公开(公告)号：US06674611B2

公开(公告)日：2004-01-06

申请号：US10040557

申请日：2002-01-04

申请人： Sanford A. Bolasna ,  Soo-Choon Kang

发明人： Sanford A. Bolasna ,  Soo-Choon Kang

IPC分类号： G11B560

CPC分类号： G11B5/6005

摘要： A dual etch depth slider air bearing surface includes a front pad disposed along the front and partially along the sides of the slider and a rear pad partially disposed along the rear of the slider, wherein a skewed center rail connects the front pad to the rear pad. Extending above the rear pad is a V-shaped ABS pad and extending above the front pad are two leading edge ABS pads that are separated by a channel towards the longitudinal center of the slider. The design enables the slider to fly much higher over the landing zone of the disk than at the data zone and provides for a steep take off profile followed by a rapid descend over the data zone.

摘要翻译： 双蚀刻深度滑动器空气轴承表面包括沿着前部设置并部分沿着滑块的侧面的前垫，以及沿着滑块的后部部分地设置的后垫，其中倾斜的中心轨将前垫连接到后垫 。 在后垫上方延伸的是V形ABS垫，并且在前垫上方延伸的两个前缘ABS垫片由通道朝向滑块的纵向中心分开。 该设计使得滑块在盘的着陆区域比在数据区域飞得更高，并提供了一个陡峭的起飞档案，随后在数据区域迅速下降。

公开(公告)号：US08786976B1

公开(公告)日：2014-07-22

申请号：US13237727

申请日：2011-09-20

申请人： Soo-Choon Kang ,  Siri S. Weerasooriya ,  Scott A. Ottele

发明人： Soo-Choon Kang ,  Siri S. Weerasooriya ,  Scott A. Ottele

IPC分类号： G11B21/02

CPC分类号： G11B21/12

摘要： A disk drive is disclosed comprising a head actuated over a disk surface, the head comprising a fly height actuator for controlling a fly height of the head, and a ramp for parking the head. A ramp procedure is executed by applying a control signal to the fly height actuator to decrease the fly height and receiving a corresponding fly height signal, and detecting whether the head is on the ramp in response to the fly height signal.

摘要翻译： 公开了一种磁盘驱动器，其包括在磁盘表面上致动的磁头，该磁头包括用于控制磁头高度的飞行高度致动器和用于停放磁头的斜坡。 通过向飞行高度致动器施加控制信号以降低飞行高度并接收对应的飞行高度信号，并且响应于飞行高度信号检测磁头是否在斜坡上，执行斜坡程序。

公开(公告)号：US08699173B1

公开(公告)日：2014-04-15

申请号：US13224118

申请日：2011-09-01

申请人： Soo-Choon Kang ,  Hongchao T. Zhao ,  Siri S. Weerasooriya

发明人： Soo-Choon Kang ,  Hongchao T. Zhao ,  Siri S. Weerasooriya

IPC分类号： G11B21/02

CPC分类号： G11B5/6076

摘要： A disk drive is disclosed comprising a head actuated over a disk, and a fly height actuator operable to control a fly height of the head over the disk. A periodic control signal is applied to the fly height actuator, a frequency response of a touchdown metric at a frequency of the periodic control signal is measured, and a touchdown event is detected in response to the frequency response of the touchdown metric.

摘要翻译： 公开了一种盘驱动器，其包括在盘上致动的头部，以及可操作以控制头部在盘上的飞行高度的飞行高度致动器。 周期控制信号被施加到飞行高度致动器，测量在周期性控制信号的频率处的触地度量的频率响应，并且响应于触地度量的频率响应来检测触地事件。

公开(公告)号：US06333835B1

公开(公告)日：2001-12-25

申请号：US09379039

申请日：1999-08-23

申请人： Soo-Choon Kang ,  Sanford Anthony Bolasna ,  Oscar Jaime Ruiz

发明人： Soo-Choon Kang ,  Sanford Anthony Bolasna ,  Oscar Jaime Ruiz

IPC分类号： G11B1732

CPC分类号： G11B5/6005

摘要： A recording head for a disk drive with a load/unload mechanism has an air bearing on one surface. The air bearing comprises a patterned set of three air bearing pads, at least five shallow pockets and one deep pocket. A narrow gap extends from the deep pocket and separates leading ones of the air bearing pads and shallow pockets from each other. The air bearing pads have unique, step-shaped geometry and the rear pad is virtually free of any shallow area. This configuration gives the air bearing superior performance characteristics over prior art designs with load/unload mechanisms.

