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1.发明授权Disk drive using non-volatile cache when garbage collecting log structured writes 有权磁盘驱动器使用非易失性缓存时垃圾收集日志结构化写入公开(公告)号：US09563397B1
公开(公告)日：2017-02-07
申请号：US12774643
申请日：2010-05-05
CPC分类号： G06F5/065 , G06F5/10 , G06F12/0246 , G06F12/0866 , G06F2212/1016 , G06F2212/1041 , G06F2212/222 , G06F2212/702 , G06F2212/7201 , G06F2212/7205
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, each track comprising a plurality of data sectors. A circular buffer is defined comprising a plurality of the tracks. During a garbage collection operation, write data is read from previously written valid data sectors corresponding to a tail of the circular buffer and stored in a non-volatile cache. During a flush operation, the write data is flushed from the non-volatile cache to the disk.
摘要翻译： 公开了一种磁盘驱动器，其包括在包括多个磁道的磁盘上启动的磁头，每个磁道包括多个数据扇区。 定义包括多个轨道的循环缓冲器。 在垃圾收集操作期间，从与循环缓冲器的尾部相对应的先前写入的有效数据扇区中读取写入数据并存储在非易失性高速缓存中。 在刷新操作期间，将写入数据从非易失性缓存刷新到磁盘。
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2.发明授权公开(公告)号：US08351307B1
公开(公告)日：2013-01-08
申请号：US12794692
申请日：2010-06-04
IPC分类号： G11B11/00
CPC分类号： G11B5/314 , G11B5/6088 , G11B2005/0021
摘要： A near field transducer (NFT) for use in an energy assisted magnetic recording (EAMR) head and configured to direct energy to a recording media is disclosed. The NFT comprises a disk section; and a pin section extending towards an air bearing surface (ABS) from the disk section. The pin section has a proximal end adjoining the disk section and a distal end opposite to the proximal end and facing the ABS, wherein at least the distal end of the pin section has a non- rectangular cross section in a plane parallel to the ABS.
摘要翻译： 公开了一种用于能量辅助磁记录（EAMR）头并被配置为将能量引导到记录介质的近场传感器（NFT）。 NFT包括磁盘部分; 以及从盘部向空气轴承表面（ABS）延伸的销部分。 销部分具有邻近盘部分的近端和与近端相对的并且面向ABS的远端，其中销部分的至少远端在平行于ABS的平面中具有非矩形截面。
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公开(公告)号：US08320219B1
公开(公告)日：2012-11-27
申请号：US12815934
申请日：2010-06-15
IPC分类号： G11B11/00
CPC分类号： G11B5/6088 , G11B5/314 , G11B2005/0021
摘要： An energy assisted magnetic recording (EAMR) head for writing to a recording media is disclosed. The EAMR head includes a write pole for providing a magnetic field for writing to the recording media; and a near field transducer disposed adjacent to the write pole and comprising a disk section and a pin section extending towards an air bearing surface (ABS) from the disk section. At least a portion of the pin section is electrically isolated from the write pole by an insulator material.
摘要翻译： 公开了一种用于写入记录介质的能量辅助磁记录（EAMR）头。 EAMR头包括写磁极，用于提供用于写入记录介质的磁场; 以及靠近所述写入极设置的近场换能器，并且包括盘部分和从所述盘部向空气轴承表面（ABS）延伸的销部分。 引脚部分的至少一部分通过绝缘体材料与写入极电隔离。
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4.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
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。
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5.发明授权Energy assisted magnetic recording medium capable of suppressing high DC readback noise 有权能量辅助磁记录介质能够抑制高回波的高噪声公开(公告)号：US08743666B1
公开(公告)日：2014-06-03
申请号：US13042840
申请日：2011-03-08
IPC分类号： G11B11/00
CPC分类号： G11B5/64 , G11B5/00 , G11B5/66 , G11B5/82 , G11B20/10481 , G11B2005/0021
摘要： A perpendicular magnetic recording (PMR) disk used in energy assisted magnetic recording drives is described. The PMR disk includes a substrate, a magnetic recording layer disposed above the substrate, an exchange coupling layer disposed above the magnetic recording layer, and a capping layer disposed above the exchange coupling layer. The capping layer has a Curie temperature greater than the Curie temperature of the magnetic recording layer.
