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    HOLOGRAPHIC STORAGE METHOD AND DEVICE BASED ON ANGLE-SHIFT MULTIPLEXING
    2.
    发明公开
    HOLOGRAPHIC STORAGE METHOD AND DEVICE BASED ON ANGLE-SHIFT MULTIPLEXING 审中-公开

    公开(公告)号：EP3855435A1

    公开(公告)日：2021-07-28

    申请号：EP21152155.4

    申请日：2021-01-18

    申请人： Amethystum Storage Technology Co., Ltd.

    发明人： ZHENG, Mu ,  LUO, Tiewei ,  TIAN, Jun ,  HU, Dejiao ,  LIU, Yicheng

    IPC分类号： G11B7/0065 ,  G11B7/128

    摘要： The invention discloses a holographic multiplex recording method, which combines technical advantages of angle multiplexing and shift multiplexing, and improves capacity and stability of a system. A medium contracts and expands due to environmental temperature fluctuations, which causes broken Bragg condition. However, the angle multiplexing has the advantages that the broken Bragg condition caused by contraction and expansion of the medium can be corrected by controlling an incident angle of a reference beam and an emitting wavelength of a laser, and the problem of a weak reproduction signal caused by the environmental temperature fluctuations is solved. On the other hand, the advantages of shift multiplex recording are that cross-write noise is not accumulated and that a multiplexing number can be improved by using a cross-shift multiplex method. According to the present invention, a large-capacity recording device with high stability is realized by combining the two technologies.

    INFORMATION READOUT DEVICE AND INFORMATION READOUT METHOD
    3.
    发明公开
    INFORMATION READOUT DEVICE AND INFORMATION READOUT METHOD 审中-公开

    公开(公告)号：EP3731228A1

    公开(公告)日：2020-10-28

    申请号：EP20173182.5

    申请日：2015-09-15

    申请人： Dai Nippon Printing Co., Ltd.

    发明人： NAKATA, Naoko ,  ARITSUKA, Yuki

    IPC分类号： G11B7/0065 ,  G11B7/0045 ,  G11B7/135 ,  G11B7/005

    摘要： An aspect of the invention relates to an information readout device which reads out digital data stored at an information recording medium by using an information storage device, the information readout device, comprising: an image photographing device (400) which magnifies and photographs a domain to be photographed which is a part of a recording surface of the information recording medium (M) to capture an obtained photographed image as image data; a photographed-image housing portion (510) which houses the photographed image; a bit-recording-domain recognizing portion (520) which detects an alignment mark (Q) from the photographed image housed in the photographed-image housing portion (510), thereby recognizing individual bit recording domains (Ab); a unit-bit-matrix recognizing portion (530) which recognizes a unit bit matrix (B(Ui)) on the basis of a pattern inside the bit recording domain (Ab); a scanning controller (540) which controls a change in domain to be photographed by the image photographing device (400) so that a photographed image can be obtained in all bit recording domains (Ab) to be readout; and a data restoration portion (550) which creates unit data (Ui) from individual unit bit matrixes (B(Ui)) recognized by the unit-bit-matrix recognizing portion (520) to synthesize individual unit data (Ui), thereby restoring the digital data (D) stored. Further aspects relate to a computer program and an information readout method.

    Micro holographic recording medium comprising stacked, interleaved recording layers
    9.
    发明公开
    Micro holographic recording medium comprising stacked, interleaved recording layers 有权
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    公开(公告)号：EP2693434A1

    公开(公告)日：2014-02-05

    申请号：EP13178075.1

    申请日：2013-07-25

    申请人： General Electric Company

    发明人： Shi, Xiaolei ,  Boden, Eugene Pauling ,  Chan, Kwok Pong ,  Lorraine, Peter William ,  Ostroverkhov, Victor Petrovich ,  Zhao, Ri-An

    IPC分类号： G11B7/24038 ,  G11B7/0065 ,  G11B7/1275

    CPC分类号： G11B7/24038 ,  G11B7/26 ,  G11B2007/240025

    摘要： A component includes a micro-hologram layer (10), where the micro-hologram layer (10) includes layers inert to light (14) interleaved with layers of functional film (12). The functional film layers (12) are made of a material that undergoes a change in its refractive index when illuminated by a light beam, yet undergoes no change in its refractive index when illuminated by a different light beam. The components (30) may further include interleaved spacer films (20) with multiple micro-hologram layers (10) and other elements (e.g., servo layer (44), coatings (48), and the like (40, 42)) so as to comprise a data storage device (100). Methods of manufacturing the component and device are also disclosed.

    摘要翻译： 分量包括微全息图层（10），其中微全息图层（10）包括与功能膜（12）层交错的光惰性的层（14）。 功能薄膜层（12）由当被光束照射时经历其折射率变化的材料制成，而当被不同光束照射时其折射率没有变化。 组件（30）还可以包括具有多个微全息图层（10）和其它元件（例如，伺服层（44），涂层（48）等）（40,42））的交错隔离膜（20）） 包括数据存储设备（100）。 还公开了制造组件和装置的方法。