摘要翻译： 具有装载/卸载机构的磁盘驱动器的记录头在一个表面上具有空气轴承。 空气轴承包括一组图案的三个空气轴承垫，至少五个浅袋和一个深口袋。 狭窄的间隙从深口袋延伸出来，将先前的空气轴承垫和浅口袋彼此分开。 空气轴承垫具有独特的阶梯形几何形状，后垫实际上没有任何浅的区域。 这种配置给出了空气轴承比具有加载/卸载机构的现有技术设计的优异的性能特性。

公开(公告)号：US07436620B1

公开(公告)日：2008-10-14

申请号：US11754896

申请日：2007-05-29

申请人： Soo-Choon Kang ,  Liwei Song

发明人： Soo-Choon Kang ,  Liwei Song

IPC分类号： G11B21/02

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

摘要： A novel method of selecting an electrical power, to be applied to a subject head-based flying height actuator during operation of a disk drive, is disclosed and claimed. A touch-down power for each of a plurality of representative heads is detected. A relationship between back-off power and touchdown power for the plurality of representative heads is estimated. A touch-down power for the subject head is detected. A back-off power for the subject head is calculated using the estimated relationship and the detected touch-down power for the subject head. The electrical power to be applied to the subject head-based flying height actuator is selected to be equal to the detected touch-down power for the subject head minus the calculated back-off power for the subject head.

摘要翻译： 公开并要求保护一种在盘驱动器的操作期间选择施加到基于物体头部的飞行高度致动器的电力的新颖方法。 检测到多个代表性头中的每一个的触发功率。 估计多个代表性头部的退避功率和触地功率之间的关系。 检测到被摄体头的触控电源。 使用估计的关系和检测到的被摄体头的触下电功率来计算被摄体头的后退功率。 被施加到被摄体头部的飞行高度致动器的电力被选择为等于被检测头的检测到的下降功率减去所计算的对象头的退避功率。

公开(公告)号：US06477013B1

公开(公告)日：2002-11-05

申请号：US09710981

申请日：2000-11-09

申请人： Soo-Choon Kang ,  Mark C. McMaster ,  Tony Jing Zhang

发明人： Soo-Choon Kang ,  Mark C. McMaster ,  Tony Jing Zhang

IPC分类号： G11B1732

CPC分类号： G11B5/6005 ,  G11B5/1871 ,  Y10S977/834 ,  Y10S977/954

摘要： A slider air bearing design and method providing “writing of laser field” (WOLF) measurement without substantial fly height affect. A central pad at ion-mill height is formed in the cavity between the side rails and rear pad. The central pad allows correlation of WOLF crown measurement values with crown measurements obtain via optical interferometer. Also, the central pad provides good reflective areas while preventing degradation in fly height performance due to the rear pad geometry constraints required by the WOLF measurement process.

摘要翻译： 提供“写入激光场”（WOLF）测量的滑块空气轴承设计和方法没有大的飞高影响。 在侧轨和后垫之间的空腔中形成离子磨高度的中心衬垫。 中心垫允许通过光学干涉仪获得WOLF冠测量值与冠度测量值的相关性。 此外，中央衬垫提供良好的反射区域，同时防止由于WOLF测量过程所需的后垫几何约束而导致的飞行高度性能下降。

公开(公告)号：US07675707B1

公开(公告)日：2010-03-09

申请号：US12275989

申请日：2008-11-21

申请人： Hain-Ling Liu ,  Min Chen ,  Soo-Choon Kang

发明人： Hain-Ling Liu ,  Min Chen ,  Soo-Choon Kang

IPC分类号： G11B21/02

CPC分类号： G11B5/6064 ,  G11B5/6005

摘要： A disk drive is disclosed comprising a disk, a head actuated over the disk, and control circuitry operable to generate a fly height control signal. A fly height of the head is measured, and the measured fly height is combined with a target fly height and a feedforward signal, wherein the feedforward signal is generated according to: a1·cos(2πn1k/N)+b1·sin(2πn1k/N) where a1 and b1 are coefficients and 2πn1k/N represents a frequency of a repeatable disturbance in the fly height of the head.

