公开(公告)号：US20110076436A1

公开(公告)日：2011-03-31

申请号：US12882281

申请日：2010-09-15

申请人： Hiroyasu INOUE ,  Takashi KIKUKAWA ,  Koji MISHIMA ,  Yoshiaki KOMMA ,  Joji ANZAI ,  Jun NAKANO ,  Manami MIYAWAKI ,  Shigeki TAKAGAWA

发明人： Hiroyasu INOUE ,  Takashi KIKUKAWA ,  Koji MISHIMA ,  Yoshiaki KOMMA ,  Joji ANZAI ,  Jun NAKANO ,  Manami MIYAWAKI ,  Shigeki TAKAGAWA

IPC分类号： G06F17/10 ,  B32B3/02

CPC分类号： G11B7/24038 ,  Y10T428/21

摘要： An optical recording medium having three or more information recording layers reduces crosstalk caused by multi-reflected beams and improves signal quality. In the optical recording medium having three or more information recording layers, the refractive index of a plurality of intermediate layers disposed between adjacent information recording layers is greater than the refractive index of a cover layer disposed between a light incident surface and an information recording layer being the closest from the light incident surface.

摘要翻译： 具有三个或更多个信息记录层的光记录介质减少了由多反射光束引起的串扰并提高了信号质量。 在具有三个以上信息记录层的光记录介质中，设置在相邻信息记录层之间的多个中间层的折射率大于设置在光入射表面和信息记录层之间的覆盖层的折射率， 最靠近光入射面。

公开(公告)号：US20090141609A1

公开(公告)日：2009-06-04

申请号：US12276581

申请日：2008-11-24

申请人： Koji MISHIMA ,  Takashi KIKUKAWA ,  Hiroyasu INOUE ,  Hajime UTSUNOMIYA

发明人： Koji MISHIMA ,  Takashi KIKUKAWA ,  Hiroyasu INOUE ,  Hajime UTSUNOMIYA

IPC分类号： G11B7/00

CPC分类号： G11B7/263 ,  G11B7/24038

摘要： A multi-layered optical recording medium is provided of which the manufacturing costs is significantly reduced. The multi-layered optical recording medium has multiple information recording layers and at least two layers of the information recording layers have the same medium-side address information. This configuration allows for reducing the types of master stampers and thus reducing manufacturing costs.

摘要翻译： 提供了一种多层光学记录介质，其制造成本显着降低。 多层光学记录介质具有多个信息记录层，并且至少两层信息记录层具有相同的介质侧地址信息。 该配置允许减少主压模的类型，从而降低制造成本。

公开(公告)号：US20090016184A1

公开(公告)日：2009-01-15

申请号：US12171345

申请日：2008-07-11

申请人： Takashi KIKUKAWA ,  Koji Mishima

发明人： Takashi KIKUKAWA ,  Koji Mishima

IPC分类号： G11B20/00

CPC分类号： G11B7/1267 ,  G11B7/0045 ,  G11B2007/0013

摘要： A method for setting recording power of recording light, capable of an appropriate setting for a multilayer optical recording medium. The recording power of the recording light for an information recording layer of the multilayer optical recording medium to be irradiated with, is set by: evaluating an information recording layer to be evaluated for recording power when all the information recording layer(s) lying closer to a light incident surface than the information recording layer to be evaluated does is/are in a low transmittance state; evaluating the information recording layer to be evaluated for recording power when all the information recording layer(s) lying closer to the light incident surface than the information recording layer to be evaluated does is/are in a high transmittance state; and determining ground information for setting recording power, based on these values of the recording power.

摘要翻译： 一种用于设置记录光的记录功率的方法，其能够适用于多层光学记录介质的设置。 通过以下方式设定用于要照射的多层光学记录介质的信息记录层的记录光的记录功率：评估当所有信息记录层更靠近的所有信息记录层时评估记录功率的信息记录层 比待评估的信息记录层的光入射面处于低透射率状态; 当比要评估的信息记录层更靠近光入射面的信息记录层的所有信息记录层都处于高透射率状态时评估要评估的记录功率的信息记录层处于高透射率状态; 以及基于记录功率的这些值来确定用于设置记录功率的接地信息。

