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1. 发明授权

US06924959B1 Reducing estimation period for repeatable runout errors in a disk drive 失效
标题翻译：减少磁盘驱动器中可重复的跳动错误的估计周期
公开(公告)号：US06924959B1
公开(公告)日：2005-08-02
申请号：US10651408
申请日：2003-08-29
申请人： Hemant Melkote , Robert J. McNab , David D. Nguyen , John Yin Kwong Li
发明人： Hemant Melkote , Robert J. McNab , David D. Nguyen , John Yin Kwong Li
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A method for reducing an estimation period for repeatable runout (RRO) errors in a disk drive comprising a head, a disk surface having a track partitioned by servo-wedges, and a servo control system for controlling the movement of the head relative to a track during revolutions of the disk. The method includes estimating the RRO errors of the track based on a) a series of position error signal values obtained during a current revolution of the disk surface, and b) a previous estimation of the RRO errors of the track obtained during a previous revolution of the disk surface and determining a differential value between a first measure of the estimated RRO errors and a second measure of the previous estimation of RRO errors, and repeating the estimating and determining for subsequent revolutions of the disk surface until the determined differential value is smaller than a pre-selected threshold value.
摘要翻译：一种用于减少磁盘驱动器中可重复跳动（RRO）误差的估计周期的方法，包括磁头，具有由伺服楔形分隔的磁道的磁盘表面以及用于控制磁头相对于磁道的运动的伺服控制系统在盘的转动期间。该方法包括：基于a）在磁盘表面的当前旋转期间获得的一系列位置误差信号值来估计轨道的RRO误差，以及b）先前对先前转动期间获得的轨道的RRO误差的估计磁盘表面，并且确定估计的RRO误差的第一测量值与先前RRO误差估计的第二测量值之间的差值，并重复估计并确定盘表面的后续转数，直到所确定的微分值小于预先选择的阈值。

2. 发明授权

US06900958B1 Method and disk drive for improving head position accuracy during track following through real-time identification of external vibration and monitoring of write-unsafe occurrences 失效
标题翻译：方法和磁盘驱动器，用于通过实时识别外部振动和监视写入不安全事件来提高跟踪跟踪期间的头位置精度
公开(公告)号：US06900958B1
公开(公告)日：2005-05-31
申请号：US10632434
申请日：2003-07-31
申请人： Li Yi , Yanbin Song , David A. Spaulding , Arafat M. Butt , Robert J. McNab , David D. Nguyen
发明人： Li Yi , Yanbin Song , David A. Spaulding , Arafat M. Butt , Robert J. McNab , David D. Nguyen
IPC分类号： G11B5/55 , G11B5/596
CPC分类号： G11B5/59627 , G11B5/5582 , G11B5/59694
摘要： A method is disclosed for improving head position accuracy in a disk drive during track following of concentric data storage tracks through real-time identification of external vibration and monitoring of write-unsafe (WUS) occurrences. In the method, after a seek operation to a predetermined data storage track, the track is followed using a servo control loop having a nominal gain and responsive to a position error signal (PES). After waiting a vibration detection delay period, occurrences of the PES exceeding a WUS limit are counted generating a WUS limit exception count. Also, a property of a variance is determined from spectral power values generated from the PES during track following. If the WUS limit exception count exceeds a first threshold, and if the property of the variance exceeds a second threshold, the nominal gain is increased to a vibration gain within a frequency band, to attenuate the effect of external vibration.
摘要翻译：公开了一种用于通过实时识别外部振动和监视写入不安全（WUS）事件来提高同步数据存储轨道跟踪期间磁盘驱动器中磁头位置精度的方法。在该方法中，在对预定数据存储轨迹进行搜索操作之后，使用具有额定增益并响应于位置误差信号（PES）的伺服控制回路跟踪轨道。在等待振动检测延迟时间之后，对超出WUS限制的PES的发生进行计数，生成WUS限制异常计数。此外，由跟踪期间的PES生成的频谱功率值确定方差的属性。如果WUS限制异常计数超过第一阈值，并且如果方差性质超过第二阈值，则标称增益增加到频带内的振动增益，以衰减外部振动的影响。

