公开(公告)号：US20070242326A1

公开(公告)日：2007-10-18

申请号：US11786345

申请日：2007-04-10

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G03H1/04

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

Abstract: 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.

Abstract translation: 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：US08208184B2

公开(公告)日：2012-06-26

申请号：US12587182

申请日：2009-10-02

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G03H1/10 ,  G03H1/12

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US07876482B2

公开(公告)日：2011-01-25

申请号：US11786345

申请日：2007-04-10

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G03H1/22

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

Abstract: A method for compensating for a wavelength mismatch between a readout reference beam and a recording reference beam in a holographic storage system is described. In order to compensate for a wavelength mismatch in a first step the wavelength mismatch is determined. In a second step the direction of at least part of the readout reference beam is adjusted relative to a holographic storage medium 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.

Abstract translation: 描述了在全息存储系统中补偿读出参考光束和记录参考光束之间的波长失配的方法。 为了补偿第一步骤中的波长不匹配，确定波长不匹配。 在第二步骤中，读取参考光束的至少一部分的方向相对于全息存储介质根据所确定的波长不匹配进行调整，通过使读出的参考光束散焦或通过调整用于聚焦读出的物镜的焦距 参考光束进入全息存储介质。

公开(公告)号：US20090051990A1

公开(公告)日：2009-02-26

申请号：US12218002

申请日：2008-07-10

Applicant: Frank Przygodda ,  Joachim Knittel

Inventor： Frank Przygodda ,  Joachim Knittel

IPC: G03H1/02

CPC classification number: G03H1/16 ,  G11B7/0065 ,  G11B7/128 ,  G11C13/042

Abstract: The present invention relates to a phase mask for holographic data storage, and to a method and an apparatus for reading from and/or writing to holographic storage media using such a phase mask.According to the invention, the phase mask has a plurality of phase cells, whose size is equal to an integer multiple of the size of the pixels of a spatial light modulator of the apparatus. The phase cells have a phase variation on sub-cell scale, which is inverse for essentially half the number of phase cells.

Abstract translation: 本发明涉及用于全息数据存储的相位掩模以及使用这种相位掩模从全息存储介质读取和/或写入全息存储介质的方法和装置。 根据本发明，相位掩模具有多个相位单元，其尺寸等于该装置的空间光调制器的像素尺寸的整数倍。 相位单元在子单元尺度上具有相位变化，其基本上相对于相位单元数量的一半是相反的。

公开(公告)号：US08179767B2

公开(公告)日：2012-05-15

申请号：US12736245

申请日：2009-03-16

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G11B7/00

CPC classification number: G03H1/04 ,  G03H2001/0417 ,  G03H2210/22 ,  G03H2223/13 ,  G03H2225/55 ,  G11B7/00772 ,  G11B7/128

Abstract: A data page for use in a holographic data storage system, and to a method and an apparatus for writing to holographic storage media using such a data page are described. The data page has dark zones for each boundary between phase blocks of a phase mask of the holographic data storage system, which consist of switched-off pixels that are not used for encoding data, and which coincide with the boundaries between the phase blocks.

Abstract translation: 描述了在全息数据存储系统中使用的数据页，以及使用这样的数据页向全息存储介质写入方法和装置。 数据页面对于全息数据存储系统的相位掩模的相位块之间的每个边界具有暗区域，其由不用于编码数据的关闭像素组成，并且与相位块之间的边界一致。

公开(公告)号：US20100097676A1

公开(公告)日：2010-04-22

申请号：US12587182

申请日：2009-10-02

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G03H1/16

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

Abstract: 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 is the center.

Abstract translation: 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。 由光源发射的光束靠近边缘具有比在中心处更高的强度。

公开(公告)号：US20090237760A1

公开(公告)日：2009-09-24

申请号：US12381686

申请日：2009-03-16

Applicant: Frank Przygodda ,  Joachim Knittel

Inventor： Frank Przygodda ,  Joachim Knittel

IPC: G03H1/06

CPC classification number: G11B7/0065 ,  G03H1/28 ,  G03H2222/20

Abstract: Holographic storage system with multiple reference beams An apparatus for reading from and/or writing to holographic storage media is described, and more specifically an apparatus for reading from and/or writing to holographic storage media with two or more reference beams that overlap inside the holographic storage medium for reading and/or writing a single hologram. The two or more reference beams are mutually incoherent during reading and/or writing.