公开(公告)号：US20140169147A1

公开(公告)日：2014-06-19

申请号：US14103082

申请日：2013-12-11

申请人： Motohiro INOUE ,  Tomoki USHIDA ,  Atsuko KOSUDA ,  Takashi KIKUKAWA

发明人： Motohiro INOUE ,  Tomoki USHIDA ,  Atsuko KOSUDA ,  Takashi KIKUKAWA

IPC分类号： G11B7/09

CPC分类号： G11B7/0903 ,  G11B7/09 ,  G11B7/1267 ,  G11B7/14 ,  G11B7/24018 ,  G11B7/2403 ,  G11B7/24038 ,  G11B7/2405 ,  G11B7/24079

摘要： An optical recording medium includes a recording and reading layer that is previously staked or formed afterword and has no concavo-convex pattern for tracking control, and a servo layer in which a concavo-convex pattern or a groove for tracking control is formed. Information can be recorded in the recording and reading layer while tracking is performed using the servo layer.

摘要翻译： 光记录介质包括预先被放样或形成的后记并且没有用于跟踪控制的凹凸图案的记录和读取层，以及形成用于跟踪控制的凹凸图案或凹槽的伺服层。 当使用伺服层执行跟踪时，信息可以被记录在记录和读取层中。

公开(公告)号：US20120069727A1

公开(公告)日：2012-03-22

申请号：US13307040

申请日：2011-11-30

申请人： Takashi KIKUKAWA

发明人： Takashi KIKUKAWA

IPC分类号： G11B27/36 ,  G11B7/1374

CPC分类号： G11B20/10009 ,  G11B20/10055 ,  G11B20/10101 ,  G11B20/1012 ,  G11B20/10481 ,  G11B2220/2537

摘要： A method for evaluating a read signal obtained by irradiating a medium with a laser beam through an objective lens and reading data from the reflected laser beam by a PRML detection method is provided. The method includes: a sampling step of sampling the data obtained from the reflected laser beam at clock timings to obtain sampled values; and a step of, when a constraint length of a PR class in the PRML detection method is an even number, computing an intermediate sampled value for evaluation using at least adjacent two of the sampled values arranged in the order sampled at the clock timings. The provided method is an objective evaluation method when the PRML detection method is used, whereby the selection of a recording medium and a reading apparatus is facilitated.

摘要翻译： 提供了一种用于评估通过用物镜照射激光束的介质并通过PRML检测方法从反射的激光束读取数据而获得的读取信号的方法。 该方法包括：采样步骤，在时钟定时对从反射激光束获得的数据进行采样，以获得采样值; 以及当PRML检测方法中的PR类的约束长度是偶数时，使用在时钟定时采样的顺序中排列的至少相邻的两个采样值来计算用于评估的中间采样值的步骤。 所提供的方法是当使用PRML检测方法时的客观评价方法，由此便于对记录介质和读取装置的选择。

公开(公告)号：US20090135711A1

公开(公告)日：2009-05-28

申请号：US12352304

申请日：2009-01-12

申请人： Takashi KIKUKAWA ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

发明人： Takashi KIKUKAWA ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

IPC分类号： G11B7/00

CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。

公开(公告)号：US20120102510A1

公开(公告)日：2012-04-26

申请号：US13277465

申请日：2011-10-20

申请人： Takashi KIKUKAWA ,  Motohiro Inoue ,  Atsuko Kosuda ,  Tomoki Ushida ,  Hideki Hirata

发明人： Takashi KIKUKAWA ,  Motohiro Inoue ,  Atsuko Kosuda ,  Tomoki Ushida ,  Hideki Hirata

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B2007/24314 ,  G11B2007/2432

摘要： Simple design of a multilayer optical recording medium is achieved while suppressing interlayer crosstalk and confocal crosstalk in the multilayer optical recording medium. Simple recording and reading control by a recording and reading unit is also achieved. The multilayer optical recording medium includes at least three or more recording and reading layers deposited one above the other with intermediate layers interposed therebetween, and information can be read by light irradiation from the layers. The intermediate layers have film thicknesses of two types or less, and all the recording and reading layers except the recording and reading layer farthest from a light incident surface have substantially the same optical constant.

