公开(公告)号：US08189291B2

公开(公告)日：2012-05-29

申请号：US12910488

申请日：2010-10-22

申请人： Chiaoping Ku ,  Fu-Ying Huang ,  Lidu Huang ,  Hitoshi Shindo

发明人： Chiaoping Ku ,  Fu-Ying Huang ,  Lidu Huang ,  Hitoshi Shindo

IPC分类号： G11B17/02

CPC分类号： G11B19/2036

摘要： Approaches for a fluid dynamic bearing (FDB) system for use within a hard-disk drive. A fluid dynamic bearing (FDB) system may comprise an upper conical bearing and a lower conical bearing that are both disposed along a stationary shaft on which a magnetic-recording disk is rotatably mounted. The upper conical bearing and the lower conical bearing may have different cone angles, diameters, and/or lubricants to produce a desired difference in stiffness between the first conical bearing and the second conical bearing. By adjusting characteristics of the fluid dynamic bearing (FDB) system to achieve the desired bearing stiffness ratio, the tendency for the magnetic-recording disks to experience a sustained vibration when the hard-disk drive receives a mechanical shock is reduced. By preventing the magnetic-recording disks from sustained vibration after a mechanical shock, data may be written to and read from the magnetic-recording disks with greater reliability.

摘要翻译： 用于在硬盘驱动器内使用的流体动力轴承（FDB）系统的方法。 流体动力轴承（FDB）系统可以包括沿着固定轴设置的上锥形轴承和下锥形轴承，磁盘记录盘可旋转地安装在固定轴上。 上锥形轴承和下锥形轴承可以具有不同的锥角，直径和/或润滑剂，以在第一锥形轴承和第二锥形轴承之间产生期望的刚度差。 通过调整流体动态轴承（FDB）系统的特性以达到所需的轴承刚度比，减小了磁盘驱动器受到机械冲击时持续振动的趋势。 通过防止磁记录盘在机械冲击之后的持续振动，可以以更高的可靠性将数据写入磁记录盘并从其中读出。

公开(公告)号：US20120105997A1

公开(公告)日：2012-05-03

申请号：US12917837

申请日：2010-11-02

申请人： Lidu Huang ,  Charles Leverne Taylor, JR. ,  Fu-Ying Huang ,  Stephen Leonard Schmidt

发明人： Lidu Huang ,  Charles Leverne Taylor, JR. ,  Fu-Ying Huang ,  Stephen Leonard Schmidt

IPC分类号： G11B5/03

CPC分类号： G11B5/0245 ,  H01F13/006

摘要： Approaches for inducing a magnetic bias in a magnetic recording disk. A biasing apparatus comprises a soft magnetic material member having a shape comprising two opposing recesses, denoted an upper recess and a lower recess. A first magnet is disposed within the upper recess and a second magnet disposed within the lower recess. An air gap exists between the first magnet and the second magnet. An opening in the soft magnetic material member is sized to accommodate at least a portion of the magnetic recording disk between the first magnet and the second magnet. The magnetic field produced by both the first magnetic and the second magnetic flows (a) in the same direction, and (b) perpendicular to the plane of the magnetic recording disk. Using this approach, magnetic material on the disk, such as magnetic islands of a bit pattern media, may be erased and polarized in the same direction.

摘要翻译： 在磁记录盘中引起磁偏置的方法。 偏置装置包括具有包括两个相对凹部的形状的软磁材料构件，其表示为上凹部和下凹部​​。 第一磁体设置在上凹部内，第二磁体设置在下凹部内。 在第一磁体和第二磁体之间存在气隙。 软磁性材料构件中的一个开口的尺寸设置成容纳至少一部分磁记录盘在第一磁体和第二磁体之间。 由第一磁性和第二磁性二者产生的磁场在相同的方向（a）流动，（b）垂直于磁记录盘的平面。 使用这种方法，磁盘上的磁性材料（例如位图形介质的磁岛）可以沿相同方向被擦除和极化。

公开(公告)号：US08081401B1

公开(公告)日：2011-12-20

申请号：US11960474

申请日：2007-12-19

申请人： Lidu Huang ,  Joshua P. Weiher ,  Zakir A. Quabili

发明人： Lidu Huang ,  Joshua P. Weiher ,  Zakir A. Quabili

IPC分类号： G11B5/54 ,  G11B21/22

CPC分类号： G11B5/54 ,  G11B21/22

摘要： A novel actuator latch includes a catch portion interfering with actuator rotation with the latch in a closed position. The latch includes a first stop portion that is in contact with a fixed member with the latch in the closed position. The latch includes a pusher portion that is in contact with the actuator with the latch in the closed position and with the actuator in an extreme rotational position. The latch includes a second stop portion comprising a cantilevered finger having a supported end and a free distal end. The free distal end is in contact with the second fixed member with the latch in the open position. Neither the catch portion nor the pusher portion is disposed on the cantilevered finger.

