利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

321 条记录 (耗时 0.01 秒)

    Magneto-optical recording media and magneto-optical recording device using the same
    2.
    发明授权
    Magneto-optical recording media and magneto-optical recording device using the same 失效
    磁光记录介质和使用其的磁光记录装置

    公开(公告)号：US5434844A

    公开(公告)日：1995-07-18

    申请号：US43455

    申请日：1993-04-06

    申请人： Harukazu Miyamoto ,  Toshio Niihara ,  Keikichi Andoo ,  Masahiro Ojima

    发明人： Harukazu Miyamoto ,  Toshio Niihara ,  Keikichi Andoo ,  Masahiro Ojima

    IPC分类号： G11B11/105 ,  G11C13/06

    CPC分类号： G11B11/10515 ,  G11B11/10593 ,  G11B11/10595

    摘要： This invention provides a magneto-optical recording medium comprising at least an information storage layer and a readout layer disposed on the substrate, the information storage layer being used to record information by changing the magnetized state by raising the temperature thereof by light irradiation, and the readout layer being capable of copying information recorded on the above-mentioned information storage layer, located closer to the substrate than the above-mentioned information storage layer, and having a coercive force of 3 kOe or less at room temperature. By using this recording medium, a Signal to Noise ratio can be obtained in reproduction without deterioration of the information recording characteristics.

    摘要翻译： 本发明提供一种磁光记录介质，至少包括信息存储层和设置在基板上的读出层，所述信息存储层用于通过通过光照射升高其温度来改变磁化状态来记录信息，并且 读出层能够复制记录在上述信息存储层上的信息，位于比上述信息存储层更靠近基板的位置，并且在室温下具有3kOe以下的矫顽力。 通过使用该记录介质，可以在再现时获得信噪比，而不会降低信息记录特性。

    Magneto-optical recording medium having dielectric layers with different indices of refraction
    7.
    发明授权
    Magneto-optical recording medium having dielectric layers with different indices of refraction 失效
    具有不同折射率的电介质层的磁光记录介质

    公开(公告)号：US5914198A

    公开(公告)日：1999-06-22

    申请号：US831262

    申请日：1997-04-07

    申请人： Harukazu Miyamoto ,  Toshio Niihara ,  Norio Ohta ,  Fumiyoshi Kirino

    发明人： Harukazu Miyamoto ,  Toshio Niihara ,  Norio Ohta ,  Fumiyoshi Kirino

    IPC分类号： G11B11/105 ,  G11B5/66

    CPC分类号： G11B11/10593 ,  G11B11/10584 ,  Y10S428/90

    摘要： In a magneto-optical recording medium which comprises a transparent substrate, a first dielectric film, a magnetic film, a second dielectric film and a metal reflective film, formed successively one upon another, Kerr rotation angle can be increased without lowering the reflectivity by setting the thickness of the first dielectric film to 120-220% of a minimum film thickness among film thicknesses showing a minimum reflectivity and setting the thickness of the second dielectric film to 80-120% of a film thickness showing a maximum Kerr rotation angle and furthermore by making the refractive index of the first dielectric film lower than that of the second dielectric film.

    摘要翻译： 在包括透明基板的磁光记录介质中，可以相互依次形成的第一电介质膜，磁膜，第二电介质膜和金属反射膜，可以增加克尔旋转角度，而不会通过设定降低反射率 第一电介质膜的厚度为薄膜厚度的最小膜厚的120-220％，表示最小的反射率，并将第二电介质膜的厚度设定为显示最大克尔旋转角度的膜厚度的80-120％ 通过使第一电介质膜的折射率低于第二电介质膜的折射率。

    Magneto-optical disk and process for manufacturing the same
    9.
    发明授权
    Magneto-optical disk and process for manufacturing the same 失效
    磁光盘及其制造方法

    公开(公告)号：US5179546A

    公开(公告)日：1993-01-12

    申请号：US631984

    申请日：1990-12-21

    申请人： Yumiko Anzai ,  Yoshinori Miyamura ,  Toshio Niihara ,  Harukazu Miyamoto ,  Norio Ohta

    发明人： Yumiko Anzai ,  Yoshinori Miyamura ,  Toshio Niihara ,  Harukazu Miyamoto ,  Norio Ohta