摘要翻译： 在多层光学记录介质中抑制层间串扰和共焦串扰的同时实现多层光学记录介质的简单设计。 也可以通过记录和读取单元进行简单的记录和读取控制。 多层光学记录介质包括至少三个或更多个记录和读取层之间沉积的中间层，并且可以通过来自层的光照射来读取信息。 中间层具有两种或更少的膜厚度，并且离光入射表面最远的记录和读取层以外的所有记录和读取层具有基本上相同的光学常数。

公开(公告)号：US20110205867A1

公开(公告)日：2011-08-25

申请号：US13032258

申请日：2011-02-22

申请人： Takashi KIKUKAWA ,  Atsuko KOSUDA ,  Motohiro INOUE ,  Hideki HIRATA

发明人： Takashi KIKUKAWA ,  Atsuko KOSUDA ,  Motohiro INOUE ,  Hideki HIRATA

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： In a multilayer optical recording medium, it is an object to suppress generation of crosstalk while reducing an interlayer distance of recording and reading layers. In an optical recording medium including three or more recording and reading layers, a first distance, and a second distance greater than the first distance by 3 μm or more are alternately defined as interlayer distances of recording and reading layers.

摘要翻译： 在多层光记录介质中，其目的是抑制串扰的产生，同时减少记录和读取层的层间距离。 在包括三个或更多个记录和读取层的光学记录介质中，第一距离和大于第一距离3μm或更大的第二距离交替地被定义为记录和读取层的层间距离。

公开(公告)号：US20090122693A1

公开(公告)日：2009-05-14

申请号：US12269199

申请日：2008-11-12

申请人： Takashi KIKUKAWA

发明人： Takashi KIKUKAWA

IPC分类号： G11B7/26

CPC分类号： G11B7/24038

摘要： An optical recording medium of improved recording and reading characteristics, having both a read-only information recording layer and an information recording layer. The optical recording medium includes information recording layers capable of recording and reading by irradiation of laser light having a wavelength λ of 400 to 410 nm through an optical system having a numerical aperture NA of 0.8 to 0.9. In this medium, the information recording layers include at least a read-only information layer having information recorded in advance and an information recording layer different from the read-only information recording layer, the read-only information recording layer being capable of information recording of write-once type or rewritable type. The read-only information recording layer is stacked closest to a light incident surface of the laser light.

摘要翻译： 具有改善的记录和读取特性的光学记录介质，其具有只读信息记录层和信息记录层。 光记录介质包括能够通过具有数值孔径NA为0.8至0.9的光学系统通过用波长λ为400至410nm的激光的照射进行记录和读取的信息记录层。 在该介质中，信息记录层至少包括具有预先记录的信息的只读信息层和与只读信息记录层不同的信息记录层，只读信息记录层能够进行信息记录 一次写入型或可重写型。 只读信息记录层被堆叠成最靠近激光的光入射表面。

公开(公告)号：US20120201118A1

公开(公告)日：2012-08-09

申请号：US13368573

申请日：2012-02-08

申请人： Atsuko KOSUDA ,  Takashi KIKUKAWA ,  Tomoki USHIDA ,  Motohiro INOUE

发明人： Atsuko KOSUDA ,  Takashi KIKUKAWA ,  Tomoki USHIDA ,  Motohiro INOUE

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/2432 ,  G11B2007/25706 ,  G11B2007/25715

摘要： An object of the present invention is to increase the number of stacked layers in a multilayer optical recording medium while simplifying the design of the multilayer optical recording medium.Provided is a multilayer optical recording medium 10 including at least four recording and reading layers from which information can be reproduced by light irradiation, the layers stacked through intermediate layers. The multilayer optical recording medium 10 includes the plurality of recording and reading layers that are continuous in order of stacking and includes at least one recording and reading layer group in which reflectance in a stacked state decreases from a near side of a light incident surface to a far side. A single-layer reflectance of the nearest recording and reading layer is set to 0.2% or more and less than 2.0%, and a light transmittance improvement process is applied to the light incident surface.

摘要翻译： 本发明的一个目的是在简化多层光学记录介质的设计的同时，增加多层光学记录介质中层叠层的数量。 提供了包括至少四个记录层和读取层的多层光学记录介质10，通过光照射可以再现信息，层叠在中间层上。 多层光学记录介质10包括依次层叠连续的多个记录和读取层，并且包括至少一个记录和读取层组，其中堆叠状态的反射率从光入射表面的近侧减小到 远端。 最近的记录和读取层的单层反射率设定为0.2％以上且小于2.0％，对光入射面施加透光率提高处理。