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    Disk drive increasing laser power at beginning of write in heat assisted magnetic recording
    3.
    发明授权
    Disk drive increasing laser power at beginning of write in heat assisted magnetic recording 有权
    磁盘驱动器在热辅助磁记录写入开始时增加激光功率

    公开(公告)号：US08441909B1

    公开(公告)日：2013-05-14

    申请号：US13418843

    申请日：2012-03-13

    申请人： Pradeep K. Thayamballi ,  Wentao Yan ,  Matthew R. Gibbons ,  Dennis W. Hogg

    发明人： Pradeep K. Thayamballi ,  Wentao Yan ,  Matthew R. Gibbons ,  Dennis W. Hogg

    IPC分类号： G11B7/00 ,  G11B11/00

    CPC分类号： G11B5/40 ,  G11B5/607 ,  G11B2005/0021

    摘要： A disk drive is disclosed comprising a disk comprising a plurality of data tracks, wherein each data track comprises a plurality of data sectors. A head is actuated over the disk, wherein the head comprises a laser operable to heat the disk while writing data to the disk. When a write command is received to write data to a target data sector of a target data track, the head is positioned over the target data track. When the head reaches the target data sector, a power applied to the laser is increased to above a steady state value to compensate for a high fly height of the head. The power applied to the laser is decreased toward the steady state value while writing at least part of the data to the target data sector.

    摘要翻译： 公开了一种磁盘驱动器，其包括包括多个数据磁道的磁盘，其中每个数据磁道包括多个数据扇区。 头部被驱动在盘上，其中头部包括可操作的加热盘的激光器，同时将数据写入到盘中。 当接收到写入命令以将数据写入目标数据轨道的目标数据扇区时，头部位于目标数据轨道上方。 当头到达目标数据扇区时，施加到激光器的功率增加到高于稳态值，以补偿头的高飞高。 施加到激光器的功率朝向稳态值减小，同时将至少部分数据写入目标数据扇区。

    Energy-assisted magnetic recording head having waveguide capable of providing small beam spots
    7.
    发明授权
    Energy-assisted magnetic recording head having waveguide capable of providing small beam spots 有权
    具有能够提供小束斑的波导的能量辅助磁记录头

    公开(公告)号：US08462592B1

    公开(公告)日：2013-06-11

    申请号：US12948425

    申请日：2010-11-17

    申请人： Christopher B. Wolf ,  Eric J. Champion ,  Kroum S. Stoev ,  Matthew R. Gibbons

    发明人： Christopher B. Wolf ,  Eric J. Champion ,  Kroum S. Stoev ,  Matthew R. Gibbons

    IPC分类号： G11B11/00

    CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

    摘要： A method and system for providing an EAMR transducer is described. The EAMR transducer has an ABS and is coupled with a laser. The EAMR transducer includes a write pole, coil(s), and an energy delivery device. The write pole magnetically writes to the media. The coil(s) energize the write pole. The energy delivery device is optically coupled with the laser and includes a top distal from the ABS, a bottom proximate to the ABS, a first side, and a second side opposite to the first side. The first side has a first apex angle from a normal to the ABS and is reflective. The second side has a second apex angle from the normal and is reflective. The first and second apex angles are each at least three and not more than twenty-five degrees. The first and second sides converge such that the top is wider than the bottom.

    摘要翻译： 描述了一种用于提供EAMR换能器的方法和系统。 EAMR传感器具有ABS并与激光器耦合。 EAMR传感器包括写极，线圈和能量输送装置。 写磁极写入介质。 线圈使写入极点通电。 能量输送装置与激光器光学耦合，并且包括远离ABS的顶部，靠近ABS的底部，第一侧和与第一侧相对的第二侧。 第一侧具有从法线到ABS的第一顶角，并且是反射性的。 第二面具有与法线的第二顶角并且是反射的。 第一和第二顶角各自为至少三个而不多于二十五度。 第一和第二侧会聚，使得顶部比底部更宽。

    Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive
    8.
    发明授权
    Method and system for providing separate write and optical modules in an energy assisted magnetic recording disk drive 有权
    在能量辅助磁记录磁盘驱动器中提供单独写入和光学模块的方法和系统

    公开(公告)号：US08310901B1

    公开(公告)日：2012-11-13

    申请号：US12796806

    申请日：2010-06-09

    申请人： Sharat Batra ,  Adam F. Torabi ,  Matthew R. Gibbons ,  Yugang Wang ,  Kroum S. Stoev

    发明人： Sharat Batra ,  Adam F. Torabi ,  Matthew R. Gibbons ,  Yugang Wang ,  Kroum S. Stoev

    IPC分类号： G11B11/00

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0021

    摘要： An energy assisted magnetic recording (EAMR) transducer coupled with a laser is described. The EAMR transducer has an air-bearing surface (ABS) residing near a media during use. The EAMR transducer includes optical and writer modules. The optical module includes a waveguide and a near field transducer (NFT). The waveguide directs the energy from the laser toward the ABS. The NFT focuses the energy onto the media. The optical and writer modules are physically separate such that no portion of the waveguide is interleaved with a magnetic portion of the writer module. The writer module includes a write pole and coil(s). The write pole includes a pole-tip portion for providing a magnetic field to the media and a yoke. The pole-tip portion has an ABS-facing surface, a sloped surface, and a NFT-facing surface therebetween. The sloped surface is at least twenty-five and not more than sixty-five degrees from the NFT-facing surface.