    IPC分类号： G11B11/10 ,  G11B7/26 ,  G11B11/105

    CPC分类号： G11B11/10584 ,  G11B11/10582 ,  G11B7/26

    摘要： A magneto-optical disk which has a circular disk form and comprises a substrate provided with information pits and a guide groove, a recording medium layer provided on the substrate, and a protective layer formed of at least one thin film on the medium layer, in which the surface of the protective layer is minutely roughened to have a concave rough pattern and not to substantially protrude beyond a reference level composed of the outermost surface portions of the protective layer. When the magneto-optical disk is subjected to recording by a CSS system using an air floating magnetic head conforming to high-frequency recording in a magnetic field modulation type recording, which is one of methods of overwrite recording on magneto-optical disks, the minute concave rough pattern formed on the surface of the disk substrate prevents such troubles as adhesion of the magnetic head to the surface of the disk and collision between the disk substrate being rotated and the head.

    摘要翻译： 一种具有圆盘形状并包括设置有信息凹坑的衬底和引导槽的磁光盘，设置在衬底上的记录介质层和由介质层上的至少一层薄膜形成的保护层， 其保护层的表面被微小地粗糙化以具有凹形粗糙图案，并且基本上不突出超过由保护层的最外表面部分组成的基准水平。 当磁光盘通过使用在磁光调制型记录中的符合高频记录的空气浮动磁头的CSS系统进行记录时，其是在磁光盘上重写记录的方法之一，分钟 形成在盘基板表面上的凹形粗糙图案防止了磁头粘附到盘表面和盘基片旋转与头部之间的碰撞等问题。

    Information recording medium with clock information therein
    10.
    发明授权
    Information recording medium with clock information therein 失效
    具有时钟信息的信息记录介质

    公开(公告)号：US5959943A

    公开(公告)日：1999-09-28

    申请号：US932056

    申请日：1997-09-17

    申请人： Seiji Yonezawa ,  Norio Ohta ,  Toshio Niihara ,  Keiji Kataoka ,  Masahiko Takahashi ,  Harukazu Miyamoto ,  Hirofumi Sukeda ,  Toshiaki Tsuyoshi

    发明人： Seiji Yonezawa ,  Norio Ohta ,  Toshio Niihara ,  Keiji Kataoka ,  Masahiko Takahashi ,  Harukazu Miyamoto ,  Hirofumi Sukeda ,  Toshiaki Tsuyoshi

    IPC分类号： G11B20/10 ,  G11B5/02 ,  G11B7/006 ,  G11B7/007 ,  G11B11/10 ,  G11B11/105 ,  G11B27/19 ,  G11B27/30 ,  G11B11/00

    CPC分类号： G11B7/00745 ,  G11B11/10513 ,  G11B11/10521 ,  G11B11/10528 ,  G11B11/1053 ,  G11B11/10595 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/006

    摘要： A magneto-optical data recording system comprises magnetic field pulse applying means for applying to a magneto-optic recording medium a magnetic field pulse of a polarity corresponding to code data to be recorded, and means for heating the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to be recorded. During recording, the magnetic field pulse applying means applies a magnetic field pulse of a polarity corresponding to code data along a track of the recording medium and the heating means continuously heats the recording medium in a pulsating manner at a predetermined frequency synchronous with the code data to thereby directly overwrite the code data. The magnetic field pulse applying means includes a magnetic coil driven by code data from a source of code data (data generator). The heating means includes an optical head which comprises a source of laser beam driven by a laser driver and an optical system which focuses the laser beam from the source of laser beam as a small light spot onto the recording medium.

    摘要翻译： 一种磁光数据记录系统，包括磁场脉冲施加装置，用于向磁光记录介质施加与要记录的代码数据相对应的极性的磁场脉冲，以及用于以脉动方式加热记录介质的装置， 与要记录的代码数据同步的预定频率。 在记录期间，磁场脉冲施加装置沿着记录介质的轨道施加与代码数据对应的极性的磁场脉冲，并且加热装置以与代码数据同步的预定频率的脉动方式连续地加热记录介质 从而直接覆盖代码数据。 磁场脉冲施加装置包括由代码数据源（数据发生器）的代码数据驱动的磁线圈。 加热装置包括光学头，其包括由激光驱动器驱动的激光束源和将来自激光源的激光束作为小光点聚焦到记录介质上的光学系统。