公开(公告)号：US07310194B1

公开(公告)日：2007-12-18

申请号：US11101089

申请日：2005-04-07

申请人： Bruce C. Schardt ,  Erhard Schreck ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Banh ,  Kazuhiro Saito ,  Donald J Brunnett ,  Tim Glassburn ,  Chris Hawks ,  Thao Anh Nguyen ,  Andrew LeFebvre ,  Joerg Ferber ,  Richard K. Oswald ,  Brian Strom

发明人： Bruce C. Schardt ,  Erhard Schreck ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Banh ,  Kazuhiro Saito ,  Donald J Brunnett ,  Tim Glassburn ,  Chris Hawks ,  Thao Anh Nguyen ,  Andrew LeFebvre ,  Joerg Ferber ,  Richard K. Oswald ,  Brian Strom

IPC分类号： G11B21/02

CPC分类号： G11B5/6029 ,  G11B5/3133 ,  G11B5/455 ,  G11B5/5534 ,  G11B5/607

摘要： A disk drive includes a drive housing, a storage disk, a slider and a drive circuitry. The slider magnetically interacts with the storage disk, and includes a read/write head that is positioned to have an actual head-to-disk spacing greater than zero nanometers during rotation of the storage disk. The drive circuitry can determine and/or monitor the actual head-to-disk spacing at any time during the operation of the disk drive based on an amplitude or a change in the amplitude of a signal such as a variable gain amplifier signal. In one embodiment, the slider includes a slider mover that receives current via the drive circuitry and causes a deformation of a portion of the slider to change the head-to-disk spacing based on the amplitude of the signal. In another embodiment, the read/write head moves during substantially consistent rotational velocity of the storage disk from a first actual head-to-disk spacing equal to approximately zero nanometers, to a second actual head-to-disk spacing that is greater than zero nanometers based on a desired amplitude of the signal.

摘要翻译： 磁盘驱动器包括驱动器壳体，存储盘，滑块和驱动电路。 该滑块与存储盘磁性地相互作用，并且包括读/写头，其被定位成在存储盘旋转期间具有大于零纳米的实际头到盘间距。 驱动电路可以基于诸如可变增益放大器信号的信号的振幅或振幅的变化来确定和/或监视磁盘驱动器的操作期间的任何时间的实际磁头到磁盘间距。 在一个实施例中，滑块包括滑块移动器，其通过驱动电路接收电流，并且导致滑块的一部分的变形，以基于信号的幅度来改变头对盘间隔。 在另一个实施例中，读/写头在存储盘的基本一致的旋转速度从等于大约零纳米的第一实际磁头到磁盘间隔移动到大于零的第二实际磁头到磁盘间隔 基于信号的期望幅度的纳米。

公开(公告)号：US20070253110A1

公开(公告)日：2007-11-01

申请号：US11799653

申请日：2007-05-02

申请人： Erhard Schreck ,  Yanning Liu

发明人： Erhard Schreck ,  Yanning Liu

IPC分类号： G11B5/82 ,  G11B5/84

CPC分类号： G11B5/7315 ,  G11B5/7325 ,  G11B5/82 ,  G11B5/8404

摘要： A storage disk for a hard disk drive includes a homogeneously-formed body region, a first side region and a second side region. The body region includes a first body side and a second body side opposite the first body side. The first side region is secured to the first body side and the second side region is secured to the second body side. In one embodiment, the first side region is adapted to store data and the second side region is not adapted to store data. The first side region includes a plurality of layers formed from different materials relative to one another. The first side region has a first density that is different than a second density of the second side region. In one embodiment, the first side region has a mass that is different than a mass of the second side region. In an alternative embodiment, the first side region has a thickness that is different than a thickness of the second side region.

摘要翻译： 用于硬盘驱动器的存储盘包括均匀形成的体区，第一侧区和第二侧区。 身体区域包括与第一身体侧相对的第一主体侧和第二主体侧。 第一侧区域被固定到第一主体侧，并且第二侧部区域被固定到第二主体侧。 在一个实施例中，第一侧区适于存储数据，而第二侧区不适于存储数据。 第一侧区域包括由不同材料相对于彼此形成的多个层。 第一侧区域具有与第二侧区域的第二密度不同的第一密度。 在一个实施例中，第一侧区具有与第二侧区的质量不同的质量。 在替代实施例中，第一侧区具有不同于第二侧区的厚度的厚度。

公开(公告)号：US07245452B1

公开(公告)日：2007-07-17

申请号：US11256299

申请日：2005-10-21

申请人： Timothy A. Riener ,  Erhard Schreck

发明人： Timothy A. Riener ,  Erhard Schreck

IPC分类号： G11B21/02 ,  G11B5/58 ,  G11B5/596

CPC分类号： G11B5/59627

摘要： A controller for a disk drive measures track misregistration, extracts non-repeatable runout from measured track misregistration, determines one or more components of non-repeatable runout at various radial locations of a disk, and compares the determined components to known values at different altitudes to determine an operating altitude of a disk drive.

