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：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：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：US5475210A

公开(公告)日：1995-12-12

申请号：US73320

申请日：1993-06-08

申请人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura ,  Isao Hoshino ,  Masahiko Tanaka ,  Teruo Murakami ,  Hiroharu Satoh ,  Hiromichi Kobori ,  Sadanari Fujimoto

发明人： Toyoki Taguchi ,  Toshihiro Sugaya ,  Hisashi Yamada ,  Kei Shimura ,  Isao Hoshino ,  Masahiko Tanaka ,  Teruo Murakami ,  Hiroharu Satoh ,  Hiromichi Kobori ,  Sadanari Fujimoto

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

CPC分类号： G11B7/126 ,  H04N5/911 ,  H01S5/02248 ,  H01S5/02296 ,  H01S5/0683 ,  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.

摘要翻译： 光盘装置包括用于发射光束的半导体激光器和用于驱动激光器的自动功率控制或APC电路。 复合棱镜结构在光学头部分光学耦合到激光器，并且限定第一光路，用于使前激光投射到旋转光盘上并将其反射的光从第一光电检测器引导，第二光路 用于将一部分反射光引导到第二光电检测器的光路。 第一光电检测器的输出信号用于产生再生信息信号。 第二光电检测器的输出信号作为前光监视信号反馈到APC电路。 在APC电路中内部生成的激光控制信号的一部分通过布线作为激光噪声监视信号提供给降噪电路。 噪声降低电路从再生信息信号中减去该噪声监视信号，提供噪声抑制信息信号。

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：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：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。

公开(公告)号：US07190663B2

公开(公告)日：2007-03-13

申请号：US10233671

申请日：2002-09-04

申请人： Hideo Ando ,  Kazuo Watabe ,  Hiroharu Sato ,  Toshihiro Sugaya ,  Chosaku Noda

发明人： Hideo Ando ,  Kazuo Watabe ,  Hiroharu Sato ,  Toshihiro Sugaya ,  Chosaku Noda

IPC分类号： G11B7/00

CPC分类号： G11B7/00745 ,  G11B20/1217 ,  G11B20/1262 ,  G11B20/1833 ,  G11B27/24 ,  G11B27/3027 ,  G11B2020/10898 ,  G11B2020/1222 ,  G11B2020/1287 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/2575

摘要： User data recording areas and intermediate areas are alternately arranged on a disk. The intermediate area records at least information for synchronization.

摘要翻译： 用户数据记录区域和中间区域交替地布置在盘上。 中间区域至少记录用于同步的信息。

公开(公告)号：US4745503A

公开(公告)日：1988-05-17

申请号：US832233

申请日：1986-02-24

申请人： Takao Muraoka ,  Toshihiro Sugaya

发明人： Takao Muraoka ,  Toshihiro Sugaya

IPC分类号： G11B21/02 ,  H02K41/035 ,  G11B5/55 ,  G11B21/08

CPC分类号： H02K41/0356 ,  G11B21/02

摘要： A linear actuator has a flat box-like carriage movable along an access direction of a disk as a recording medium, a motor coil housed and fixed in the carriage, and a permanent magnet arrangement housed and fixed in the carriage to apply a magnetic field to the motor coil. The permanent magnet arrangement includes an E-shaped yoke member with a central portion extending along the access direction and inserted in the motor coil, a pair of outer portions arranged along two sides of the central portion, and permanent magnets arranged on opposite surfaces of the outer and central portions. The yoke member is arranged in the carriage to be parallel to the disk.

摘要翻译： 线性致动器具有沿着作为记录介质的盘的存取方向移动的平坦的盒状托架，容纳并固定在托架中的马达线圈和容纳并固定在托架中以将磁场施加到 电机线圈。 所述永久磁铁装置包括：E形磁轭部件，其中心部分沿着所述进入方向延伸并且插入所述电动机线圈中，沿着所述中心部分的两侧布置的一对外部部分，以及布置在所述电机线圈的相对表面上的永磁体 外部和中部。 轭构件布置在托架中以平行于盘。