公开(公告)号：US09092207B2

公开(公告)日：2015-07-28

申请号：US12833900

申请日：2010-07-09

申请人： Yu Nang Zai ,  James Lai Kein Chang ,  Kah Liang Gan ,  Pei Koh Lee ,  Wei Loon Ng ,  Lina Wang

发明人： Yu Nang Zai ,  James Lai Kein Chang ,  Kah Liang Gan ,  Pei Koh Lee ,  Wei Loon Ng ,  Lina Wang

IPC分类号： G06F1/26

CPC分类号： G06F1/26 ,  G06F1/263 ,  G06F1/266

摘要： A data bus can supply power from a first power source to a sink device. The data bus is coupled to a second power source. An electrical current from the second power source supplements an electrical current on the data bus if the voltage on the data bus decreases to less than a threshold value.

摘要翻译： 数据总线可以从第一电源向宿设备供电。 数据总线耦合到第二电源。 如果数据总线上的电压降至小于阈值，则来自第二电源的电流补充数据总线上的电流。

公开(公告)号：US06693756B2

公开(公告)日：2004-02-17

申请号：US09894329

申请日：2001-06-27

申请人： Hweepeng Teo ,  Myint Ngwe ,  BengTheam Ko ,  FongKheon Chong ,  Kah Liang Gan

发明人： Hweepeng Teo ,  Myint Ngwe ,  BengTheam Ko ,  FongKheon Chong ,  Kah Liang Gan

IPC分类号： G11B503

CPC分类号： G11B5/09 ,  G11B5/012 ,  G11B33/14 ,  G11B2005/0008 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0016 ,  G11B2005/0018

摘要： Apparatus and method for transferring data in a disc drive data handling system. A read/write head having separate write and read elements is used to write data to and transduce data from a disc recording surface. A preamplifier driver circuit applies write currents to the write element to write data to the recording surface and to apply a first read bias signal of selected, nonzero magnitude to the read element to transduce data from the recording surface. In response to the assertion of a write gate signal, the preamplifier driver circuit generates a second read bias signal of selected, nonzero magnitude and applies the second read bias signal to the read element while applying the write currents to the write element. This reduces the potential for damage to the read element due to cross-talk noise induced in the read bias signal from magnetic coupling between the read and write elements.

摘要翻译： 用于在盘驱动器数据处理系统中传送数据的装置和方法。 具有单独写入和读取元件的读/写头用于向盘记录表面写入数据并从盘记录表面转换数据。 前置放大器驱动器电路向写入元件施加写入电流以将数据写入记录表面，并将所选择的非零幅度的第一读取偏置信号施加到读取元件以从记录表面转换数据。 响应于写入门信号的确认，前置放大器驱动器电路产生所选择的非零幅度的第二读偏置信号，并将第二读偏置信号施加到读元件，同时向写元件施加​​写电流。 这就降低了读取元件由于在读取和写入元件之间的磁耦合引起的读取偏置信号中引起的串扰噪声的可能性。

公开(公告)号：US06549020B2

公开(公告)日：2003-04-15

申请号：US09792884

申请日：2001-02-23

申请人： Eng Hock Lim ,  Quek Leong Choo ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

发明人： Eng Hock Lim ,  Quek Leong Choo ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

IPC分类号： G01R2708

CPC分类号： G11B5/5526 ,  G11B5/5521

摘要： A method for characterizing a bearing cartridge based on a preload applied to the bearing cartridge used in a disc drive, to increase disc drive yield rates. The method begins by loading the bearing cartridge on to a test fixture and to an actuator assembly such that the actuator is rotatably attached to the base by the bearing cartridge. Then, the method includes inducing a steady swing in the actuator. Then, the method includes measuring a voltage drop that occurs across the bearing cartridge during the steady swing to characterize the preload applied to the bearing cartridge.

摘要翻译： 一种用于基于施加到在盘驱动器中使用的轴承盒的预加载来表征轴承盒的方法，以增加盘驱动器的屈服率。 该方法开始于将轴承盒装载到测试夹具和致动器组件上，使得致动器通过轴承筒可旋转地附接到基座。 然后，该方法包括在致动器中引起稳定的摆动。 然后，该方法包括测量在稳定摆动期间在轴承盒上发生的电压降，以表征施加到轴承盒的预载荷。

公开(公告)号：US06215266B1

公开(公告)日：2001-04-10

申请号：US09100761

申请日：1998-06-17

申请人： Nan Ling Goh ,  James Lai Kein Chang ,  Yam Pheng Tham ,  Utt Heng Kan ,  Kah Liang Gan

发明人： Nan Ling Goh ,  James Lai Kein Chang ,  Yam Pheng Tham ,  Utt Heng Kan ,  Kah Liang Gan

IPC分类号： H02P620

CPC分类号： H02M1/34 ,  H02M2001/348 ,  H02P6/14 ,  H02P6/20

摘要： A system for low acoustic noise spindle motor commutation is disclosed. The system contains a control device that generates commutation control signals which cause spindle motor drivers to source or sink current through windings of a spindle motor. The windings create electromagnetic fields which induce rotational movement in a spindle motor rotor. Low acoustic noise snubber devices are coupled to each winding and are dynamically configurable by the control device to provide low spindle motor driver charging current upon initial application of power to the spindle motor, and reduced acoustic noise and back EMF-generated current and voltage surges at the spindle motor driver during spindle motor commutation.

