公开(公告)号：US07342867B2

公开(公告)日：2008-03-11

申请号：US10509097

申请日：2003-12-02

申请人： Tatsuo Ito ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino

发明人： Tatsuo Ito ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino

IPC分类号： G11B7/135 ,  G11B7/00

CPC分类号： G11B7/13927 ,  G11B7/0948 ,  G11B7/1267 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0013 ,  G11B2007/13727

摘要： An object of the present invention is to acquire optimum recording characteristics of an optical recoding medium having multiple data layers, with respect to each of the multiple data layers without increasing learning time required for learning a relation between aberration amount and optimum recording compensation with respect to each of the multiple data layers. The present invention includes a wavefront converter which is driven in such a manner as to reduce the aberration amount detected by an aberration detector. An output controller holds learned data as to the relation between the driving amount of the wavefront converter and the output of a light source, and controls the output of the light source based on the driving amount of the wavefront converter and the learned data.

摘要翻译： 本发明的目的是为了获得关于多个数据层中的每一个的多个数据层的光学记录介质的最佳记录特性，而不增加学习像差量和最佳记录补偿之间的关系所需要的学习时间 每个多个数据层。 本发明包括以减少由像差检测器检测到的像差量的方式驱动的波前转换器。 输出控制器保持关于波前转换器的驱动量与光源的输出之间的关系的学习数据，并且基于波前转换器的驱动量和学习数据来控制光源的输出。

公开(公告)号：US07193955B2

公开(公告)日：2007-03-20

申请号：US10802464

申请日：2004-03-17

申请人： Tatsuo Ito ,  Teruhiro Shiono ,  Seiji Nishino ,  Hiroaki Yamamoto

发明人： Tatsuo Ito ,  Teruhiro Shiono ,  Seiji Nishino ,  Hiroaki Yamamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/133 ,  G11B2007/0013

摘要： An optical head device includes: an optical element collecting light reflected from a reproduction information layer (a target information layer in an optical information recording medium) and light reflected from information layers adjacent to the reproduction information layer at different positions; a light receiving element obtaining a detection signal from the reflected light collected by this optical element; and arithmetic circuitry obtaining a reproduction signal from this detection signal. The light receiving element includes: a first light receiving portion detecting a first detection signal from light containing the light reflected from the reproduction information layer; a second light receiving portion detecting a second detection signal from light reflected from a first adjacent information layer located more distant from the condensing lens than the reproduction information layer; and a third light receiving portion detecting a third detection signal from light reflected from a second adjacent information layer located closer to the condensing lens than the reproduction information layer. The arithmetic circuitry uses constants K and L determined depending on spaces between the reproduction information layer and the adjacent information layers, so as to subtract the K-times second detection signal and the L-times third detection signal from the first detection signal.

摘要翻译： 光头装置包括：收集从再现信息层（光信息记录介质中的目标信息层）反射的光的光学元件和在不同位置处与再现信息层相邻的信息层反射的光; 光接收元件，从由该光学元件收集的反射光获得检测信号; 以及算术电路，从该检测信号获得再现信号。 光接收元件包括：第一光接收部分，从包含从再现信息层反射的光的光检测第一检测信号; 第二光接收部分，从与再现信息层相比位于比聚光透镜更远的第一相邻信息层反射的光中检测第二检测信号; 以及第三光接收部分，从与再现信息层相比更靠近聚光透镜的第二相邻信息层反射的光检测第三检测信号。 算术电路使用根据再现信息层和相邻信息层之间的空格确定的常数K和L，以便从第一检测信号中减去K倍的第二检测信号和L倍的第三检测信号。

公开(公告)号：US07656777B2

公开(公告)日：2010-02-02

申请号：US10516220

申请日：2003-05-26

申请人： Hiroaki Yamamoto ,  Teruhiro Shiono ,  Tatsuo Ito ,  Seiji Nishino ,  Sadao Mizuno

发明人： Hiroaki Yamamoto ,  Teruhiro Shiono ,  Tatsuo Ito ,  Seiji Nishino ,  Sadao Mizuno

IPC分类号： G11B7/24

CPC分类号： G11B7/243 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/257

摘要： An optical recording medium which is a multilayer optical recording medium including a plurality of recording layers and records or reproduces information by the irradiation of light having a wavelength of λ0. At least one recording layer out of a plurality of recording layers includes a variable absorption film. The variable absorption film contains a material in which an electron energy has a band structure, and the absorption end of an absorption spectrum moves toward a longer wavelength side with a rise in temperature when light is absorbed by transition between electron bands, has a first absorptance to light having a wavelength of λ0 when a film temperature is a first temperature (application environment temperature), and has a second absorptance higher than the first absorptance to light having a wavelength of λ0 when a film temperature is a second temperature higher than the first temperature.