摘要翻译： 用于磁盘驱动器的控制器测量磁道重合失调，从测量磁道重合失准中提取不可重复的跳动，确定磁盘各个径向位置处的不可重复跳动的一个或多个组件，并将确定的组件与不同高度处的已知值进行比较 确定磁盘驱动器的工作高度。

公开(公告)号：US07095201B1

公开(公告)日：2006-08-22

申请号：US09973791

申请日：2001-10-09

申请人： Erhard Schreck ,  Mark Heimbaugh

发明人： Erhard Schreck ,  Mark Heimbaugh

IPC分类号： G05B11/01

CPC分类号： G11B5/5521 ,  G11B19/02

摘要： A method and apparatus for providing a user selectable start-up current in a disk drive are provided. A user may select a relatively high start-up current to provide a relatively fast start-up time in a disk drive. Alternatively, the user may select a relatively low maximum current draw by the hard drive to enable a relatively low power, low cost power supply to be used in connection with the hard drive, for use with applications in which a relatively long start-up time is acceptable. In connection with applications in which a low cost power supply is to be used, the maximum current drawn by the disk drive may be limited to the amount of current required by the disk drive during seek operations.

摘要翻译： 提供了一种用于在盘驱动器中提供用户可选择的启动电流的方法和装置。 用户可以选择相对较高的启动电流以在磁盘驱动器中提供相对快速的启动时间。 或者，用户可以通过硬盘驱动器选择相对较低的最大电流消耗，以使得能够与硬盘驱动器结合使用相对低功率，低成本的电源，以便与其中相对长的启动时间 是可以接受的 关于要使用低成本电源的应用，磁盘驱动器吸取的最大电流可能被限制在磁盘驱动器在寻找操作期间所需的电流量。

公开(公告)号：US08797671B2

公开(公告)日：2014-08-05

申请号：US13474593

申请日：2012-05-17

申请人： Oscar J. Ruiz ,  Erhard Schreck

发明人： Oscar J. Ruiz ,  Erhard Schreck

IPC分类号： G11B21/02 ,  G11B27/36 ,  G11B5/127

CPC分类号： G11B5/607 ,  G11B5/6076 ,  G11B5/6088

摘要： In one general embodiment, a magnetic head includes a slider having a media-facing surface; and a device coupled to the slider and being selectively extendible for selectively contacting a magnetic medium at a frequency of between about 200 and about 600 kHz. Other magnetic heads and methods of use are described according to additional embodiments.

摘要翻译： 在一个一般实施例中，磁头包括具有介质面向表面的滑块; 以及耦合到所述滑块并且选择性地可延伸的装置，用于选择性地以大约200和大约600kHz之间的频率接触磁介质。 根据另外的实施例描述其它磁头和使用方法。

公开(公告)号：US08593915B2

公开(公告)日：2013-11-26

申请号：US13136462

申请日：2011-08-01

申请人： Erhard Schreck ,  Kowang Liu ,  Kouji Shimazawa ,  Po-Kang Wang

发明人： Erhard Schreck ,  Kowang Liu ,  Kouji Shimazawa ,  Po-Kang Wang

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A slider mounted TAMR (Thermal Assisted Magnetic Recording), DFH (Dynamic Flying Height) type read/write head using optical-laser generated surface plasmons in a small antenna to locally heat a magnetic medium, uses the same optical laser at low power to pre-heat the antenna. Maintaining the antenna at this pre-heated temperature, approximately 50% of its highest temperature during write operations, allows the DFH mechanism sufficient time to compensate for the thermal protrusion of the antenna at that lower temperature, so that thermal protrusion transients are significantly reduced when a writing operation occurs and full laser power is applied. The time constant for antenna protrusion is less than the time constant for DFH fly height compensation, so, without pre-heating, the thermal protrusion of the antenna due to absorption of optical radiation cannot be compensated by the DFH effect.

摘要翻译： 使用在小天线中使用光学激光产生的表面等离子体激光器来局部加热磁介质的TAMR（热辅助磁记录），DFH（动态飞行高度）型读/写头的滑块，以低功率使用相同的光学激光器 - 加热天线。 将天线维持在该预热温度下，在写入操作期间其最高温度的约50％允许DFH机构有足够的时间来补偿在该较低温度下的天线的热突起，使得热突起瞬变显着降低 发生写入操作并施加全激光功率。 天线突起的时间常数小于DFH飞行高度补偿的时间常数，因此，在没有预热的情况下，由于吸收光辐射而导致的天线热突起不能被DFH效应补偿。

公开(公告)号：US20130308223A1

公开(公告)日：2013-11-21

申请号：US13474593

申请日：2012-05-17

申请人： Oscar J. Ruiz ,  Erhard Schreck

发明人： Oscar J. Ruiz ,  Erhard Schreck

IPC分类号： G11B21/12

CPC分类号： G11B5/607 ,  G11B5/6076 ,  G11B5/6088

摘要： In one general embodiment, a magnetic head includes a slider having a media-facing surface; and a device coupled to the slider and being selectively extendible for selectively contacting a magnetic medium at a frequency of between about 200 and about 600 kHz. Other magnetic heads and methods of use are described according to additional embodiments.

