公开(公告)号：US20100309578A1

公开(公告)日：2010-12-09

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：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：US08331049B2

公开(公告)日：2012-12-11

申请号：US12796346

申请日：2010-06-08

申请人： SungChang Lee ,  Brian Thornton ,  Mike Suk ,  SeungMo Kang

发明人： SungChang Lee ,  Brian Thornton ,  Mike Suk ,  SeungMo Kang

IPC分类号： G11B27/36 ,  G11B21/02

CPC分类号： G11B27/36 ,  G11B5/6029 ,  G11B5/6076 ,  G11B19/048

摘要： This application discloses a hard disk drive and a control circuit that are configured to determine touchdown by determining the SAGC for a track, removing the repeatable component of the SAGC to create the non-repeatable component and determining an indication of clearance irregularity and/or touch down when the standard deviation of the non-repeatable component spikes. These operations may create a defect map and/or a Flying height On Demand (FOD) control table in or for the hard disk drive as products of operating the hard disk drive.

摘要翻译： 本申请公开了一种硬盘驱动器和控制电路，其被配置为通过确定用于轨道的SAGC来确定触地，除去SAGC的可重复部件以创建不可重复的部件并确定间隙不规则性和/或触摸的指示 当不可重复组件的标准偏差峰值时下降。 这些操作可以在硬盘驱动器中或硬盘驱动器上创建缺陷映射和/或飞行高度随选（FOD）控制表，作为操作硬盘驱动器的产品。

公开(公告)号：US08014106B2

公开(公告)日：2011-09-06

申请号：US11077651

申请日：2005-03-11

申请人： Walton Fong ,  Donald R. Gillis ,  Remmelt Pit ,  Mike Suk

发明人： Walton Fong ,  Donald R. Gillis ,  Remmelt Pit ,  Mike Suk

IPC分类号： G11B5/48

CPC分类号： G11B5/4826 ,  G11B5/40 ,  G11B5/6005

摘要： An apparatus and method for modifying a slider to increase head to disk interface reliability for contact recording systems. The method provides a suspension for reaching over a disk. A slider having a read/write head element on a trailing edge (TE) portion is also provided, the slider coupled with the suspension. In addition, an increased dynamic pitch of the slider is provided, the increased dynamic pitch increasing the height of a leading edge (LE) portion of the slider with respect to the disk and reducing the height of the TE portion of the slider with respect to the disk, wherein vertical motion of the TE portion does not collapse an air bearing provided by the LE of the slider flying above the disk.

摘要翻译： 一种用于修改滑块以提高接触记录系统的磁头与磁盘接口可靠性的装置和方法。 该方法提供了一个到达磁盘的悬架。 还提供了在后缘（TE）部分上具有读/写头元件的滑块，该滑块与该悬架联接。 此外，提供了滑块的增加的动态间距，增加的动态间距增加了滑块相对于盘的前缘（LE）部分的高度，并且相对于滑块减小了滑块的TE部分的高度 所述盘，其中所述TE部分的垂直运动不会使在所述盘上方滑动的滑块的LE所提供的空气轴承折叠。

公开(公告)号：US07224547B2

公开(公告)日：2007-05-29

申请号：US11246605

申请日：2005-10-06

申请人： Mike Suk

发明人： Mike Suk

IPC分类号： G11B21/02

CPC分类号： G11B27/36 ,  G11B5/58 ,  G11B5/607 ,  G11B21/21 ,  G11B2220/20

摘要： A method for increasing reliability during a read and/or write operation in a disk drive having a head. Data is read from a disk using a head. An amplitude of a signal obtained during reading the data is measured. A degree of variation in the signal amplitude is determined as a function of a position of the head relative to the disk. The head is selectively heated based on the variation in the signal amplitude for inducing protrusion of the head, thereby selectively reducing a fly height of the head for reducing variations of a read signal created by the head during a read operation and/or magnetic fields created by the head during a write operation.

摘要翻译： 一种用于在具有头部的磁盘驱动器中在读取和/或写入操作期间增加可靠性的方法。 使用磁头从磁盘中读取数据。 测量在读取数据期间获得的信号的幅度。 信号幅度的变化程度被确定为磁头相对于磁盘的位置的函数。 基于用于引起头部突出的信号幅度的变化来选择性地加热头部，从而选择性地降低头部的飞行高度，以减少在读取操作期间由头部产生的读取信号的变化和/或产生的磁场 在写操作期间由头。

公开(公告)号：US07054084B2

公开(公告)日：2006-05-30

申请号：US10652727

申请日：2003-08-29

申请人： Walton Fong ,  Remmelt Pit ,  Mike Suk

发明人： Walton Fong ,  Remmelt Pit ,  Mike Suk

IPC分类号： G11B27/36 ,  G11B21/02

CPC分类号： G11B21/22 ,  G11B5/39 ,  G11B19/04

摘要： A method, apparatus and program storage device for sensing increased resistance changes in an MR element to detect MR sensor events. The initial MR resistance for each slider is recorded during the drive build. The MR resistance is periodically monitored at later stages of the drive build and during normal operation. The later MR sensor resistance measurements are compared to the baseline measurement taken during the drive build to determine if an MR sensor event occurs, such as contact being made between the MR sensor and the recording medium or an MR sensor being positioned ON or OFF the ramp.

