公开(公告)号：US20070165290A1

公开(公告)日：2007-07-19

申请号：US11641200

申请日：2006-12-18

申请人： Frank Przygodda ,  Oliver Malki ,  Dietmar Braeuer

发明人： Frank Przygodda ,  Oliver Malki ,  Dietmar Braeuer

IPC分类号： G03H1/28

CPC分类号： G11B7/0065

摘要： Intensity profile correction for data pages for holographic storageThe 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 a data page with data to be recorded, andapplying a compensation profile to the data pages during recording for reducing contrast variations in the reconstructed data pages, wherein the compensation profile is determined from the irradiation history at the recording position and the sensitivity curve of the material of the holographic recording medium.

摘要翻译： 用于全息存储的数据页的强度分布校正技术领域本发明涉及用于在全息记录介质中记录数据页的方法，更具体地说，涉及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包括以下步骤：利用空间光调制器调制光束以产生具有待记录数据的数据页，并向数据页应用补偿简档 在记录期间，用于减少重建数据页中的对比度变化，其中根据记录位置处的照射历史和全息记录介质的材料的灵敏度曲线来确定补偿曲线。

公开(公告)号：US07589875B2

公开(公告)日：2009-09-15

申请号：US11641200

申请日：2006-12-18

申请人： Frank Przygodda ,  Oliver Malki ,  Dietmar Braeuer

发明人： Frank Przygodda ,  Oliver Malki ,  Dietmar Braeuer

IPC分类号： G03H1/26 ,  G03H1/10

CPC分类号： 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 a data page with data to be recorded, and applying a compensation profile to the data pages during recording for reducing contrast variations in the reconstructed data pages, wherein the compensation profile is determined from the irradiation history at the recording position and the sensitivity curve of the material of the holographic recording medium.

摘要翻译： 本发明涉及用于在全息记录介质中记录数据页的方法，更具体地说，涉及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包括以下步骤：利用空间光调制器调制光束以产生具有待记录数据的数据页，并向数据页应用补偿简档 在记录期间，用于减少重建数据页中的对比度变化，其中根据记录位置处的照射历史和全息记录介质的材料的灵敏度曲线来确定补偿曲线。

公开(公告)号：US07596463B2

公开(公告)日：2009-09-29

申请号：US12075569

申请日：2008-03-12

申请人： Oliver Malki ,  Frank Przygodda ,  Thomas Schmidt-Uhlig

发明人： Oliver Malki ,  Frank Przygodda ,  Thomas Schmidt-Uhlig

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/24044

摘要： The present invention relates to a method for calibrating a holographic storage system, and to an apparatus for reading from and/or writing to holographic storage media and a holographic storage medium suitable for such method. According to the invention, the method has the steps of: sending a set of test data pages through at least part of the holographic storage system; receiving a set of transmitted test data pages with a detector; comparing the set of transmitted test data pages with the set of sent test data pages; and correcting parameter variations of the holographic storage system based on the results of the comparing step.

摘要翻译： 本发明涉及一种用于校准全息存储系统的方法，以及用于从全息存储介质读取和/或写入全息存储介质和适用于这种方法的全息存储介质的装置。 根据本发明，该方法具有以下步骤：通过全息存储系统的至少一部分发送一组测试数据页; 用检测器接收一组发送的测试数据页; 将发送的测试数据页面集合与发送的测试数据页面集合进行比较; 以及基于比较步骤的结果来校正全息存储系统的参数变化。

公开(公告)号：US20080225671A1

公开(公告)日：2008-09-18

申请号：US12075569

申请日：2008-03-12

申请人： Oliver Malki ,  Frank Przygodda ,  Thomas Schmidt-Uhlig

发明人： Oliver Malki ,  Frank Przygodda ,  Thomas Schmidt-Uhlig

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/24044

摘要： Method for calibrating a holographic storage system The present invention relates to a method for calibrating a holographic storage system, and to an apparatus for reading from and/or writing to holographic storage media and a holographic storage medium suitable for such method. According to the invention, the method has the steps of: sending a set of test data pages through at least part of the holographic storage system; receiving a set of transmitted test data pages with a detector; comparing the set of transmitted test data pages with the set of sent test data pages; and correcting parameter variations of the holographic storage system based on the results of the comparing step.

