利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

174 条记录 (耗时 0.013 秒)

    Optical recording medium and device for reproducing the same
    21.
    发明公开
    Optical recording medium and device for reproducing the same 失效
    Optisches Aufzeichnungsmedium und Einrichtung zur Wiedergabe desselben。

    公开(公告)号：EP0621591A2

    公开(公告)日：1994-10-26

    申请号：EP94300904.3

    申请日：1994-02-08

    申请人： PIONEER ELECTRONIC CORPORATION

    发明人： Onagi, Nobuaki, Pioneer Electronic Corp. ,  Higuchi, Takanobu, Pioneer Electronic Corp.

    IPC分类号： G11B7/24 ,  G11B7/00 ,  G11B11/10

    CPC分类号： G11B7/252 ,  B82Y10/00 ,  G11B7/0052 ,  G11B7/24 ,  G11B7/257 ,  G11B7/2585 ,  G11B11/10515 ,  G11B11/10584 ,  G11B11/10593 ,  G11B2007/24306 ,  G11B2007/24314 ,  G11B2007/25706 ,  G11B2007/25716

    摘要： An optical recording medium (1, 50) includes: a substrate (2, 22, 52) on which information is recorded as phase pits, and a polarization state varying (3, 23, 53) layer for rotating a polarization state of a light beam irradiated thereon in accordance with a temperature distribution caused by irradiation of the light beam. A device (10, 10A, 10B, 10C) for reproducing information recorded on the optical recording medium includes: light irradiation unit (11) for irradiating a read-out light beam to produce a light spot on the optical recording medium so that a light intensity of the light beam at a first portion of the light spot is higher than a predetermined level, separation unit (12) for separating a component of light beam having a predetermined polarization state from a light beam reflected by the optical recording medium, light receiving unit (17a, 17b, 17c) for receiving the light beam separated by said separation unit and generating read-out signal, and reproducing unit (18, 18a, 18b) for reproducing information recorded on the optical recording medium on the basis of the read-out signal.

    摘要翻译： 一种光记录介质（1,50）包括：信息被记录为相位凹坑的基板（2,22,52）和用于旋转光的偏振态的偏振状态变化（3,23,53）层 根据由光束的照射引起的温度分布照射在其上的光束。 用于再现记录在光学记录介质上的信息的装置（10,10A，10B，10C）包括：光照射单元（11），用于照射读出的光束以在光学记录介质上产生光斑，使得光 在光点的第一部分处的光束的强度高于预定水平;用于将具有预定偏振态的光束的分量与由光记录介质反射的光束分离的分离单元（12） 单元（17a，17b，17c），用于接收由所述分离单元分离的光束并产生读出信号;以及再现单元（18,18a，18b），用于基于所读取的信息再现记录在光学记录介质上的信息 输出信号。

    Magneto-optical recording medium
    23.
    发明公开
    Magneto-optical recording medium 失效
    磁光记录介质

    公开(公告)号：EP0509836A2

    公开(公告)日：1992-10-21

    申请号：EP92303487.0

    申请日：1992-04-16

    申请人： SHARP KABUSHIKI KAISHA

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

    IPC分类号： G11B11/10

    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： 磁光记录介质具有记录层，在该记录层上信息被磁光记录。 在记录层上提供读出层。 读出层具有位于室温与居里温度之间的补偿温度。 在读出层中，在施加光束时，面内磁化在室温下发生，并且随着读出层的照射区域的温度升高到预定值以上，发生从面内磁化到垂直磁化的转变 温度。 通过采用这种磁光记录介质，在强度调制为两级的光束的施加下，只有具有不低于预定温度的温度的点参与再现; 因此，可以再现尺寸小于光束直径的记录位，从而大大增加了记录密度。 此外，再现信号的电平增加，并且来自相邻轨道的串扰减少; 从而可以更容易地进行信息记录和重写。

    Magneto-optic memory element
    29.
    发明公开
    Magneto-optic memory element 失效
    磁力探测器。

    公开(公告)号：EP0161807A1

    公开(公告)日：1985-11-21

    申请号：EP85302580.7

    申请日：1985-04-12

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Ohta, Kenji ,  Takahashi, Akira ,  Katayama, Hiroyuki ,  Hirogane, Junji ,  Murakami, Yoshiteru

    IPC分类号： G11B11/10 ,  G11B7/24

    CPC分类号： G11B11/10586 ,  G11B11/10593 ,  Y10S428/90 ,  Y10S430/146 ,  Y10T428/22 ,  Y10T428/31678

    摘要： A magneto-optic memory element includes a GdTbFe recording layer (16) sandwiched between a pair of transparent AIN dielectric layers (12, 14). At least one of the pair of transparent AIN dielectric layers is extended to have a size larger than the GdTbFe recording layer so as to cover the periphery edge of the GdTbFe recording layer, thereby protecting the GdTbFe recording layer from the oxygen and moisture. An Al-Ni alloy reflection film (18) is formed on one of the pair of transparent AIN dielectric layers in order to increase the apparent Kerr rotation angle produced by the magneto-optic memory element.

    摘要翻译： 磁光存储元件包括夹在一对透明的AIN介电层（12,14）之间的GdTbFe记录层（16）。 一对透明AIN电介质层中的至少一个被延伸成具有比GdTbFe记录层更大的尺寸，以覆盖GdTbFe记录层的周缘，从而保护GdTbFe记录层免受氧气和湿气的影响。 为了增加由磁光存储元件产生的表观克耳旋转角度，在一对透明的AIN介电层中的一个上形成Al-Ni合金反射膜（18）。