摘要翻译： 描述了用于能量辅助磁记录驱动器的垂直磁记录（PMR）盘。 PMR盘包括衬底，设置在衬底上的磁记录层，设置在磁记录层上方的交换耦合层和设置在交换耦合层上方的覆盖层。 封盖层的居里温度大于磁记录层的居里温度。
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公开(公告)号：US20110043941A1
公开(公告)日：2011-02-24
申请号：US12545692
申请日：2009-08-21
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/7325 , G11B5/743 , G11B5/82 , G11B2005/0021
摘要： A discrete track perpendicular magnetic recording (PMR) disk and a method of fabricating the disk are described. The PMR disk may include a heat sink layer disposed above a substrate, intermediate layers disposed above the heat sink layer, and a magnetic recording layer disposed above the intermediate layers. The magnetic recording layer may have raised and recessed areas, where a heat conductive material may be disposed within one or more of the recessed areas.
摘要翻译： 描述了离散轨道垂直磁记录（PMR）盘和制造盘的方法。 PMR盘可以包括设置在基板上方的散热层，设置在散热层上方的中间层和设置在中间层上方的磁记录层。 磁记录层可以具有凸起和凹陷区域，其中导热材料可以设置在一个或多个凹进区域内。
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7.发明授权Method and system for performing EAMR recording at high density using a large thermal spot size 有权使用大的热点尺寸以高密度进行EAMR记录的方法和系统公开(公告)号：US08385157B1
公开(公告)日：2013-02-26
申请号：US12570975
申请日：2009-09-30
申请人： Eric J. Champion , Francis H. Liu , Adam F. Torabi
发明人： Eric J. Champion , Francis H. Liu , Adam F. Torabi
IPC分类号： G11B11/00
CPC分类号： G11B5/012 , G11B2005/0021
摘要： A method and system for writing data to a media utilizing an energy assisted magnetic recording (EAMR) head are described. The EAMR head includes at least one laser and at least one EAMR transducer. The laser(s) provide energy. The EAMR transducer(s) are coupled with the laser. The EAMR transducer(s) are configured to direct the energy to spot(s) on the media and to write a plurality of tracks of data in a block. The method and system include writing a track of the plurality of tracks on the media within the spot(s) using the EAMR transducer and stepping a track pitch along a particular radial direction on the media. The method and system also include repeating the writing and stepping steps until the plurality of tracks for the block is written.
摘要翻译： 描述了使用能量辅助磁记录（EAMR）头将数据写入介质的方法和系统。 EAMR头包括至少一个激光器和至少一个EAMR传感器。 激光器提供能量。 EAMR传感器与激光器耦合。 EAMR传感器被配置为将能量引导到介质上的点，并将多个数据轨迹写入块中。 该方法和系统包括使用EAMR传感器在所述位置内的介质上写入多个轨道的轨道，并且沿着介质上的特定径向方向对轨道间距进行步进。 方法和系统还包括重复写入和步进步骤，直到写入块的多个轨道为止。
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公开(公告)号：US08611032B2
公开(公告)日：2013-12-17
申请号：US12977658
申请日：2010-12-23
申请人： Eric J. Champion , James N. Malina
发明人： Eric J. Champion , James N. Malina
CPC分类号： G11B5/5582 , G11B5/59694 , G11B20/1879
摘要： Embodiments described herein include systems and methods for correcting for errors caused by disturbances to disk drives, such as disturbances due to shocks or vibrations incident on the drive. For example, systems and methods described herein advantageously correct for corruption to current data as well as previously written. Data may be rewritten in the current track that was being written to when the disturbance occurred, and may also be rewritten to one or more nearby previously written tracks, such as one or more adjacent tracks. According to some aspects, the direction of head deviation is used to select the appropriate corrective action.
摘要翻译： 本文描述的实施例包括用于校正由磁盘驱动器的干扰引起的错误的系统和方法，例如由于在驱动器上的冲击或振动引起的干扰。 例如，本文描述的系统和方法有利地对当前数据以及之前写入的损坏进行校正。 数据可以在发生干扰时正被写入的当前轨道中重写，并且还可以被重写到一个或多个附近的先前写入的轨道，例如一个或多个相邻的轨道。 根据一些方面，头偏差的方向用于选择适当的纠正措施。
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公开(公告)号：US08247095B2
公开(公告)日：2012-08-21
申请号：US12545692
申请日：2009-08-21
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/7325 , G11B5/743 , G11B5/82 , G11B2005/0021
摘要： A discrete track perpendicular magnetic recording (PMR) disk and a method of fabricating the disk are described. The PMR disk may include a heat sink layer disposed above a substrate, intermediate layers disposed above the heat sink layer, and a magnetic recording layer disposed above the intermediate layers. The magnetic recording layer may have raised and recessed areas, where a heat conductive material may be disposed within one or more of the recessed areas.
摘要翻译： 描述了离散轨道垂直磁记录（PMR）盘和制造盘的方法。 PMR盘可以包括设置在基板上方的散热层，设置在散热层上方的中间层和设置在中间层上方的磁记录层。 磁记录层可以具有凸起和凹陷区域，其中导热材料可以设置在一个或多个凹进区域内。
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