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    Optical recording medium having a plurality of meandering groove tracks, optical recording medium producing apparatus and optical recording medium producing method
    2.
    发明授权
    Optical recording medium having a plurality of meandering groove tracks, optical recording medium producing apparatus and optical recording medium producing method 有权
    具有多个曲折槽轨道的光记录介质，光记录介质制造装置和光记录介质制造方法

    公开(公告)号：US06813237B2

    公开(公告)日：2004-11-02

    申请号：US09911424

    申请日：2001-07-25

    申请人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu ,  Seiro Oshima ,  Takao Tagiri

    发明人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu ,  Seiro Oshima ,  Takao Tagiri

    IPC分类号： G11B724

    CPC分类号： G11B20/00594 ,  G11B7/007 ,  G11B7/24085 ,  G11B7/261 ,  G11B20/00086 ,  G11B20/00586 ,  G11B20/00601

    摘要： The present invention provides an optical recording medium, in which levels of wobble signals extracted from a recording area formed snakily, a reproduction exclusive area and an impossible area are maintained constant. On DVD-RW, groove tracks are snakily formed on a groove section on which recording information is recorded, and pit strings where a plurality of phase pits wave are arranged on the impossible area and the reproduction exclusive area which prevent illegal copying. On the respective areas, pit depths (groove depths), duty of the pit strings and wobbling amplitudes are set according to predetermined conditions so that the output levels of the wobble signals extracted based on the wobbling amplitudes can be maintained constant on the respective areas. As a result, synchronous control can be made accurately at the time of recording and reproduction on/from the DVD-RW.

    摘要翻译： 本发明提供了一种光记录介质，其中从形成为易碎的记录区域，再现专属区域和不可能区域提取的摆动信号的水平保持恒定。 在DVD-RW上，在记录有记录信息的凹槽部分上形成凹槽轨道，并且在不可能区域上布置多个相位波的凹坑串和防止非法复制的再现专属区域。 在各个区域中，根据预定条件设定凹坑深度（凹槽深度），凹坑串的占空比和摆动振幅，使得基于摆动幅度提取的摆动信号的输出电平可以在各个区域上保持恒定。 结果，可以在DVD-RW上进行记录和再现时准确地进行同步控制。

    Information recording medium
    4.
    发明授权
    Information recording medium 失效
    信息记录介质

    公开(公告)号：US07260052B2

    公开(公告)日：2007-08-21

    申请号：US10701077

    申请日：2003-11-05

    申请人： Masahiro Kato ,  Tatsuhiro Yone ,  Atsushi Yamaguchi ,  Eiji Muramatsu ,  Shoji Taniguchi ,  Toshihiko Takishita ,  Seiro Oshima ,  Takao Tagiri

    发明人： Masahiro Kato ,  Tatsuhiro Yone ,  Atsushi Yamaguchi ,  Eiji Muramatsu ,  Shoji Taniguchi ,  Toshihiko Takishita ,  Seiro Oshima ,  Takao Tagiri

    IPC分类号： G11B7/24

    CPC分类号： G11B7/24085 ,  G11B7/0053 ,  G11B7/00745 ,  G11B7/0079

    摘要： A groove track and a land track are alternately and spirally formed on an information recording medium. On the land track neighboring the groove track, pre-information indicating position information of a track on a disc is formed as a prepit. On the information recording medium, an embossed area is formed so that information about a copyright and for preventing an illegal copy cannot be rewritten. In the embossed area, an embossed configuration including a pit and a space of predetermined depths is formed. The prepit in the embossed area is formed so that the prepit has an optimized configuration according to a pit length and a space length in the embossed area which the prepit neighbors. Consequently, interference between the embossed configuration and the prepit can be prevented even in a case that the prepit is formed in addition to the embossed configuration in the embossed area.

    摘要翻译： 凹槽轨道和脊轨道交替地并螺旋地形成在信息记录介质上。 在与凹槽轨道相邻的陆地轨道上，指示盘上的轨道的位置信息的预先信息被形成为预凹坑。 在信息记录介质上，形成压花区域，使得关于版权和防止非法复制的信息不能被重写。 在压纹区域中，形成包括凹坑和预定深度空间的压纹构造。 形成压纹区域中的预凹坑形成为使得预凹坑具有根据凹坑长度和预凹坑邻近的压纹区域中的间隔长度的优化配置。 因此，即使在浮雕区域中除了压花构造之外还形成预凹坑的情况下，也可以防止压花构造与预制坑之间的干涉。

    Recording medium and apparatus and method for manufacturing the same
    5.
    发明授权
    Recording medium and apparatus and method for manufacturing the same 有权
    记录介质及其制造方法

    公开(公告)号：US07177263B2

    公开(公告)日：2007-02-13

    申请号：US10698422

    申请日：2003-11-03

    申请人： Masahiro Kato ,  Eiji Muramatsu ,  Atsushi Yamaguchi ,  Shoji Taniguchi

    发明人： Masahiro Kato ,  Eiji Muramatsu ,  Atsushi Yamaguchi ,  Shoji Taniguchi

    IPC分类号： G11B7/24

    CPC分类号： G11B7/00718 ,  G11B7/00736 ,  G11B7/24085 ,  G11B7/261 ,  G11B27/24 ,  G11B27/3027 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  Y10T428/21

    摘要： A recording medium comprises pairs of groove tracks and land tracks provided side by side while being bent periodically, a plurality of land prepits previously formed on the land tracks and carrying information about the groove tracks, and a recording layer formed on at least the groove tracks and the land tracks. The land prepits have a radius of mean curvature smaller than a radius of mean curvature of sides of the groove tracks in land-prepit absent regions of the land prepits and are defined by curved surfaces continuously extending from the sides of the groove tracks. Those sides of the groove tracks which face the continuous curved surfaces of the land prepits are curved surfaces that stricture the groove tracks.