摘要翻译： 一种光记录介质，其是包括多个记录层的多层光记录介质，并且通过照射波长为λ0的光记录或再现信息。 多个记录层中的至少一个记录层包括可变吸收膜。 可变吸收膜含有电子能量具有带状结构的材料，并且当光被电子带之间的过渡吸收时，吸收光谱的吸收端随着温度升高而向较长波长侧移动，具有第一吸收率 当膜温度为第一温度（施加环境温度）时具有λ0的波长的光，并且当膜温度比第一温度高的第一温度时，具有比第一吸光度高于具有波长λ0的光的第二吸收率 温度。

公开(公告)号：US20050207328A1

公开(公告)日：2005-09-22

申请号：US10516220

申请日：2003-05-26

申请人： Hiroaki Yamamoto ,  Teruhiro Shiono ,  Tatsuo Ito ,  Seiji Nishino

发明人： Hiroaki Yamamoto ,  Teruhiro Shiono ,  Tatsuo Ito ,  Seiji Nishino

IPC分类号： G11B7/004 ,  G11B7/0045 ,  G11B7/243 ,  G11B7/26

CPC分类号： G11B7/243 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/257

摘要： An optical recording medium which is a multilayer optical recording medium including a plurality of recording layers and records or reproduces information by the irradiation of light having a wavelength of λ0. At least one recording layer out of a plurality of recording layers includes a variable absorption film. The variable absorption film contains a material in which an electron energy has a band structure, and the absorption end of an absorption spectrum moves toward a longer wavelength side with a rise in temperature when light is absorbed by transition between electron bands, has a first absorptance to light having a wavelength of λ0 when a film temperature is a first temperature (application environment temperature), and has a second absorptance higher than the first absorptance to light having a wavelength of λ0 when a film temperature is a second temperature higher than the first temperature.

摘要翻译： 一种光记录介质，其是包括多个记录层的多层光记录介质，并且通过照射波长为λ0的光记录或再现信息。 多个记录层中的至少一个记录层包括可变吸收膜。 可变吸收膜含有电子能量具有带状结构的材料，并且当光被电子带之间的过渡吸收时，吸收光谱的吸收端随着温度升高而向较长波长侧移动，具有第一吸收率 当膜温度为第一温度（施加环境温度）时具有λ0的波长的光，并且当膜温度比第一温度高的第一温度时，具有比第一吸收率高于具有波长λ0的光的第二吸收率 温度。

公开(公告)号：US20050174920A1

公开(公告)日：2005-08-11

申请号：US10509097

申请日：2003-12-02

申请人： Tatsuo Ito ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino

发明人： Tatsuo Ito ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC分类号： G11B7/13927 ,  G11B7/0948 ,  G11B7/1267 ,  G11B7/1369 ,  G11B7/1378 ,  G11B2007/0013 ,  G11B2007/13727

摘要： The present invention relates to an optical head device, an optical recording device, and an optical recording method, and an object of the present invention is to enable to acquire optimum recording characteristics of an optical recoding medium having multiple data layers, with respect to each of the multiple data layers without increasing learning time required for learning a relation between aberration amount and optimum recording compensation with respect to each of the multiple data layers. To accomplish this object, the optical head device, the optical recording device, and the optical recording method of the present invention are constructed such that the wavefront converting means 4 is driven in such a manner as to reduce the aberration amount detected by the aberration detecting means 12. The output controlling means 13 holds learned data as to the relation between the driving amount of the wavefront converting means 4 and the output of the light source 1, and controls the output of the light source 1 based on the driving amount of the wavefront converting means 4 and the learned data.

