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    • 58. 发明申请
    • OPTICAL HOLOGRAPHIC DEVICE AND METHOD WITH ALINGNMENT MEANS
    • 光学手术装置和方法与辅助手段
    • US20090323500A1
    • 2009-12-31
    • US12441580
    • 2007-09-17
    • Frank Jeroen Pieter SchuurmansFloris Maria Hermansz Crompvoets
    • Frank Jeroen Pieter SchuurmansFloris Maria Hermansz Crompvoets
    • G11B7/00
    • G11B7/0065G11B7/083
    • The present invention relates to an optical holographic device and a corresponding method for reading out a data page recorded in a holographic recording medium (106) and carrying data modulated using a block modulation code, according to which a data page is divided into a number of blocks and a code constraint is applied defining the number of data symbols in a block having a predetermined symbol value. In order to avoid for storing any alignment marks for determining the alignment of the blocks of the block modulation code, a device is proposed having alignment means (115) for determining the alignment of the blocks in a detected imaged data page by iteratively determining, for a different alignment of the blocks in each iteration, whether for said alignments said code constraint is fulfilled or not, and decoding means (116) for decoding the block modulated data from said detected imaged data page based on the determined alignment of the blocks.
    • 本发明涉及一种光学全息设备和相应的方法,用于读出记录在全息记录介质(106)中的数据页并携带使用块调制码调制的数据,根据该方法,数据页被分成多个 应用块和代码约束来定义具有预定符号值的块中的数据符号数。 为了避免存储用于确定块调制码的块的对准的任何对准标记,提出了一种具有对准装置(115)的装置,用于通过迭代地确定检测到的成像数据页中的块的对准来确定 基于所确定的块的对准,解码装置(116),用于对所述检测到的成像数据页中的块调制数据进行解码,以及解码装置(116)。
    • 59. 发明申请
    • METHOD OF READING INFORMATION FROM A HOLOGRAPHIC DATA STORAGE MEDIUM AND HOLOGRAPHIC DATA READ OUT DEVICE
    • 从全息数据存储介质读取信息的方法和全息数据读出设备
    • US20090207415A1
    • 2009-08-20
    • US12278987
    • 2007-02-12
    • Frank Jeroen Pieter Schuurmans
    • Frank Jeroen Pieter Schuurmans
    • G01B9/021
    • G11B7/0065G11B7/127G11B7/131
    • The present invention relates to a method of reading information from a holographic data storage medium (10), comprising the steps of: projecting a reference beam (12) having defined properties of a first type into the holographic data storage medium, thereby generating a first diffracted beam (14), detecting the first diffracted beam by a detector array (16) having a plurality of detector areas, selecting a first set of detector areas useful for reconstructing information stored in the holographic data storage medium, reading out data from the first set of detector areas, and not reading out data from other detector areas, projecting a reference beam having defined properties of a second type different from the first type into the holographic data storage medium, thereby generating a second diffracted beam, detecting the second diffracted beam by the detector array having a plurality of detector areas, and selecting a second set of detector areas useful for reconstructing information stored in the holographic data storage medium, reading out data from the second set of detector areas, and not reading out data from other detector areas, the second set of detector areas being different from the first set of detector areas. The present invention further relates to a holographic data read out device.
    • 本发明涉及一种从全息数据存储介质(10)读取信息的方法,包括以下步骤:将具有第一类型的定义特性的参考光束(12)投影到全息数据存储介质中,从而产生第一 衍射光束(14),通过具有多个检测器区域的检测器阵列(16)检测第一衍射光束,选择可用于重建存储在全息数据存储介质中的信息的第一组检测器区域,从第一 并且不从其他检测器区域读出数据,将具有不同于第一类型的第二类型的具有限定特性的参考光束投影到全息数据存储介质中,从而生成第二衍射光束,检测第二衍射光束 通过具有多个检测器区域的检测器阵列,并且选择可用于重建信息的第二组检测器区域 存储在全息数据存储介质中,从第二组检测器区域读出数据,并且不从其他检测器区域读出数据,第二组检测器区域与第一组检测器区域不同。 本发明还涉及全息数据读出装置。