公开(公告)号：US07570566B2

公开(公告)日：2009-08-04

申请号：US11504580

申请日：2006-08-16

申请人： Toshihiro Sugaya ,  Masato Otsuka ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Hisashi Yamada

发明人： Toshihiro Sugaya ,  Masato Otsuka ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Hisashi Yamada

IPC分类号： G11B3/74

CPC分类号： G11B7/26 ,  G11B7/00736 ,  G11B7/24038 ,  G11B19/127 ,  G11B19/128 ,  G11B19/16 ,  G11B2007/0013

摘要： According to one embodiment, an optical disc is the following the distance between a light incidence plane and the first recording layer is a minimum of 550 μm. The distance between the first and the third recording layer is a maximum of 72 μm. The distance between the second and the third recording layer is a minimum of 15 μm. The distance between the first and the second recording layer is about 31 to 40 μm. The reflectivities of the first and the second recording layer with respect to the first laser beam range from 18 to 27%, and the ratio therebetween is about 1.1 or less. The reflectivity of the third recording layer is below about 6%. The areal recording density of the third recording layer is three times or more as high as that of the first recording layer and the second recording layer.

摘要翻译： 根据一个实施例，光盘之后，光入射平面与第一记录层之间的距离最小为550μm。 第一和第三记录层之间的距离最大为72μm。 第二和第三记录层之间的距离最小为15μm。 第一和第二记录层之间的距离约为31至40μm。 第一记录层和第二记录层相对于第一激光束的反射率为18〜27％，其比例为约1.1以下。 第三记录层的反射率低于约6％。 第三记录层的面积记录密度是第一记录层和第二记录层的面积记录密度的三倍以上。

公开(公告)号：US20070042294A1

公开(公告)日：2007-02-22

申请号：US11504580

申请日：2006-08-16

申请人： Toshihiro Sugaya ,  Masato Otsuka ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Hisashi Yamada

发明人： Toshihiro Sugaya ,  Masato Otsuka ,  Naomasa Nakamura ,  Nobuhisa Yoshida ,  Hisashi Yamada

IPC分类号： G11B7/24 ,  G11B3/70 ,  G11B7/00

CPC分类号： G11B7/26 ,  G11B7/00736 ,  G11B7/24038 ,  G11B19/127 ,  G11B19/128 ,  G11B19/16 ,  G11B2007/0013

摘要： According to one embodiment, an optical disc is the following the distance between a light incidence plane and the first recording layer is a minimum of 550 μm. The distance between the first and the third recording layer is a maximum of 72 μm. The distance between the second and the third recording layer is a minimum of 15 μm. The distance between the first and the second recording layer is about 31 to 40 μm. The reflectivities of the first and the second recording layer with respect to the first laser beam range from 18 to 27%, and the ratio therebetween is about 1.1 or less. The reflectivity of the third recording layer is below about 6%. The areal recording density of the third recording layer is three times or more as high as that of the first recording layer and the second recording layer.

摘要翻译： 根据一个实施例，光盘之后，光入射平面与第一记录层之间的距离最小为550μm。 第一和第三记录层之间的距离最大为72μm。 第二和第三记录层之间的距离最小为15μm。 第一和第二记录层之间的距离约为31至40μm。 第一记录层和第二记录层相对于第一激光束的反射率为18〜27％，其比例为约1.1以下。 第三记录层的反射率低于约6％。 第三记录层的面积记录密度是第一记录层和第二记录层的面积记录密度的三倍以上。

公开(公告)号：US20100135436A1

公开(公告)日：2010-06-03

申请号：US12626338

申请日：2009-11-25

申请人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

发明人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC分类号： H04L27/04

CPC分类号： G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

摘要翻译： 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US20060120258A1

公开(公告)日：2006-06-08

申请号：US11292140

申请日：2005-12-02

申请人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

发明人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B7/0053 ,  G11B7/0945 ,  G11B7/1275

摘要： This invention enables a single disc to deal with HD DVD information and DVD information. An optical disc according to the present invention is basically specified by the following items (1) the optical disc is a single-sided dual layer optical disc, (2) the distance in the light transmission layer from an incidence plane to a first recording layer is 578 to (578+2p) μm (2p is the maximum value of substrate thickness accuracy), (3) the distance in the space layer between the first recording layer and a second recording layer is (62−2p−2q) to (62−2p) μm (2q is the maximum value of space layer thickness accuracy), and (4) the areal recording density of the first recording layer is three times or more as high as that of the second recording layer.

