公开(公告)号：US6101062A

公开(公告)日：2000-08-08

申请号：US986381

申请日：1997-12-08

申请人： David H. Jen ,  Mike Suk

发明人： David H. Jen ,  Mike Suk

IPC分类号： G11B5/55 ,  G11B21/02

CPC分类号： G11B21/025 ,  G11B5/5582

摘要： A method and apparatus for detecting harmful motion of a disk drive system to avoid a head crash. The motor spin current in the hard disk drive is used as a sensor to detect acceleration of the disk drive corresponding to a tipping or falling condition. In normal operation, the disk stack angular velocity (measured in revolutions per minute or RPM) is constantly monitored so that the disk drive control system can generate timing signals allowing the controller to accurately locate data addresses on the rotating disks. Disk stack RPM is accurately controlled at a constant value by a suitable feedback control loop which measures RPM and adjusts motor drive current to maintain the desired RPM. The rapidly rotating disk stack acts as a gyro system whose angular momentum resists any change in direction. In the event of a change in orientation of the disk drive such as that initiated by tipping or falling, gyroscopic forces are generated which act to increase friction of the bearings supporting the rotating disk stack resulting in a decrease in disk stack angular velocity. The change of disk stack RPM is detected by the normal feedback control loop electronics and an error signal can be generated to cause actuator park or unload action before impact of the falling disk drive occurs.

摘要翻译： 一种用于检测盘驱动系统的有害运动以避免头部碰撞的方法和装置。 硬盘驱动器中的电机自旋电流用作传感器，以检测对应于倾翻或下降状态的磁盘驱动器的加速度。 在正常操作中，不断监视磁盘堆叠角速度（以每分钟转/分钟为单位），以便磁盘驱动器控制系统可以生成定时信号，从而允许控制器准确地定位旋转磁盘上的数据地址。 通过合适的反馈控制回路将磁盘堆栈RPM精确控制在一个恒定的值，该循环测量RPM并调整电机驱动电流以维持所需的RPM。 快速旋转的磁盘堆栈充当陀螺仪系统，其角动量抵抗方向上的任何改变。 在诸如由倾翻或下降引起的磁盘驱动器的方向改变的情况下，产生陀螺力，其作用是增加支撑旋转盘堆叠的轴承的摩擦，导致磁盘堆叠角速度的降低。 磁盘堆栈RPM的变化由正常的反馈控制回路电路检测，并且可能会产生误差信号，从而在下降的磁盘驱动器发生冲击之前产生执行器驻留或卸载动作。

公开(公告)号：US5798884A

公开(公告)日：1998-08-25

申请号：US571666

申请日：1995-12-13

申请人： Donald Ray Gillis ,  David H. Jen ,  Mike Suk

发明人： Donald Ray Gillis ,  David H. Jen ,  Mike Suk

IPC分类号： G11B5/012 ,  G11B5/54 ,  G11B5/82 ,  G11B21/02 ,  G11B21/22

CPC分类号： G11B5/82 ,  G11B5/54

摘要： A data storage system has a disk having a first, second and third zone. The first zone has rough texturing to prevent stiction between a slider at rest and the disk. The second zone has intermediate texturing to prevent stiction when a moving slider is in contact with the disk. The third zone has a smooth texture and is used for data recording. A control unit moves the slider between the zones as appropriate on power up and power down of the system. The system has an actuator latch having a bias device. The bias device allows the slider to be positioned between the first and second zones by selective energizing of the actuator while in the latched position.

公开(公告)号：US07952830B2

公开(公告)日：2011-05-31

申请号：US12478716

申请日：2009-06-04

申请人： SungChang Lee ,  Yawshing Tang ,  Mike Suk

发明人： SungChang Lee ,  Yawshing Tang ,  Mike Suk

IPC分类号： G11B21/02

CPC分类号： G11B5/6029 ,  G11B5/40 ,  G11B5/455 ,  G11B5/6005 ,  G11B5/6064

摘要： This application discloses a hard disk drive and operates it based upon using a first and third harmonic amplitude generated from reading a repeated pattern of bits written to a track on a disk surface. Both amplitudes are used to create a first data set and the third harmonic amplitude is used as a single tone to create a second data set. A conversion factor between these two is determine, which may be used to convert the first data set under other conditions into a temperature insensitive table of the electrical stimulus of a vertical micro-actuator and the flying height change of the slider. The hard disk drive may be calibrated during manufacture and/or in the field.

