公开(公告)号：US20240331732A1

公开(公告)日：2024-10-03

申请号：US18194231

申请日：2023-03-31

Applicant: Microsoft Technology Licensing, LLC

Inventor： Masaaki SAKAKURA ,  Rokas DREVINSKAS ,  Daniel Jonathan Finchley CLETHEROE ,  Richard John BLACK ,  Austin Nicholas DONNELLY ,  Timothy John DEEGAN ,  James Hilton CLEGG ,  Philip Athelstan WAINMAN ,  Patrick Neil ANDERSON ,  Teodora ILIEVA ,  Thomas Torsten DR WINKLER ,  Pablo Rafael Andreas Wilke BERENGUER ,  Erika Blancada ARANAS ,  Bridgette Rosanna Doris COOPER ,  Ioan Alexandru STEFANOVICI

IPC: G11B7/24044 ,  G11B7/0045 ,  G11B7/1353 ,  G11B7/1365

CPC classification number: G11B7/24044 ,  G11B7/00456 ,  G11B7/1353 ,  G11B7/1365 ,  G11B2007/0009

Abstract: A method for forming birefringent voxels comprises simultaneously generating a first seed pulse and a first data pulse. The first seed pulse and the first data pulse are spatially-separated laser pulses having different amplitudes. The first seed pulse is focused at a first seed location, and the data pulse is focused at a first data location. The first seed location and the first data location are separated by a predetermined distance along a scan path, with the first seed location being ahead of the first data location. Subsequently, a second seed pulse and a second data pulse are generated, and focused at a second seed location and second data location, respectively. The second seed and data locations are separated by the predetermined distance. The second data location is the same as the first seed location, resulting in formation of a birefringent voxel.

公开(公告)号：US20180144770A1

公开(公告)日：2018-05-24

申请号：US15355891

申请日：2016-11-18

Applicant: Oracle International Corporation

Inventor： Lingtao Wang

IPC: G11B7/0045 ,  G11B7/003 ,  G11B7/128 ,  G11B7/1263

CPC classification number: G11B7/00458 ,  G11B7/003 ,  G11B7/0062 ,  G11B7/1263 ,  G11B7/128 ,  G11B7/1353 ,  G11B7/1395 ,  G11B19/041 ,  G11B20/1879 ,  G11B2007/240017

Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and at least one lower power side beam. The optical storage system also includes a controller configured to alter an optical medium, via modulation of the higher power main beam according to a writing strategy waveform that defines at least n pulses for every n bits of data to be written to the medium, while processing a first signal resulting from the at least one lower power side beam being reflected from the medium and a second signal indicative of the writing strategy waveform to remove noise from the first signal caused by the higher power main beam to generate output indicative of the data directly after writing.

公开(公告)号：US09911450B1

公开(公告)日：2018-03-06

申请号：US15243457

申请日：2016-08-22

Applicant: Oracle International Corporation

Inventor： Lingtao Wang ,  Forrest Lundstrom ,  Matthew C. Fienberg ,  Scott D. Wilson

IPC: G11B7/135 ,  G11B7/1395 ,  G11B7/1263

CPC classification number: G11B7/1395 ,  G11B7/003 ,  G11B7/00458 ,  G11B7/1263 ,  G11B7/1353

Abstract: An optical storage system includes an optical head and a controller. The optical head is configured to split a light beam into a higher power main beam and a lower power side beam. The controller is configured to write data to an optical medium via the higher power main beam, and read, directly after writing, feedback from the optical medium containing the written data and noise caused by the higher power main beam. The controller is also configured to process the feedback using data indicative of the higher power main beam to remove the noise and generate output indicative of the written data, and automatically adjust a delay of the feedback or the data indicative of the higher power main beam based on a signal quality of the output.

公开(公告)号：US09875769B1

公开(公告)日：2018-01-23

申请号：US15243484

申请日：2016-08-22

Applicant: Oracle International Corporation

Inventor： Lingtao Wang ,  Matthew C. Fienberg ,  Forrest Lundstrom ,  Scott D. Wilson

IPC: G11B7/00 ,  G11B20/10 ,  G11B7/1395

CPC classification number: G11B20/10046 ,  G11B7/003 ,  G11B7/00458 ,  G11B7/1353 ,  G11B20/10481

Abstract: An optical storage system includes an optical head configured to split a light beam into a higher power main beam and a lower power side beam. The system also includes a controller. The controller is configured to modulate the higher power main beam according to writing commands to write to an optical medium while processing first data resulting from the lower power side beam being reflected from the medium and second data obtained from a look-up table that maps the writing commands to digital representations of filtered writing strategy waveforms to remove noise from the first data caused by the higher power main beam and generate output indicative of written data directly after writing.

公开(公告)号：US20160307591A1

公开(公告)日：2016-10-20

申请号：US15101239

申请日：2013-12-04

Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.