Abstract translation: 具有多个参考光束的全息存储系统描述了用于从全息存储介质读取和/或写入全息存储介质的装置，更具体地说，一种用于从具有两个或更多个参考光束的全息存储介质读取和/或写入全息存储介质的装置， 用于读取和/或写入单个全息图的存储介质。 在读取和/或写入期间，两个或更多个参考光束相互不相干。

公开(公告)号：US08169676B2

公开(公告)日：2012-05-01

申请号：US12381686

申请日：2009-03-16

Applicant: Frank Przygodda ,  Joachim Knittel

Inventor： Frank Przygodda ,  Joachim Knittel

IPC: G03H1/10 ,  G03H1/12 ,  G03H1/28

CPC classification number: G11B7/0065 ,  G03H1/28 ,  G03H2222/20

Abstract: An apparatus for reading from and/or writing to holographic storage media is described, and more specifically an apparatus for reading from and/or writing to holographic storage media with two or more reference beams that overlap inside the holographic storage medium for reading and/or writing a single hologram. The two or more reference beams are mutually incoherent during reading and/or writing.

Abstract translation: 描述了一种用于从全息存储介质读取和/或写入到全息存储介质的装置，更具体地说，一种用于从具有两个或更多个参考光束的全息存储介质读取和/或写入具有两个或更多个参考光束的装置，该参考光束在全息存储介质内重叠用于读取和/ 写一个单一的全息图。 在读取和/或写入期间，两个或更多个参考光束相互不相干。

公开(公告)号：US07990594B2

公开(公告)日：2011-08-02

申请号：US12218002

申请日：2008-07-10

Applicant: Frank Przygodda ,  Joachim Knittel

Inventor： Frank Przygodda ,  Joachim Knittel

IPC: G02B5/32

CPC classification number: G03H1/16 ,  G11B7/0065 ,  G11B7/128 ,  G11C13/042

Abstract: The present invention relates to a phase mask for holographic data storage, and to a method and an apparatus for reading from and/or writing to holographic storage media using such a phase mask.According to the invention, the phase mask has a plurality of phase cells, whose size is equal to an integer multiple of the size of the pixels of a spatial light modulator of the apparatus. The phase cells have a phase variation on sub-cell scale, which is inverse for essentially half the number of phase cells.

Abstract translation: 本发明涉及用于全息数据存储的相位掩模以及使用这种相位掩模从全息存储介质读取和/或写入全息存储介质的方法和装置。 根据本发明，相位掩模具有多个相位单元，其尺寸等于该装置的空间光调制器的像素尺寸的整数倍。 相位单元在子单元尺度上具有相位变化，其基本上相对于相位单元数量的一半是相反的。

公开(公告)号：US20110007620A1

公开(公告)日：2011-01-13

申请号：US12736245

申请日：2009-03-16

Applicant: Joachim Knittel ,  Frank Przygodda

Inventor： Joachim Knittel ,  Frank Przygodda

IPC: G11B7/0065

CPC classification number: G03H1/04 ,  G03H2001/0417 ,  G03H2210/22 ,  G03H2223/13 ,  G03H2225/55 ,  G11B7/00772 ,  G11B7/128

Abstract: A data page for use in a holographic data storage system, and to a method and an apparatus for writing to holographic storage media using such a data page are described. The data page has dark zones for each boundary between phase blocks of a phase mask of the holographic data storage system, which consist of switched-off pixels that are not used for encoding data, and which coincide with the boundaries between the phase blocks.

Abstract translation: 描述了在全息数据存储系统中使用的数据页，以及使用这样的数据页向全息存储介质写入方法和装置。 数据页面对于全息数据存储系统的相位掩模的相位块之间的每个边界具有暗区域，其由不用于编码数据的关闭像素组成，并且与相位块之间的边界一致。