摘要翻译： 本申请公开了一种硬盘驱动器，并且基于使用从读取写入盘表面上的轨道的重复比特模式产生的第一和第三谐波幅度来操作它。 两个幅度用于创建第一数据集，并且三次谐波幅度用作单音以创建第二数据集。 确定这两者之间的转换因子，其可以用于将其他条件下的第一数据集转换成垂直微致动器的电刺激的温度不敏感表和滑块的飞行高度变化。 硬盘驱动器可能在制造和/或现场进行校准。

公开(公告)号：US20090305081A1

公开(公告)日：2009-12-10

申请号：US12136640

申请日：2008-06-10

申请人： Qing Dai ,  Xing-Cai Guo ,  Dan Saylor Kercher ,  Mike Suk

发明人： Qing Dai ,  Xing-Cai Guo ,  Dan Saylor Kercher ,  Mike Suk

IPC分类号： G11B5/66 ,  G11B5/84

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/8408

摘要： A method for planarizing a magnetic recording disk that has surface features of elevated lands and recessed grooves includes forming two coatings of cured perfluorinated polyether (PFPE) polymers over the surface features. The disk may have a protective carbon overcoat with a surface that replicates the topography of lands and grooves. A liquid functionalized-PFPE is applied over the disk surface and then cured to form a first coating with the functionalized end groups bonding to the carbon overcoat. A liquid non-functionalized-PFPE polymer is then applied over the functionalized-PFPE coating and cured to form a second coating. The combined coatings substantially planarize the disk surface so that there is minimal recession between the top of the coating over the lands and the top of the coating over the grooves.

摘要翻译： 用于平面化磁记录盘的方法，其具有升高的平台和凹槽的表面特征，包括在表面特征上形成固化的全氟化聚醚（PFPE）聚合物的两个涂层。 盘可以具有保护性碳覆盖层，其具有复制土地和沟槽的形貌的表面。 将液体官能化的PFPE施加在盘表面上，然后固化以形成具有与碳外涂层结合的官能化端基的第一涂层。 然后将液体非官能化-PFPE聚合物施加到官能化-PFPE涂层上并固化以形成第二涂层。 组合的涂层基本上使盘表面平坦化，使得在涂层的顶部与焊盘顶部之间存在最小的凹陷。

公开(公告)号：US07417209B2

公开(公告)日：2008-08-26

申请号：US11361561

申请日：2006-02-24

申请人： John Contreras ,  Takashi Ikeda ,  Yumi Nagano ,  Nobumasa Nishiyama ,  Toyomi Ohsawa ,  Mike Suk

发明人： John Contreras ,  Takashi Ikeda ,  Yumi Nagano ,  Nobumasa Nishiyama ,  Toyomi Ohsawa ,  Mike Suk

IPC分类号： H05B1/02

CPC分类号： G11B5/4853 ,  G11B5/6005 ,  G11B5/6064

摘要： A system and method for preventing crosstalk noise from being superimposed on a read signal due to noise from a heater line for a slider in a recording disk drive is disclosed. A heater line pair to the slider is not grounded but is in a floating state with respect to an actuator support structure. A heater driver allows a heater current to flow between a positive power supply voltage and a negative power supply voltage. The heater line pair is not grounded, so an impedance is high as viewed from a magnetic disk. Thus, it is possible to effectively suppress a noise transmitted from the magnetic disk and read signal quality is kept from deteriorating due to the crosstalk from the heater line.

摘要翻译： 公开了一种用于防止由于记录盘驱动器中的滑块的加热器线的噪声而引起的串扰噪声叠加在读信号上的系统和方法。 与滑块相对的加热器线对不接地，而是相对于致动器支撑结构处于浮动状态。 加热器驱动器允许加热器电流在正电源电压和负电源电压之间流动。 加热线对不接地，因此从磁盘观察时阻抗较高。 因此，可以有效地抑制从磁盘传递的噪声，并且由于来自加热器线的串扰，读取信号质量不会劣化。

公开(公告)号：US07336434B2

公开(公告)日：2008-02-26

申请号：US11184366

申请日：2005-07-18

申请人： Jeffrey S. Lille ,  Mike Suk

发明人： Jeffrey S. Lille ,  Mike Suk

IPC分类号： G11B5/00 ,  G11B27/36 ,  G11B21/02

CPC分类号： G11B5/40 ,  G11B20/18 ,  G11B2220/2516

摘要： A method for predicting the failure of a data storage device having a slider heater is disclosed. For slider heaters exhibiting a decreasing resistance aging characteristic, a failure warning is produced when heater resistance suddenly increases 2 to 5%, or dR/dt changes sign from negative to positive. For slider heaters exhibiting an increasing resistance aging characteristic, a failure warning is produced when the heater resistance suddenly drops 2 to 5%, or dR/dt changes sign from positive to negative. Additionally, random changes in heater resistance exceeding nominal measurement error may also be utilized to produce a failure warning. This method provides advance warning of potential data read/write errors well before the open circuit failure of the slider heater occurs.

摘要翻译： 公开了一种用于预测具有滑块加热器的数据存储装置的故障的方法。 对于具有降低的电阻老化特性的滑块加热器，当加热器电阻突然增加2至5％或dR / dt从负变为正时，产生故障警告。 对于表现出增加的电阻老化特性的滑块加热器，当加热器电阻突然下降2〜5％，或dR / dt从正到负变化时产生故障警告。 此外，也可以利用加热器电阻超过标称测量误差的随机变化来产生故障警告。 该方法在滑块加热器的开路故障发生之前就提供潜在数据读/写错误的提前警告。

公开(公告)号：US07190543B2

公开(公告)日：2007-03-13

申请号：US11048009

申请日：2005-01-31

申请人： Mike Suk

发明人： Mike Suk

IPC分类号： G11B15/18

CPC分类号： G11B5/60 ,  G11B5/6064

摘要： A method and apparatus for optimizing flying height control using heated sliders is disclosed. A first heater is provided in a slider for implementing a first operating characteristic and a second heater is provided in the slider for implementing a second operating characteristic. A power source is provided for activating the first and second heaters. An activation controller is provided for allowing the first and second heaters to be selectively activated by the power source.

