公开(公告)号：US07467412B2

公开(公告)日：2008-12-16

申请号：US10968601

申请日：2004-10-19

申请人： Hiromichi Ishibashi ,  Yoshiaki Komma

发明人： Hiromichi Ishibashi ,  Yoshiaki Komma

IPC分类号： G06F7/04 ,  G06F17/30 ,  G06K9/00 ,  H03M1/68 ,  H04K1/00 ,  H04L9/00 ,  H04L9/32 ,  H04M7/16

CPC分类号： G11B20/00086 ,  G11B20/00007 ,  G11B20/0021 ,  G11B20/00282 ,  G11B20/00666 ,  G11B2220/40

摘要： A data transfer system transfers original data from a first data storage device to a second data storage device. The transfer system includes a compressor, an encryptor, and a controller. The compressor receives the original data from the first data storage device, generates compressed data of a smaller size, and passes the compressed data to the second data storage device. The encryptor makes a predetermined cryptographic key and passes the key to the second data storage device. The encryptor also receives the original data from the first data storage device, encrypts the original data with the cryptographic key and then sends the encrypted data back to the first data storage device. The controller controls the compressor and the encryptor and gives the first data storage device a first erase instruction, telling the first data storage device to erase the original data, in accordance with a first transfer command.

摘要翻译： 数据传送系统将原始数据从第一数据存储装置传送到第二数据存储装置。 传送系统包括压缩器，加密器和控制器。 压缩机从第一数据存储装置接收原始数据，生成较小尺寸的压缩数据，并将压缩数据传送到第二数据存储装置。 加密器进行预定的加密密钥并将密钥传递给第二数据存储设备。 加密器还从第一数据存储装置接收原始数据，用加密密钥加密原始数据，然后将加密数据发送回第一数据存储装置。 控制器控制压缩器和加密器，并且根据第一传送命令向第一数据存储设备提供第一擦除指令，告知第一数据存储设备擦除原始数据。

公开(公告)号：US07453788B2

公开(公告)日：2008-11-18

申请号：US10760853

申请日：2004-01-20

申请人： Akihiro Yasuda ,  Yoshiaki Komma ,  Yasuhiro Tanaka ,  Yoshiyuki Shimizu

发明人： Akihiro Yasuda ,  Yoshiaki Komma ,  Yasuhiro Tanaka ,  Yoshiyuki Shimizu

IPC分类号： G11B7/135

CPC分类号： G11B7/1398 ,  G01C21/00 ,  G11B7/08 ,  G11B7/082 ,  G11B7/0956 ,  G11B7/1356 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/22

摘要： An optical head is provided that increases the light utilization efficiency and that can be adapted to high-speed recording and double-layer disks. A beam-shaping lens that shapes an elliptical beam emitted from a light source into a substantially circular beam has a pair of cylindrical surfaces that are curved in the same direction. The cylindrical surface that is closer to the light source is an aspherical surface, and the cylindrical surface that is closer to the light source is a spherical surface. Thus, an optical head is obtained, with which aberrations can be kept low, even when the beam-shaping magnifying power is about a factor 2.

摘要翻译： 提供一种光头，其提高光利用效率并且可以适用于高速记录和双层盘。 将从光源发射的椭圆形光束成形为大致圆形光束的光束整形透镜具有在相同方向上弯曲的一对圆柱形表面。 更靠近光源的圆柱形表面是非球面，更靠近光源的圆柱形表面是球形表面。 因此，即使当光束整形放大功率约为因子2时，也可以获得可以保持像差的光学头。

公开(公告)号：US07443778B2

公开(公告)日：2008-10-28

申请号：US10789309

申请日：2004-02-26

申请人： Yoshiaki Komma

发明人： Yoshiaki Komma

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： It is an object of the present invention to record to and reproduce different types of optical disks using light beams with different wavelengths. In an optical head device for recording to and reproducing high-density optical disks using an objective lens with a large NA, a sawtooth-shaped hologram is used for recording to and reproducing conventional optical disks such as DVDs. For blue light, a sawtooth height is the light path length 2λ, and second-order diffraction light is used. Red light generates first-order diffraction. The hologram is blazed and has convex lens function, and corrects chromatic aberration of the refractive lens. A relay lens is disposed between an infrared laser light source and the objective lens, and the light beam that is emitted from the infrared laser light source is substantially converged by the relay lens, and then, as it diverges once again, it is incident on the objective lens, which focuses the light beam into a spot on the recording surface of an optical disk after passing through an approximately 1.2 mm substrate.

