公开(公告)号：US06829115B2

公开(公告)日：2004-12-07

申请号：US10171133

申请日：2002-06-13

申请人： Xiong Liu ,  ChoonKiat Lim ,  YongJie Tang ,  Pow-Hing Yong

发明人： Xiong Liu ,  ChoonKiat Lim ,  YongJie Tang ,  Pow-Hing Yong

IPC分类号： G11B2736

CPC分类号： G11B5/59627 ,  G11B7/0953 ,  G11B19/20 ,  G11B21/106 ,  G11B33/08

摘要： An apparatus and method of indirectly measuring half frequency whirl in a spindle motor having a rotor adapted to rotate a disc having a track which is followed by a transducer head that is actuated by a control system is provided. Vibration signals produced at the transducer head while the transducer head follows the track are detected. The half frequency whirl is determined as a function of the detected vibration signals.

摘要翻译： 提供了一种间接测量具有转子的主轴电动机中的半频旋转的装置和方法，所述转子适于旋转具有由控制系统致动的传感器头跟随的轨道的盘。 检测在换能器头跟随轨道时在换能器头处产生的振动信号。 根据检测到的振动信号确定半频旋转。

公开(公告)号：US07328118B2

公开(公告)日：2008-02-05

申请号：US10731806

申请日：2003-12-09

申请人： Xiong Liu ,  ChoonKiat Lim ,  Kong Beng Terang Thia ,  Pow-Hing Yong

发明人： Xiong Liu ,  ChoonKiat Lim ,  Kong Beng Terang Thia ,  Pow-Hing Yong

IPC分类号： G01D1/00

CPC分类号： G11B5/5521 ,  G11B5/4806 ,  G11B25/043

摘要： The present invention is a method of determining mass unbalance of an actuator mechanism in a system. The method includes calculating a center of gravity in first x and y components with respect to a first coordinate system of the actuator mechanism. The method also includes calculating the center of gravity in second x and y components with respect to a second coordinate system of the actuator mechanism. The total mass unbalance of the actuator mechanism is then calculated.

摘要翻译： 本发明是确定系统中致动器机构的质量不平衡的方法。 该方法包括相对于致动器机构的第一坐标系来计算第一x和y分量中的重心。 该方法还包括相对于致动器机构的第二坐标系计算第二x和y分量中的重心。 然后计算执行器机构的总质量不平衡。

公开(公告)号：US20050125194A1

公开(公告)日：2005-06-09

申请号：US10731806

申请日：2003-12-09

申请人： Xiong Liu ,  ChoonKiat Lim ,  Kong Thia ,  Pow-Hing Yong

发明人： Xiong Liu ,  ChoonKiat Lim ,  Kong Thia ,  Pow-Hing Yong

IPC分类号： G06F15/00 ,  G11B5/48 ,  G11B5/55 ,  G11B25/04 ,  G11B25/08

CPC分类号： G11B5/5521 ,  G11B5/4806 ,  G11B25/043

摘要： The present invention is a method of determining mass unbalance of an actuator mechanism in a system. The method includes calculating a center of gravity in first x and y components with respect to a first coordinate system of the actuator mechanism. The method also includes calculating the center of gravity in second x and y components with respect to a second coordinate system of the actuator mechanism. The total mass unbalance of the actuator mechanism is then calculated.

摘要翻译： 本发明是确定系统中致动器机构的质量不平衡的方法。 该方法包括相对于致动器机构的第一坐标系来计算第一x和y分量中的重心。 该方法还包括相对于致动器机构的第二坐标系计算第二x和y分量中的重心。 然后计算执行器机构的总质量不平衡。

公开(公告)号：US20080284074A1

公开(公告)日：2008-11-20

申请号：US11749850

申请日：2007-05-17

申请人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

发明人： JuiJing Lim ,  Chenyang Ding ,  Xiong Liu ,  MingZhong Ding ,  KianKeong Ooi ,  ChoonKiat Lim

IPC分类号： F16F7/00 ,  H05K7/00

CPC分类号： G11B33/08

摘要： A shock absorber is provided that also includes vibration damping. The shock absorber includes at least one shock absorbing frame member that partially surrounds an electronic device enclosure. The shock absorber also includes at least two protrusions that protrude from the at least one shock absorbing frame member. Each protrusion extends beyond the at least one shock absorbing frame member from a recessed surface recessed into the at least one shock absorbing frame member.

