公开(公告)号：US20100232050A1

公开(公告)日：2010-09-16

申请号：US12381327

申请日：2009-03-11

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： G11B5/02

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：US07787636B1

公开(公告)日：2010-08-31

申请号：US11348057

申请日：2006-02-06

申请人： Liu Yanning ,  Ben Chang ,  Babu Rahman ,  Timothy Glassburn ,  Erhard Schreck

发明人： Liu Yanning ,  Ben Chang ,  Babu Rahman ,  Timothy Glassburn ,  Erhard Schreck

IPC分类号： A61F11/06 ,  H03B29/00 ,  H04R3/00 ,  H04B15/00

CPC分类号： H04B15/02

摘要： A sound recording device includes a disk drive, a microphone, and a controller. The disk drive writes data on a rotatable data storage disk therein. The microphone generates a microphone signal which includes a desired sound component and a noise component from noise that is generated by the disk drive. The controller filters the microphone signal to reduce the noise component from the disk drive relative to the desired sound component, and writes the filtered microphone signal on the disk. Accordingly, noise from the disk drive can be attenuated during recording by the sound recording device.

摘要翻译： 录音装置包括磁盘驱动器，麦克风和控制器。 磁盘驱动器将数据写入其中的可旋转数据存储盘。 麦克风产生麦克风信号，其包括由磁盘驱动器产生的噪声所需的声音分量和噪声分量。 控制器对麦克风信号进行滤波，以减少磁盘驱动器相对于所需声音分量的噪声分量，并将过滤后的麦克风信号写入磁盘。 因此，在通过录音装置的记录期间，能够使来自磁盘驱动器的噪声衰减。

公开(公告)号：US20100128377A1

公开(公告)日：2010-05-27

申请号：US12313796

申请日：2008-11-25

申请人： Yuchen Zhou ,  Kowang Liu ,  Kunliang Zhang ,  Erhard Schreck

发明人： Yuchen Zhou ,  Kowang Liu ,  Kunliang Zhang ,  Erhard Schreck

IPC分类号： G11B5/02 ,  G11B5/82

CPC分类号： G11B5/1278 ,  G11B2005/001

摘要： We describe a system for electric field assisted magnetic recording where a recordable magnetic medium includes a magnetic recording layer of high coercivity and vertical magnetic anisotropy that is adjacent to an electrostrictive layer which can be placed in a state of stress by a electric field or which is already pre-stressed and which pre-stress can be turned into strain by an electric field. When the magnetic medium is acted on simultaneously by a magnetic writing field and an electric field, the stress in the elctrostrictive layer is transferred to a magnetostrictive layer which is the magnetic recording layer by itself or is coupled to the magnetic recording layer, whereupon the magnetic recording layer is made more isotropic and more easily written upon. Residual stresses in the electrostrictive layer can then be removed by an additional electric field of opposite sign to the stress-producing field.

摘要翻译： 我们描述了一种用于电场辅助磁记录的系统，其中可记录磁介质包括与矫顽力层相邻的具有高矫顽力和垂直磁各向异性的磁记录层，该电致伸缩层可通过电场置于应力状态， 已经预应力，哪些预应力可以通过电场变成应变。 当磁介质通过磁场和电场同时作用时，电致伸缩层中的应力自身转移到作为磁记录层的磁致伸缩层，或耦合到磁记录层，由此磁性 记录层变得更加各向同性，更容易写入。 电致伸缩层中的残余应力然后可以通过与应力产生场相反的附加电场来去除。

公开(公告)号：US20100091412A1

公开(公告)日：2010-04-15

申请号：US12585852

申请日：2009-09-25

申请人： Hiromi Yuasa ,  Hideaki Fukuzawa ,  Yoshihiko Fuji ,  Shuichi Murakami ,  Michiko Hara ,  Kunliang Zhang ,  Min Li ,  Erhard Schreck

发明人： Hiromi Yuasa ,  Hideaki Fukuzawa ,  Yoshihiko Fuji ,  Shuichi Murakami ,  Michiko Hara ,  Kunliang Zhang ,  Min Li ,  Erhard Schreck

