公开(公告)号：US5592464A

公开(公告)日：1997-01-07

申请号：US475494

申请日：1995-06-07

申请人： Toshihiro Sugaya ,  Yoshinori Honguh

发明人： Toshihiro Sugaya ,  Yoshinori Honguh

IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24079 ,  G11B7/24085 ,  H04N5/85 ,  H04N9/804 ,  H04N9/87

CPC分类号： G11B7/24085 ,  G11B7/0051 ,  G11B7/0938 ,  G11B7/24038 ,  G11B7/24079 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/87

摘要： An optical disk comprises a substrate, and a recording layer which is formed on the substrate and on which information is recorded at specific pitches in the form of pit trains, wherein the information is reproduced by projecting a light beam via an object lens, and when the wavelength of the light beam is .lambda..mu.m and the numerical aperture of the object lens is NA, the track pitch is set in the range of (0.72 to 0.8).times..lambda./NA/1.14 .mu.m, and each of the pits has a trapezoid cross section whose upper width is in the range of (0.3 to 0.5).times./NA/1.14 .mu.m and whose lower width is in the range of (0.2 to 0.32).times..lambda./NA/1.14 .mu.m or whose inner wall has an angle of 30.degree. to 70.degree..

摘要翻译： 光盘包括基板和记录层，其形成在基板上，并以凹坑列的形式以特定间距记录信息，其中通过经由物镜投射光束来再现信息，并且当 光束的波长为λm m，物镜的数值孔径为NA，轨道间距设定在（0.72〜0.8）×λ/NA/1.14μm的范围内，并且每个凹坑具有 其上宽度在（0.3〜0.5）×（NA）/1.14μm的范围内，下宽度在（0.2〜0.32）×λ/NA/1.14μm的范围内的梯形截面，或者其内壁 角度为30°至70°。

公开(公告)号：US5459712A

公开(公告)日：1995-10-17

申请号：US304849

申请日：1994-09-13

申请人： Toshihiro Sugaya ,  Yoshinori Honguh

发明人： Toshihiro Sugaya ,  Yoshinori Honguh

IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24079 ,  G11B7/24085 ,  H04N5/85 ,  H04N9/804 ,  H04N9/87

CPC分类号： G11B7/24085 ,  G11B7/0051 ,  G11B7/0938 ,  G11B7/24038 ,  G11B7/24079 ,  H04N5/85 ,  H04N9/8042 ,  H04N9/87

摘要： An optical disk comprises a substrate, and a recording layer which is formed on the substrate and on which information is recorded at specific pitches in the form of pit trains, wherein the information is reproduced by projecting a light beam via an object lens, and when the wavelength of the light beam is .lambda..mu.m and the numerical aperture of the object lens is NA, the track pitch is set in the range of (0.72 to 0.8).times..lambda./NA/1.14 .mu.m, and each of the pits has a trapezoid cross section whose upper width is in the range of (0.3 to 0.5).times..lambda./NA/1.14 .mu.m and whose lower width is in the range of (0.2 to 0.32).times..lambda./NA/1.14 .mu.m or whose inner wall has an angle of 30.degree. to 70.degree..

摘要翻译： 光盘包括基板和记录层，其形成在基板上，并以凹坑列的形式以特定间距记录信息，其中通过经由物镜投射光束来再现信息，并且当 光束的波长为λm m，物镜的数值孔径为NA，轨道间距设定在（0.72〜0.8）×λ/NA/1.14μm的范围内，并且每个凹坑具有 其上宽度在（0.3〜0.5）×λ/NA/1.14μm的范围内且其下宽度在（0.2〜0.32）×λ/NA/1.14μm的范围内的梯形截面，或者其内部 墙壁的角度为30°至70°。