摘要翻译： 本发明使得单个盘能够处理HD DVD信息和DVD信息。 根据本发明的光盘基本上由以下项目（1）指定：光盘是单面双层光盘，（2）光透射层中从入射面到第一记录层的距离 是578〜（578 + 2p）mum（2p是基板厚度精度的最大值），（3）第一记录层与第二记录层之间的空间层的距离为（62-2p-2q）〜（ 62-2p）mum（2q是空间层厚度精度的最大值），（4）第一记录层的面积记录密度是第二记录层的面积记录密度的三倍以上。

公开(公告)号：US07949071B2

公开(公告)日：2011-05-24

申请号：US12626338

申请日：2009-11-25

申请人： Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

发明人： Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC分类号： H03C1/52 ,  G06K9/00

CPC分类号： G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

摘要翻译： 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US20080304401A1

公开(公告)日：2008-12-11

申请号：US11969732

申请日：2008-01-04

申请人： Hideo Ando ,  Hisashi Yamada ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Kazuo Watabe ,  Nobuaki Kaji ,  Masahiko Mawatari ,  Nobuhisa Yoshida ,  Koichi Nagai

发明人： Hideo Ando ,  Hisashi Yamada ,  Seiji Morita ,  Koji Takazawa ,  Naomasa Nakamura ,  Kazuo Watabe ,  Nobuaki Kaji ,  Masahiko Mawatari ,  Nobuhisa Yoshida ,  Koichi Nagai

IPC分类号： G11B3/70

CPC分类号： G11B7/24079 ,  G11B7/00736 ,  G11B7/00745 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00253 ,  G11B20/00449 ,  G11B20/00492 ,  G11B20/00869 ,  G11B2220/215 ,  G11B2220/2562

摘要： According to one embodiment, an optical information recording medium includes pre-grooves with an irregular shape and lands each of which is sandwiched between the pre-grooves adjacent to each other, where the pre-grooves and lands are defined on an interface between a recording layer and a light reflection layer in a recording film, where the recording film includes a light reflectivity that enables reproduction with light of 650±5 nm, the recording layer includes a recording sensitivity with respect to light by a wavelength shorter than 650±5 nm, and a recording mark can be formed on the pre-groove by using light with a wavelength shorter than 650±5 nm.

摘要翻译： 根据一个实施例，光学信息记录介质包括具有不规则形状的预凹槽，每个凹槽被夹在彼此相邻的预凹槽之间，其中预凹槽和凹槽被界定在记录 层和光反射层，其中记录膜包括能够以650±5nm的光再现的光反射率，记录层包括相对于光的记录灵敏度小于650±5nm的波长 并且可以通过使用波长短于650±5nm的光，在预制槽上形成记录标记。

公开(公告)号：US07821908B2

公开(公告)日：2010-10-26

申请号：US11289303

申请日：2005-11-30

申请人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

发明人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

IPC分类号： G11B7/24 ,  G11B7/20 ,  G11B11/00

CPC分类号： G11B19/127 ,  G11B7/00736 ,  G11B7/24038 ,  G11B2007/0013

摘要： A single disc is configured to deal with both HD DVD information and DVD information. This invention has the following basic elements (1) a single-sided dual layer optical disc where a light transmission layer, a first recording layer accessed with a first laser beam, an space layer, and a second recording layer accessed with a second laser beam are arranged in that order in the direction in which a laser beam enters, (2) the areal recoding density of the second recording layer is three times or more that of the first recording layer, (3) information indicating that the second recording layer has been formed is formed in the first recording layer, and (4) information indicating that the first recording layer has been formed is formed in the second recording layer.

