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    Transmitted reference spread spectrum communications system
    51.
    发明授权
    Transmitted reference spread spectrum communications system 失效
    传输参考扩频通信系统

    公开(公告)号：US5761238A

    公开(公告)日：1998-06-02

    申请号：US676013

    申请日：1996-07-05

    申请人： John Anderson Fergus Ross ,  Irfan Ali ,  John Erik Hershey ,  Stephen Michael Hladik ,  Gary Jude Saulnier ,  Michael Paul Weir

    发明人： John Anderson Fergus Ross ,  Irfan Ali ,  John Erik Hershey ,  Stephen Michael Hladik ,  Gary Jude Saulnier ,  Michael Paul Weir

    IPC分类号： H04B1/707 ,  H04B7/26 ,  H04B1/69

    CPC分类号： H04B1/707

    摘要： A low complexity and low cost transmitted reference spread spectrum communications system provides several methods of generating a suitable wideband carrier, a method for combining the wideband carrier with a narrowband modulated wideband carrier, and a number of implementations of a simple, inexpensive receiver for the transmitted reference communications system. The transmitter includes a balanced modulator for modulating a wideband spreading signal with a narrowband message signal to generate a wideband carrier. A signal combiner combines the wideband carrier with a narrowband modulated wideband carrier to generate a transmitted reference spread spectrum signal. The receiver includes a selectable time delay device having a plurality of taps for receiving a detected received signal from the transmitter. A tap selector selects a delayed signal from the selectable time delay device. A mixer combines output signals of the selectable time delay device and the tap selector, and a leaky integrator receives the mixer output signal and controls the tap selector. The leaky detector generates the narrowband message signal.

    摘要翻译： 低复杂度和低成本传输的参考扩频通信系统提供了几种产生合适的宽带载波的方法，一种用于将宽带载波与窄带调制宽带载波组合的方法，以及用于传输的简单，便宜的接收机的多种实施方式 参考通信系统。 发射机包括用于利用窄带消息信号调制宽带扩频信号以产生宽带载波的平衡调制器。 信号组合器将宽带载波与窄带调制宽带载波组合以产生发射的参考扩展频谱信号。 接收机包括具有多个抽头的可选择的时间延迟装置，用于从发射机接收检测到的接收信号。 分接选择器选择来自可选时延装置的延迟信号。 混频器组合可选时延装置的输出信号和分接选择器，泄漏积分器接收混频器输出信号并控制分接选择器。 泄漏检测器产生窄带消息信号。

    Non-binary holograms for increased capacity
    52.
    发明授权
    Non-binary holograms for increased capacity 有权
    用于增加容量的非二进制全息图

    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。

    System and method for storage of data in circular data tracks on optical discs
    53.
    发明授权
    System and method for storage of data in circular data tracks on optical discs 有权
    用于在光盘上的圆形数据轨道中存储数据的系统和方法

    公开(公告)号：US08331210B2

    公开(公告)日：2012-12-11

    申请号：US12342794

    申请日：2008-12-23

    申请人： John Anderson Fergus Ross ,  Kenneth Brakeley Welles ,  John Erik Hershey ,  Nick Andrew Van Stralen ,  Victor Petrovich Ostroverkhov

    发明人： John Anderson Fergus Ross ,  Kenneth Brakeley Welles ,  John Erik Hershey ,  Nick Andrew Van Stralen ,  Victor Petrovich Ostroverkhov

    IPC分类号： G11B7/00

    CPC分类号： G11B7/005 ,  G11B20/10009 ,  G11B20/10287 ,  G11B20/10296 ,  G11B20/1803 ,  G11B20/1833 ,  G11B2020/183 ,  G11B2220/2537

    摘要： The present techniques provide methods and systems for reading and processing a data signal read from an optical data disc. In embodiments, an optical reader system may read data bits from a data ring in the disc. The data rings may be concentric, and a beginning of a sequence of data on the data ring may be in substantially the same position as an ending of the sequence. The reader may identify a data ring and begin the read process on the targeted data ring, and may end the read process when the reader reaches the starting point. The data sequence read from the data ring may be decoded to form a bit stream, which may be provided to various output devices. A circular trellis formed from the bit stream may enable the reading of a targeted data sequence without additional tail bits to improve data transmission efficiency.

