Method for wavelength mismatch compensation in a holographic storage system
    1.
    发明公开
    Method for wavelength mismatch compensation in a holographic storage system 审中-公开
    维也纳自治大学

    公开(公告)号:EP1845523A1

    公开(公告)日:2007-10-17

    申请号:EP06007810.2

    申请日:2006-04-13

    IPC分类号: G11B7/0065 G03H1/22

    摘要: The present invention relates to a method for compensating for a wavelength mismatch between a readout reference beam (8') and a recording reference beam (8) in a holographic storage system (1), and to a holographic storage system (1) implementing the method.
    According to the invention, the wavelength mismatch (Δλ) is determined (20) and the direction of at least part of the readout reference beam (8') relative to a holographic storage medium (10) is adjusted (22,23) in dependence on the determined wavelength mismatch (Δλ).
    The recording wavelength is recorded on the recording medium.

    摘要翻译: 本发明涉及一种用于补偿全息存储系统(1)中的读出参考光束(8')和记录参考光束(8)之间的波长不匹配的方法,以及全息存储系统(1) 方法。 根据本发明,确定波长不匹配(“»)(20),并且相对于全息存储介质(10)的读出参考光束(8')的至少一部分的方向被调整(22,23) 依赖于确定的波长不匹配(“»)。 记录波长被记录在记录介质上。

    Method for servo control in a holographic storage system
    2.
    发明公开
    Method for servo control in a holographic storage system 审中-公开
    Verfahren zur Servosteuerung in einem holografischen Speichersystem

    公开(公告)号:EP1890285A1

    公开(公告)日:2008-02-20

    申请号:EP06119082.3

    申请日:2006-08-17

    发明人: Przygodda, Frank

    IPC分类号: G11B7/0065 G11B7/09 G03H1/04

    CPC分类号: G11B7/0065 G11B7/083

    摘要: The present invention relates to a method for servo control in a holographic storage system (1), and to a holographic storage system (1) using such method for servo control, which allows a correct focusing of the holographic beams despite tolerances within the optics and the holographic storage medium. According to the invention, a method for servo control in a holographic storage system (1) for holographic storage media (9) with a servo layer (92) for generating a servo signal using a servo light beam (14), is characterized in that an additional servo signal is generated from a reconstructed signal beam (10) .

    摘要翻译: 本发明涉及全息存储系统(1)中的伺服控制方法以及使用这种用于伺服控制的方法的全息存储系统(1),其允许全息光束的正确聚焦,尽管在光学器件内具有公差, 全息存储介质。 根据本发明,一种用于使用伺服光束(14)产生伺服信号的伺服层(92)的用于全息存储介质(9)的全息存储系统(1)中的伺服控制方法,其特征在于: 从重建的信号光束(10)产生附加的伺服信号。

    Holographic storage system using destructive interference for pixel detection
    3.
    发明公开
    Holographic storage system using destructive interference for pixel detection 审中-公开
    全球技术会议系统

    公开(公告)号:EP1895519A1

    公开(公告)日:2008-03-05

    申请号:EP06119969.1

    申请日:2006-09-01

    发明人: Przygodda, Frank

    IPC分类号: G11B7/0065 G03H1/22

    摘要: The present invention relates to a holographic storage system (1), and more specifically to a method for pixel detection in a coaxial holographic storage system.
    In a holographic storage system (1) according to the invention, with a coaxial arrangement of an object beam (3) and a reference beam (2) the bright pixels within the object beam (3) have a phase shift of essentially π relative to the reference beam (2). For readout of a data page contained in a reconstructed object beam (10) a detector (11) detects an interference pattern generated by the interference between the reference beam (2) and the reconstructed object beam (10).

    摘要翻译: 全息存储系统技术领域本发明涉及一种全息存储系统(1),更具体地涉及一种同轴全息存储系统中的像素检测方法。 在根据本发明的全息存储系统(1)中,通过对象光束(3)和参考光束(2)的同轴布置,物体光束(3)内的明亮像素具有基本相对于 参考光束(2)。 为了读出包含在重建物体光束(10)中的数据页,检测器(11)检测由参考光束(2)和重构物体光束(10)之间的干涉产生的干涉图案。

    Intensity profile correction for data pages for holographic storage
    4.
    发明公开
    Intensity profile correction for data pages for holographic storage 审中-公开
    IntensitätsprofilkorrekturfürDatenseitenfürholographische Speicherung

    公开(公告)号:EP1818918A1

    公开(公告)日:2007-08-15

    申请号:EP06101435.3

    申请日:2006-02-09

    IPC分类号: G11B7/0065

    CPC分类号: G11B7/128 G11B7/0065

    摘要: The present invention relates to a method for recording data pages in a holographic recording medium, and more specifically to a method for compensating for sensitivity variations of the holographic material of the holographic recording medium. According to the invention, a method for recording data pages on a holographic recording medium has the steps of:
    - modulating a light beam with a spatial light modulator to generate (11) a data page with data to be recorded, and
    - applying (12) a compensation profile to the data pages during recording for reducing contrast variations in the reconstructed data pages.

    摘要翻译: 本发明涉及一种用于在全息记录介质中记录数据页的方法,更具体地涉及一种用于补偿全息记录介质的全息材料的灵敏度变化的方法。 根据本发明,用于在全息记录介质上记录数据页的方法具有以下步骤: - 利用空间光调制器调制光束以产生(11)具有待记录数据的数据页,以及 - 应用(12 )在记录期间对数据页的补偿简档,以减少重构数据页中的对比度变化。