    摘要翻译： 描述了与激光器耦合的能量辅助磁记录（EAMR）传感器。 在使用过程中，EAMR传感器具有驻留在介质附近的空气轴承表面（ABS）。 EAMR传感器包括光学和写入器模块。 光学模块包括波导和近场换能器（NFT）。 波导将能量从激光器引向ABS。 NFT将能量集中在媒体上。 光学和写入器模块是物理上分离的，使得波导的任何部分与写入器模块的磁性部分交错。 写入器模块包括一个写入极和线圈。 写极包括用于向介质和磁轭提供磁场的极尖部分。 极尖部分具有面向ABS的表面，倾斜表面和它们之间的面向NFT的表面。 倾斜表面距离面向NFT的表面至少二十五度且不超过六十五度。

    Designs of reference cells for magnetic tunnel junction (MTJ) MRAM
    9.
    发明授权
    Designs of reference cells for magnetic tunnel junction (MTJ) MRAM 有权
    磁隧道结（MTJ）MRAM参考电池设计

    公开(公告)号：US06721203B1

    公开(公告)日：2004-04-13

    申请号：US10017647

    申请日：2001-12-12

    申请人： Qiuqun Qi ,  Xizeng Shi ,  Matthew R. Gibbons

    发明人： Qiuqun Qi ,  Xizeng Shi ,  Matthew R. Gibbons

    IPC分类号： G11C1115

    CPC分类号： G11C11/16

    摘要： A reference cell circuit for a magnetic tunnel junction MRAM includes a first magnetic tunnel junction device set to a low resistance state and a second magnetic tunnel junction device set to a high resistance state. A reference cell series unit includes the first magnetic tunnel junction device electrically coupled in series with the second magnetic tunnel junction device. The reference cell series unit further has a first end and a second end with the first end being electrically coupled to a first current source and the second end being electrically coupled to a current sink and a second current source.

    摘要翻译： 用于磁性隧道结MRAM的参考单元电路包括设置为低电阻状态的第一磁性隧道结器件和设置为高电阻状态的第二磁性隧道结器件。 参考单元串联单元包括与第二磁隧道结装置串联电耦合的第一磁性隧道结装置。 参考单元串联单元还具有第一端和第二端，其第一端电耦合到第一电流源，并且第二端电耦合到电流吸收器和第二电流源。

    Method and system for providing a write pole in an energy assisted magnetic recording disk drive
    10.
    发明授权
    Method and system for providing a write pole in an energy assisted magnetic recording disk drive 有权
    在能量辅助磁记录磁盘驱动器中提供写极的方法和系统

    公开(公告)号：US08164855B1

    公开(公告)日：2012-04-24

    申请号：US12614341

    申请日：2009-11-06

    申请人： Matthew R. Gibbons ,  Kroum S. Stoev ,  Yugang Wang ,  Adam F. Torabi ,  Lijie Guan

    发明人： Matthew R. Gibbons ,  Kroum S. Stoev ,  Yugang Wang ,  Adam F. Torabi ,  Lijie Guan

    IPC分类号： G11B5/127

    CPC分类号： G11B5/314 ,  G11B5/3116 ,  G11B2005/0021

    摘要： A method and system for providing an energy assisted magnetic recording (EAMR) transducer coupled with a laser are described. The EAMR transducer has an air-bearing surface (ABS) residing in proximity to a media during use. The method and system include providing waveguide(s), a near-field transducer (NFT), write pole(s), and coil(s). The waveguide(s) direct energy from the laser toward the ABS. The NFT is coupled with the waveguide and focuses the energy onto the media. The write pole(s) include a stitch for providing a magnetic field to the media and a yoke coupled to the stitch. The stitch includes an ABS-facing surface, a sloped surface, and an NFT-facing surface between the ABS-facing and sloped surfaces. The NFT-facing surface is substantially parallel to the NFT. The sloped surface is sloped at least twenty-five and not more than sixty-five degrees with respect to the NFT-facing surface. The coil(s) energize the write pole(s).

    摘要翻译： 描述了一种用于提供与激光器耦合的能量辅助磁记录（EAMR）传感器的方法和系统。 EAMR传感器在使用过程中具有驻留在介质附近的空气轴承表面（ABS）。 该方法和系统包括提供波导，近场换能器（NFT），写极和线圈。 波导将能量从激光器引向ABS。 NFT与波导耦合，并将能量聚焦到介质上。 写极包括用于向介质提供磁场的线圈和耦合到线圈的轭。 该线圈包括面向ABS的表面，倾斜表面和面向ABS和倾斜表面之间的面向NFT的表面。 面向NFT的表面基本上平行于NFT。 倾斜的表面相对于面向NFT的表面倾斜至少二十五度且不超过六十五度。 线圈使写入极点通电。