Inventor： Makoto HOSAKA ,  Shinji FUJITA

IPC: G11B7/1353 ,  G11B7/1374

CPC classification number: G11B7/1353 ,  G03H1/26 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/1374 ,  G11B7/1381

Abstract: Provided are an optical information reproduction device and a method therefor with which the influence of reference light reflected from the surface of a disk can be reduced, thereby enabling data to be reproduced in a stable manner in an optical information reproduction device that uses holography. The information reproduction device, which reproduces from a recording medium information that has been recorded on the recording medium by the formation of a hologram, is equipped with: a light output unit that emits laser light; an optical system that generates reference light from the laser light emitted from the light output unit; an objective lens that reproduction signal light reproduced by the reference light with which the recording medium has been irradiated enters; a light detector that receives the reproduction signal light propagated by the objective lens; a medium-reflected light reduction unit that reduces the amount of medium-reflected light (generated when the recording medium reflects the reference light) with which the light detector is irradiated; and a control unit that controls the operation of the information reproduction device.

Abstract translation: 提供了一种光学信息再现装置及其方法，通过该光学信息再现装置及其方法可以减少从盘表面反射的参考光的影响，从而使数据能够在使用全息术的光学信息再现装置中稳定地再现。 通过形成全息图从已记录在记录介质上的记录介质再现的信息再现装置配备有：发射激光的光输出单元; 光学系统，其从所述光输出单元发射的激光产生参考光; 由照射了记录介质的基准光再现的再生信号光进入的物镜; 接收由物镜传播的再现信号光的光检测器; 中等反射光减少单元，其减少光检测器被照射的中等反射光的量（当记录介质反射参考光时产生）; 以及控制信息再现装置的操作的控制单元。

公开(公告)号：US20160171997A1

公开(公告)日：2016-06-16

申请号：US15050665

申请日：2016-02-23

Applicant: Kabushiki Kaisha Toshiba

Inventor： Hideaki OKANO ,  Kazuo WATABE ,  Akihito OGAWA ,  Takashi USUI

IPC: G11B7/1392 ,  G11B7/1374 ,  G11B7/1353

CPC classification number: G11B7/13927 ,  G11B7/0053 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/24038 ,  G11B7/2405

Abstract: According to an embodiment, a recording/reproducing apparatus includes a diffraction grating and a light-receiving element. The diffraction grating divides return light from the guide layer in accordance with areas. The areas include a first area and a second area that does not overlap the first area. The light-receiving element includes (i) a first detecting cell group which receives a zero-order beam to which astigmatism is imparted, (ii) a second detecting cell group which receives at least one of a positive and negative first-order beam, which passes the first area and made astigmatic, and (iii) a third detecting cell group which receives at least one of a positive and negative first-order beam, which passes the second area and made astigmatic.

Abstract translation: 根据实施例，记录/再现装置包括衍射光栅和光接收元件。 衍射光栅根据区域划分来自引导层的返回光。 这些区域包括不与第一区域重叠的第一区域和第二区域。 光接收元件包括：（i）第一检测单元组，其接收施加了像散的零级波束;（ii）第二检测单元组，其接收正和负一阶波束中的至少一个， 其通过第一区域并使其为散光，以及（iii）第三检测单元组，其接收通过第二区域并使其为散光的正一和第一波束中的至少一个。

公开(公告)号：US20160111123A1

公开(公告)日：2016-04-21

申请号：US14892019

申请日：2013-06-14

Applicant: HITACHI CONSUMER ELECTRONICS CO., LTD.

Inventor： Mayumi NAGAYOSHI ,  Taku HOSHIZAWA ,  Kazuyoshi YAMAZAKI ,  Makoto HOSAKA

IPC: G11B7/1353 ,  G11B7/1392 ,  G11B7/1374 ,  G11B7/1362 ,  G11B7/1359

CPC classification number: G11B7/1353 ,  G03H1/0465 ,  G11B7/0065 ,  G11B7/1359 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/13927 ,  G11B7/1398

Abstract: The optical information recording/reproduction device for recording information by irradiating an optical information recording medium with signal light and reference light to form a hologram, and reproducing the information by irradiating the hologram with the reference light, wherein the optical information recording/reproduction device is provided with a branching element for branching laser light from a laser light source into signal light and reference light, a spatial light modulation unit for adding two-dimensional information to the signal light, an objective lens for irradiating an optical information recording medium with the signal light, a photodetector for detecting diffracted light from the optical information recording medium when irradiated with the reference light, and an optical axis adjustment unit disposed between the laser light source and the branching element, the optical axis adjustment unit adjusting the optical axis of the laser light.

