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    Servo pattern transfer
    13.
    发明授权
    Servo pattern transfer 有权
    伺服模式转移

    公开(公告)号：US08441754B2

    公开(公告)日：2013-05-14

    申请号：US12485150

    申请日：2009-06-16

    Applicant: Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

    Inventor： Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

    IPC: G11B5/596

    CPC classification number: G11B5/865 ,  G11B5/59638

    Abstract: A servo master having a pattern capable of being magnetically transferred as a servo pattern to a magnetic recording medium, wherein the servo master is formed of a material having a magnetic anisotropic constant perpendicular to a surface of the magnetic recording medium. The magnetic transfer method can include preparing a servo master patterned with a servo pattern to be formed on a magnetic recording medium, and arranging the servo master on the magnetic recording medium and applying an external magnetic field to the servo master in a first direction perpendicular to a recording surface of the magnetic recording medium, and in a second direction parallel to the recording surface of the magnetic recording medium.

    Abstract translation: 一种具有能够作为伺服图案磁转印到磁记录介质的图案的伺服主机，其中伺服主机由具有垂直于磁记录介质表面的磁各向异性常数的材料形成。 磁转移方法可以包括制备图案化的伺服母模，以形成在磁记录介质上的伺服模式，并将伺服主机布置在磁记录介质上，并在与伺服主机垂直的第一方向上向伺服主机施加外部磁场 磁记录介质的记录表面，并且在平行于磁记录介质的记录表面的第二方向上。

    Magnetic packet memory storage devices, memory systems including such devices, and methods of controlling such devices
    15.
    发明授权
    Magnetic packet memory storage devices, memory systems including such devices, and methods of controlling such devices 失效
    磁性分组存储器存储设备，包括这种设备的存储器系统以及控制这些设备的方法

    公开(公告)号：US08050074B2

    公开(公告)日：2011-11-01

    申请号：US12658807

    申请日：2010-02-16

    Applicant: Ho-jung Kim ,  Chul-woo Park ,  Sang-beom Kang ,  Jong-wan Kim ,  Hyun-ho Choi ,  Young-pil Kim ,  Sung-chul Lee

    Inventor： Ho-jung Kim ,  Chul-woo Park ,  Sang-beom Kang ,  Jong-wan Kim ,  Hyun-ho Choi ,  Young-pil Kim ,  Sung-chul Lee

    IPC: G11C19/00

    CPC classification number: G11C11/15 ,  G11C5/04

    Abstract: A memory device is comprised of a magnetic structure that stores information in a plurality of domains of the magnetic structure. A write unit writes information to at least one of the plurality of domains of the magnetic structure by applying a write current to the magnetic structure in response to a control signal. A read unit reads information from at least one of the plurality of domains of the magnetic structure by applying a read current to the magnetic structure in response to the control signal. A domain wall movement control unit is coupled to a portion of the magnetic structure and moves information stored in the plurality of domains in the magnetic structure to other domains in the magnetic structure in response to the control signal. The write unit, the read unit and the domain wall movement control unit are all coupled to the same control signal line that provides the control signal.

    Abstract translation: 存储器件由将磁信息存储在磁结构的多个域中的磁结构构成。 写单元响应于控制信号向磁结构施加写入电流，将信息写入磁结构的多个域中的至少一个。 读取单元通过响应于控制信号向磁性结构施加读取电流，从磁性结构的多个域中的至少一个域读取信息。 畴壁移动控制单元耦合到磁结构的一部分，并且响应于控制信号将存储在磁结构中的多个域中的信息移动到磁结构中的其他区域。 写单元，读单元和域壁移动控制单元都耦合到提供控制信号的相同控制信号线。

    Bit patterned medium
    16.
    发明授权
    Bit patterned medium 有权
    位图形介质

    公开(公告)号：US07948700B2

    公开(公告)日：2011-05-24

    申请号：US12127390

    申请日：2008-05-27

    Applicant: Hoo-san Lee ,  Sung-chul Lee ,  Hoon-sang Oh

    Inventor： Hoo-san Lee ,  Sung-chul Lee ,  Hoon-sang Oh

    IPC: G11B5/09

    CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

    Abstract: Provided is a bit patterned medium including bridges which induce exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The bridges and the bits are integrally formed with each other. The bits are locally connected by the bridges. A magnetostatic force for each bit is reduced due to an exchange coupling between adjacent bits, thereby reducing a switching field distribution of the bits.