摘要翻译： 校准全息存储系统的方法技术领域本发明涉及一种用于校准全息存储系统的方法，以及用于从全息存储介质读取和/或写入到该方法的全息存储介质的设备。 根据本发明，该方法具有以下步骤：通过全息存储系统的至少一部分发送一组测试数据页; 用检测器接收一组发送的测试数据页; 将发送的测试数据页面集合与发送的测试数据页面集合进行比较; 以及基于比较步骤的结果来校正全息存储系统的参数变化。

公开(公告)号：US20090129233A1

公开(公告)日：2009-05-21

申请号：US12291575

申请日：2008-11-12

申请人： Rudolf Eyberg ,  Frank Przygodda ,  Oliver Malki

发明人： Rudolf Eyberg ,  Frank Przygodda ,  Oliver Malki

IPC分类号： G11B7/00

CPC分类号： G11B7/00781

摘要： A data page for optical data storage for an optical storage system, i.e. a holographic storage system, is presented. The data page includes one or more areas, which are less sensitive against a movement of the data page in a movement direction of the storage medium. A holographic storage medium comprising such data pages is presented. An apparatus for reading from and/or writing to an optical medium comprising such data pages, and to a method for reading and/or writing such data pages is presented.

摘要翻译： 提出了一种用于光学存储系统的光学数据存储的数据页面，即全息存储系统。 数据页包括一个或多个区域，对存储介质移动方向上的数据页的移动较不敏感。 提出了包括这样的数据页的全息存储介质。 提供了一种用于从包括这种数据页的光学介质读取和/或写入装置以及用于读取和/或写入这种数据页的方法。

公开(公告)号：US20070242326A1

公开(公告)日：2007-10-18

申请号：US11786345

申请日：2007-04-10

申请人： Joachim Knittel ,  Frank Przygodda

发明人： Joachim Knittel ,  Frank Przygodda

IPC分类号： G03H1/04

CPC分类号： G03H1/22 ,  G03H2001/2223 ,  G03H2001/2289 ,  G11B7/0065 ,  G11B7/1374 ,  G11B2007/13727 ,  Y10S359/90

摘要： The present invention relates to a method for compensating for a wavelength mismatch between a readout reference beam and a recording reference beam in a holographic storage system, and to a holographic storage system implementing the method.According to the invention, the wavelength mismatch is determined and the direction of at least part of the readout reference beam relative to a holographic storage medium is adjusted in dependence on the determined wavelength mismatch by defocusing the readout reference beam or by adjusting the focal length of an objective lens for focusing the readout reference beam into the holographic storage medium.

摘要翻译： 本发明涉及一种用于补偿全息存储系统中的读出参考光束和记录参考光束之间的波长不匹配的方法，以及实现该方法的全息存储系统。 根据本发明，确定波长不匹配，并且相对于全息存储介质的读出参考光束的至少一部分的方向根据所确定的波长失配进行调节，通过使读出的参考光束散焦或通过调整读出参考光束的焦距 用于将读出的参考光束聚焦到全息存储介质中的物镜。

公开(公告)号：US08619534B2

公开(公告)日：2013-12-31

申请号：US13518076

申请日：2010-12-07

申请人： Stephan Knappmann ,  Frank Przygodda

发明人： Stephan Knappmann ,  Frank Przygodda

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0948 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1387 ,  G11B7/13925

摘要： An apparatus for reading from or writing to a near-field optical recording medium capable of detecting tilt and spherical aberration is described. The apparatus comprises a light source for generating a reading light beam, a near-field lens, an aberration compensation element, and a diffractive optical element. The diffractive optical element is switchable between a far-field mode and a near-field mode and is adapted to generate a main light beam and four or more sub-beams from the reading light beam for determining at least a cover layer thickness error signal. For this purpose it has an outer region with a first grating period and an inner region having a diameter smaller than an effective numerical aperture of the near-field lens, which in the near-field mode has a second grating period and which has a switchable inner area having a diameter smaller than a far-field numerical aperture of the near-field lens, which in the far-field mode has the first grating period. The aberration compensation element is adapted to be adjusted based on the thickness error signal when the diffractive optical element is in the near-field mode.

摘要翻译： 描述了一种用于读取或写入能够检测倾斜和球面像差的近场光学记录介质的装置。 该装置包括用于产生读取光束的光源，近场透镜，像差补偿元件和衍射光学元件。 衍射光学元件可以在远场模式和近场模式之间切换，并且适于从读取光束产生主光束和四个或更多个子光束，用于至少确定覆盖层厚度误差信号。 为此，它具有具有第一光栅周期的外部区域和具有小于近场透镜的有效数值孔径的直径的内部区域，其在近场模式中具有第二光栅周期并且具有可切换的 内部区域的直径小于近场透镜的远场数值孔径，其在远场模式中具有第一光栅周期。 当衍射光学元件处于近场模式时，像差补偿元件适于基于厚度误差信号进行调整。