    摘要翻译： 一种记录介质包括一对槽周边并且周期性地弯曲设置的槽轨道和槽脊轨迹，预先形成在槽脊轨道上并携带关于槽轨道的信息的多个焊盘预制坑以及至少形成在槽轨道上的记录层 和陆地轨道。 平面预制凹坑的平均曲率半径小于陆地预制凹坑的陆地预制凹坑区域中凹槽轨迹的平均曲率半径，并且由凹槽轨道的侧面连续延伸的曲面限定。 凹槽轨道的面对凹坑预凹坑的连续弯曲表面的那些侧面是使凹槽轨道缩窄的曲面。

    Optical recording medium applicable for improved servo control
    7.
    发明授权
    Optical recording medium applicable for improved servo control 失效
    适用于改进伺服控制的光记录介质

    公开(公告)号：US06930969B2

    公开(公告)日：2005-08-16

    申请号：US09983732

    申请日：2001-10-25

    申请人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu

    发明人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu

    IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24 ,  G11B7/24085 ,  G11B7/26 ,  G11B20/12

    CPC分类号： G11B7/24 ,  G11B7/007 ,  G11B7/00745 ,  G11B7/0938 ,  G11B7/24085 ,  G11B7/261 ,  G11B20/1252

    摘要： In an optical recording medium 10 comprising groove tracks 11 including a first area Ba for recording record information and a second area Ca in which predetermined data is formed as embossed pit rows 19 and a readout of other data overwritten and recorded on said embossed pit rows 19 is prevented, and land tracks 12 formed between the adjacent groove tracks 11, a depth Ed and a duty of the embossed pit rows 19 are set so that a radial push-pull signal in the first area and a radial push-pull signal in the second area become the substantially same level.

    摘要翻译： 在包括具有用于记录记录信息的第一区域Ba和其中预定数据被形成为浮雕凹坑行19的第二区域Ca的凹槽轨迹11的光学记录介质10中，以及被覆盖并记录在所述压纹凹坑行19上的其它数据的读出 并且在相邻的凹槽轨道11之间形成的脊迹12，深度Ed和压花凹坑列19的占空比被设置为使得第一区域中的径向推挽信号和第一区域中的径向推挽信号 第二区域成为同等水平。

    Optical recording medium
    8.
    发明授权
    Optical recording medium 失效
    光记录介质

    公开(公告)号：US06599607B1

    公开(公告)日：2003-07-29

    申请号：US09544551

    申请日：2000-04-06

    申请人： Toshihiko Takishita ,  Masahiro Kato ,  Eiji Muramatsu ,  Kunihiko Horikawa ,  Shoji Taniguchi ,  Atsushi Yamaguchi

    发明人： Toshihiko Takishita ,  Masahiro Kato ,  Eiji Muramatsu ,  Kunihiko Horikawa ,  Shoji Taniguchi ,  Atsushi Yamaguchi

    IPC分类号： B32B302

    CPC分类号： G11B7/00745 ,  Y10T428/21

    摘要： An optical recording medium is designed to generate a read signal free from waveform distortion during reproduction of information. The optical recording medium is formed with information tracks on which data pits carrying information data is to be formed, and prepit tracks previously formed with a plurality of prepits. Each of the information tracks and each of the prepit tracks are positioned adjacent to each other, and each of the prepits is formed to be spaced apart from adjacent information tracks in at least its bottom part.

    摘要翻译： 光记录介质被设计成在再现信息期间产生没有波形失真的读信号。 光记录介质形成有要在其上形成承载信息数据的数据坑的信息轨迹，并且预先形成有多个预凹坑的预制轨迹。 每个信息轨道和每个预凹坑轨道彼此相邻定位，并且每个预凹坑形成为至少在其底部部分与相邻信息轨迹间隔开。

    Information recording apparatus and information recording method
    10.
    发明授权
    Information recording apparatus and information recording method 失效
    信息记录装置和信息记录方法

    公开(公告)号：US07586823B2

    公开(公告)日：2009-09-08

    申请号：US10546719

    申请日：2004-02-25

    申请人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu ,  Shoji Taniguchi

    发明人： Atsushi Yamaguchi ,  Masahiro Kato ,  Eiji Muramatsu ,  Shoji Taniguchi

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/0062 ,  G11B7/00456

    摘要： In a recording strategy suitable for high-speed recording, a laser driving signal includes a top pulse having a pulse width corresponding to a recording mark length and multi-pulses having a period 3-times larger than a base clock period of a recording mark. The top pulse is has the first identical-shape top pulses when the recording mark length is 3nT (“n” is a natural number), the second identical-shape top pulses when the recording mark length is (3n+1)T, and the third identical-shape top pulses when the recording mark length is (3n+2)T.

    摘要翻译： 在适于高速记录的记录策略中，激光驱动信号包括具有对应于记录标记长度的脉冲宽度的顶部脉冲和具有比记录标记的基本时钟周期大3倍的周期的多脉冲。 当记录标记长度为3nT（“n”为自然数）时，顶部脉冲具有第一相同形状的顶部脉冲，当记录标记长度为（3n + 1）T时，第二相同形状的顶部脉冲，以及 当记录标记长度为（3n + 2）T时，第三个相同形状的顶部脉冲。