    Abstract translation: 提供了包括桥的位图案化介质，其引起相邻位之间的交换耦合，以便减少由位的不同磁化方向引起的开关场差。 桥和钻头彼此一体形成。 这些位由桥接器本地连接。 由于相邻位之间的交换耦合，每个位的静磁力减小，从而减小位的开关场分布。

    Data storage device using magnetic domain wall movement and method of operating the same
    18.
    发明授权
    Data storage device using magnetic domain wall movement and method of operating the same 有权
    使用磁畴壁运动的数据存储装置及其操作方法

    公开(公告)号：US07817461B2

    公开(公告)日：2010-10-19

    申请号：US11752397

    申请日：2007-05-23

    Applicant: Sung-chul Lee ,  Sung-hoon Choa ,  Yong-su Kim

    Inventor： Sung-chul Lee ,  Sung-hoon Choa ,  Yong-su Kim

    IPC: G11C11/00

    CPC classification number: G11C11/14 ,  G11B5/66 ,  G11C19/0808

    Abstract: Provided are a data storage device using a magnetic domain wall movement and a method of operating the data storage device. The data storage device includes a magnetic layer including a plurality of magnetic domains, first and second ferromagnetic pinned layers formed on lower and upper surfaces of the magnetic layer, respectively, and having opposite magnetization directions, first and second insulating spacers interposed between the first and second ferromagnetic pinned layers and the magnetic layer, respectively, and an energy supplying unit applying energy to the magnetic layer for a magnetic domain wall movement.

    Abstract translation: 提供了使用磁畴壁移动的数据存储装置和操作数据存储装置的方法。 数据存储装置包括：包含多个磁畴的磁性层，分别形成在磁性层的下表面和上表面上并且具有相反的磁化方向的第一和第二铁磁固定层，第一和第二绝缘垫片插入在第一和 第二铁磁钉扎层和磁性层，以及向磁性层施加能量以供磁畴壁运动的能量供给单元。

    SERVO MASTER AND MAGNETIC TRANSFER METHOD USING THE SAME
    19.
    发明申请
    SERVO MASTER AND MAGNETIC TRANSFER METHOD USING THE SAME 有权
    伺服主机和使用它的磁转移方法

    公开(公告)号：US20090316297A1

    公开(公告)日：2009-12-24

    申请号：US12485150

    申请日：2009-06-16

    Applicant: Hoo-san LEE ,  Sok-hyun Kong ,  Sung-chul Lee

    Inventor： Hoo-san LEE ,  Sok-hyun Kong ,  Sung-chul Lee

    IPC: G11B5/596

    CPC classification number: G11B5/865 ,  G11B5/59638

    Abstract: A servo master having a pattern capable of being magnetically transferred as a servo pattern to a magnetic recording medium, wherein the servo master is formed of a material having a magnetic anisotropic constant perpendicular to a surface of the magnetic recording medium. The magnetic transfer method can include preparing a servo master patterned with a servo pattern to be formed on a magnetic recording medium, and arranging the servo master on the magnetic recording medium and applying an external magnetic field to the servo master in a first direction perpendicular to a recording surface of the magnetic recording medium, and in a second direction parallel to the recording surface of the magnetic recording medium.

    Abstract translation: 一种具有能够作为伺服图案磁转印到磁记录介质的图案的伺服主机，其中伺服主机由具有垂直于磁记录介质表面的磁各向异性常数的材料形成。 磁转移方法可以包括制备图案化的伺服母模，以形成在磁记录介质上的伺服模式，并将伺服主机布置在磁记录介质上，并在与伺服主机垂直的第一方向上向伺服主机施加外部磁场 磁记录介质的记录表面，并且在平行于磁记录介质的记录表面的第二方向上。

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