READ POWER CONTROL
    23.
    发明申请
    READ POWER CONTROL 审中-公开
    读功率控制

    公开(公告)号:US20120170432A1

    公开(公告)日:2012-07-05

    申请号:US12981270

    申请日:2010-12-29

    IPC分类号: G11B7/00

    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。

    Method and system for modulation coding and synchronization
    24.
    发明授权
    Method and system for modulation coding and synchronization 有权
    用于调制编码和同步的方法和系统

    公开(公告)号:US08089846B2

    公开(公告)日:2012-01-03

    申请号:US12336399

    申请日:2008-12-16

    IPC分类号: G11B7/00

    摘要: The present techniques provide systems and methods for modulation coding of data on optical disks, such as holographic data disks, and techniques for reading that data back from the disks. The techniques involve parsing a bit stream into a sequence of individual bit-patterns, and then using the individual bit patterns to select a symbol, or matrix, from a lookup table of previously selected matrices. The symbols are selected according to predetermined criteria that may help make the disk more resistant to interferences and errors, such as surface scratches, and the like. For example, criteria that may be used to select the symbols are the number of reflective and non-reflective regions within each matrix, and the number of sequential reflective regions, among others. The symbols may be written to the disk in a two-dimensional fashion, e.g., across adjacent tracks, or in a three-dimensional fashion, e.g., across adjacent data layers.

    摘要翻译: 本技术提供了用于光盘上的数据的调制编码的系统和方法,例如全息数据盘,以及从盘读出数据的技术。 这些技术涉及将比特流解析为单个比特模式的序列,然后使用各个比特模式从先前选择的矩阵的查找表中选择符号或矩阵。 根据预定标准来选择符号,其可以帮助磁盘更好地抵抗诸如表面划痕等的干扰和错误。 例如,可以用于选择符号的标准是每个矩阵内的反射和非反射区域的数量,以及顺序反射区域的数量等等。 这些符号可以以二维方式写入盘中,例如跨越相邻的轨道,或以三维方式,例如跨越相邻的数据层。

    METHOD AND SYSTEM FOR MODULATION CODING AND SYNCHRONIZATION
    25.
    发明申请
    METHOD AND SYSTEM FOR MODULATION CODING AND SYNCHRONIZATION 有权
    用于调制编码和同步的方法和系统

    公开(公告)号:US20100149958A1

    公开(公告)日:2010-06-17

    申请号:US12336399

    申请日:2008-12-16

    IPC分类号: G11B7/24

    摘要: The present techniques provide systems and methods for modulation coding of data on optical disks, such as holographic data disks, and techniques for reading that data back from the disks. The techniques involve parsing a bit stream into a sequence of individual bit-patterns, and then using the individual bit patterns to select a symbol, or matrix, from a lookup table of previously selected matrices. The symbols are selected according to predetermined criteria that may help make the disk more resistant to interferences and errors, such as surface scratches, and the like. For example, criteria that may be used to select the symbols are the number of reflective and non-reflective regions within each matrix, and the number of sequential reflective regions, among others. The symbols may be written to the disk in a two-dimensional fashion, e.g., across adjacent tracks, or in a three-dimensional fashion, e.g., across adjacent data layers.

    摘要翻译: 本技术提供了用于光盘上的数据的调制编码的系统和方法,例如全息数据盘,以及从盘读出数据的技术。 这些技术涉及将比特流解析为单个比特模式的序列,然后使用各个比特模式从先前选择的矩阵的查找表中选择符号或矩阵。 根据预定标准来选择符号,其可以帮助磁盘更好地抵抗诸如表面划痕等的干扰和错误。 例如,可以用于选择符号的标准是每个矩阵内的反射和非反射区域的数量,以及顺序反射区域的数量等等。 这些符号可以以二维方式写入盘中,例如跨越相邻的轨道,或以三维方式,例如跨越相邻的数据层。

    SYSTEM AND METHOD FOR STORAGE OF DATA IN CIRCULAR DATA TRACKS ON OPTICAL DISCS
    28.
    发明申请
    SYSTEM AND METHOD FOR STORAGE OF DATA IN CIRCULAR DATA TRACKS ON OPTICAL DISCS 有权
    用于存储光盘上圆形数据轨道中的数据的系统和方法

    公开(公告)号:US20100157757A1

    公开(公告)日:2010-06-24

    申请号:US12342794

    申请日:2008-12-23

    IPC分类号: G11B15/52

    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。

    System and method for storage of data in circular data tracks on optical discs
    29.
    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

    IPC分类号: G11B7/00

    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。

    SYSTEM AND METHOD FOR PROTECTING PIRACY IN OPTICAL STORAGE
    30.
    发明申请
    SYSTEM AND METHOD FOR PROTECTING PIRACY IN OPTICAL STORAGE 审中-公开
    用于保护光存储中的盗版的系统和方法

    公开(公告)号:US20110261667A1

    公开(公告)日:2011-10-27

    申请号:US12765900

    申请日:2010-04-23

    IPC分类号: G11B27/36

    摘要: A method for encoding in a holographic disk storage medium is provided. The method includes recording multiple micro-holograms such that the micro-holograms are aligned across a respective plurality of tracks and across a respective plurality of layers at a pre-determined location of an original holographic disk. The method also includes detecting a characteristic waveform signal of a reflected beam from the original holographic disk. The method further includes detecting a second waveform signal from a second holographic disk. The method also includes comparing the second waveform signal with the characteristic waveform signal. The method further includes determining authenticity of the second holographic disk based upon comparison.

    摘要翻译: 提供了一种在全息光盘存储介质中进行编码的方法。 该方法包括记录多个微全息图,使得微全息图在原始全息光盘的预定位置上跨越相应的多个轨迹并跨越相应的多个层对准。 该方法还包括检测来自原始全息盘的反射光束的特征波形信号。 该方法还包括检测来自第二全息光盘的第二波形信号。 该方法还包括将第二波形信号与特征波形信号进行比较。 该方法还包括基于比较来确定第二全息光盘的真实性。