公开(公告)号：US20130003515A1

公开(公告)日：2013-01-03

申请号：US13518076

申请日：2010-12-07

申请人： Stephan Knappmann ,  Frank Przygodda

发明人： Stephan Knappmann ,  Frank Przygodda

IPC分类号： G11B7/1353

CPC分类号： G11B7/0956 ,  G11B7/0948 ,  G11B7/1353 ,  G11B7/1369 ,  G11B7/1387 ,  G11B7/13925

摘要： An apparatus for reading from or writing to a near-field optical recording medium capable of detecting tilt and spherical aberration is described. The apparatus comprises a light source for generating a reading light beam, a near-field lens, an aberration compensation element, and a diffractive optical element. The diffractive optical element is switchable between a far-field mode and a near-field mode and is adapted to generate a main light beam and four or more sub-beams from the reading light beam for determining at least a cover layer thickness error signal. For this purpose it has an outer region with a first grating period and an inner region having a diameter smaller than an effective numerical aperture of the near-field lens, which in the near-field mode has a second grating period and which has a switchable inner area having a diameter smaller than a far-field numerical aperture of the near-field lens, which in the far-field mode has the first grating period. The aberration compensation element is adapted to be adjusted based on the thickness error signal when the diffractive optical element is in the near-field mode.

摘要翻译： 描述了一种用于读取或写入能够检测倾斜和球面像差的近场光学记录介质的装置。 该装置包括用于产生读取光束的光源，近场透镜，像差补偿元件和衍射光学元件。 衍射光学元件可以在远场模式和近场模式之间切换，并且适于从读取光束产生主光束和四个或更多个子光束，用于至少确定覆盖层厚度误差信号。 为此，它具有具有第一光栅周期的外部区域和具有小于近场透镜的有效数值孔径的直径的内部区域，其在近场模式中具有第二光栅周期并且具有可切换的 内部区域的直径小于近场透镜的远场数值孔径，其在远场模式中具有第一光栅周期。 当衍射光学元件处于近场模式时，像差补偿元件适于基于厚度误差信号进行调整。

公开(公告)号：US20120257488A1

公开(公告)日：2012-10-11

申请号：US13517469

申请日：2010-12-07

申请人： Stephan Knappmann ,  Frank Przygodda

发明人： Stephan Knappmann ,  Frank Przygodda

IPC分类号： G11B7/1387 ,  G11B7/1395 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/125

CPC分类号： G02B27/56 ,  G11B7/1374 ,  G11B7/1387

摘要： A method and an apparatus for reading from a near-field optical recording medium are described. The apparatus includes: an optical system for generating a signal beam and a reference beam; a near-field lens for illuminating the signal beam onto the near-field optical recording medium, for collimating a reflected signal beam, and for reflecting the reference beam; and at least a first detector and a second detector for obtaining a homodyne detection signal from the reflected signal beam and the reflected reference beam.

摘要翻译： 描述用于从近场光学记录介质读取的方法和装置。 该装置包括：用于产生信号光束和参考光束的光学系统; 近场透镜，用于将信号光束照射到近场光学记录介质上，用于准直反射的信号光束，并用于反射参考光束; 以及至少第一检测器和第二检测器，用于从反射信号光束和反射参考光束获得零差检测信号。

公开(公告)号：US08208184B2

公开(公告)日：2012-06-26

申请号：US12587182

申请日：2009-10-02

申请人： Joachim Knittel ,  Frank Przygodda

发明人： Joachim Knittel ,  Frank Przygodda

IPC分类号： G03H1/10 ,  G03H1/12

CPC分类号： G11B7/1381 ,  G03H1/0404 ,  G03H1/12 ,  G03H1/16 ,  G03H2001/0415 ,  G03H2222/35 ,  G11B7/0065 ,  G11B7/127 ,  G11B2007/13727

摘要： A holographic storage system having an improved data page quality is described. The holographic storage system includes a special optical filter or a special light source for emphasizing the high frequency components of a reference beam and/or an object beam. This is achieved by an optical filter arranged in a Fourier plane, which has a higher attenuation at the center than at the edge. Alternatively, an adapted light source for generating the reference beam and/or the object beam is arranged in a Fourier plane. The light beam emitted by the light source has a higher intensity close to the edge than at the center.

摘要翻译： 描述了具有改进的数据页面质量的全息存储系统。 全息存储系统包括专用光学滤波器或用于强调参考光束和/或物体光束的高频分量的专用光源。 这通过布置在傅立叶平面中的滤光器来实现，其在中心处具有比在边缘处更高的衰减。 或者，用于产生参考光束和/或物体光束的适配光源被布置在傅立叶平面中。 由光源发射的光束比靠近中心处的边缘具有更高的强度。