摘要翻译： 公开了一种用于低声噪声主轴电动机换向的系统。 该系统包含一个产生换向控制信号的控制装置，使得主轴电动机驱动器通过主轴电动机的绕组来产生或吸收电流。 绕组产生在主轴电机转子中引起旋转运动的电磁场。 低噪声缓冲装置耦合到每个绕组，并且可由控制装置动态地配置，以在初始向主轴电机施加电力时提供低主轴电动机驱动器充电电流，并且减少了噪声和反电动势产生的电流和电压浪涌 主轴电机换向时的主轴电机驱动器。

公开(公告)号：US20120011376A1

公开(公告)日：2012-01-12

申请号：US12833900

申请日：2010-07-09

申请人： Yu Nang Zai ,  James Lai Kein Chang ,  Kah Liang Gan ,  Pei Koh Lee ,  Wei Loon NG ,  Lina Wang

发明人： Yu Nang Zai ,  James Lai Kein Chang ,  Kah Liang Gan ,  Pei Koh Lee ,  Wei Loon NG ,  Lina Wang

IPC分类号： G06F1/26 ,  H02J7/00

CPC分类号： G06F1/26 ,  G06F1/263 ,  G06F1/266

摘要： A data bus can supply power from a first power source to a sink device. The data bus is coupled to a second power source. An electrical current from the second power source supplements an electrical current on the data bus if the voltage on the data bus decreases to less than a threshold value.

摘要翻译： 数据总线可以从第一电源向宿设备供电。 数据总线耦合到第二电源。 如果数据总线上的电压降至小于阈值，则来自第二电源的电流补充数据总线上的电流。

公开(公告)号：US07578698B1

公开(公告)日：2009-08-25

申请号：US12111365

申请日：2008-04-29

申请人： Kong Beng Terang Thia ,  Pei Koh Lee ,  Wei Loon Ng ,  Kah Liang Gan

发明人： Kong Beng Terang Thia ,  Pei Koh Lee ,  Wei Loon Ng ,  Kah Liang Gan

IPC分类号： H01R13/60

CPC分类号： H01R13/5804 ,  H01R13/60

摘要： A storage device includes a housing having a cavity formed therein which contains a storage unit. A USB cable is electrically connected between a USB plug located outside of the cavity of the housing and the storage unit located in the cavity. A USB cable stress relief mount includes a first USB cable clamp formed in the housing. A second USB cable clamp is formed in the housing and is opposed to the first USB cable clamp. A third USB cable clamp is formed in the housing. The third USB cable clamp is positioned at an angle with the first and second USB cable clamps. The USB cable extends between, and is secured by, the first, second and third USB cable clamps.

摘要翻译： 存储装置包括具有形成在其中的容纳存储单元的壳体。 USB电缆电连接在位于外壳空腔外部的USB插头和位于空腔中的存储单元之间。 USB电缆应力消除装置包括形成在壳体中的第一USB电缆夹。 在壳体中形成第二个USB电缆夹，并与第一个USB电缆夹相对。 在壳体中形成第三个USB电缆夹。 第三个USB电缆夹与第一个和第二个USB电缆夹形成一定角度。 USB电缆在第一，第二和第三USB电缆夹之间延伸并固定。

公开(公告)号：US06657803B1

公开(公告)日：2003-12-02

申请号：US09717650

申请日：2000-11-21

申请人： Khong Mau Ling ,  Myint Ngwe ,  Kah Liang Gan ,  Lakshmi Anantha Challa ,  Quek Leong Choo

发明人： Khong Mau Ling ,  Myint Ngwe ,  Kah Liang Gan ,  Lakshmi Anantha Challa ,  Quek Leong Choo

IPC分类号： G11B509

CPC分类号： G11B20/10055 ,  G11B20/10009 ,  G11B20/10296 ,  G11B20/18 ,  G11B2020/183

摘要： A method and apparatus are provided for reading from a storage medium to form data values. A signal is generated from a sector on the storage medium and a section of that signal is identified as having a change in amplitude. A gain multiplier is activated to multiply that section of the signal by a gain value. The gain multiplier is deactivated at the end of the section so that the remaining portion of the sector signal is not multiplied by the gain value. This results in a defect adjusted signal that is applied to a detector to detect data values.