摘要翻译： 一种用于感测MR元件中增加的电阻变化以检测MR传感器事件的方法，装置和程序存储装置。 在驱动器构建期间记录每个滑块的初始MR电阻。 在驱动器构建的较后阶段和正常操作期间，定期监视MR电阻。 将后面的MR传感器电阻测量与在驱动器构建期间进行的基线测量进行比较，以确定MR传感器事件是否发生，例如在MR传感器和记录介质之间进行接触或MR传感器位于斜坡 。

公开(公告)号：US07009801B2

公开(公告)日：2006-03-07

申请号：US10670948

申请日：2003-09-25

申请人： Remmelt Pit ,  Mike Suk

发明人： Remmelt Pit ,  Mike Suk

IPC分类号： G11B21/02

CPC分类号： G11B5/54 ,  G11B21/12 ,  G11B21/22

摘要： A hard disk drive establishes a roll static attitude (RSA) of a slider during operation to be zero during normal operation and to be non-zero during load/unload from a ramp. Specifically, a RSA bias mechanism such as a piezoelectric layer can be coupled to the slider suspension to bend the flexure of the suspension during load/unload so that the slider inner edge is higher than the outer edge. Consequently, any slider-disk contact that occurs during load/unload will be at the outer edge of the slider, where data is not expected to be on the disk.

摘要翻译： 在正常操作期间，硬盘驱动器在操作期间建立滑块的滚动静止姿态（RSA）为零，并且在从斜坡加载/卸载期间将非零。 具体地，诸如压电层的RSA偏置机构可以耦合到滑块悬架，以在加载/卸载期间弯曲悬架的挠曲，使得滑块内边缘高于外边缘。 因此，在加载/卸载期间发生的任何滑块 - 磁盘触点将位于滑块的外边缘，其中数据不会在磁盘上。

公开(公告)号：US20060023331A1

公开(公告)日：2006-02-02

申请号：US10903988

申请日：2004-07-30

申请人： Karl Flechsig ,  Mike Suk

发明人： Karl Flechsig ,  Mike Suk

IPC分类号： G11B15/12 ,  G11B21/02

CPC分类号： G11B5/314 ,  G11B5/455 ,  G11B5/6005 ,  G11B5/6064 ,  G11B5/607

摘要： A disk drive with switchable power levels for the heaters in the sliders is disclosed. The invention includes a switch for the electrical circuit of each heater which selects between two or more voltages to apply to the power control element and the heater with at least a high and a low voltage option. The heater power control circuit dissipates a certain amount of heat as a part of the control process. By having a low voltage option the disk drive can save power and reduce the amount of heat dissipated by the heater control circuit when high power is not required. The programmable switch is controlled by the drive control system. The high power setting can be used during manufacturing testing or otherwise if higher heater power is needed. The low power setting is used for normal operation or to save power.

公开(公告)号：US06917496B2

公开(公告)日：2005-07-12

申请号：US09946036

申请日：2001-09-04

申请人： Donald Ray Gillis ,  Mike Suk

发明人： Donald Ray Gillis ,  Mike Suk

IPC分类号： G11B5/54 ,  G11B21/22

CPC分类号： G11B5/54

摘要： A hard disk drive utilizes a spacer ring at its inner diameter to load and unload the read/write heads. During relatively small shock events, the actuator is retained relative to the disk through a circumferential groove in the spacer ring. A complementary protrusion on the load/unload tab extends from the actuator into the groove to complete the retention. A tribological coating on the spacer ring and/or protrusion significantly reduces wear therebetween. However, during large shock events an inertial latch is used by the system to hold the actuator in place.

摘要翻译： 硬盘驱动器在其内径处使用间隔环来加载和卸载读/写头。 在相对较小的冲击事件期间，致动器通过间隔环中的周向槽相对于盘保持。 装载/卸载翼片上的互补突起从致动器延伸到槽中以完成保持。 间隔环和/或突起上的摩擦学涂层显着地减少了它们之间的磨损。 然而，在大的冲击事件期间，系统使用惯性闩锁来将致动器保持在适当位置。

公开(公告)号：US20050052773A1

公开(公告)日：2005-03-10

申请号：US10656023

申请日：2003-09-05

申请人： Mike Suk

发明人： Mike Suk

IPC分类号： G11B5/58 ,  G11B5/60 ,  G11B21/02 ,  G11B21/21 ,  G11B27/36

CPC分类号： G11B27/36 ,  G11B5/58 ,  G11B5/607 ,  G11B21/21 ,  G11B2220/20

摘要： A method for increasing reliability during a read and/or write operation in a disk drive having a head. Data is read from a disk using a head. An amplitude of a signal obtained during reading the data is measured. A degree of variation in the signal amplitude is determined as a function of a position of the head relative to the disk. The head is selectively heated based on the variation in the signal amplitude for inducing protrusion of the head, thereby selectively reducing a fly height of the head for reducing variations of a read signal created by the head during a read operation and/or magnetic fields created by the head during a write operation.

摘要翻译： 一种用于在具有头部的磁盘驱动器中在读取和/或写入操作期间增加可靠性的方法。 使用磁头从磁盘中读取数据。 测量在读取数据期间获得的信号的幅度。 信号幅度的变化程度被确定为磁头相对于磁盘的位置的函数。 基于用于引起头部突出的信号幅度的变化来选择性地加热头部，从而选择性地降低头部的飞行高度，以减少在读取操作期间由头部产生的读取信号的变化和/或产生的磁场 在写操作期间由头。