3. 发明授权

US08865091B2 Multilayer processing devices and methods 有权
标题翻译：多层处理设备和方法
公开(公告)号：US08865091B2
公开(公告)日：2014-10-21
申请号：US12749763
申请日：2010-03-30
申请人： Joel R. Dufresne , Bryan C. Feisel , Theresa J. Gerten , Brent R. Hansen , David D. Nguyen
发明人： Joel R. Dufresne , Bryan C. Feisel , Theresa J. Gerten , Brent R. Hansen , David D. Nguyen
IPC分类号： G01N3/00 , B01L3/00 , G01N21/03
CPC分类号： B01L3/502715 , B01L3/502707 , B01L2200/12 , B01L2300/0812 , B01L2300/0816 , B01L2300/0864 , B01L2300/0887 , B01L2300/168 , G01N21/0303 , Y10S436/809 , Y10T156/1002 , Y10T156/1052 , Y10T156/1082
摘要： Sample processing devices that include transmissive layers and control layers to reduce or eliminate cross-talk between process chambers in the processing device are disclosed. The transmissive layers may transmit significant portions of signal light and/or interrogation light while the control layers block significant portions of signal light and/or interrogation light. Methods of manufacturing processing devices that include transmissive layers and control layers are also disclosed. The methods may involve continuous forming processes including co-extrusion of materials to form the transmissive layer and control layer in a processing device, followed by formation of the process chambers in the control layer. Alternatively, the methods may involve extrusion of materials for the control layer, followed by formation of process chambers in the control layer.
摘要翻译：公开了包括透射层和控制层以减少或消除处理装置中的处理室之间的串扰的样品处理装置。透射层可以传输信号光和/或询问光的大部分，同时控制层阻挡信号光和/或询问光的重要部分。还公开了制造包括透射层和控制层的处理装置的方法。所述方法可以包括连续的成形方法，包括共挤出材料以在处理装置中形成透射层和控制层，随后在控制层中形成处理室。或者，所述方法可以包括挤出用于对照层的材料，随后在对照层中形成处理室。

4. 发明授权

US5888119A Method for providing a clear surface finish on glass 失效
公开(公告)号：US5888119A
公开(公告)日：1999-03-30
申请号：US813228
申请日：1997-03-07
申请人： Todd J. Christianson , David D. Nguyen , Robert G. Visser
发明人： Todd J. Christianson , David D. Nguyen , Robert G. Visser
IPC分类号： B24B13/01 , B24D3/28 , B24D11/00 , B24B1/00
CPC分类号： B24B13/01 , B24D11/00 , B24D3/28
摘要： A method for polishing a glass workpiece is provided that includes contacting the glass workpiece having an initial Ra with an abrasive article comprising a three-dimensional abrasive coating bonded to a backing, applying a liquid at an interface between the glass workpiece and the abrasive article; moving the glass workpiece and the abrasive article relative to one another; and reducing the initial Ra to a final Ra. The abrasive articles are capable of rapid removal of glass stock from a glass test blank and reducing the surface finish using an RPP test procedure.

5. 发明授权

US07054098B1 Disk drive employing asymmetric acceleration/deceleration pulses for acoustic noise reduction during unlatch 有权
标题翻译：磁盘驱动器采用非对称加减速脉冲进行声音降噪解锁
公开(公告)号：US07054098B1
公开(公告)日：2006-05-30
申请号：US10860339
申请日：2004-06-01
申请人： Jie Yu , David D. Nguyen
发明人： Jie Yu , David D. Nguyen
IPC分类号： G11B5/596
CPC分类号： G11B5/54
摘要： A disk drive is disclosed comprising a disk, an actuator arm, a head connected to a distal end of the actuator arm, and a voice coil motor (VCM) for rotating the actuator arm about a pivot to actuate the head over the disk, wherein the VCM rotates the actuator arm into a latched positioned when the disk drive is idle. Disk drive control circuitry unlatches the actuator arm by applying a driving current to the VCM according to an open-loop current profile. The open-loop current profile comprises an acceleration pulse having an acceleration magnitude and an acceleration interval, and a deceleration pulse having a deceleration magnitude and a deceleration interval. The deceleration magnitude is substantially smaller than the acceleration magnitude, and the deceleration interval is substantially longer than the acceleration interval, to thereby attenuate acoustic noise when unlatching the actuator arm.
摘要翻译：公开了一种磁盘驱动器，其包括盘，致动器臂，连接到致动器臂的远端的头部，以及用于使致动器臂围绕枢轴旋转的音圈电机（VCM），以将头部驱动在盘上，其中当磁盘驱动器空闲时，VCM将致动器臂旋转到锁定位置。磁盘驱动器控制电路通过根据开环电流曲线向VCM施加驱动电流来使执行器臂松开。开环电流曲线包括具有加速度大小和加速度间隔的加速度脉冲以及具有减速幅度和减速间隔的减速脉冲。减速度幅度明显小于加速度大小，并且减速区间基本上比加速间隔长，从而在解锁致动器臂时衰减声音噪声。