摘要翻译： 提供了一种用于从存储介质读取以形成数据值的方法和装置。 从存储介质上的扇区生成信号，并将该信号的一部分识别为具有振幅变化。 激活增益乘数以将该段的该信号乘以增益值。 增益乘法器在该段的末尾被去激活，使得扇区信号的剩余部分不乘以增益值。 这导致被应用于检测器以检测数据值的缺陷调整信号。

公开(公告)号：US06574061B1

公开(公告)日：2003-06-03

申请号：US09610202

申请日：2000-07-03

申请人： Khong Mau Ling ,  Lian Chong Kwek ,  Kwee Teck Say ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

发明人： Khong Mau Ling ,  Lian Chong Kwek ,  Kwee Teck Say ,  Myint Ngwe ,  Kah Liang Gan ,  Beng Wee Quak

IPC分类号： G11B503

CPC分类号： G11B5/012 ,  G11B5/02 ,  G11B5/035 ,  G11B33/14 ,  G11B2005/0018 ,  G11B2005/3996

摘要： A process of run-time temperature compensating bias current to a magnetoresistive read head in which a plurality of temperature ranges are defined with associated bias current values. A hysteresis range of temperatures is defined for each boundary between temperature ranges. A bias current value is selected based on the temperature range of the sensed temperature. The process is repeated. If the sensed temperature is in a different temperature range from that previously identified and the measured temperature is not in a hysteresis range at the boundary with the temperature range previously identified, the selected bias current value is based on the presently identified temperature range. If the sensed temperature is in a hysteresis range at the boundary with the temperature range previously.

摘要翻译： 对磁阻读取头的运行时温度补偿偏置电流的过程，其中多个温度范围被定义为具有相关联的偏置电流值。 为温度范围内的每个边界定义温度的滞后范围。 基于感测温度的温度范围选择偏置电流值。 重复该过程。 如果检测到的温度处于与先前识别的温度不同的温度范围内，并且测量的温度在与先前识别的温度范围的边界处不在滞后范围内，则所选择的偏置电流值基于当前识别的温度范围。 如果检测到的温度在先前与温度范围的边界处于滞后范围。

公开(公告)号：US06570391B2

公开(公告)日：2003-05-27

申请号：US09815687

申请日：2001-03-23

申请人： Bernard Tuang Liang Lim ,  Sheng Jau Wong ,  Myint Ngwe ,  Kah Liang Gan ,  Victor Wengkhin Chew ,  Eng Hock Lim

发明人： Bernard Tuang Liang Lim ,  Sheng Jau Wong ,  Myint Ngwe ,  Kah Liang Gan ,  Victor Wengkhin Chew ,  Eng Hock Lim

IPC分类号： G01R3108

CPC分类号： G11B33/121 ,  G11B25/043 ,  G11B33/10

摘要： A method of manufacturing disc drives. Before a pivot cartridge is assembled into a disc drive, impedance readings of the pivot cartridge are taken, preferably, at more than one rotational position and across a frequency range. The pivot cartridge is accepted for assembly into the disc drive only if its impedance readings compare favorably with readings taken of a good pivot cartridge. Otherwise, the pivot cartridge is rejected and the impedance readings are analyzed to provide identification of the defect in the pivot cartridge. In addition, a system and a storage device readable by a computer system for implementing the method of screening pivot cartridges and identifying causes of defects is provided.

摘要翻译： 一种制造磁盘驱动器的方法。 在枢转墨盒组装到磁盘驱动器中之前，枢轴卡盘的阻抗读数最好在多于一个旋转位置和频率范围内。 仅当磁带驱动器的阻抗读数与良好的枢轴墨盒的读数相比较时才可以将该墨盒用于组装到磁盘驱动器中。 否则，枢轴卡盘被拒绝，并且分析阻抗读数以提供枢轴卡盘中的缺陷的识别。 另外，提供了一种可由计算机系统读取的系统和存储装置，用于实现屏蔽枢轴盒的方法和识别缺陷的原因。

公开(公告)号：US06188540B1

公开(公告)日：2001-02-13

申请号：US09107889

申请日：1998-06-30

申请人： Kah Liang Gan ,  Beng Wee Quak ,  Kok Hoe Chia ,  Chee Wai Lum

发明人： Kah Liang Gan ,  Beng Wee Quak ,  Kok Hoe Chia ,  Chee Wai Lum

IPC分类号： G11B5596

CPC分类号： G11B21/12 ,  G11B5/5547 ,  G11B5/596

摘要： A system, method, and device for moving a plurality of heads in a disk drive is disclosed. The system comprises hard disks, read/write heads for reading from or writing to the hard disks, a voice coil motor for moving the plurality of heads, a voice coil motor driver for energizing the voice coil motor, a voltage clamp device for regulating a voltage across the voice coil motor, and a park voltage source. The voltage clamp device comprises a transistor, a switch, and a resistive divider network. During head parking, a park voltage source activates the voltage clamp device, which clamps the voltage across the voice coil motor to a fixed value, resulting in movement of the voice coil and heads towards a park location with fixed velocity.

摘要翻译： 公开了一种用于移动磁盘驱动器中的多个磁头的系统，方法和装置。 该系统包括硬盘，用于读取或写入硬盘的读/写头，用于移动多个磁头的音圈电机，用于激励音圈电机的音圈电机驱动器，用于调节音圈电机的电压钳装置 音圈电机两端的电压，以及驻波电压源。 电压钳位装置包括晶体管，开关和电阻分压器网络。 在停车期间，公园电压源激活电压钳位装置，其将音圈电动机上的电压钳位到固定值，导致音圈和头部以固定速度朝向公园位置移动。