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    Magneto-optical head assembly with improved detection means
    6.
    发明授权
    Magneto-optical head assembly with improved detection means 失效
    具有改进检测手段的磁光头组件

    公开(公告)号：US4573149A

    公开(公告)日：1986-02-25

    申请号：US437504

    申请日：1982-10-28

    申请人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi ,  Hideyoshi Yamaoka

    发明人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi ,  Hideyoshi Yamaoka

    IPC分类号： G11B7/08 ,  G11B11/105 ,  H04N1/21 ,  G11B11/00

    CPC分类号： H04N1/2195 ,  G11B11/10532 ,  G11B7/08 ,  H04N1/2175 ,  H04N2201/0084 ,  H04N2201/0089

    摘要： A magneto-optical head assembly for a reflection type magneto-optical memory apparatus uses a laser beam for recording, retrieving, and erasing data on a recording medium comprised of a vertical, magnetic, and anisotropic thin film. The light beam emitted from the head assembly is guided to a fixed position on said recording medium. Included are a light detection apparatus for receiving a control signal, and a separate light detection apparatus for receiving a data signal. A beam splitter, to which has been applied a multicoated thin film dielectric body capable of increasing the Kerr rotation angle of the laser beam reflected from the recording medium, is positioned in the optical system through which the laser beam passes.

    摘要翻译： 用于反射型磁光存储装置的磁光头组件使用激光束在由垂直，磁和各向异性薄膜组成的记录介质上记录，取出和擦除数据。 从头组件发射的光束被引导到所述记录介质上的固定位置。 包括用于接收控制信号的光检测装置和用于接收数据信号的单独的光检测装置。 已经施加有能够增加从记录介质反射的激光束的克尔旋转角度的多层薄膜电介质的分束器位于激光束通过的光学系统中。

    Magneto-optic recording/playback head assembly
    7.
    发明授权
    Magneto-optic recording/playback head assembly 失效
    磁光记录/回放头组件

    公开(公告)号：US4497006A

    公开(公告)日：1985-01-29

    申请号：US345056

    申请日：1982-02-02

    申请人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi

    发明人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi

    IPC分类号： G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B5/32

    CPC分类号： G11B11/10

    摘要： There is disclosed a head assembly for use in a magneto-optic recording/playback system which includes a memory medium having a magnetic coating having a magnetic anisotropy in a vertical direction. A light beam is applied to the memory medium for recording and reproduction of information. The head assembly includes a polarizing prism and a Faraday effect element in an optical path for the light beam. There is needed only the single polarizer.

    摘要翻译： 公开了一种在磁光记录/重放系统中使用的头组件，其包括具有在垂直方向上具有磁各向异性的磁性涂层的存储介质。 将光束施加到存储介质中用于记录和再现信息。 头组件包括用于光束的光路中的偏振棱镜和法拉第效应元件。 只需要单个偏光片。

    Magneto-optic memory element
    8.
    发明授权
    Magneto-optic memory element 失效
    磁光存储元件

    公开(公告)号：US4414650A

    公开(公告)日：1983-11-08

    申请号：US275388

    申请日：1981-06-19

    申请人： Kenji Ohta ,  Akira Takahashi ,  Toshihisa Deguchi

    发明人： Kenji Ohta ,  Akira Takahashi ,  Toshihisa Deguchi

    IPC分类号： G02F1/09 ,  G03G5/16 ,  G11B11/10 ,  G11B11/105 ,  G11C13/04

    CPC分类号： G02F1/09 ,  G03G5/16 ,  G11B11/10 ,  G11B11/10582

    摘要： A magneto-optic memory medium comprises a reflector exhibiting reflectance for light used for information reproduction and a magneto-optic magnetization film disposed on the reflector. When light is applied for information reproduction, the light impinges on the magnetization film and reaches the reflector. The light reflected through the reflector and the magnetization film is of use for information reproduction. In a preferred form of the magneto-optic memory medium, there is deposited on a transparent substrate a magnetic film having an axis of easy magnetization perpendicular to its surface. The magnetization film is overlaid with a reflective coating which is shaped into a strip configuration.