摘要翻译： 光学头装置，光学记录装置和光学记录方法技术领域本发明涉及一种光学头装置，光学记录装置和光学记录方法，本发明的目的是为了获得具有多个数据层的光学记录介质的最佳记录特性， 的多个数据层，而不增加关于每个多个数据层的像差量和最佳记录补偿之间的关系所需的学习时间。 为了实现该目的，本发明的光头装置，光学记录装置和光学记录方法被构造成使得波前转换装置4以​​减少由像差检测检测到的像差量的方式被驱动 输出控制装置13保存关于波前转换装置4的驱动量与光源1的输出之间的关系的学习数据，并且基于光源1的驱动量来控制光源1的输出 波前转换装置4和学习数据。

公开(公告)号：US20060246375A1

公开(公告)日：2006-11-02

申请号：US10558122

申请日：2004-05-27

申请人： Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino ,  Tatsuo Ito

发明人： Teruhiro Shiono ,  Hiroaki Yamamoto ,  Seiji Nishino ,  Tatsuo Ito

IPC分类号： G11B7/24

CPC分类号： G11B7/245 ,  B82Y10/00 ,  B82Y30/00 ,  G11B7/00455 ,  G11B7/246 ,  G11B7/25 ,  G11B7/251 ,  G11B7/2538 ,  G11B2007/0013 ,  Y10T428/21

摘要： An information recording medium is provided that includes a recording portion (3), which is irradiated with a recording light or a reproducing light so that information is recorded or reproduced thereto or therefrom. The recording portion (3) contains a first phosphor and a photon-mode photosensitive material. The first phosphor has a property of absorbing a first light having a wavelength of λ1/n and then emitting a second light having a wavelength longer than that of the first light, where λ1 is a wavelength of the recording light. The photosensitive material absorbs the second light and then exhibits a change in an optical constant thereof. A n-photon absorption sensitivity of the first phosphor with respect to the recording light is greater than a n-photon absorption sensitivity of the photosensitive material with respect to the recording light, where n is an integer not less than 2.

摘要翻译： 提供了一种信息记录介质，其包括用记录光或再现光照射以便信息被记录或再现的记录部分（3）。 记录部分（3）包含第一荧光体和光子模式感光材料。 第一荧光体具有吸收波长为λ1/ N / n的第一光的性质，然后发射具有比第一光的波长更长的波长的第二光，其中λ1 < / SUB>是记录光的波长。 感光材料吸收第二光，然后呈现其光学常数的变化。 第一荧光体相对于记录光的n光子吸收灵敏度大于感光材料相对于记录光的n光子吸收灵敏度，其中n是不小于2的整数。

公开(公告)号：US20060120256A1

公开(公告)日：2006-06-08

申请号：US10539666

申请日：2004-02-25

申请人： Seiji Nishino ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Tatsuo Ito

发明人： Seiji Nishino ,  Teruhiro Shiono ,  Hiroaki Yamamoto ,  Tatsuo Ito

IPC分类号： G11B7/24

CPC分类号： B82Y10/00 ,  G11B7/2403 ,  G11B7/24038 ,  G11B7/24067

摘要： An optical information recording carrier comprising a substrate and at least one recording film arranged on the substrate is disclosed. Information is recorded on the recording film through irradiation with a recording light having a predetermined wavelength (λ). The recording film is composed of a heat generating layer and at least one dielectric layer arranged in contact with the heat generating layer. The heat generating layer and the dielectric layer are substantially transparent to the recording light with wavelength (λ), and are respectively formed to have a predetermined thickness and a predetermined refractive index so that the field intensity of the recording light becomes maximum at the interface between the heat generating layer and the dielectric layer.

摘要翻译： 公开了一种包括基板和布置在基板上的至少一个记录膜的光学信息记录载体。 信息通过用具有预定波长（λ）的记录光照射而记录在记录膜上。 记录膜由发热层和布置成与发热层接触的至少一个电介质层组成。 发热层和电介质层对具有波长（λ）的记录光基本上是透明的，分别形成为具有预定厚度和预定折射率，使得记录光的场强在第 发热层和电介质层。

公开(公告)号：US06400671B2

公开(公告)日：2002-06-04

申请号：US09897811

申请日：2001-07-02

申请人： Hideki Hayashi ,  Tatsuo Ito ,  Yoshiaki Komma ,  Hiroaki Yamamoto ,  Seiji Nishino

发明人： Hideki Hayashi ,  Tatsuo Ito ,  Yoshiaki Komma ,  Hiroaki Yamamoto ,  Seiji Nishino

IPC分类号： G11B700

CPC分类号： G11B7/131 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0006

摘要： In a photodetector, the minimum size of the photodetection area for detecting a focus error signal from a light beam on the inner radius side of a hologram is made smaller than the minimum diameter of diffracted light beam spots (30, 31) for recording and reproduction, and when a CD is reproduced, a light beam close to the optical axis is made to significantly contribute to the focus error signal and the minimum size of the photodetection area for detecting the focus error signal from a light beam from the peripheral side of the hologram is made larger than the minimum diameter of diffracted light beam spots (130, 131) for recording and reproduction, whereby the focus error signal is made equal to the normal focus error signal when a DVD is reproduced, so that the focus offset variation caused when the base material thickness varies can be reduced.