摘要翻译： 本发明的目的是使用具有不同波长的光束来记录和再现不同类型的光盘。 在使用具有大NA的物镜记录和再现高密度光盘的光学头装置中，使用锯齿形全息图来记录和再现诸如DVD之类的常规光盘。 对于蓝光，锯齿高度是光路长度2λ，并且使用二次衍射光。 红光产生一阶衍射。 全息图闪耀并具有凸透镜功能，并且校正折射透镜的色差。 中继透镜设置在红外激光光源与物镜之间，从红外激光光源射出的光束基本上被中继透镜收敛，然后再次发散时，入射到 该物镜通过大约1.2mm的基板将光束聚焦在光盘的记录表面上的光斑中。

公开(公告)号：US20080163278A1

公开(公告)日：2008-07-03

申请号：US10590968

申请日：2005-04-18

申请人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Toshiyasu Tanaka

发明人： Kanji Wakabayashi ,  Yoshiaki Komma ,  Toshiyasu Tanaka

IPC分类号： G11B7/09 ,  G11B7/08 ,  G11B7/135

CPC分类号： G11B7/0932 ,  G11B7/0908 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/0941 ,  G11B7/0956 ,  G11B7/1359 ,  G11B7/1362 ,  G11B2007/0006

摘要： An optical head apparatus is made to be downsized while obtaining an sufficient driving force of an objective lens actuator. The optical head apparatus includes a first optical system including a first objective lens for focusing a light beam upon an optical disc; a second optical system including a second objective lens for focusing a light beam upon an optical disc having an information recording density smaller than the optical disc which the first optical system irradiates upon, the second objective lens having a numerical aperture smaller than the first objective lens; and an up-orienting prism including a first reflecting surface for deflecting a light beam to an optical axis of the first objective lens in the first optical system, and a second reflecting surface for deflecting a light beam to an optical axis of the second objective lens in the second optical system.

摘要翻译： 在获得物镜致动器的足够的驱动力的同时，使光头装置小型化。 光头装置包括：第一光学系统，包括用于将光束聚焦在光盘上的第一物镜; 第二光学系统，包括用于将光束聚焦在具有小于第一光学系统照射的光盘的信息记录密度的光盘上的第二物镜，第二物镜具有小于第一物镜的数值孔径 ; 以及向上定向棱镜，其包括用于将光束偏转到第一光学系统中的第一物镜的光轴的第一反射面和用于将光束偏转到第二物镜的光轴的第二反射面 在第二光学系统中。

公开(公告)号：US07333405B2

公开(公告)日：2008-02-19

申请号：US11386376

申请日：2006-03-22

申请人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

发明人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/08511 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

摘要翻译： 光盘装置具有光学拾取器，该光学拾取器包括会聚光学系统，该会聚光学系统具有用于会聚从激光光源发射的光束以在光盘上形成微点的物镜，以及用于控制球面像差的像差校正光学系统 并且对具有至少第一记录层和第二记录层的多层光盘执行信息记录或再现。 在光盘装置中，将微球的聚焦位置从第一层移动到第二层的操作之前开始将球面像差的校正量从适合于第一记录层的值改变到预定值的操作 层完成。 这允许在已经执行球面像差校正的状态下相对于第二记录层稳定地执行聚焦控制，从而防止聚焦控制由于不成功的层间跳跃而失败。

公开(公告)号：US20060181985A1

公开(公告)日：2006-08-17

申请号：US11386381

申请日：2006-03-22

申请人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

发明人： Yoshiaki Komma ,  Hidenori Wada ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/08511 ,  G11B7/1378 ,  G11B7/13925 ,  G11B7/13927 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An optical disk device is provided with an optical pickup that includes a convergent optical system having an objective lens for converging a light beam emitted from the laser light source to form a microspot on an optical disk and an aberration correcting optical system for controlling a spherical aberration of the convergent optical system, and performs information recording or reproduction with respect to a multi-layer optical disk having at least a first recording layer and a second recording layer. In the optical disk device, an operation of changing a correction quantity of the spherical aberration from a value adequate for the first recording layer to a predetermined value is started before an operation of moving a focus position of the microspot from the first layer to the second layer is completed. This allows a focus control to be performed stably with respect to the second recording layer in a state in which the spherical aberration correction already has been carried out, thereby preventing the focus control from failing due to an unsuccessful interlayer jump.

公开(公告)号：US07034980B2

公开(公告)日：2006-04-25

申请号：US11203914

申请日：2005-08-15

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G02F1/03 ,  G02F1/01 ,  G02F1/00 ,  G02F1/13 ,  G11B7/00

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US20050237900A1

公开(公告)日：2005-10-27

申请号：US10511867

申请日：2003-04-18

申请人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

发明人： Kousei Sano ,  Yoshiaki Komma ,  Hidenori Wada ,  Akihiro Yasuda

IPC分类号： G11B7/1353 ,  G02B5/18 ,  G02B5/32 ,  G11B7/00 ,  G11B7/085 ,  G11B7/135

CPC分类号： G11B7/1275 ,  G02B5/32 ,  G11B7/1353 ,  G11B2007/0006

摘要： The present invention provides a first light source (21) that emits light of a first wavelength, that at least either records onto or reproduces information from an information recording medium (30), a light source (22) that emits light of a second wavelength that records onto or reproduces information from an information recording medium (33), a light source (23) that emits light of a third wavelength that records onto or reproduces information from an information recording medium (23), focusing means, an optical element (28) that passes light of the first wavelength and diffracts light of the second and third wavelengths, wherein the optical element (28) is an optical element in which grooves are formed in a substrate, wherein the expression: 380 nm≦(n−1)×d≦420 nm is satisfied, where n is a refractive index of the substrate at a wavelength of 400 nm, and d (nm) is a depth per step of the grooves, and wherein the grooves are formed in two steps of depth d and depth 2d.