公开(公告)号：US4636885A

公开(公告)日：1987-01-13

申请号：US807998

申请日：1985-12-12

申请人： Takehito Yamada ,  Toshihiro Sugaya

发明人： Takehito Yamada ,  Toshihiro Sugaya

IPC分类号： G11B5/596 ,  G11B21/08 ,  G11B21/10 ,  G11B5/55 ,  G11B5/56

CPC分类号： G11B5/59661 ,  G11B5/59655

摘要： Disclosed is a disk memory having a plurality of data sectors and servo sectors each provided between adjacent data sectors, spiral tracks being formed in each data sector and each servo sector. Servo information patterns are formed in each servo sector. To cause a read/write head to trace spiral tracks, the phases of the servo patterns with respect to servo tracks are sequentially displaced, from the first servo sector to the final m-th servo sector, by a value obtained by dividing the track pitch of the servo tracks by the number of servo sectors. In the m-th servo sector a servo index used for detecting that the servo sector is formed. A disk device is also disclosed which performs tracking control for the head along the spiral tracks.

摘要翻译： 公开了一种具有多个数据扇区和伺服扇区的磁盘存储器，每个数据扇区和伺服扇区各自设置在相邻的数据扇区之间，螺旋磁道形成在每个数据扇区和每个伺服扇区中。 在每个伺服扇区中形成伺服信息模式。 为了使读/写磁头跟踪螺旋磁道，伺服模式相对于伺服磁道的相位从第一伺服扇区到最终的第m伺服扇区被顺序地移位，通过将磁道间距 的伺服轨迹数量的伺服扇区。 在第m伺服扇区中，用于检测形成伺服扇区的伺服指数。 还公开了一种磁盘装置，其执行沿着螺旋轨道的磁头的跟踪控制。

公开(公告)号：US07747871B2

公开(公告)日：2010-06-29

申请号：US10227853

申请日：2002-08-27

申请人： Toru Kambayashi ,  Koichiro Akiyama ,  Shuichi Tsujimoto ,  Kazuo Sumita ,  Hideki Hirakawa ,  Toshihiro Sugaya

发明人： Toru Kambayashi ,  Koichiro Akiyama ,  Shuichi Tsujimoto ,  Kazuo Sumita ,  Hideki Hirakawa ,  Toshihiro Sugaya

IPC分类号： G06F11/30 ,  G06F12/14

CPC分类号： G11B20/00086 ,  G06F21/10 ,  G06F2211/007 ,  G06F2221/0795 ,  G06F2221/2135 ,  G06Q30/018 ,  G11B20/0021 ,  G11B20/00224 ,  G11B20/00246 ,  G11B20/00253 ,  G11B20/00492 ,  G11B20/00536 ,  G11B20/00557 ,  G11B20/0084 ,  G11B20/00847 ,  H04L9/0891 ,  H04L2209/603

摘要： An information recording apparatus comprises an encryption section encrypting contents information and also a license condition referred to to limit use of the contents information and a decoding key for decoding the encrypted contents information to generate license information, and a recording section recording the encrypted contents information and the generated license information on a recording medium. An information reproducing apparatus comprises a decoder unit decoding the license information recorded on the recording medium using a second decoding key for decoding the license information and deciding on the basis of the license condition contained in the decoded license information whether the contents information can be used. If it is decided that the contents information can be used, the encrypted contents information recorded on the recording medium is decoded using the first decoding key contained in the decoded license information.

摘要翻译： 一种信息记录装置，包括对内容信息进行加密的加密部分，以及用于限制使用内容信息的许可条件和用于对加密的内容信息进行解码以产生许可信息的解码密钥，以及记录加密内容信息的记录部分， 在记录介质上产生的许可证信息。 一种信息再现装置，包括：解码器单元，使用用于解码许可信息的第二解码密钥解码记录在记录介质上的许可信息，并根据包含在解码的许可证信息中的许可证条件来确定是否可以使用内容信息。 如果确定可以使用内容信息，则使用解码的许可证信息中包含的第一解码密钥对记录在记录介质上的加密内容信息进行解码。

