利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

254 条记录 (耗时 0.038 秒)

    Optical memory having narrowed track pitch
    3.
    发明授权
    Optical memory having narrowed track pitch 失效
    具有窄轨道间距的光学存储器

    公开(公告)号：US5586109A

    公开(公告)日：1996-12-17

    申请号：US354457

    申请日：1994-12-12

    申请人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    发明人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B3/70

    CPC分类号： G11B7/261 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/26 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/0938

    摘要： A transparent substrate of an optical memory is produced by injection molding using a stamper. Grooves and lands are alternately arranged on the optical memory, for tracking of light converged on the optical memory. The groove width is set in the range of 0.3 .mu.m to 0.4 .mu.m and the groove depth is set in the rage of 80 nm to 100 nm. A decrease in the width of a land at each edge is restrained to 0.2 .mu.m in maximum. With such dimensions, even when the track pitch is set to about 1.4 .mu.m, it is possible to obtain a track crossing signal with intensity sufficient for performing an access operation to a target track. Moreover, since the dimensions bring about an improved reflectance at a land, the optical memory achieves an improved C/N and recording density.

    摘要翻译： 通过使用压模的注射成型制造光学存储器的透明基板。 沟槽和焊盘交替布置在光学存储器上，用于跟踪会聚在光学存储器上的光。 槽宽度设定在0.3μm〜0.4μm的范围内，槽深度设定在80nm〜100nm的范围内。 每个边缘的陆地宽度减小最大限制在0.2亩。 利用这样的尺寸，即使当轨道间距设置为大约1.4μm时，也可以获得具有足以对目标轨道进行访问操作的强度的轨迹交叉信号。 此外，由于尺寸在陆地上产生改进的反射率，所以光学存储器实现了改进的C / N和记录密度。

    Optical memory having narrowed track pitch
    4.
    发明授权
    Optical memory having narrowed track pitch 失效
    具有窄轨道间距的光学存储器

    公开(公告)号：US5676854A

    公开(公告)日：1997-10-14

    申请号：US688852

    申请日：1996-08-01

    申请人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    发明人： Tetsuya Inui ,  Akira Takahashi ,  Kenji Ohta ,  Michinobu Mieda ,  Yoshiteru Murakami

    IPC分类号： G11B7/0045 ,  G11B7/007 ,  G11B7/09 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105

    CPC分类号： G11B7/261 ,  G11B11/10582 ,  G11B7/24 ,  G11B7/24079 ,  G11B7/26 ,  G11B7/00454 ,  G11B7/007 ,  G11B7/0938

    摘要： A transparent substrate of an optical memory is produced by injection molding using a stamper. Grooves and lands are alternately arranged on the optical memory, for tracking of light converged on the optical memory. The groove width is set in the range of 0.3 .mu.m to 0.4 .mu.m and the groove depth is set in the rage of 80 nm to 100 nm. A decrease in the width of a land at each edge is restrained to 0.2 .mu.m in maximum. With such dimensions, even when the track pitch is set to about 1.4 .mu.m, it is possible to obtain a track crossing signal with intensity sufficient for performing an access operation to a target track. Moreover, since the dimensions bring about an improved reflectance at a land, the optical memory achieves an improved C/N and recording density.

    摘要翻译： 通过使用压模的注射成型制造光学存储器的透明基板。 槽和焊盘交替布置在光学存储器上，用于跟踪会聚在光学存储器上的光。 槽宽度设定在0.3μm〜0.4μm的范围内，槽深度设定在80nm〜100nm的范围内。 每个边缘的陆地宽度减小最大限制在0.2亩。 利用这样的尺寸，即使当轨道间距设置为大约1.4μm时，也可以获得具有足以对目标轨道进行访问操作的强度的轨迹交叉信号。 此外，由于尺寸在陆地上产生改进的反射率，所以光学存储器实现了改进的C / N和记录密度。

    Magneto-optical recording medium
    6.
    发明授权
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：US5707727A

    公开(公告)日：1998-01-13

    申请号：US395165

    申请日：1995-02-27

    申请人： Akira Takahashi ,  Yoshiteru Murakami ,  Junsaku Nakajima ,  Kenji Ohta ,  Junichiro Nakayama ,  Hiroyuki Katayama ,  Michinobu Mieda

    发明人： Akira Takahashi ,  Yoshiteru Murakami ,  Junsaku Nakajima ,  Kenji Ohta ,  Junichiro Nakayama ,  Hiroyuki Katayama ,  Michinobu Mieda

    IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/66 ,  B32B5/16 ,  G11B5/02 ,  G11B11/00