摘要翻译： 公开了一种使用加热滑块来优化飞行高度控制的方法和装置。 在用于实现第一操作特性的滑块中设置第一加热器，并且在滑块中设置第二加热器以实现第二操作特性。 提供了用于激活第一和第二加热器的电源。 提供激活控制器，用于允许第一和第二加热器被电源选择性地启动。

公开(公告)号：US20070030593A1

公开(公告)日：2007-02-08

申请号：US11494683

申请日：2006-07-26

申请人： Ono Hiroyuki ,  Mike Suk ,  Hideaki Tanaka ,  Masayuki Kurita

发明人： Ono Hiroyuki ,  Mike Suk ,  Hideaki Tanaka ,  Masayuki Kurita

IPC分类号： G11B5/00

CPC分类号： G11B5/6064 ,  G11B5/6005 ,  G11B2005/0021

摘要： Embodiment of the invention improve the productivity of a magnetic disk drive that controls the flying height of a magnetic head by use of a heater. According to an embodiment, in a method for manufacturing a magnetic disk drive that writes/reads information to/from a magnetic disk medium by use of a magnetic head including a heater adapted to control the flying height, the read and write performance of the magnetic head is tested; a heating condition used at the time of heating by the heater is determined on the basis of the test results; and a control parameter that specifies the amount of heating by the heater in the determined heating condition is determined.

摘要翻译： 本发明的实施例提高了通过使用加热器来控制磁头的飞行高度的磁盘驱动器的生产率。 根据一个实施例，在一种用于制造磁盘驱动器的方法中，该磁盘驱动器通过使用包括适于控制飞行高度的加热器的磁头来向/从磁盘介质读取/读取信息的磁盘驱动器，磁性读取和写入性能 头被测试 基于测试结果确定加热器加热时使用的加热条件; 并且确定在确定的加热条件中指定加热器的加热量的控制参数。

公开(公告)号：US20070014041A1

公开(公告)日：2007-01-18

申请号：US11184366

申请日：2005-07-18

申请人： Jeffrey Lille ,  Mike Suk

发明人： Jeffrey Lille ,  Mike Suk

IPC分类号： G11B5/00

CPC分类号： G11B5/40 ,  G11B20/18 ,  G11B2220/2516

摘要： A method for predicting the failure of a data storage device having a slider heater is disclosed. For slider heaters exhibiting a decreasing resistance aging characteristic, a failure warning is produced when heater resistance suddenly increases 2 to 5%, or dR/dt changes sign from negative to positive. For slider heaters exhibiting an increasing resistance aging characteristic, a failure warning is produced when the heater resistance suddenly drops 2 to 5%, or dR/dt changes sign from positive to negative. Additionally, random changes in heater resistance exceeding nominal measurement error may also be utilized to produce a failure warning. This method provides advance warning of potential data read/write errors well before the open circuit failure of the slider heater occurs.

摘要翻译： 公开了一种用于预测具有滑块加热器的数据存储装置的故障的方法。 对于具有降低的电阻老化特性的滑块加热器，当加热器电阻突然增加2至5％或dR / dt从负变为正时，产生故障警告。 对于表现出增加的电阻老化特性的滑块加热器，当加热器电阻突然下降2〜5％，或dR / dt从正到负变化时产生故障警告。 此外，也可以利用加热器电阻超过标称测量误差的随机变化来产生故障警告。 该方法在滑块加热器的开路故障发生之前就提供潜在数据读/写错误的提前警告。

公开(公告)号：US20060023367A1

公开(公告)日：2006-02-02

申请号：US10909058

申请日：2004-07-30

申请人： Mike Suk

发明人： Mike Suk

IPC分类号： G11B5/127 ,  G11B5/10 ,  G11B5/33 ,  G11B5/41

CPC分类号： G11B5/40 ,  G11B5/11 ,  G11B5/314 ,  G11B5/41 ,  G11B5/6064

摘要： Embodiments of the present invention provide a grounded conductive layer between the heater and the lower magnetoresistive (MR) shield in the read/write head structure. The grounded conductive layer eliminates or at least substantially prevents the accumulation of charges on the lower MR shield as a result of the voltage supplied to the heater. In one embodiment, a magnetic head comprises a plurality of read/write components; a heater disposed near the plurality of read/write components; and a grounded conductive layer disposed between the heater and the plurality of read/write components.

摘要翻译： 本发明的实施例在读/写头结构中提供加热器和下磁阻（MR）屏蔽之间的接地导电层。 由于提供给加热器的电压，接地的导电层消除或至少基本上防止了在下MR屏蔽上积累电荷。 在一个实施例中，磁头包括多个读/写组件; 设置在所述多个读/写组件附近的加热器; 以及设置在加热器和多个读/写组件之间的接地导电层。