摘要翻译： 还提供一种减震器，还包括减震。 减震器包括部分地围绕电子设备外壳的至少一个减震框架构件。 减震器还包括从至少一个减震框架构件突出的至少两个突起。 每个突起从凹入到所述至少一个减震框架构件的凹入表面延伸超过所述至少一个减震框架构件。

公开(公告)号：US07349174B2

公开(公告)日：2008-03-25

申请号：US10143137

申请日：2002-05-09

申请人： Qiang Bi ,  Xiong Liu ,  LeeLing Tan ,  Wen-Jun Cao ,  ChoonKiat Lim

发明人： Qiang Bi ,  Xiong Liu ,  LeeLing Tan ,  Wen-Jun Cao ,  ChoonKiat Lim

IPC分类号： G11B5/596

CPC分类号： G11B27/36 ,  G11B19/04 ,  G11B2220/20

摘要： A method of preventing a write operation to a disc in a disc drive during a shock event without the use of a separate shock sensor comprises steps of monitoring an actuator voice coil motor (VCM) control plant output signal, generating an actuator voice coil motor (VCM) plant model module output signal, comparing the VCM plant model module output signal to the VCM control plant module output signal to produce a difference signal, and triggering a write protect gate if the difference signal exceeds a predetermined threshold value. The system comprises a voice coil motor (VCM) control plant module sensitive to a shock event providing a VCM control plant module output, a voice coil motor (VCM) plant model module initially insensitive to the shock event producing a VCM plant model module output, a first comparator module coupled to receive the VCM control plant module output and the VCM plant model module output, operable to generate a difference signal between the model plant module output and the VCM control plant module output, and a triggering module receiving the difference signal for generating a write protect gate signal if the difference signal exceeds a predetermined shock threshold.

摘要翻译： 一种在不使用单独的冲击传感器的情况下防止在磁盘驱动器中对盘的写入操作的方法包括以下步骤：监视致动器音圈电机（VCM）控制电路输出信号，产生致动器音圈电机 VCM）工厂模块模块输出信号，将VCM工厂模块模块输出信号与VCM控制站模块输出信号进行比较，产生差分信号，如果差分信号超过预定阈值则触发写保护门。 该系统包括对提供VCM控制工厂模块输出的冲击事件敏感的音圈电机（VCM）控制工厂模块，对产生VCM工厂模块模块输出的冲击事件最初不敏感的音圈电机（VCM）工厂模型模块， 第一比较器模块，其耦合以接收VCM控制工厂模块输出和VCM工厂模块模块输出，可操作以在模型工厂模块输出和VCM控制工厂模块输出之间产生差分信号;以及触发模块，其接收差分信号 如果差分信号超过预定的冲击阈值，则产生写保护门信号。

公开(公告)号：US07675712B2

公开(公告)日：2010-03-09

申请号：US11482406

申请日：2006-07-07

申请人： Joseph Cheng-Tsu Liu ,  Xiong Liu ,  ChoonKiat Lim

发明人： Joseph Cheng-Tsu Liu ,  Xiong Liu ,  ChoonKiat Lim

IPC分类号： G11B5/54

CPC分类号： G11B5/54

摘要： An apparatus for unloading a moveable member comprises a ramp structure with an inclined surface. A lift tab of the moveable member advances along the ramp structure to the inclined surface while pivoting about a pivot point to undergo an increase in elevation above a base surface. The inclined surface has a slope determined in relation to angular deflection of the lift tab induced by said increase in elevation. Preferably, the slope of the inclined surface substantially matches an angle of the lift tab when the lift tab is disposed on the inclined surface. The inclined surface preferably constitutes a parking surface, and the ramp structure further preferably comprises an entry/exit ramp surface and a latch surface along which the lift tab travels to reach the parking surface. The moveable member preferably comprises a flexible suspension which supports a transducer adjacent a data storage medium in a data storage device.

摘要翻译： 用于卸载可移动构件的装置包括具有倾斜表面的斜坡结构。 可移动构件的提升翼片沿着斜坡结构前进到倾斜表面，同时围绕枢轴点枢转以在基座表面上方升高。 倾斜表面具有相对于由所述升高升高引起的升降片的角度偏转确定的斜率。 优选地，当提升翼片设置在倾斜表面上时，倾斜表面的斜率基本上匹配提升翼片的角度。 倾斜表面优选地构成停车表面，并且斜坡结构还优选地包括入口/出口斜面和闩锁表面，升降翼沿着该表面行进以到达停车表面。 可移动构件优选地包括柔性悬架，其支撑邻近数据存储装置中的数据存储介质的换能器。

公开(公告)号：US20080007874A1

公开(公告)日：2008-01-10

申请号：US11482406

申请日：2006-07-07

申请人： Joseph Cheng-Tsu Liu ,  Xiong Liu ,  ChoonKiat Lim

发明人： Joseph Cheng-Tsu Liu ,  Xiong Liu ,  ChoonKiat Lim

IPC分类号： G11B5/54

CPC分类号： G11B5/54

摘要： An apparatus for unloading a moveable member comprises a ramp structure with an inclined surface. A lift tab of the moveable member advances along the ramp structure to the inclined surface while pivoting about a pivot point to undergo an increase in elevation above a base surface. The inclined surface has a slope determined in relation to angular deflection of the lift tab induced by said increase in elevation. Preferably, the slope of the inclined surface substantially matches an angle of the lift tab when the lift tab is disposed on the inclined surface. The inclined surface preferably constitutes a parking surface, and the ramp structure further preferably comprises an entry/exit ramp surface and a latch surface along which the lift tab travels to reach the parking surface. The moveable member preferably comprises a flexible suspension which supports a transducer adjacent a data storage medium in a data storage device.

