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    Apparatus for applying bias magnetic field including a rotatable magnet and a plurality of coils for controlling the rotation of the magnet
    2.
    发明授权
    Apparatus for applying bias magnetic field including a rotatable magnet and a plurality of coils for controlling the rotation of the magnet 失效
    用于施加偏置磁场的装置，包括可旋转磁体和用于控制磁体旋转的多个线圈

    公开(公告)号：US5351221A

    公开(公告)日：1994-09-27

    申请号：US111017

    申请日：1993-08-24

    申请人： Takehide Ohno

    发明人： Takehide Ohno

    IPC分类号： G11B11/105 ,  G11B5/03 ,  G11B11/14 ,  G11B13/04

    CPC分类号： G11B11/10595 ,  G11B11/1056

    摘要： An apparatus for applying a bias magnetic field has a magnet rotatably supported around a rotational axis parallel to a face of a magnetooptic disk and magnetized in a direction perpendicular to the rotational axis; a coil section for controlling the rotation of the magnet by flowing a driving electric current therethrough; and a first coil constituting the coil section and having a first portion parallel to the rotational axis and located on a side opposite to the magnetooptic disk with respect to the magnet, the first coil further having a second portion parallel to the rotational axis and arranged on a side of the magnet in a position near the magnetooptic disk in comparison with the rotational axis. The first coil may have a third portion for connecting both ends of the first and second portions. The coil section may have a second coil constituting the coil section and constructed such that the first and second coils are approximately arranged symmetrically with respect to a plane including the rotational axis and perpendicular to the face of the magnetooptic disk. Another bias magnetic field applying apparatus is also shown. The bias magnetic field applying apparatus may have an auxiliary coil for preventing deadlock of the magnet.

    摘要翻译： 用于施加偏磁场的装置具有围绕平行于磁光盘的旋转轴线可旋转地支撑并且在垂直于旋转轴线的方向上被磁化的磁体; 线圈段，用于通过使驱动电流流过其来控制磁体的旋转; 以及构成所述线圈部的第一线圈，具有与所述旋转轴平行的第一部分，并且位于与所述磁光盘相对的一侧，所述第一线圈还具有平行于所述旋转轴线的第二部分，并且布置在 磁体的一侧与旋转轴相比位于磁光盘附近。 第一线圈可以具有用于连接第一和第二部分的两端的第三部分。 线圈部分可以具有构成线圈部分的第二线圈，并且构造成使得第一和第二线圈相对于包括旋转轴线并且垂直于磁光盘的面的平面对称地大致布置。 还示出了另一个偏置磁场施加装置。 偏置磁场施加装置可以具有用于防止磁体死锁的辅助线圈。

    Magneto-optical recording medium having pairs of mutually corresponding recording segments, and apparatus for recording information on the medium
    3.
    发明授权
    Magneto-optical recording medium having pairs of mutually corresponding recording segments, and apparatus for recording information on the medium 失效
    具有相互对应的记录段对的磁光记录介质，以及用于在介质上记录信息的装置

    公开(公告)号：US4807204A

    公开(公告)日：1989-02-21

    申请号：US070346

    申请日：1987-07-06

    申请人： Shuzo Mizutani ,  Riki Matsuda ,  Kazunari Taki ,  Yutaka Hattori ,  Kazuyuki Miyaki ,  Shinichi Hirahata

    发明人： Shuzo Mizutani ,  Riki Matsuda ,  Kazunari Taki ,  Yutaka Hattori ,  Kazuyuki Miyaki ,  Shinichi Hirahata

    IPC分类号： G11B11/105 ,  G11B19/04 ,  G11B11/14 ,  G11B13/04

    CPC分类号： G11B19/04 ,  G11B11/10517 ,  G11B11/10552 ,  G11B11/10554 ,  G11B11/10582 ,  G11B11/10595

    摘要： A magneto-optical recording apparatus for writing information on a magneto-optical recording medium having at least one pair of magneto-optical storage layers each pair consisting of a first and a second storage layer which have at least one pair of corresponding recording segments, each pair of mutually corresponding recording segments consisting of a first recording segment provided on the first storage layer and a second recording segment provided on the second storage layer. The apparatus includes a first and a second writing/erasing head for writing and erasing information on the first and second storage layers, and a recording controller for activating one of the first and second writing/erasing heads to erase previous information already recorded on corresponding one of the first and second recording segments, while activating the other head to write first new information on the other of the first and second recording segments. Upon reception of a command to write second new information, the recording control means activating the above-indicated other head to erase the first new information recorded on the above-indicated other recording segment, while activating the above-indicated one head to write the second new information on the above-indicated one recording segment.

    摘要翻译： 一种用于在具有至少一对磁光存储层的磁光记录介质上写入信息的磁光记录装置，每对磁光存储层由具有至少一对对应的记录段的第一和第二存储层组成， 一对相互对应的记录段，其由设置在第一存储层上的第一记录段和设置在第二存储层上的第二记录段组成。 该装置包括用于在第一和第二存储层上写入和擦除信息的第一和第二写/擦除头，以及用于激活第一和第二写/擦除头之一以擦除已经记录在相应的一个上的先前信息的记录控制器 的第一和第二记录段，同时激活另一个头以在第一和第二记录段的另一个上写入第一新信息。 在接收到写入第二新信息的命令时，记录控制装置启动上述其他头以擦除记录在上述另一个记录段上的第一新信息，同时激活上述一个头以写入第二个 关于上述一个记录段的新信息。

    Nonvolatile corruption resistent magnetic memory and method thereof
    5.
    发明授权
    Nonvolatile corruption resistent magnetic memory and method thereof 有权
    非挥发性腐蚀磁记忆及其方法