IPC分类号： G11B5/33 ,  B05D5/12 ,  C23C16/513 ,  H05H1/24

CPC分类号： G11B5/3906 ,  B82Y10/00 ,  B82Y25/00 ,  C23C8/36 ,  C23C14/081 ,  C23C14/5833 ,  C23C14/5873 ,  G11B5/3163 ,  G11B2005/3996

摘要： A method for manufacturing a magneto-resistance effect element is provided. The magneto-resistance effect element includes a first magnetic layer including a ferromagnetic material, a second magnetic layer including a ferromagnetic material and a spacer layer provided between the first magnetic layer and the second magnetic layer, the spacer layer having an insulating layer and a conductive portion penetrating through the insulating layer. The method includes: forming a film to be a base material of the spacer layer; performing a first treatment using a gas including at least one of oxygen molecules, oxygen atoms, oxygen ions, oxygen plasma and oxygen radicals on the film; and performing a second treatment using a gas including at least one of helium ions, helium plasma, helium radicals, neon ions, neon plasma and neon radicals on the film submitted to the first treatment.

摘要翻译： 提供一种制造磁阻效应元件的方法。 磁阻效应元件包括包括铁磁材料的第一磁性层，包括铁磁材料的第二磁性层和设置在第一磁性层和第二磁性层之间的间隔层，间隔层具有绝缘层和导电 部分穿透绝缘层。 该方法包括：将膜形成为间隔层的基材; 使用包含氧分子，氧原子，氧离子，氧等离子体和氧自由基中的至少一种的气体进行第一处理; 以及使用包含氦离子，氦等离子体，氦原子，氖离子，氖等离子体和氖自由基中的至少一种的气体进行第一处理的第二处理。

公开(公告)号：US07602577B1

公开(公告)日：2009-10-13

申请号：US11345122

申请日：2006-01-31

申请人： Rickmer Kose ,  Erhard Schreck ,  Frank Obregon

发明人： Rickmer Kose ,  Erhard Schreck ,  Frank Obregon

IPC分类号： G11B27/36 ,  G11B5/596

CPC分类号： G11B19/042 ,  G11B5/4826 ,  G11B5/4873 ,  G11B5/5552 ,  G11B19/045

摘要： A microactuator incorporated within an actuator assembly of a disk drive is used as a detection element for rapid off track events that may occur. Preferably, the microactuator employs one or more piezoelectric elements used for purposes of secondary actuation. Uncontrolled movement of the actuator across the disk results in the piezoelectric elements generating a voltage spike or signal that is analyzed to determine whether a rapid off track event has occurred. Rapid off track events are distinguished from other possible events, such as shock events. If a rapid off track event is detected, then remedial actions are taken to restore data integrity, to include executing restore commands such as rewriting selected data tracks. Dedicated piezoelectric elements may also be provided for detecting rapid off track events wherein these elements are not incorporated in the servo loop that controls positioning of the actuator.

摘要翻译： 将并入磁盘驱动器的致动器组件内的微型致动器用作可能发生的快速偏离轨迹事件的检测元件。 优选地，微致动器采用用于二次致动的一个或多个压电元件。 致动器跨越盘的不受控制的运动导致压电元件产生电压尖峰或信号，该电压尖峰或信号被分析以确定是否发生了快速关闭轨道事件。 快速离线事件与其他可能的事件（例如休克事件）区分开来。 如果检测到快速关闭轨道事件，则采取补救措施来恢复数据完整性，以包括执行恢复命令，例如重写所选数据轨道。 还可以提供专用压电元件用于检测快速偏离轨道事件，其中这些元件未被并入控制致动器定位的伺服回路中。

公开(公告)号：US07502205B1

公开(公告)日：2009-03-10

申请号：US10859919

申请日：2004-06-03

申请人： Tony Hurtado ,  Wentao Yan ,  Lin Guo ,  Chris Hawks ,  Don Brunnett ,  Thao Nguyen ,  Richard Oswald ,  Erhard Schreck