摘要翻译： 一个新颖的致动器闩锁包括阻挡致动器旋转的止动部分，闩锁处于闭合位置。 闩锁包括与闩锁处于关闭位置的固定构件接触的第一止动部分。 闩锁包括与致动器接触的推动器部分，闩锁处于关闭位置并且致动器处于极端转动位置。 闩锁包括第二止动部分，其包括具有支撑端和自由远端的悬臂指状物。 自由的远端与第二固定构件接触，闩锁处于打开位置。 捕获部分和推动器部分都不设置在悬臂指状物上。

公开(公告)号：US08077432B2

公开(公告)日：2011-12-13

申请号：US12402476

申请日：2009-03-11

申请人： Andrew Hanlon ,  Fu-Ying Huang ,  Lidu Huang ,  Antony Nguyen ,  Hamid Salehizadeh

发明人： Andrew Hanlon ,  Fu-Ying Huang ,  Lidu Huang ,  Antony Nguyen ,  Hamid Salehizadeh

IPC分类号： G11B17/08

CPC分类号： G11B17/0287

摘要： An improved disk stack assembly for a hard disk drive (HDD) includes a generally cylindrical hub with flange having a downward sloping conical flange surface. The conical flange surface is defined between a radially inner circular ridge and a radially outer circular edge. The bottom disk in the stack is in contact with the flange inner circular ridge. The disk stack assembly also includes a disk clamp with a contact surface having a contact rim that is in contact with either the radially inner portion of the top disk in the stack or a spacer ring. The clamp contact rim is located at approximately the same radial distance from the hub's central cylindrical axis as the flange circular ridge so that the clamping force is applied to the disks close to the area where the disk stack is supported on the conical flange surface.

摘要翻译： 用于硬盘驱动器（HDD）的改进的磁盘堆组件包括具有凸缘的大致圆柱形的毂，其具有向下倾斜的锥形凸缘表面。 锥形凸缘表面限定在径向内圆形脊与径向外圆形边缘之间。 堆叠中的底盘与凸缘内圆脊接触。 磁盘堆叠组件还包括具有接触表面的磁盘夹具，该接触表面具有接触边缘，该接触边缘与堆叠中的顶部盘的径向内部部分或间隔环接触。 夹紧接触边缘位于与轮毂的中心圆柱形轴线大致相同的径向距离处，该距离与凸缘圆形脊相同，使得夹紧力被施加到靠近圆盘凸缘表面上的盘堆叠区域附近的盘。

公开(公告)号：US20100232051A1

公开(公告)日：2010-09-16

申请号：US12404254

申请日：2009-03-13

申请人： Lidu Huang ,  Fu-ying Huang ,  Jia-Yang Juang ,  Byron Lengsfield

发明人： Lidu Huang ,  Fu-ying Huang ,  Jia-Yang Juang ,  Byron Lengsfield

IPC分类号： G11B5/02 ,  G11B5/03

CPC分类号： G11B5/0245 ,  G11B2005/0021

摘要： A combined bulk thermal-assister and bulk eraser. The bulk thermal-assister is configured to produce a temperature in a magnetic-recording disk in a hard-disk drive when the hard-disk drive is disposed in the bulk eraser. The temperature is about equal to a second temperature greater than a first temperature of the magnetic-recording disk. The bulk eraser is configured to erase recorded information from the magnetic-recording disk at the second temperature. The second temperature lowers a coercivity of the magnetic-recording disk so that, when recorded information is erased from the magnetic-recording disk at the second temperature, recorded information on the magnetic-recording disk is erased from a second magnetic-recording track in closer proximity to an inside diameter of the magnetic-recording disk than a first magnetic-recording track from which recorded information on the magnetic-recording disk may be erased, if recorded information were erased from the magnetic-recording disk at the first temperature.