公开(公告)号：US07688702B2

公开(公告)日：2010-03-30

申请号：US11170560

申请日：2005-06-29

申请人： Masato Otsuka ,  Toshihiro Sugaya

发明人： Masato Otsuka ,  Toshihiro Sugaya

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： A single-sided dual-layer optical disc comprising an optically transparent layer; a first recording layer accessed by a first laser beam; an intermediate layer; and a second recording layer accessed by a second laser beam, wherein the optically transparent layer, the first recording layer, the intermediate layer, and the second recording layer are sequentially disposed in a laser beam incidence direction, wherein a thickness of the optically transparent layer, which is a distance from a light incident surface to the first recording layer, is 550 to 575 μm, wherein a thickness of the intermediate layer, which is a distance between the first and second recording layers, is 29 to 47 μm, and wherein a surface recording density of the second recording layer is at least 3 times that of the first recording layer.

摘要翻译： 包括光学透明层的单面双层光盘; 由第一激光束访问的第一记录层; 中间层 以及由第二激光束访问的第二记录层，其中光学透明层，第一记录层，中间层和第二记录层依次设置在激光束入射方向上，其中光学透明层的厚度 是从光入射面到第一记录层的距离为550〜575μm，其中作为第一记录层和第二记录层之间的距离的中间层的厚度为29〜47μm，其中， 第二记录层的表面记录密度为第一记录层的表面记录密度的至少3倍。

公开(公告)号：US07477592B2

公开(公告)日：2009-01-13

申请号：US11293371

申请日：2005-12-05

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/24038 ,  G11B2007/0006

摘要： An optical disc of this invention is configured to be capable of dealing with both information in HD DVD and information in DVD. The optical disc is basically specified by the following items (1) to (7): (1) the optical disc is 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 the laser beam enters, (2) the areal recoding density of the second recording layer is three times or more as high as that of the first recording layer, (3) identifying information which indicates that the first recording layer has been formed is formed in the second recording layer, (4) the distance in the light transmission layer from the incidence plane to the first recording layer is 550 μm or more, (5) the distance in the light transmission layer from the incidence plane to the second recording layer is 622 μm or less, (6) the reflectivity of the first recording layer with respect to the first laser beam is 45% to 65%, and (7) the reflectivity of the second recording layer with respect to the second laser beam is 15% to 29%.

摘要翻译： 本发明的光盘被配置为能够处理HD DVD中的信息和DVD中的信息。 光盘基本上由以下（1）至（7）指定：（1）光盘是单面双层光盘，其中光传输层，第一激光束访问的第一记录层， 以第二激光束存取的空间层和第二记录层按照激光入射方向的顺序排列，（2）第二记录层的面记录密度是三倍以上 在第二记录层中形成第一记录层，（3）表示第一记录层的识别信息，（4）光透射层从入射面到第一记录层的距离为 550μm以上，（5）透光层从入射面到第二记录层的距离为622μm以下，（6）第一记录层相对于第一激光束的反射率为45％ 至65％ （7）第二记录层相对于第二激光束的反射率为15％〜29％。

公开(公告)号：US20060126485A1

公开(公告)日：2006-06-15

申请号：US11293371

申请日：2005-12-05

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

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

IPC分类号： G11B7/24

CPC分类号： G11B7/24038 ,  G11B2007/0006

摘要： An optical disc of this invention is configured to be capable of dealing with both information in HD DVD and information in DVD. The optical disc is basically specified by the following items (1) to (7): (1) the optical disc is 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 the laser beam enters, (2) the areal recoding density of the second recording layer is three times or more as high as that of the first recording layer, (3) identifying information which indicates that the first recording layer has been formed is formed in the second recording layer, (4) the distance in the light transmission layer from the incidence plane to the first recording layer is 550 μm or more, (5) the distance in the light transmission layer from the incidence plane to the second recording layer is 622 μm or less, (6) the reflectivity of the first recording layer with respect to the first laser beam is 45% to 65%, and (7) the reflectivity of the second recording layer with respect to the second laser beam is 15% to 29%.