摘要翻译： 在一个一般实施例中，磁头包括具有介质面向表面的滑块; 以及耦合到所述滑块并且选择性地可延伸的装置，用于选择性地以大约200和大约600kHz之间的频率接触磁介质。 根据另外的实施例描述其它磁头和使用方法。

公开(公告)号：US20130170331A1

公开(公告)日：2013-07-04

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： G11B11/105 ,  G11B11/24 ,  G11B17/32

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：US08295132B2

公开(公告)日：2012-10-23

申请号：US13200478

申请日：2011-09-23

申请人： Xuhui Jin ,  Yuchen Zhou ,  Joe Smyth ,  Tobias Maletzky ,  Kenichi Takano ,  Erhard Schreck

发明人： Xuhui Jin ,  Yuchen Zhou ,  Joe Smyth ,  Tobias Maletzky ,  Kenichi Takano ,  Erhard Schreck

IPC分类号： G11B11/00

CPC分类号： G11B5/3146 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163

摘要： A TAMR head is disclosed with a triangular shaped plasmon antenna covered on two sides with a plasmon layer that generates an edge plasmon mode along a vertex of the two plasmon sides formed opposite a main pole layer. A plasmon shield (PS) is formed along the ABS and opposite the vertex to confine an electric field from the edge plasmon mode within a small radius of the edge plasmon tip thereby reducing the optical spot size on the magnetic medium and enhancing writability. An end of a waveguide used to direct input electromagnetic radiation to the plasmon antenna adjoins a PS side opposite the ABS. In one embodiment, a magnetic shield may be formed along the ABS and adjoins the PS so that a first PS section terminates at the ABS and faces the vertex while a second PS section is formed between the magnetic shield and waveguide end.

摘要翻译： 公开了具有三面形等离子体激元的三角形等离子体激元天线，该三角形等离子体激元天线用等离子体膜覆盖，该等离子体膜沿着与主极层相对的两个等离子体激元侧的顶点产生边缘等离子体模式。 等离子体屏蔽（PS）沿着ABS形成并与顶点相对，以将边缘等离子体激元模式的电场限制在边缘等离子体激元尖端的小半径内，从而减小磁介质上的光点尺寸并提高可写性。 用于将输入电磁辐射引导到等离子体激元天线的波导的一端与ABS相对的PS侧相邻。 在一个实施例中，可以沿着ABS形成磁屏蔽并与PS邻接，使得第一PS部分在ABS处终止并面向顶点，而在磁屏蔽和波导端之间形成第二PS部分。

公开(公告)号：US08248898B2

公开(公告)日：2012-08-21

申请号：US12925283

申请日：2010-10-18

申请人： Erhard Schreck ,  Xuhui Jin ,  Tobias Maletzky ,  Joe Smyth ,  Dayu Zhou ,  Yuchen Zhou ,  Kenichi Takano

发明人： Erhard Schreck ,  Xuhui Jin ,  Tobias Maletzky ,  Joe Smyth ,  Dayu Zhou ,  Yuchen Zhou ,  Kenichi Takano

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/105 ,  G11B5/6088 ,  G11B2005/001 ,  G11B2005/0021

摘要： A waveguide structure for aligning a light source to a center waveguide (CWG) in a TAMR head is disclosed and includes two alignment waveguides (AWVG) symmetrically formed about a plane that bisects the CWG lengthwise dimension. Each AWVG has a light coupling section formed parallel to a side of the CWG and captures 0.5% to 10% of the light in the CWG. Each AWVG has an outlet that directs light to a photo detector or camera so that light intensity measurements lAWVG1 and lAWVG2 for first and second AWVG, respectively, can be taken at various positions of the light source. Optimum alignment occurs when (lAWVG1+lAWVG2) reaches a maximum value and |lAWVG1−lAWVG2| has a minimum value. AWVG outlets may be at the ABS, or at the side or back end of a slider. Measurement sensitivity is increased by decreasing the width of the AWVG.

摘要翻译： 公开了一种用于将光源对准TAMR头中的中心波导（CWG）的波导结构，并且包括关于平分CWG纵向尺寸的平面对称地形成的两个对准波导（AWVG）。 每个AWVG具有平行于CWG侧面并且捕获CWG中的0.5％至10％的光的光耦合部分。 每个AWVG都有一个出口，可以将光引导到光电检测器或照相机，以便分别在光源的各个位置拍摄第一个和第二个AWVG的光强度测量值lAWVG1和lAWVG2。 （lAWVG1 + 1AWVG2）达到最大值时，发生最佳对齐，并且| lAWVG1-1AWVG2 | 具有最小值。 AWVG插座可能位于ABS或滑块的侧面或后端。 通过减小AWVG的宽度来提高测量灵敏度。