摘要翻译： 公开了一种盘驱动器，其包括盘，在盘上致动的头以及可操作以产生飞高控制信号的控制电路。 测量头部的飞行高度，并将测量的飞行高度与目标飞行高度和前馈信号组合，其中前馈信号根据以下公式产生：a1·cos（2＆pgr; n1k / N）+ b1·sin（ 2＆pgr; n1k / N）其中a1和b1是系数，2＆pgr; n1k / N表示头部飞行高度中可重复干扰的频率。

公开(公告)号：US20080151408A1

公开(公告)日：2008-06-26

申请号：US11644695

申请日：2006-12-22

申请人： Soo-Choon Kang ,  Remmelt Pit

发明人： Soo-Choon Kang ,  Remmelt Pit

IPC分类号： G11B21/02

CPC分类号： G11B5/6052

摘要： In one embodiment and method of the present invention, an optical interference fly height (FH) test apparatus for measuring FH is disclosed, in accordance with an embodiment of the present invention, to include a slider, a transparent disk, means for directing a light beam directed between the slider and the disk, and means for iteratively measuring an estimated FH using at least two points of measurement on the slider when the slider is moved away from the disk at a pitch angle, wherein the estimated FH is computed as a function of the pitch angle and during each iteration, a previously-estimated FH is used to converge the estimated FH so that the estimated FH is within a predetermined range from the actual FH.

摘要翻译： 在本发明的一个实施例和方法中，根据本发明的实施例，公开了一种用于测量FH的光学干涉飞行高度（FH）测试装置，包括滑块，透明盘，用于引导光 指向滑块和盘之间的光束，以及当滑块以桨距角离开盘时，使用滑块上的至少两个测量点迭代地测量估计的FH的装置，其中估计的FH被计算为功能 并且在每次迭代期间，使用先前估计的FH来收敛估计的FH，使得估计的FH在从实际FH的预定范围内。

公开(公告)号：US06680821B2

公开(公告)日：2004-01-20

申请号：US09838701

申请日：2001-04-18

申请人： Soo-Choon Kang

发明人： Soo-Choon Kang

IPC分类号： G11B1732

CPC分类号： G11B21/21 ,  G11B5/6005

摘要： A dual depth slider air bearing surface that enables the slider to achieve a ramp fly height profile near the textured landing zone of a disk. The air bearing slider includes a slider body on which a U-shaped leading ABS pad is defined near and along a leading edge (relative to a moving recording medium) and partially along each side of the slider body. A front step pad extends from the leading edge section of the leading ABS pad to the leading edge of the slider body, at a reduced height relative to the height of the ABS pad. An asymmetric rear pad is defined along a longitudinal axis of the slider body and proximate to a trailing edge of the slider body. Extending above the rear pad is a trailing ABS pad, which has an asymmetric profile with respect to the longitudinal axis of the slider. The trailing ABS pad has a curved bowing profile towards the front of the slider body on the leading edge side of the trailing ABS pad.

摘要翻译： 双重深度滑块空气轴承表面，其使得滑块能够在盘的纹理化着陆区域附近实现斜坡飞行高度分布。 空气轴承滑块包括滑块主体，U形前导ABS垫在其上沿着​​前缘（相对于移动记录介质）并且部分地沿着滑块体的每一侧限定。 前踏板从前导ABS垫的前缘部分延伸到滑块体的前缘，相对于ABS垫的高度减小高度。 沿着滑块主体的纵向轴线并且靠近滑块体的后缘限定不对称的后垫。 在后垫上方延伸的是尾部ABS垫，其相对于滑块的纵向轴线具有不对称的轮廓。 尾部ABS垫在尾部ABS垫的前缘侧上具有朝向滑块体前部的弯曲弯曲轮廓。

公开(公告)号：US07974039B1

公开(公告)日：2011-07-05

申请号：US12486682

申请日：2009-06-17

申请人： Jianfeng Xu ,  Soo-Choon Kang ,  Kazuhiro Saito ,  Hongchao Tim Zhao

发明人： Jianfeng Xu ,  Soo-Choon Kang ,  Kazuhiro Saito ,  Hongchao Tim Zhao

IPC分类号： G11B21/02 ,  G11B27/36

CPC分类号： G11B5/6005 ,  G11B5/6064 ,  G11B5/6076

摘要： A disk drive to reduce head instability during disk drive manufacturing is disclosed. The disk drive comprises: a disk; a dynamic flying height (DFH) read/write head; a flying height actuator to control the spacing between the DFH read/write head and the disk; and a controller. The controller controls operations in the disk drive including applying a sloped increasing power between a first voltage and a second voltage to move the DFH read/write head towards the disk.

摘要翻译： 公开了一种在磁盘驱动器制造期间减少磁头不稳定性的磁盘驱动器。 磁盘驱动器包括：磁盘; 动态飞行高度（DFH）读/写头; 用于控制DFH读/写磁头和磁盘之间的间距的飞行高度执行器; 和控制器。 控制器控制磁盘驱动器中的操作，包括在第一电压和第二电压之间施加倾斜的增加功率，以将DFH读/写头朝向磁盘移动。