公开(公告)号：US20060092820A1

公开(公告)日：2006-05-04

申请号：US11170560

申请日：2005-06-29

申请人： Masato Otsuka ,  Toshihiro Sugaya

发明人： Masato Otsuka ,  Toshihiro Sugaya

IPC分类号： G11B7/24

CPC分类号： G11B7/24038

摘要： A single-sided dual-layer optical disc comprising an optically transparent layer; a first recording layer accessed by a first laser beam; an intermediate layer; and a second recording layer accessed by a second laser beam, wherein the optically transparent layer, the first recording layer, the intermediate layer, and the second recording layer are sequentially disposed in a laser beam incidence direction, wherein a thickness of the optically transparent layer, which is a distance from a light incident surface to the first recording layer, is 550 to 575 μm, wherein a thickness of the intermediate layer, which is a distance between the first and second recording layers, is 29 to 47 μm, and wherein a surface recording density of the second recording layer is at least 3 times that of the first recording layer.

摘要翻译： 包括光学透明层的单面双层光盘; 由第一激光束访问的第一记录层; 中间层 以及由第二激光束访问的第二记录层，其中光学透明层，第一记录层，中间层和第二记录层依次设置在激光束入射方向上，其中光学透明层的厚度 是从光入射面到第一记录层的距离为550〜575μm，其中作为第一记录层和第二记录层之间的距离的中间层的厚度为29〜47μm，其中， 第二记录层的表面记录密度为第一记录层的表面记录密度的至少3倍。

公开(公告)号：US06898171B1

公开(公告)日：2005-05-24

申请号：US09721763

申请日：2000-11-27

申请人： Toshihiro Sugaya ,  Hiroshi Hasegawa

发明人： Toshihiro Sugaya ,  Hiroshi Hasegawa

IPC分类号： G11B20/12 ,  G11B7/007 ,  G11B27/24 ,  B11B7/24

CPC分类号： G11B20/1217 ,  G11B7/00745 ,  G11B27/24 ,  G11B2020/1225 ,  G11B2020/1238 ,  G11B2020/1239 ,  G11B2020/1287 ,  G11B2220/2537 ,  G11B2220/2575

摘要： A disk-shaped information recording medium has spiral tracks in which land- and groove-shaped tracks are alternately switched in units of rounds, and one index header which is aligned in the radial direction of a disk and is allocated at only the boundary between the land- and groove-shaped tracks.

摘要翻译： 盘形信息记录介质具有螺旋形轨迹，其中平面和槽形轨道以圆为单位交替切换，并且一个索引头在盘的径向方向上对齐，并且仅分配在 陆地和槽形轨道。

公开(公告)号：US06850469B2

公开(公告)日：2005-02-01

申请号：US09803104

申请日：2001-03-12

申请人： Akihito Ogawa ,  Toshihiro Sugaya

发明人： Akihito Ogawa ,  Toshihiro Sugaya

IPC分类号： G11B7/007 ,  G11B20/00 ,  G11B20/10 ,  G11B20/12 ,  G11B27/10 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B7/00

CPC分类号： G11B27/3027 ,  G11B7/007 ,  G11B7/00718 ,  G11B7/00745 ,  G11B20/00086 ,  G11B20/10009 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1258 ,  G11B27/105 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/235 ,  G11B2220/2562 ,  G11B2220/2575

摘要： An information recording medium has a plurality of stacked recording layers. Each recording layer has a spiral track which defines a plurality of rounds, and at least one index header aligned in the radial direction of the disk to partially intercept the spiral track. The index header has address data of each round of the spiral track, which is formed by embossed pits, and some or all of the index headers of the first and second recording layers are laid out to overlap each other when viewed from the predetermined surface.