摘要翻译： 组合散热助焊剂和批量橡皮擦。 批量散热器被配置为当硬盘驱动器设置在批量擦除器中时在硬盘驱动器中的磁记录盘中产生温度。 温度大约等于大于磁记录盘的第一温度的第二温度。 批量擦除器被配置为在第二温度下擦除来自磁记录盘的记录信息。 第二温度降低磁记录盘的矫顽力，使得当在第二温度下从磁记录盘擦除记录信息时，磁记录盘上的记录信息从更接近的第二磁记录磁道擦除 接近磁记录盘的内径比第一磁记录轨道高，如果在第一温度下从磁记录盘擦除了记录信息，则磁记录盘上的记录信息可被擦除。

公开(公告)号：US20100149679A1

公开(公告)日：2010-06-17

申请号：US12337604

申请日：2008-12-17

申请人： Lidu Huang ,  Fu-Ying Huang

发明人： Lidu Huang ,  Fu-Ying Huang

IPC分类号： G11B5/03

CPC分类号： G11B5/0245

摘要： A bulk eraser for erasing recorded information on a magnetic-recording disk. The bulk eraser includes at least three magnets and a structure magnetically coupled with the at least three magnets to produce magnetic-flux density in a gap. The gap has a first portion, a second portion and a third portion, such that a first magnet and a second magnet are disposed with opposing end poles across the first portion. The at least three magnets and the structure are configured to produce a magnetic-flux density in the second portion sufficient to erase recorded information from a portion of at least one magnetic-recording disk in a disk-stack when a hard-disk drive is inserted into the second portion. In addition, the at least three magnets and the structure are configured to direct the magnetic-flux density in a substantially radial direction of the portion of the magnetic-recording disk in the second portion.

摘要翻译： 用于擦除磁记录盘上记录信息的批量橡皮擦。 本体橡皮擦包括至少三个磁体和与至少三个磁体磁耦合的结构，以在间隙中产生磁通密度。 间隙具有第一部分，第二部分和第三部分，使得第一磁体和第二磁体设置成跨过第一部分的相对端极。 所述至少三个磁体和所述结构被配置为在所述第二部分中产生足够的磁通密度，以便在插入硬盘驱动器时从盘堆叠中的至少一个磁记录盘的一部分擦除记录的信息 进入第二部分。 此外，至少三个磁体和结构构造成在第二部分中引导磁记录盘的部分的大致径向的磁通密度。

公开(公告)号：US20090303637A1

公开(公告)日：2009-12-10

申请号：US12135454

申请日：2008-06-09

申请人： Nils E. Larson ,  John R. Edwards ,  David K. Myers ,  Lidu Huang ,  Scott E. Watson

发明人： Nils E. Larson ,  John R. Edwards ,  David K. Myers ,  Lidu Huang ,  Scott E. Watson

IPC分类号： G11B5/54

CPC分类号： G11B5/54

摘要： A disk drive includes a ramp having a fixed portion that is fixed to the disk drive base, and a guide portion that is not. The guide portion includes a guide surface having a parking region that is in contact with an HGA lift-tab with the disk drive in a non-operational state. The guide surface also has a load/unload region that extends over a disk outer periphery. The guide surface defines a guide surface length that is measured from the parking region to the load/unload region. The ramp also includes a torsionally-compliant member connecting the fixed portion to the guide portion. A distance between the torsionally-compliant member and the parking region, measured approximately parallel to the guide surface length, is less than half the guide surface length. The guide portion is not connected to the fixed portion over at least two-thirds of the guide surface length.

摘要翻译： 磁盘驱动器包括具有固定到盘驱动器底座的固定部分的斜面和不是的导向部分。 引导部分包括具有与盘驱动器处于非操作状态的HGA升降片接触的停车区域的引导表面。 引导表面还具有在盘外周上延伸的加载/卸载区域。 引导表面限定从停车区域到加载/卸载区域测量的引导表面长度。 斜坡还包括将固定部分连接到引导部分的扭转顺应构件。 扭转顺应构件与驻车区域之间的距离大约平行于导向面长度测量的距离小于导向面长度的一半。 引导部分不超过引导表面长度的至少三分之二连接到固定部分。