6. 发明授权

US06231629B1 Abrasive article for providing a clear surface finish on glass 有权
标题翻译：用于在玻璃上提供清晰表面光洁度的磨料制品
公开(公告)号：US06231629B1
公开(公告)日：2001-05-15
申请号：US09148368
申请日：1998-09-04
申请人： Todd J. Christianson , David D. Nguyen , Robert G. Visser , Soon C. Park
发明人： Todd J. Christianson , David D. Nguyen , Robert G. Visser , Soon C. Park
IPC分类号： B24D1100
CPC分类号： B32B3/30 , B24B13/00 , B24B13/01 , B24D3/28 , B24D11/00 , B24D2203/00 , B32B27/20 , B32B2255/26 , B32B2475/00 , C09K3/1409
摘要： An abrasive article is provided which comprises a backing; and at least one three-dimensional abrasive coating comprising diamond particles dispersed within a binder bonded to a surface of the backing, the binder comprising a cured binder precursor including a urethane acrylate oligomer. The abrasive article is capable of rapid glass stock removal coupled with reducing the surface finish as indicated by reduced Ra values using an RPP test procedure.
摘要翻译：提供了一种磨料制品，其包括背衬; 以及至少一种包含金刚石颗粒的三维磨料涂层，所述磨料涂层分散在粘合到背衬表面上的粘合剂中，所述粘合剂包含固化的粘合剂前体，其包含氨基甲酸酯丙烯酸酯低聚物研磨制品能够快速的玻璃原料清除，并减少表面光洁度，如使用RPP测试程序降低的Ra值所示。

7. 发明授权

US07253582B1 Disk drive estimating angular position of spindle motor during spin-up by computing differences in winding current rise times 有权
标题翻译：磁盘驱动器通过计算绕组电流上升时间的差异来估算主轴电机在起动期间的角位置
公开(公告)号：US07253582B1
公开(公告)日：2007-08-07
申请号：US10856320
申请日：2004-05-28
申请人： Jianghong Ding , Chuanwen Ji , David D. Nguyen
发明人： Jianghong Ding , Chuanwen Ji , David D. Nguyen
IPC分类号： G05B1/06
CPC分类号： G11B19/20 , G11B19/2054
摘要： A disk drive is disclosed comprising a spindle motor having a plurality of windings including at least a first winding, a second winding, and a third winding. During a spin-up operation, a voltage is applied to the first winding and a first rise time is measured for current flowing through the first winding to reach a predetermined threshold. A voltage is applied to the second winding and a second rise time is measured for current flowing through the second winding to reach a predetermined threshold. A voltage is applied to the third winding and a third rise time is measured for current flowing through the third winding to reach a predetermined threshold. A difference is computed in response to the first rise time, the second rise time, and the third rise time, and an angular position of the spindle motor is estimated by computing an arctangent in response to the difference.
摘要翻译：公开了一种磁盘驱动器，其包括具有包括至少第一绕组，第二绕组和第三绕组的多个绕组的主轴电动机。在升压操作期间，向第一绕组施加电压，并且测量流过第一绕组的电流达到预定阈值的第一上升时间。对第二绕组施加电压，并且测量流过第二绕组的电流达到预定阈值的第二上升时间。对第三绕组施加电压，并且测量流过第三绕组的电流达到预定阈值的第三上升时间。响应于第一上升时间，第二上升时间和第三上升时间来计算差值，并且通过响应于该差异计算反正切来估计主轴电动机的角位置。