摘要翻译： 本发明提供了一种发射第一波长的光的第一光源（21），其至少从信息记录介质（30）记录信息或从信息记录介质再现信息，发射第二波长的光的光源（22） 从信息记录介质（33）记录信息或从信息记录介质（23）记录第三波长的光的光源（23），从信息记录介质（23），聚焦装置，光学元件（ 28），其通过第一波长的光并衍射第二和第三波长的光，其中光学元件（28）是其中在衬底中形成沟槽的光学元件，其中表达式： 描述=“在线公式”end =“lead”？> 380 nm <=（n-1）xd <= 420 nm <？in-line-formula description =“In-line Formulas”end =“tail”？ >，其中n是基底在波长处的折射率 400nm，并且d（nm）是凹槽的每个步骤的深度，并且其中凹槽以深度d和深度2d的两个步骤形成。

公开(公告)号：US20050135206A1

公开(公告)日：2005-06-23

申请号：US11031634

申请日：2005-01-07

申请人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

发明人： Hidenori Wada ,  Tetsuo Saimi ,  Daisuke Ogata ,  Seiji Nishino ,  Hiroaki Yamamoto ,  Shin-ichi Kadowaki ,  Yoshiaki Komma

IPC分类号： G02F1/00 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

CPC分类号： G11B7/13925 ,  G02F2203/18 ,  G11B7/0948 ,  G11B7/1369 ,  G11B7/13927 ,  G11B2007/0013

摘要： The invention presents an optical element with which an optical head can be configured, in which there is little deterioration of the correctional effect when the objective lens shifts, as well as an optical head and an optical recording/reproducing apparatus using such an optical element. The invention also presents a novel optical recording/reproducing apparatus and optical recording/reproducing method. The optical element, includes a first voltage application electrode 13, a first opposing electrode 17 arranged in opposition to the first voltage application electrode 13, and a first phase changing layer 15 arranged between the first voltage application electrode 13 and the first opposing electrode 17. By changing a voltage between the first voltage application electrode 13 and the first opposing electrode 17, a phase that converts plane waves into spherical waves is imparted on light that is incident on the first phase changing layer 15.

摘要翻译： 本发明提供了一种光学元件，通过该光学元件可以配置光学头，其中当物镜移动时，校正效果几乎没有劣化，以及使用这种光学元件的光学头和光学记录/再现装置。 本发明还提出了一种新颖的光学记录/再现装置和光学记录/再现方法。 光学元件包括第一电压施加电极13，与第一电压施加电极13相对布置的第一相对电极17和布置在第一施加电极13和第一相对电极17之间的第一相变层15。 通过改变第一电压施加电极13和第一相对电极17之间的电压，将入射到第一相变层15上的光转换成球面波的相位。

公开(公告)号：US06898169B2

公开(公告)日：2005-05-24

申请号：US10235625

申请日：2002-09-04

申请人： Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Kousei Sano

发明人： Shin-ichi Kadowaki ,  Yoshiaki Komma ,  Kousei Sano

IPC分类号： G11B7/09 ,  G11B7/00 ,  G11B7/0055 ,  G11B7/135

CPC分类号： G11B7/094 ,  G11B7/0055 ,  G11B7/0903 ,  G11B2007/0013

摘要： An optical pickup head device includes a diffraction grating for generating zero-order diffracted light and at least first-order diffracted light and provides a tracking error signal with a DPP method. The diffraction grating includes grating patterns with a nonuniform period or phase. The size of the first-order diffracted light converged on an optical recording medium is larger in the direction parallel to a tangent to the track than in the direction perpendicular to the tangent. P1/P0>PW2/PW1 is established, where PW1 represents the power that is required to record information on the optical recording medium, PW2 represents the maximum power that allows information recorded on the optical recording medium to be reproduced without being erased, P0 represents the light amount of the zero-order diffracted light converged on the optical recording medium, and P1 represents the light amount of the at least first-order diffracted light converged on the optical recording medium. This configuration makes it possible to detect a tracking error signal with reduced offset, even if a recordable optical recording medium having two information recording planes is used.

摘要翻译： 光拾取头装置包括用于产生零级衍射光和至少一级衍射光的衍射光栅，并提供具有DPP方法的跟踪误差信号。 衍射光栅包括具有不均匀周期或相位的光栅图案。 会聚在光学记录介质上的一级衍射光的尺寸在平行于轨道的切线的方向上大于在垂直于切线的方向上的尺寸。 P 1 / P 0> PW 2 / PW 1，其中PW 1表示在光学记录介质上记录信息所需的功率，PW 2表示允许记录在光学记录介质上的信息被再现的最大功率 不被擦除，P 0表示会聚在光记录介质上的零级衍射光的光量，P 1表示会聚在光记录介质上的至少一级衍射光的光量。 该配置使得即使使用具有两个信息记录平面的可记录光学记录介质，也可以检测具有减小的偏移的跟踪误差信号。