    CPC分类号： G11B11/10593 ,  G11B11/10506 ,  G11B11/10515 ,  G11B11/10517 ,  G11B11/10586 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/265

    摘要： A magneto-optical recording medium has a recording layer whereon information is magneto-optically recorded. A readout layer is provided on the recording layer. The readout layer has a compensating temperature that is located between room temperature and the Curie temperature. In the readout layer, upon an application of a light beam, the in-plane magnetization occurs at room temperature and a transition from the in-plane magnetization to vertical magnetization occurs as the temperature of the irradiated area of the readout layer rises above a predetermined temperature. By employing this magneto-optical recording medium, with an application of a light beam that is intensity modulated into two levels, only a spot having a temperature not less than a predetermined temperature is involved in the reproduction; therefore, a recorded bit with a size smaller than the diameter of the light beam can be reproduced, thereby greatly increasing the recording density. Further, the level of the reproduced signals is increased, and crosstalk from the adjoining tracks is reduced; thus, information recording and overwriting can be conducted more easily.

    摘要翻译： 磁光记录介质具有磁信息记录信息的记录层。 读出层设置在记录层上。 读出层具有位于室温和居里温度之间的补偿温度。 在读出层中，在施加光束时，在室温下发生平面内磁化，并且随着读出层的照射区域的温度上升到预定值以上，从面内磁化向垂直磁化的转变发生 温度。 通过采用该磁光记录介质，通过施加强度调制为两个级别的光束，只有具有不低于预定温度的温度的点参与再现; 因此，可以再现具有小于光束直径的尺寸的记录位，从而大大提高记录密度。 此外，再现信号的电平增加，并且来自相邻轨道的串扰减小; 因此，可以更容易地进行信息记录和重写。

    Optical recording element and driving system
    10.
    发明授权
    Optical recording element and driving system 失效
    光学记录元件和驱动系统

    公开(公告)号：US5459711A

    公开(公告)日：1995-10-17

    申请号：US219253

    申请日：1994-03-29

    申请人： Kenji Ohta ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Akira Takahashi ,  Junji Hirokane ,  Yukinori Nishitani ,  Michinobu Mieda ,  Kazuo Van

    发明人： Kenji Ohta ,  Tetsuya Inui ,  Hiroyuki Katayama ,  Akira Takahashi ,  Junji Hirokane ,  Yukinori Nishitani ,  Michinobu Mieda ,  Kazuo Van

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B7/09 ,  G11B7/125 ,  G11B7/24 ,  G11B7/24085 ,  G11B11/105 ,  G11B19/02 ,  G11B3/78

    CPC分类号： G11B7/0045 ,  G11B11/10528 ,  G11B11/10578 ,  G11B11/10595 ,  G11B19/02 ,  G11B7/0938 ,  G11B7/126 ,  G11B7/24 ,  G11B7/24085

    摘要： An optical recording element comprising a recording medium which includes an information recording area formed at every unit in a non-continuous condition, the recording medium further including sample pits disposed at intervals of a fixed distance for providing basic information about the locations of the recording units in same track. Each sample pit comprises a plurality of pits disposed next to the sequence of the recording units so that the spacing between the pits differs from the spacing between the recording units. At least one of the plurality of pits is a long-sized inclined pit which is inclined at an angle in the range of 6.degree. to 80.degree. to a recording track. A driving system for driving the optical recording element for recording information in the non-continuous recording area or erasing information stored therein with a light beam the output of which is varied as required and checking whether said recording or erasing has been correctly performed, within a very short time in which the light beam passes through the non-continuous recording area. By using the optical recording element in combination with its driving system, the processing speed for reducing, erasing and verifying these functions can be greatly improved and the irradiating position of the light beam at every recording unit can be correctly controlled.

    摘要翻译： 一种光记录元件，包括记录介质，该记录介质包括在非连续状态下在每个单元处形成的信息记录区域，所述记录介质还包括以固定距离间隔设置的样品坑，以提供关于记录单元的位置的基本信息 在同一轨道。 每个采样坑包括靠近记录单元序列设置的多个凹坑，使得凹坑之间的间隔与记录单元之间的间隔不同。 多个凹坑中的至少一个是相对于记录轨道以6°至80°的角度倾斜的长尺寸倾斜凹坑。 一种驱动系统，用于驱动用于在非连续记录区域中记录信息的光学记录元件，或者用存储在其中的光束擦除信息，该光束的输出根据需要变化，并且检查是否正确地执行了所述记录或擦除 光束通过非连续记录区域的非常短的时间。 通过与其驱动系统结合使用光学记录元件，可以大大提高用于减少，擦除和验证这些功能的处理速度，并且可以正确地控制每个记录单元处的光束的照射位置。