发明人： Tony Hurtado ,  Wentao Yan ,  Lin Guo ,  Chris Hawks ,  Don Brunnett ,  Thao Nguyen ,  Richard Oswald ,  Erhard Schreck

IPC分类号： G11B21/02 ,  G11B5/55

CPC分类号： G11B5/6005 ,  G11B5/02 ,  G11B5/6064 ,  G11B5/607 ,  G11B2005/0005

摘要： A control source and drivers for a thermal actuator fly height controlled heads in a disk drive system includes provisions for driving a heater element to dissipate various levels of power, and thus actuate the head by a desired amount, depending on whether the head is in a write mode or a read mode. Further, overshoot and undershoot are achieved as desired by providing initial values and equilibrium values and through the use of a control capacitor to provide a time constant to the drive signal to the heater element.

摘要翻译： 磁盘驱动系统中用于热致动器飞高度控制头的控制源和驱动器包括用于驱动加热器元件以消散各种电平的装置的装置，并且因此根据头部是否在头部 写入模式或读取模式。 此外，通过提供初始值和平衡值以及通过使用控制电容器来向加热器元件提供驱动信号的时间常数来实现根据需要实现过冲和下冲。

公开(公告)号：US07369345B1

公开(公告)日：2008-05-06

申请号：US11292831

申请日：2005-12-02

申请人： Yunfeng Li ,  Erhard Schreck ,  Wei Guo ,  Tim Glassburn ,  Mark Heimbaugh ,  William Flynn ,  Oliver Northrup ,  John E. Scura ,  Lin Guo ,  Xiaokun Chew

发明人： Yunfeng Li ,  Erhard Schreck ,  Wei Guo ,  Tim Glassburn ,  Mark Heimbaugh ,  William Flynn ,  Oliver Northrup ,  John E. Scura ,  Lin Guo ,  Xiaokun Chew

IPC分类号： G11B5/54 ,  G11B21/12

CPC分类号： G11B5/5582

摘要： A system provided for protecting a disk drive from impact damages. More specifically, a disk drive is provided that includes an accelerometer interconnected to a printed circuit board that detects free fall of the disk drive. In addition, the velocity of spinning disks of the disk drive is also monitored to assess changes in velocity thereof that may indicate the presence of a tumbling condition. Furthermore, the change in acceleration measured by the accelerometer is monitored to prevent false indications of free fall due to common vibrations. Thus an enhanced system is provided that protects disk drives from the effect of free falls under a wide variety of conditions and allowing for drops from shorter distances to be identified.

摘要翻译： 一种用于保护磁盘驱动器免受冲击损坏的系统。 更具体地，提供了一种盘驱动器，其包括与检测盘驱动器的自由落下的印刷电路板互连的加速度计。 此外，还监视磁盘驱动器的旋转磁盘的速度以评估其速度的变化，其可以指示存在翻滚状况。 此外，监测由加速度计测量的加速度变化，以防止由于共同振动引起的自由落体的错误指示。 因此，提供了一种增强的系统，其保护磁盘驱动器免受各种条件下的自由落体的影响，并允许识别较短距离的液滴。

公开(公告)号：US07362534B1

公开(公告)日：2008-04-22

申请号：US11101112

申请日：2005-04-07

申请人： Erhard Schreck ,  Francis P. Crimi ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Bahn ,  Mark Heimbaugh ,  Kazuhiro Saito ,  Andrew LeFebvre ,  Joerg Ferber ,  Xiaoping Hu ,  Douglas J. Krajnovich ,  Chris Hawks ,  Donald J Brunnett ,  Bruce C Schardt

发明人： Erhard Schreck ,  Francis P. Crimi ,  Jingbo Yu ,  Michael Mallary ,  Scott Hughes ,  Duc Bahn ,  Mark Heimbaugh ,  Kazuhiro Saito ,  Andrew LeFebvre ,  Joerg Ferber ,  Xiaoping Hu ,  Douglas J. Krajnovich ,  Chris Hawks ,  Donald J Brunnett ,  Bruce C Schardt