    摘要翻译： 磁光存储介质包括对于用于信息再现的光的反射率和设置在反射器上的磁光磁化膜的反射器。 当光施加用于信息再现时，光照射在磁化膜上并到达反射器。 通过反射器和磁化膜反射的光可用于信息再现。 在磁光存储介质的优选形式中，在透明基板上沉积具有垂直于其表面的易磁化轴的磁性膜。 磁化膜被形成为条状构造的反射涂层覆盖。

    Optical memory medium with predetermined guide tracks and prepits
    9.
    发明授权
    Optical memory medium with predetermined guide tracks and prepits 失效
    具有预定导轨和预凹坑的光存储介质

    公开(公告)号：US5666345A

    公开(公告)日：1997-09-09

    申请号：US203619

    申请日：1994-02-28

    申请人： Akira Takahashi ,  Tetsuya Inui ,  Kenji Ohta ,  Toshihisa Deguchi ,  Kazuo Van

    发明人： Akira Takahashi ,  Tetsuya Inui ,  Kenji Ohta ,  Toshihisa Deguchi ,  Kazuo Van

    IPC分类号： G11B7/007 ,  G11B7/013 ,  G11B7/09 ,  G11B7/24

    CPC分类号： G11B7/24085 ,  G11B7/0938 ,  G11B7/007

    摘要： An optical memory disc medium contains a plurality of guide groove tracks. The guide groove tracks are arranged parallel to each other and they are used for controlling a position of a light beam. There is a land region between the guide groove tracks which is wider than the width of the guide groove tracks as measured in the disc-radial direction. Prepits for providing address information for the guide groove tracks are provided. The prepits are formed on the land regions and interposed between the lateral edges in the disc-radial direction of adjacent parallel guide groove tracks. Each prepit has a width which width is a narrower dimension than the width of each guide groove track as measured in the disc-radial direction.

    摘要翻译： 光存储盘介质包含多个导槽轨道。 引导槽轨道彼此平行地布置，并且它们用于控制光束的位置。 在导向槽轨道之间具有比在径向方向上测量的引导槽轨道的宽度宽的区域。 提供了用于提供导槽轨道的地址信息的准备。 在凹槽区域上形成预凹坑，并且在相邻的平行引导槽轨道的盘径方向上插入横向边缘之间。 每个预凹坑具有宽度，该宽度比在径向方向上测量的每个引导槽轨道的宽度更窄。

    Optical memory medium with preformed pit arrangement
    10.
    发明授权
    Optical memory medium with preformed pit arrangement 失效
    具有预制凹坑布置的光学存储介质

    公开(公告)号：US5477524A

    公开(公告)日：1995-12-19

    申请号：US304810

    申请日：1994-09-13

    申请人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi

    发明人： Toshihisa Deguchi ,  Kenji Ohta ,  Akira Takahashi

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

    CPC分类号： G11B7/0938 ,  G11B7/00745 ,  G11B7/24 ,  G11B7/24085

    摘要： In an optical memory medium comprising prepits on which a light spot is impinged to obtain information and, if required, guide grooves: each of those among the prepits which are longer than the diameter of the light spot consists of a series of pit portions and unpitted portions; each of the prepits is sandwiched between two of the discontinuous portions of guide grooves adjacent to each other; the guide grooves have one or more narrow portions, and each of the prepits is sandwiched between two of the narrow portions of guide grooves adjacent to each other; or the guide grooves have one or more long portions, one or more short portions, and narrow portions formed between the long and short portions, and each of the prepits is sandwiched between two of the short portions of guide grooves adjacent to each other.

    摘要翻译： 在包括预定坑的光学存储介质中，其上照射有光斑以获得信息，并且如果需要，导向槽：比该光斑直径长的预凹坑中的每一个由一系列凹坑部分组成， 部分 每个预凹坑夹在相互邻接的引导槽的两个不连续部分之间; 引导槽具有一个或多个窄部分，并且每个预凹坑夹在彼此相邻的引导槽的两个狭窄部分之间; 或导向槽具有一个或多个长部分，一个或多个短部分和形成在长部分和短部分之间的窄部分，并且每个预凹坑夹在彼此相邻的引导槽的两个短部分之间。