摘要翻译： 用于卸载可移动构件的装置包括具有倾斜表面的斜坡结构。 可移动构件的提升翼片沿着斜坡结构前进到倾斜表面，同时围绕枢轴点枢转以在基座表面上方升高。 倾斜表面具有相对于由所述升高升高引起的升降片的角度偏转确定的斜率。 优选地，当提升翼片设置在倾斜表面上时，倾斜表面的斜率基本上匹配提升翼片的角度。 倾斜表面优选地构成停车表面，并且斜坡结构还优选地包括入口/出口斜面和闩锁表面，升降翼沿着该表面行进以到达停车表面。 可移动构件优选地包括柔性悬架，其支撑邻近数据存储装置中的数据存储介质的换能器。

公开(公告)号：US20050185319A1

公开(公告)日：2005-08-25

申请号：US10785628

申请日：2004-02-24

申请人： Xiong Liu ,  Qiang Bi ,  TzeMing Pang ,  ChoonKiat Lim

发明人： Xiong Liu ,  Qiang Bi ,  TzeMing Pang ,  ChoonKiat Lim

IPC分类号： G11B5/596

CPC分类号： G11B5/59605 ,  G11B19/045

摘要： A method and apparatus for compensating for errors in servo systems. An improved zero acceleration path (ZAP) correction technique is provided, wherein selected tracks of a data storage device are used for ZAP processing in order to reduce the overall time required to perform error compensation for a storage device. For a given selected track to be ZAPed, track profiles of adjoining tracks are used in addition to the track profile of the selected track as part of the ZAP correction determination for the selected track. Using adjacent track profiles as part of the ZAP correction determination assists in mitigating AC track squeeze issues that would otherwise occur when performing selective track ZAPing.

摘要翻译： 一种补偿伺服系统误差的方法和装置。 提供了一种改进的零加速路径（ZAP）校正技术，其中数据存储设备的选定轨道用于ZAP处理，以便减少对存储设备进行错误补偿所需的总体时间。 对于给定的所选轨道要ZAPed，除了所选轨道的轨道轮廓之外，还使用相邻轨道的轨道轮廓，作为所选轨道的ZAP校正确定的一部分。 使用相邻轨道配置文件作为ZAP校正确定的一部分有助于减轻执行选择性跟踪ZAPing时会发生的AC轨道挤压问题。

公开(公告)号：US07167882B2

公开(公告)日：2007-01-23

申请号：US10659565

申请日：2003-09-10

申请人： WenXiang Xie ,  Xiong Liu ,  WeiLoon Ng ,  ChoonKiat Lim

发明人： WenXiang Xie ,  Xiong Liu ,  WeiLoon Ng ,  ChoonKiat Lim

IPC分类号： G06F1/02

CPC分类号： G06F7/588 ,  H03K3/84

摘要： True random numbers are generated from position error signals or like signals. The generator is not dependent on a potentially biased reference or threshold, and is capable of quickly generating true random numbers on demand. The present invention can be implemented as an integral functionality of a data storage device to control access to data stored in the data storage device. It can also be implemented in data storage devices for controlling access to host systems or host devices associated with the data storage devices.

摘要翻译： 真实的随机数是从位置误差信号或类似信号产生的。 发电机不依赖于潜在的偏置参考或阈值，并且能够根据需要快速产生真实的随机数。 本发明可以被实现为数据存储设备的整体功能，以控制对存储在数据存储设备中的数据的访问。 还可以在用于控制对与数据存储设备相关联的主机系统或主机设备的访问的数据存储设备中实现。

公开(公告)号：US06862155B2

公开(公告)日：2005-03-01

申请号：US10401358

申请日：2003-03-26

申请人： Yong Y. Yang ,  Qiang Bi ,  Xiong Liu ,  ChoonKiat Lim

发明人： Yong Y. Yang ,  Qiang Bi ,  Xiong Liu ,  ChoonKiat Lim

IPC分类号： G11B5/596

CPC分类号： G11B5/59627 ,  G11B19/045

摘要： Position error values are obtained from a transducer head while following a plurality of servo tracks with a servo loop that band-blocks a frequency range that includes F, a nominal rotation frequency. An estimated difference distribution is derived from the position error values, the difference distribution having a first frequency component at a positive frequency ≦2*F. A scalar track squeeze magnitude indicator is derived from the estimated difference distribution so that the indicator to be transmitted depends on the frequency component.

摘要翻译： 位置误差值是从一个换能器头获得的，同时跟随一个伺服回路的多个伺服轨道，该伺服回路对包括F的标称旋转频率的频率范围进行带阻。 从位置误差值导出估计的差分布，差分分布具有正频率<= 2 * F的第一频率分量。 从估计的差分分布导出标量轨迹挤压幅度指示符，使得要发送的指示符取决于频率分量。