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174 条记录 (耗时 0.022 秒)

    Magneto-optical recording medium and storage device
    2.
    发明公开
    Magneto-optical recording medium and storage device 审中-公开
    一种磁光记录介质和存储设备

    公开(公告)号：EP1315159A3

    公开(公告)日：2005-12-14

    申请号：EP02252242.9

    申请日：2002-03-27

    申请人： FUJITSU LIMITED

    发明人： Hosokawa, Tetsuo, c/o Yamagata Fujitsu Limited

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10593 ,  G11B11/10515

    摘要： An optical magnetic recording medium in which reproduction is implemented by transcribing a mark to a reproducing layer (13) based on a magnetic field from a recording layer, includes a reproducing layer (13), a non-magnetic layer (15), and a recording layer including a first recording layer (16) and a second recording layer (17), wherein the reproducing layer (13), the non-magnetic layer (15), and the recording layer including the first recording layer (16) and the second recording layer (17) are stacked in this sequence; the reproducing layer (13) has a property of an easy magnetization in an in-plane direction at room temperature; the first recording layer (16) and the second recording layer (17) each has a property of easy magnetization in a vertical direction to the in-plane direction at room temperature in a single layer; and there is a relation of M2

    Magneto-optical memory medium and reproducing method thereof
    3.
    发明公开
    Magneto-optical memory medium and reproducing method thereof 失效
    磁光存储介质及其再现方法

    公开(公告)号：EP1420400A1

    公开(公告)日：2004-05-19

    申请号：EP04003324.3

    申请日：1998-03-06

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Takahashi, Akira ,  Mieda, Michinobu ,  Iketani, Naoyasu ,  Mori, Go ,  Nakajima, Junsaku ,  Murakami, Yoshiteru ,  Hirokane, Junji

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586 ,  G11B11/10593

    摘要： A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light beam; a recording layer, which is magnetostatically coupled to the reproducing layer; and an in-plane magnetized layer, provided adjacent to the recording layer, which has a Curie temperature at the above-mentioned predetermined temperature. In this medium, at temperatures below the predetermined temperature, signals recorded at high density in the recording layer are masked, and the above-mentioned magnetostatic coupling is suppressed, by magnetic masking by the in-plane magnetized layer. At temperatures above the predetermined temperature, however, within a domain forming part of the in-plane magnetized layer, the recording layer and the reproducing layer are magnetostatically coupled, and a recording bit of the recording layer is copied and expanded to a magnetic domain in the reproducing layer. Accordingly, with this medium, by reproducing from an expanded magnetic domain of the reproducing layer, even information from recording bits recorded at high density can be reproduced with high signal quality.

    摘要翻译： 根据本发明的磁光存储介质包括一个再现层，当再现光束加热到预定温度以上时，该再现层具有在室温下的平面内磁化和垂直磁化; 记录层，其静磁耦合到所述再现层; 以及与记录层相邻设置的居里面磁化层，其具有在上述预定温度下的居里温度。 在该介质中，在低于预定温度的温度下，通过面内磁化层的磁屏蔽，在记录层中以高密度记录的信号被掩蔽，并且上述静磁耦合被抑制。 然而，在高于预定温度的温度下，在形成平面内磁化层的一部分的区域内，记录层和再现层被静磁耦合，并且记录层的记录位被复制并扩展到 再现层。 因此，利用该介质，通过从再现层的扩展磁畴进行再现，可以以高信号质量再现来自高密度记录的记录位的偶数信息。

    Magneto-optical storage medium and recording method thereof
    6.
    发明公开
    Magneto-optical storage medium and recording method thereof 审中-公开
    Magneto-optisches Speichermedium und Aufzeichnungsverfahrendafür

    公开(公告)号：EP1098306A2

    公开(公告)日：2001-05-09

    申请号：EP00123730.4

    申请日：2000-10-31

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Hirokane, Junji ,  Iwata, Noboru

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10591 ,  G11B11/10508 ,  G11B11/10584 ,  G11B11/10593

    摘要： The magneto-optical storage medium in accordance with the present invention includes: a first magnetic layer (4) constituted by a perpendicularly magnetized film; a second magnetic layer (3) constituted by a perpendicularly magnetized film so as to be exchange coupled to the first magnetic layer (4); and a third magnetic layer (1) magnetostatically coupled to the first and second magnetic layers at elevated temperatures, magnetization of the first magnetic layer (4) being copied to the third magnetic layer (1), wherein the second magnetic layer (3) produces a greater peak net magnetization and has a higher Curie temperature than the first magnetic layer (4). The structure enhances magnetostatic coupling forces acting between the first magnetic layer (4) and the second magnetic layer (3) and also between the first magnetic layer (4) and the third magnetic layer (1). Therefore, the magneto-optical medium is capable of stably copying a weaker magnetization in a magnetic recording domain to the third magnetic layer (reproduction layer) (1) and reproduce information stored therein. A wider reproduction power margin is thus achieved. Besides, since the second magnetic layer (3) serves to produce a leaking magnetic flux to establish magnetostatic coupling to the third magnetic layer (1), and the first magnetic layer (4) serves to perform a satisfactory recording state, the super-resolution magneto-optical disk is realized with satisfactory recording capabilities.