摘要翻译： 在光电检测器中，将用于检测来自全息图的内半径侧上的光束的聚焦误差信号的光检测区域的最小尺寸设定为小于用于记录和再现的衍射光束点（30,31）的最小直径 ，并且当再现CD时，使靠近光轴的光束显着有助于聚焦误差信号和用于从来自所述光轴的外围侧的光束检测聚焦误差信号的光检测区域的最小尺寸 使全息图大于用于记录和再现的衍射光束点（130,131）的最小直径，由此当再现DVD时使聚焦误差信号等于正常聚焦误差信号，使得聚焦偏移变化引起 当基材厚度变化时可以减少。

公开(公告)号：US06278670B1

公开(公告)日：2001-08-21

申请号：US09427826

申请日：1999-10-27

申请人： Hideki Hayashi ,  Tatsuo Ito ,  Yoshiaki Komma ,  Hiroaki Yamamoto ,  Seiji Nishino

发明人： Hideki Hayashi ,  Tatsuo Ito ,  Yoshiaki Komma ,  Hiroaki Yamamoto ,  Seiji Nishino

IPC分类号： G11B713

CPC分类号： G11B7/131 ,  G11B7/0912 ,  G11B7/0943 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0006

摘要： In a photodetector, the minimum size of the photodetection area for detecting a focus error signal from a light beam on the inner radius side of a hologram is made smaller than the minimum diameter of diffracted light beam spots (30, 31) for recording and reproduction, and when a CD is reproduced, a light beam close to the optical axis is made to significantly contribute to the focus error signal and the minimum size of the photodetection area for detecting the focus error signal from a light beam from the peripheral side of the hologram is made larger than the minimum diameter of diffracted light beam spots (130, 131) for recording and reproduction, whereby the focus error signal is made equal to the normal focus error signal when a DVD is reproduced, so that the focus offset variation caused when the base material thickness varies can be reduced.

摘要翻译： 在光电检测器中，将用于检测来自全息图的内半径侧上的光束的聚焦误差信号的光检测区域的最小尺寸设定为小于用于记录和再现的衍射光束点（30,31）的最小直径 ，并且当再现CD时，使靠近光轴的光束显着有助于聚焦误差信号和用于从来自所述光轴的外围侧的光束检测聚焦误差信号的光检测区域的最小尺寸 使全息图大于用于记录和再现的衍射光束点（130,131）的最小直径，由此当再现DVD时使聚焦误差信号等于正常聚焦误差信号，使得聚焦偏移变化引起 当基材厚度变化时可以减少。

公开(公告)号：US5920418A

公开(公告)日：1999-07-06

申请号：US492894

申请日：1995-06-20

申请人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

发明人： Teruhiro Shiono ,  Michihito Ueda ,  Tatsuo Ito ,  Kazuo Yokoyama ,  Shinichi Mizuguchi

IPC分类号： G03B9/36 ,  G01J5/08 ,  G02B5/18 ,  G02B26/08 ,  G03B9/18 ,  H04N5/74 ,  G02F1/13

CPC分类号： G01J5/02 ,  G01J5/0205 ,  G01J5/0235 ,  G01J5/024 ,  G01J5/04 ,  G01J5/045 ,  G01J5/08 ,  G01J5/0803 ,  G01J5/0806 ,  G01J5/0831 ,  G01J5/084 ,  G01J5/0893 ,  G02B26/0808 ,  G02B5/1828 ,  G03B9/18 ,  H04N5/7416

摘要： The diffractive optical modulator of the invention includes: a plate having a portion functioning as a first electrode; a spacer layer formed on the plate; and a grating consisting of a plurality of beams having a portion functioning as a second electrode, both ends of the beams being supported on the spacer layer. In the diffractive optical modulator, by adjusting a voltage applied between the first electrode and the second electrode, a distance between the beams and the plate is varied, thereby controlling the diffraction efficiency. An insulating layer is further provided between the plate and the plurality of beams.