8. 发明授权

US06579601B2 Conformable multilayer films 有权
标题翻译：合适的多层膜
公开(公告)号：US06579601B2
公开(公告)日：2003-06-17
申请号：US09778523
申请日：2001-02-07
申请人： Richard A. Kollaja , David D. Nguyen , Ronald S. Steelman , Buren R. Ree , Steven D. Solomonson , Philip D. Radovanovic
发明人： Richard A. Kollaja , David D. Nguyen , Ronald S. Steelman , Buren R. Ree , Steven D. Solomonson , Philip D. Radovanovic
IPC分类号： B32B702
CPC分类号： B32B27/08 , B32B7/02 , B32B7/12 , B32B27/00 , B32B2307/4026 , B32B2307/546 , C09J7/29 , C09J2201/162 , C09J2429/006 , Y10T428/24942 , Y10T428/2495 , Y10T428/28 , Y10T428/2848 , Y10T428/31576 , Y10T428/31746 , Y10T428/31797 , Y10T428/31855 , Y10T428/31909 , Y10T428/31913 , Y10T428/31928
摘要： Conformable multilayer films having alternating layers of a stiff polymeric material and a flexible polymeric material are described.
摘要翻译：描述了具有刚性聚合物材料和柔性聚合材料的交替层的一致性多层膜。

9. 发明授权

US5910471A Abrasive article for providing a clear surface finish on glass 失效
标题翻译：用于在玻璃上提供清晰表面光洁度的磨料制品
公开(公告)号：US5910471A
公开(公告)日：1999-06-08
申请号：US813878
申请日：1997-03-07
申请人： Todd J. Christianson , David D. Nguyen , Robert G. Visser
发明人： Todd J. Christianson , David D. Nguyen , Robert G. Visser
IPC分类号： B24B13/01 , B24D3/28 , B24D11/00
CPC分类号： B24D3/28 , B24B13/01 , B24D11/00
摘要： An abrasive article is provided which comprises a backing; and at least one three-dimensional abrasive coating comprising diamond particles dispersed within a binder bonded to a surface of the backing, the binder comprising a cured binder precursor including a urethane acrylate oligomer. The abrasive article is capable of rapid glass stock removal coupled with reducing the surface finish as indicated by reduced Ra values using an RPP test procedure.
摘要翻译：提供了一种磨料制品，其包括背衬; 以及至少一种包含金刚石颗粒的三维磨料涂层，所述磨料涂层分散在粘合到背衬表面上的粘合剂中，所述粘合剂包含固化的粘合剂前体，其包含氨基甲酸酯丙烯酸酯低聚物研磨制品能够快速的玻璃原料清除，并减少表面光洁度，如使用RPP测试程序降低的Ra值所示。

10. 发明授权

US5570723A Support system and method for jacketed multiple cryogenic pipes for cyrogenic fluid transfer 失效
标题翻译：用于血液流体转移的夹套多个低温管的支撑系统和方法
公开(公告)号：US5570723A
公开(公告)日：1996-11-05
申请号：US296831
申请日：1994-08-26
申请人： Kwang-Fu P. Hwang , Alexander P. Varghese , David D. Nguyen , Thomas Joseph
发明人： Kwang-Fu P. Hwang , Alexander P. Varghese , David D. Nguyen , Thomas Joseph
IPC分类号： F16L7/00 , F16L9/18
CPC分类号： F16L7/00
摘要： An assembly and method for supporting a plurality of individually insulated pipes or conduits inside a vacuum jacket where the insulated pipes are positioned or fixed relative to one another and the inside surface of the vacuum jacket.
摘要翻译：一种用于在真空护套内支撑多个独立绝缘的管道或管道的组件和方法，其中绝缘管相对于彼此和真空护套的内表面定位或固定。

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