公开(公告)号：US08553506B2

公开(公告)日：2013-10-08

申请号：US13340147

申请日：2011-12-29

申请人： John Contreras ,  Lidu Huang ,  Erhard Schreck ,  Barry C. Stipe

发明人： John Contreras ,  Lidu Huang ,  Erhard Schreck ,  Barry C. Stipe

IPC分类号： G11B11/00

CPC分类号： G11B5/3133 ,  G11B5/314 ,  G11B5/607 ,  G11B2005/0021

摘要： An apparatus according to one embodiment includes a near-field transducer positioned towards an air bearing surface side of the apparatus; and at least one conductor or circuit for causing heating of the near-field transducer. A method according to one embodiment includes heating the near-field transducer by passing a current through the at least one conductor or circuit; and illuminating the near-field transducer during a write operation, wherein the current does not pass through the at least one conductor or circuit for at least a majority of a time of illumination. Additional embodiments are also presented.

摘要翻译： 根据一个实施例的装置包括朝向装置的空气轴承表面侧定位的近场换能器; 以及用于引起近场换能器加热的至少一个导体或电路。 根据一个实施例的方法包括通过使电流通过至少一个导体或电路来加热近场换能器; 以及在写入操作期间照亮所述近场换能器，其中所述电流在所述照明时间的至少大部分时间内不通过所述至少一个导体或电路。 还提供了另外的实施例。

公开(公告)号：US08509039B1

公开(公告)日：2013-08-13

申请号：US13535499

申请日：2012-06-28

申请人： Lidu Huang ,  Andrew Thomas McCallum ,  Simone Pisana

发明人： Lidu Huang ,  Andrew Thomas McCallum ,  Simone Pisana

IPC分类号： G11B7/085 ,  G11B11/00

CPC分类号： G11B5/65 ,  G11B5/7325 ,  G11B5/746 ,  G11B2005/0021

摘要： A thermally-assisted recording (TAR) disk has an improved insulating layer beneath the chemically-ordered FePt (or CoPt) alloy recording layer. The insulating layer is a solid substitution crystalline alloy MgXO, where the element X is selected from nickel (Ni) and cobalt (Co). The composition of the MgXO crystalline solid substitutional alloy is of the form (Mg(100-y)Xy)O where y is between 10 and 90, and more preferably between 20 and 80. An optional layer of crystalline “pure” MgO may be located between the MgXO layer and the FePt recording layer and in contact with the recording layer, or between an underlayer and the MgXO layer.

摘要翻译： 热辅助记录（TAR）盘在化学有序的FePt（或CoPt）合金记录层下面具有改进的绝缘层。 绝缘层是固体取代结晶合金MgXO，元素X选自镍（Ni）和钴（Co）。 MgXO结晶固体取代合金的组成为（Mg（100-y）Xy）O形式，其中y在10和90之间，更优选在20和80之间。任选的结晶“纯”MgO层可以是 位于MgXO层和FePt记录层之间并与记录层接触，或位于底层与MgXO层之间。

公开(公告)号：US08451696B2

公开(公告)日：2013-05-28

申请号：US13285769

申请日：2011-10-31

申请人： Fu-Ying Huang ,  Lidu Huang ,  Chie Ching Poon ,  Xinjiang Shen ,  Barry Cushing Stipe

发明人： Fu-Ying Huang ,  Lidu Huang ,  Chie Ching Poon ,  Xinjiang Shen ,  Barry Cushing Stipe

IPC分类号： G11B11/00

CPC分类号： G11B5/3106 ,  G11B5/3136 ,  G11B5/314 ,  G11B5/40 ,  G11B5/6088 ,  G11B2005/0021

摘要： A method and apparatus for providing a signal for driving a heating element in a TAR or HAMR enabled disk storage system that includes an optical transducer (or near-field optical source) for further focusing the beamspot of a laser onto a magnetic media, thereby heating the media. The storage system includes a temperature sensor proximate to the near-field transducer which provides a feedback loop to the laser driver to adjust the power of the laser.

摘要翻译： 一种用于在包括用于将激光束点进一步聚焦到磁性介质上的光学换能器（或近场光源）的TAR或HAMR允许盘存储系统中提供用于驱动加热元件的信号的方法和装置，从而加热 媒体。 存储系统包括靠近近场换能器的温度传感器，其向激光驱动器提供反馈回路以调整激光器的功率。