摘要翻译： 单个光盘被配置为处理HD DVD信息和DVD信息。 本发明具有以下基本要素（1）单面双层光盘，其中光传输层，第一激光束访问的第一记录层，空间层和第二激光束访问的第二记录层 按照激光入射方向的顺序排列，（2）第二记录层的面编码密度是第一记录层的三倍以上，（3）表示第二记录层的信息 形成在第一记录层中，和（4）表示形成第一记录层的信息形成在第二记录层中。

公开(公告)号：US20060114808A1

公开(公告)日：2006-06-01

申请号：US11289303

申请日：2005-11-30

申请人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

发明人： Toshihiro Sugaya ,  Hisashi Yamada ,  Masato Otsuka

IPC分类号： G11B7/24

CPC分类号： G11B19/127 ,  G11B7/00736 ,  G11B7/24038 ,  G11B2007/0013

摘要： A single disc is configured to deal with both HD DVD information and DVD information. This invention has the following basic elements (1) a single-sided dual layer optical disc where a light transmission layer, a first recording layer accessed with a first laser beam, an space layer, and a second recording layer accessed with a second laser beam are arranged in that order in the direction in which a laser beam enters, (2) the areal recoding density of the second recording layer is three times or more that of the first recording layer, (3) information indicating that the second recording layer has been formed is formed in the first recording layer, and (4) information indicating that the first recording layer has been formed is formed in the second recording layer.

摘要翻译： 单个光盘被配置为处理HD DVD信息和DVD信息。 本发明具有以下基本要素（1）单面双层光盘，其中光传输层，第一激光束访问的第一记录层，空间层和第二激光束访问的第二记录层 按照激光入射方向的顺序排列，（2）第二记录层的面编码密度是第一记录层的三倍以上，（3）表示第二记录层的信息 形成在第一记录层中，和（4）表示形成第一记录层的信息形成在第二记录层中。

公开(公告)号：US5250796A

公开(公告)日：1993-10-05

申请号：US942463

申请日：1992-09-09

申请人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura

发明人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/125 ,  G11B7/135 ,  H01S5/022 ,  H01S5/0683 ,  H04N5/85 ,  H04N5/911 ,  G01J1/32

CPC分类号： G11B7/126 ,  H04N5/911 ,  H04N5/85

摘要： An optical disk apparatus includes a semiconductor laser for emitting a light beam, and an automatic power control or APC circuit for driving the laser. A compound prism structure is optically coupled to the laser in an optical head section, and defines a first optical path for causing a front laser light to be projected onto a rotating optical disk and guiding a reflected light therefrom toward a first photodetector, and a second optical path for guiding a part of the reflected light toward a second photodetector. An output signal of the first photodetector is used to generate a reproduced information signal. An output signal of the second photodetector is fed back to the APC circuit as a front light monitor signal. A part of a laser control signal internally generated in the APC circuit is supplied through a wiring line to a noise reduction circuit as a laser noise monitor signal. The noise reduction circuit subtracts this noise monitor signal from the reproduced information signal to provide a noise-suppressed information signal.

公开(公告)号：US20060120259A1

公开(公告)日：2006-06-08

申请号：US11293366

申请日：2005-12-05

申请人： Toshihiro Sugaya ,  Hisashi Yamada

发明人： Toshihiro Sugaya ,  Hisashi Yamada

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： A single-sided dual layer optical disc of the invention comprises a first light transmission layer, a first recording layer which is accessed with a first laser beam, a second light transmission layer, and a second recording layer which is accessed with a second laser beam, these layers being arranged in that order from an incidence plane in the direction of incidence, the distance from the incidence plane to the second recording layer being 570 to 630 Am, and the areal recording density of the first recording layer being five times or more as high as that of the second recording layer.

摘要翻译： 本发明的单面双层光盘包括第一光透射层，用第一激光束访问的第一记录层，第二光透射层和第二记录层，其被第二激光束 这些层以入射方向从入射面依次排列，从入射面到第二记录层的距离为570〜630Am，第一记录层的面积记录密度为五倍以上 与第二记录层的高度一样高。