a total weight of the optically transparent substrate.

摘要翻译： 提供了制作全息数据存储介质的方法。 该方法包括：（a）提供包含至少一种光化学活性染料的光学透明基材; 和（b）将所述光学透明基底的至少一个波长照射到所述光学透明基底具有在约0.1至1范围内的吸光度，以产生包含至少一个光学可读数据和至少一张照片的修改的光学透明基底 - 光化学活性染料的产品。 至少一个波长在约300纳米至约800纳米的范围内。 所述光学透明基材的厚度至少为100微米，并且所述光学活性染料的含量相当于所述光学透明基材的总重量的约0.1至约10重量％。

公开(公告)号：US20080158627A1

公开(公告)日：2008-07-03

申请号：US11901725

申请日：2007-09-18

申请人： Brian Lee Lawrence ,  Marc Dubois ,  Eugene Pauling Boden ,  William David Richards ,  Patrick Joseph McCloskey ,  Azar Alizadeh ,  Xiaolei Shi

发明人： Brian Lee Lawrence ,  Marc Dubois ,  Eugene Pauling Boden ,  William David Richards ,  Patrick Joseph McCloskey ,  Azar Alizadeh ,  Xiaolei Shi

IPC分类号： G03H1/02

CPC分类号： G03H1/02 ,  G03H1/30 ,  G03H2001/0264 ,  G03H2001/0417 ,  G03H2222/54 ,  G03H2260/12 ,  G03H2270/53 ,  G11B7/0065 ,  G11B7/24044 ,  G11B7/245 ,  G11B7/246 ,  G11B7/248 ,  G11B20/10 ,  G11B2220/2504

摘要： A method for storing holographic data, said method comprising: step (A) providing an optically transparent substrate comprising a polymer composition and a light absorbing chromophore, said polymer composition comprising a continuous phase and a dispersed phase, said dispersed phase being less than about 200 nm in size; and step (B) irradiating a volume element of the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to cause a phase change in at least a portion of the dispersed phase within the volume element of the substrate to produce within the irradiated volume element refractive index variations corresponding to the holographic interference pattern, thereby producing an optically readable datum corresponding to the volume element.

摘要翻译： 一种用于存储全息数据的方法，所述方法包括：步骤（A）提供包括聚合物组合物和光吸收发色团的光学透明基底，所述聚合物组合物包含连续相和分散相，所述分散相小于约200 nm尺寸; 并且步骤（B）用全息干涉图案照射光学透明基底的体积元件，其中所述图案具有第一波长和强度，其足以引起体积元件内的至少一部分分散相的相变 以在与所述全息干涉图案相对应的所述照射的体积元素折射率变化中产生，从而产生与所述体积元素对应的光学可读数据。

公开(公告)号：US20080144145A1

公开(公告)日：2008-06-19

申请号：US11638911

申请日：2006-12-14

申请人： Eugene Pauling Boden ,  Brian Lee Lawrence ,  Xiaolei Shi

发明人： Eugene Pauling Boden ,  Brian Lee Lawrence ,  Xiaolei Shi

IPC分类号： G03H1/02

CPC分类号： G03H1/02 ,  G03H2001/026 ,  G03H2001/0264 ,  G11B7/24044 ,  G11B7/245 ,  G11B2007/24612

摘要： Methods for storing holographic data are presented. The method includes providing an optically transparent substrate comprising a thermally active photochemically active polymer composition, the polymer composition including a photochemically active dye and a heat generating chromophore, thermally activating at least a part of a volume element of the optically transparent substrate to increase a quantum efficiency of photochemical conversion of the photochemically active dye into a photo-product, within the at least a part of the volume element and converting at least some of the photochemically active dye to a photo-product, and producing concentration variations of the photo-product within the volume element of the optically transparent substrate, thereby producing an optically readable datum corresponding to the volume element.

摘要翻译： 提出了存储全息数据的方法。 该方法包括提供包含热活性光化学活性聚合物组合物的光学透明基质，所述聚合物组合物包含光化学活性染料和发热发色团，热激活光学透明基底的体积元素的至少一部分以增加量子 将光化学活性染料光化学转化成体积元素的至少一部分内的光产物的效率，并将至少一些光化学活性染料转化成光产物，并产生光产物的浓度变化 在光学透明基板的体积元件内，从而产生与体积元件对应的光学可读数据。