    公开(公告)号：US09047881B2

    公开(公告)日：2015-06-02

    申请号：US13725473

    申请日：2012-12-21

    申请人： U.S. Army Research Laboratory

    发明人： Alan S. Edelstein ,  Jonathan R. Petrie

    IPC分类号： G11B5/66 ,  G11B5/09 ,  G11B5/33 ,  G11C11/16 ,  G11B11/14 ,  G11B11/03

    CPC分类号： G11B5/09 ,  G11B5/33 ,  G11B5/332 ,  G11B11/14 ,  G11C11/16 ,  G11C11/1673 ,  G11C11/1697

    摘要： A method and system for storing information in a nonvolatile memory comprising: a substrate comprising magnetic material operatively associated therewith, the magnetic material having at least one first portion of low permeability and at least one second portion of high permeability; a reader comprising a sensor for reading information by measuring the magnetic permeability for the at least one first portion and the at least one second portion; whereby the at least one first and second portions are subjected to a magnetic probe field from one of an external source, the sensor, or a combination of an external source and the sensor.

    摘要翻译： 一种用于将信息存储在非易失性存储器中的方法和系统，包括：包括与其可操作地相关联的磁性材料的衬底，所述磁性材料具有至少一个低透过率的第一部分和至少一个第二部分的高磁导率; 读取器，包括用于通过测量所述至少一个第一部分和所述至少一个第二部分的磁导率来读取信息的传感器; 由此至少一个第一和第二部分经受来自外部源，传感器或外部源和传感器的组合中的一个的磁探针场。

    Method and apparatus for reading a non-volatile memory using a spin torque oscillator
    6.
    发明授权
    Method and apparatus for reading a non-volatile memory using a spin torque oscillator 有权
    使用自旋扭矩振荡器读取非易失性存储器的方法和装置

    公开(公告)号：US09030780B2

    公开(公告)日：2015-05-12

    申请号：US13717745

    申请日：2012-12-18

    申请人： U.S. Army Research Laboratory

    发明人： Alan S. Edelstein

    IPC分类号： G11B5/33 ,  G11B5/09 ,  G11C11/16 ,  G11B11/14

    CPC分类号： G11B5/09 ,  G11B5/33 ,  G11B5/332 ,  G11B11/14 ,  G11C11/16 ,  G11C11/1673 ,  G11C11/1697

    摘要： A method and apparatus for reading electronic memory comprising a current source, a spin transfer oscillator, an external field source, coupled to the current source, for generating an RF signal, the spin torque oscillator positioned proximate a magnetic media comprising a plurality of bit regions of varying magnetic permeability, wherein a frequency of the RF signal varies in response to the permeability of a bit region in the plurality of bit regions being proximate the spin torque oscillator.

    摘要翻译： 一种用于读取电子存储器的方法和装置，包括耦合到电流源的电流源，自旋转移振荡器，外部场源，用于产生RF信号，所述自旋扭矩振荡器位于磁性介质附近，该磁性介质包括多个位区域 其中所述RF信号的频率响应于所述多个比特区域中靠近所述自旋扭矩振荡器的比特区域的磁导率而变化。

    Magneto-optical recorder with small-sized, low-powered electromagnetic coil
    9.
    发明授权
    Magneto-optical recorder with small-sized, low-powered electromagnetic coil 失效
    具有小型，低功率电磁线圈的磁光记录仪

    公开(公告)号：US4803674A

    公开(公告)日：1989-02-07

    申请号：US932578

    申请日：1986-11-20

    申请人： Takeshi Nakao ,  Yutaka Akiba

    发明人： Takeshi Nakao ,  Yutaka Akiba

    IPC分类号： G11B5/02 ,  G11B11/10 ,  G11B11/105 ,  G11B11/14 ,  G11B13/04

    CPC分类号： G11B11/10552 ,  G11B11/10536

    摘要： A magneto-optical recorder is disclosed in which an external magnetic field required for recording and erasing can be produced by a small-sized electromagnetic coil having a small magneto-motive force. The electromagnetic coil is made up of a magnetic core and a coil winding, and the outer peripheral portion of the coil winding other than that peripheral portion thereof which confronts a recording medium, is covered by a core material. A magnetic field emanating from the electromagnetic coil spreads in a narrow space, and can be applied to the recording medium with large intensity even when the electromagnetic coil has a small magneto-motive force. In the recorder, a magnetic body is disposed such that the electromagnetic coil and the magnetic body face each other, to concentrate the magnetic field generated by the electromagnetic coil, to the vicinity of that portion of the recording medium which is irradiated with a light spot. The length of the electromagnetic coil is made equal to or greater than the length of the recording area of the recording medium, to apply a substantially uniform magnetic field to the whole recording area without moving the electromagnetic coil.

    摘要翻译： 公开了一种磁光记录仪，其中通过具有小磁力的小型电磁线圈可以产生用于记录和擦除所需的外部磁场。 电磁线圈由磁芯和线圈绕组构成，除了与记录介质相对的其周边部分之外的线圈绕组的外周部分被芯材覆盖。 从电磁线圈发出的磁场在狭窄的空间中扩展，即使当电磁线圈具有小的磁力时也能够以大的强度施加于记录介质。 在记录器中，磁体被布置成使得电磁线圈和磁体彼此面对，以将由电磁线圈产生的磁场集中到被照射光斑的记录介质的那部分附近 。 使电磁线圈的长度等于或大于记录介质的记录区域的长度，以在不移动电磁线圈的情况下将整个记录区域施加基本均匀的磁场。