    摘要翻译： 根据本发明的磁光存储介质包括：由垂直磁化膜构成的第一磁性层（4）; 第二磁性层（3），由垂直磁化膜构成，以便与第一磁性层（4）交换耦合; 以及在升高的温度下静磁耦合到第一和第二磁性层的第三磁性层（1），第一磁性层（4）的磁化被复制到第三磁性层（1），其中第二磁性层（3）产生 具有较高的峰值净磁化强度，并具有比第一磁性层（4）更高的居里温度。 该结构增强了作用在第一磁性层（4）和第二磁性层（3）之间以及第一磁性层（4）和第三磁性层（1）之间的静磁耦合力。 因此，磁光介质能够将磁记录域中较弱的磁化稳定地复制到第三磁性层（再现层）（1）并再现存储在其中的信息。 从而实现更宽的再现功率余量。 此外，由于第二磁性层（3）用于产生泄漏磁通以建立与第三磁性层（1）的静磁耦合，并且第一磁性层（4）用于执行令人满意的记录状态，所以超分辨率 实现具有令人满意的记录能力的磁光盘。

    Magneto-optical reproducing apparatus
    7.
    发明公开
    Magneto-optical reproducing apparatus 失效
    磁光重放装置

    公开(公告)号：EP1020854A3

    公开(公告)日：2000-12-20

    申请号：EP00200724.3

    申请日：1994-03-30

    申请人： CANON KABUSHIKI KAISHA

    发明人： Shiratori, Tsutomu ,  Hiroki, Tomoyuki

    IPC分类号： G11B11/105

    CPC分类号： G11B11/10582 ,  G11B11/10504 ,  G11B11/10506 ,  G11B11/10508 ,  G11B11/10515 ,  G11B11/10528 ,  G11B11/10543 ,  G11B11/10584 ,  G11B11/10586 ,  G11B11/10593 ,  Y10S428/90 ,  Y10T428/24942

    摘要： A magneto-optical reproducing apparatus for reproducing information from a magneto-optical medium (86) comprising two light sources (81,82) at different wavelengths emitting two beams that produce two spots, the first one being within the second one, creating a temperature gradient on the magneto-optical medium, separating means (87) for separating the two beams after reflection from the medium and detecting means for producing an information signal from the first beam.

    摘要翻译： 一种用于从磁光介质（86）再现信息的磁光再现装置（86），该磁光介质包括两个发射两个光束的不同波长的光源（81,82），两个光束产生两个光点，第一个光源在第二个光点内， 磁光介质上的梯度;分离装置（87），用于在从介质反射后分离两个光束;以及检测装置，用于从第一光束产生信息信号。

    MAGNETO-OPTIC RECORDING MEDIUM AND SIGNAL REPRODUCING METHOD
    8.
    发明公开
    MAGNETO-OPTIC RECORDING MEDIUM AND SIGNAL REPRODUCING METHOD 有权
    MAGNETO-OPTISCHES AUFZEICHNUNGSMEDIUM UND SIGNALWIEDERGABEVERFAHREN

    公开(公告)号：EP1052634A1

    公开(公告)日：2000-11-15

    申请号：EP99901200.8

    申请日：1999-01-29

    申请人： Sony Corporation

    发明人： ARATANI, Katsuhisa, Sony Corporation

    IPC分类号： G11B11/10

    CPC分类号： G11B11/10593 ,  G11B11/10515 ,  Y10T428/24942

    摘要： A magneto-optical recording medium incorporating a recording layer constituted by a multi-layered magnetic film composed of at least three magnetic layers. Domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light are moved toward the center of the spot in a forward portion in a direction, in which the reproducing light spot is moved, so that a recording magnetic domain is enlarged, and movement of the domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light is inhibited in a rear portion in the direction in which the reproducing light spot is moved. To inhibit movement of the domain walls of the magnetic layer adjacent to the portion irradiated with reproducing light, for example, insertion of a magnetic layer having a predetermined magnetic characteristic into a space between a displacement layer and a switch layer is required.

    摘要翻译： 一种磁光记录介质，其包括由至少三个磁性层构成的多层磁性膜构成的记录层。 与再现光照射的部分相邻的磁性层的畴壁朝向再现光点移动的方向的前方向的点的中心移动，使得记录磁畴扩大，并且移动 在与再现光照射的部分相邻的磁性层的畴壁的后部，在再现光点移动的方向上被抑制。 为了抑制与再现光照射的部分相邻的磁性层的畴壁的移动，例如需要将具有预定磁特性的磁性层插入到位移层和开关层之间的空间中。

    Magneto-optical memory medium and reproducing method thereof
    9.
    发明公开
    Magneto-optical memory medium and reproducing method thereof 失效
    一种磁光存储介质，以及相关联的再现方法

    公开(公告)号：EP0863504A3

    公开(公告)日：2000-08-30

    申请号：EP98104044.7

    申请日：1998-03-06

    申请人： Sharp Kabushiki Kaisha

    发明人： Takahashi, Akira ,  Mieda, Michinobu ,  Iketani, Naoyasu ,  Mori, Go ,  Nakajima, Junsaku ,  Murakami, Yoshiteru ,  Hirokane, Junji

    IPC分类号： G11B11/10

    CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10586 ,  G11B11/10593

    摘要： A magneto-optical memory medium according to the present invention comprises a reproducing layer, which has in-plane magnetization at room temperature and perpendicular magnetization when heated to above a predetermined temperature by a reproducing light beam; a recording layer, which is magnetostatically coupled to the reproducing layer; and an in-plane magnetized layer, provided adjacent to the recording layer, which has a Curie temperature at the above-mentioned predetermined temperature. In this medium, at temperatures below the predetermined temperature, signals recorded at high density in the recording layer are masked, and the above-mentioned magnetostatic coupling is suppressed, by magnetic masking by the in-plane magnetized layer. At temperatures above the predetermined temperature, however, within a domain forming part of the in-plane magnetized layer, the recording layer and the reproducing layer are magnetostatically coupled, and a recording bit of the recording layer is copied and expanded to a magnetic domain in the reproducing layer. Accordingly, with this medium, by reproducing from an expanded magnetic domain of the reproducing layer, even information from recording bits recorded at high density can be reproduced with high signal quality.