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

CPC分类号： G11B5/5526 ,  G11B5/3136 ,  G11B5/54

摘要： A disk drive includes a rotatable storage disk, an actuator motor, a slider that magnetically interacts with the storage disk, and a drive circuitry. A portion of the slider moves between a first position wherein the slider does not contact the storage disk and a second position wherein the slider contacts the storage disk. The drive circuitry can detect when the position of the slider changes between these positions. In one embodiment, the drive circuitry monitors off-track movement of the slider to detect when the slider has moved between these positions. The drive circuitry can also current that is directed to the actuator motor that is used to compensate for off-track movement to detect when the slider moves between these positions. In yet another embodiment, the drive circuitry monitors a rotational velocity of the storage disk to detect approximately when the slider moves between these positions.

摘要翻译： 磁盘驱动器包括可旋转存储盘，致动器马达，与存储盘磁性相互作用的滑块和驱动电路。 滑块的一部分在滑块不接触存储盘的第一位置和滑块接触存储盘的第二位置之间移动。 驱动电路可以检测滑块的位置何时在这些位置之间变化。 在一个实施例中，驱动电路监视滑块的偏离轨迹运动，以检测滑块何时在这些位置之间移动。 驱动电路还可以引导到致动器马达的电流，该电流用于补偿离轨运动以检测滑块何时在这些位置之间移动。 在另一个实施例中，驱动电路监视存储盘的旋转速度，以便在滑块在这些位置之间移动时大致检测。

公开(公告)号：US20070230021A1

公开(公告)日：2007-10-04

申请号：US11729179

申请日：2007-03-28

申请人： Erhard Schreck ,  James McFadyen

发明人： Erhard Schreck ,  James McFadyen

IPC分类号： G11B21/02

CPC分类号： G11B5/6005 ,  G11B5/6064

摘要： Various embodiments of the present invention are directed to substantially eliminating transient changes in a flying height of a head during read-to-write and write-to-read transitions. In various embodiments, flying height transient compensation is provided to substantially maintain a desired flying height during one or both of read-to-write and write-to-read transitions.

摘要翻译： 本发明的各种实施例旨在基本上消除在读写和写 - 读转换期间磁头的飞行高度的瞬时变化。 在各种实施例中，提供飞行高度瞬态补偿以在读/写和写 - 读转换期间的一个或两个中基本保持期望的飞行高度。

公开(公告)号：US07136889B1

公开(公告)日：2006-11-14

申请号：US09649659

申请日：2000-08-29

申请人： Erhard Schreck

发明人： Erhard Schreck

IPC分类号： G06F1/02

CPC分类号： G06F7/588

摘要： A method and apparatus for generating high quality real random numbers is provided. In particular, the present invention enables a hard disk drive of a computer to function as a generator of high quality real random numbers by monitoring one or more of a disk drive's parameters, wherein such parameters are subjected to environmental effects. The system of the present invention does not require the addition of any hardware not normally associated with a computer. According to one embodiment of the present invention, a parameter of the disk drive is monitored, and after processing and filtering the parameter is provided to an application as a random number. Monitored parameters may include the position error signal of a transducer head with respect to a track, temperature, channel gain, transducer head flying height, etc. According to one embodiment of the present invention, the various other parameters may be combined or used in concert to provide high quality real random numbers.

摘要翻译： 提供了一种用于产生高质量实数随机数的方法和装置。 特别地，本发明使得计算机的硬盘驱动器能够通过监视磁盘驱动器的参数中的一个或多个来发挥高质量的实数随机数的发生器，其中这些参数受到环境影响。 本发明的系统不需要添加通常不与计算机相关联的任何硬件。 根据本发明的一个实施例，监视磁盘驱动器的参数，并且在处理和过滤之后，将参数作为随机数提供给应用。 监测的参数可以包括相对于轨道，温度，通道增益，换能器头飞行高度等的换能器头的位置误差信号。根据本发明的一个实施例，可以将各种其它参数组合或一起使用 提供高质量的真实随机数。