    摘要翻译： 本技术提供了用于读取和处理从光学数据盘读取的数据信号的方法和系统。 在实施例中，光学读取器系统可以从盘中的数据环读取数据位。 数据环可以是同心的，并且数据环上的数据序列的开始可以与序列的结尾基本上在相同的位置。 读取器可以识别数据环并且在目标数据环上开始读取过程，并且当读取器到达起始点时可以结束读取过程。 可以对从数据环读取的数据序列进行解码以形成可被提供给各种输出设备的比特流。 从比特流形成的圆形网格可以使得能够读取目标数据序列而不需要额外的尾比特来提高数据传输效率。

    Method and system for bit prediction using a multi-pixel detector
    54.
    发明授权
    Method and system for bit prediction using a multi-pixel detector 有权
    使用多像素检测器进行位预测的方法和系统

    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。

    METHOD AND SYSTEM FOR PROCESSING INFORMATION FROM OPTICAL DISK LAYERS
    55.
    发明申请
    METHOD AND SYSTEM FOR PROCESSING INFORMATION FROM OPTICAL DISK LAYERS 有权
    从光盘层处理信息的方法和系统

    公开(公告)号：US20120026855A1

    公开(公告)日：2012-02-02

    申请号：US12846085

    申请日：2010-07-29

    申请人： Xiaohong Li ,  Xuefeng Wang ,  Zhiyuan Ren ,  John Erik Hershey ,  John Anderson Fergus Ross

    发明人： Xiaohong Li ,  Xuefeng Wang ,  Zhiyuan Ren ,  John Erik Hershey ,  John Anderson Fergus Ross

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0065

    摘要： A method for processing information is provided. The method includes directing a laser beam to a first track of a first layer of a holographic storage medium. The method also includes recording a base voltage based on a look-up table. The method includes directing the laser beam to a target track in the first layer, based on position information in tracks. Further, the method includes recording an offset voltage for the target track into the look-up table. Still further, the method includes directing the laser beam to a target layer based on position information in vertical wobbles. The method also includes recording an offset voltage for the target layer into the look-up table. Finally, the method includes determining a final voltage based on the look-up table and applying the final voltage to an actuator for moving the laser beam to a final target position in the holographic storage medium for recording and retrieval of information.

    摘要翻译： 提供了一种处理信息的方法。 该方法包括将激光束引导到全息存储介质的第一层的第一轨道。 该方法还包括基于查找表记录基本电压。 该方法包括基于轨道中的位置信息将激光束引导到第一层中的目标轨道。 此外，该方法包括将目标轨迹的偏移电压记录到查找表中。 此外，该方法包括基于垂直摆动中的位置信息将激光束引导到目标层。 该方法还包括将目标层的偏移电压记录到查找表中。 最后，该方法包括基于查找表确定最终电压，并将最终电压施加到用于将激光束移动到全息存储介质中的最终目标位置的致动器，用于记录和检索信息。

    General frame-based compression method
    59.
    发明授权
    General frame-based compression method 失效
    一般基于帧的压缩方法

    公开(公告)号：US6154155A

    公开(公告)日：2000-11-28

    申请号：US263579

    申请日：1999-03-08

    申请人： John Erik Hershey ,  Namita Joshi ,  Mark Lewis Grabb ,  John Anderson Fergus Ross ,  Thomas Gerard Nowak ,  Vincent Paul Staudinger

    发明人： John Erik Hershey ,  Namita Joshi ,  Mark Lewis Grabb ,  John Anderson Fergus Ross ,  Thomas Gerard Nowak ,  Vincent Paul Staudinger

    IPC分类号： H03M7/30 ,  H03M7/40 ,  H03M7/46

    CPC分类号： H03M7/46 ,  H03M7/30 ,  H03M7/40

    摘要： A method of coding and compressing telemetry data makes use of the fact that the telemetry frames are typically highly correlated at a distance, .delta., corresponding to commutation or data periodicities. The existence of such periodicity is used to render a portion of each frame to zeros. The next steps are to search for and remove correlations between the bits in a set of frames, denoted {F.sub.i *}. The compression algorithm implementing the method according to the invention has four sub-steps; Data preconditioning, Compression and coding of first frame, F.sub.1, Compression and coding of frames 2-.delta., F.sub.1 -F.sub..delta., and Compression and coding of F.sub..delta.+1 and on, the steady-state mode.

    摘要翻译： 一种编码和压缩遥测数据的方法利用遥测帧通常在与换向或数据周期性相对应的距离，delta处高度相关的事实。 这种周期性的存在被用于将每个帧的一部分渲染为零。 接下来的步骤是搜索和删除一组帧中的比特之间的相关性，表示为{Fi *}。 实现本发明方法的压缩算法具有四个子步骤： 数据预处理，第一帧的压缩和编码，F1，帧的压缩和编码2- delta，F1-F delta，以及F delta +1的压缩和编码，以及稳态模式。