Abstract translation: 光信息记录/再现装置，用于通过用信号光和参考光照射光学信息记录介质来形成全息图来记录信息，并通过用参考光照射全息图再现信息，其中光信息记录/再现装置是 设置有用于将来自激光光源的激光分支为信号光和参考光的分支元件，用于将二维信息添加到信号光的空间光调制单元，用于向信息记录介质照射信号的物镜 光，用于当用参考光照射时检测来自光学信息记录介质的衍射光的光电检测器，以及设置在激光光源和分支元件之间的光轴调节单元，光轴调节单元调节激光的光轴 光。

公开(公告)号：US09310536B2

公开(公告)日：2016-04-12

申请号：US13778153

申请日：2013-02-27

Applicant: Panasonic Corporation

Inventor： Katsuhiko Hayashi ,  Yasuhiro Tanaka ,  Michihiro Yamagata ,  Yoshiaki Komma

IPC: G02B5/18 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/1392 ,  G11B7/1376 ,  G11B7/00

CPC classification number: G02B5/1876 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An objective lens element having excellent compatibility with optical discs having different base material thicknesses is provided. The objective lens element has optically functional surfaces on an incident side and an exit side. At least either one of the optically functional surfaces on the incident side and the exit side includes a diffraction portion which satisfies at least either one of the following formulas (1) and (2): θ1×θ2

Abstract translation: 提供了具有与具有不同基底材料厚度的光盘的良好兼容性的物镜元件。 物镜元件在入射侧和出射侧具有光学功能表面。 入射侧和出射侧的光学功能表面中的至少任一方包括满足下述式（1）和（2）中的至少一个的衍射部：＆lt; 1＆gt; 2＆lt; 0（“ ד表示乘法）（1），（sin＆hetas; 2）/λ2= - （sin＆hetas; 1）/λ1（2），其中θ是具有提供最大值的衍射级的光束的衍射角 在波长λ1下的衍射效率和＆amp; Thetas; 2是具有在波长λ2下提供最大衍射效率的衍射级的光束的衍射角。

公开(公告)号：US20160086628A1

公开(公告)日：2016-03-24

申请号：US14890970

申请日：2013-05-22

Applicant: Hitachi, Ltd.

Inventor： Jiro HASHIZUME ,  Kazuyoshi YAMAZAKI ,  Seiichi KATOU ,  Katsuhiko KIMURA

IPC: G11B7/1353 ,  G02B26/08

CPC classification number: G11B7/1353 ,  G02B26/08 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/1381

Abstract: Diffracted light generated by a recording medium in reproduction is largely blocked by a spatial filter because of a position shift of the recording medium. Thus, the light amount of the diffracted light converged onto an optical detector is reduced and a satisfactory level of a reproducing signal cannot be obtained. In addition, in recording, it is necessary to fix the position of the spatial filter in rays for removing unnecessary frequency components or the like in a light beam emitted from a light source. In actuators having at least two spatial filters, one spatial filter is mounted on an actuator driven along two or more axes and moves independently of another spatial filter, and the other spatial filter is fixed to a common one-axis actuator. Switching of the positions of the spatial filters is performed by the common one-axis actuator.

Abstract translation: 由于记录介质的位置偏移，由再现中的记录介质产生的衍射光被空间滤波器大大阻挡。 因此，聚光到光学检测器上的衍射光的光量减少，并且不能获得满意的再现信号电平。 此外，在记录中，需要用光线固定空间滤波器的位置，以消除从光源发射的光束中不必要的频率分量等。 在具有至少两个空间滤波器的致动器中，一个空间滤波器安装在沿着两个或多个轴驱动的致动器上，并独立于另一个空间滤波器移动，另一个空间滤波器被固定到公共的单轴致动器。 空间滤波器的位置的切换由公共单轴致动器执行。

公开(公告)号：US20160041525A1

公开(公告)日：2016-02-11

申请号：US14816441

申请日：2015-08-03

Applicant: Hitachi-LG Data Storage, Inc.

Inventor： Takeru UTSUGI ,  Kazuyoshi YAMAZAKI

IPC: G03H1/26 ,  G02B27/09 ,  G02B5/32 ,  G03H1/02 ,  G03H1/04

CPC classification number: G03H1/265 ,  G02B5/32 ,  G02B27/0927 ,  G02B27/0944 ,  G03H2223/18 ,  G03H2223/23 ,  G11B7/0065 ,  G11B7/08564 ,  G11B7/1353 ,  G11B7/1359

Abstract: To reduce an influence of stray light and stably record/reproduce high-quality data in holographic recording/reproduction. A holographic memory device includes an optical system that guides a reference beam to an optical information recording medium at a desired angle of incidence, a control part that controls the angle of incidence of the reference beam generated in the optical system, and a lens part that images the reference beam in a desired position of the optical information recording medium. Further, at least a first light beam at a first angle and a second light beam at a second angle different from the first angle are output from the optical element, and the optical element is provided so that the first light beam may propagate within an effective diameter of the lens part and the second light beam may propagate to an outside of the effective diameter of the lens part.

Abstract translation: 减少杂散光的影响，稳定地记录/再现全息记录/再现中的高质量数据。 一种全息存储器件包括一个光学系统，该光学系统将参考光束以期望的入射角度引导到光学信息记录介质;控制部分，其控制在光学系统中产生的参考光束的入射角;以及透镜部分， 将参考光束成像在光学信息记录介质的期望位置。 此外，从光学元件输出至少第一角度的第一光束和与第一角度不同的第二角度的第二光束，并且提供光学元件，使得第一光束可以在有效 透镜部分的直径和第二光束可以传播到透镜部分的有效直径的外侧。