公开(公告)号：US5796544A

公开(公告)日：1998-08-18

申请号：US752335

申请日：1996-11-19

申请人： David S. McMurtrey

发明人： David S. McMurtrey

IPC分类号： G11B5/596

CPC分类号： G11B5/59605

摘要： Provided is a disk drive with a disk and an actuator assembly on which a communication device is mounted for communication with the disk. Position information read from the disk is processed through a channel that generates an analog position error signal that is then converted to a digital position error signal by a first signal converter. Based on the digital position error signal, a controller determines whether realignment of the communication device with the disk is required. The operation of the first signal converter is only periodically required. When realignment is required, then a digital position control signal is generated by the controller and is then converted to an analog position control signal by a second signal converter, which shares circuitry with the first signal converter. Normally, the second signal converter is operating to realign the communication device. Therefore, the shared circuitry is normally operating as part of the second signal converter. Operation of the shared circuitry between the first signal converter and the second signal converter is switched by a switch controlled by the controller. Based on the analog position control signal, a servo system causes the actuator assembly to reposition the communication device for fine adjustment to maintain proper alignment with the disk.

摘要翻译： 提供了一种具有盘和驱动器组件的盘驱动器，其上安装有用于与盘通信的通信装置。 从磁盘读取的位置信息通过产生模拟位置误差信号的通道进行处理，该信道然后由第一信号转换器转换成数字位置误差信号。 基于数字位置误差信号，控制器确定是否需要与盘通信设备的重新对准。 第一信号转换器的操作只是周期性地需要。 当需要重新对准时，则控制器产生数字位置控制信号，然后由与第一信号转换器共享电路的第二信号转换器转换成模拟位置控制信号。 通常，第二信号转换器正在操作以重新对准通信设备。 因此，共享电路通常作为第二信号转换器的一部分工作。 第一信号转换器和第二信号转换器之间的共享电路的操作由控制器控制的开关切换。 基于模拟位置控制信号，伺服系统使致动器组件重新定位通信装置以进行微调，以保持与盘的适当对准。

公开(公告)号：US4855849A

公开(公告)日：1989-08-08

申请号：US186780

申请日：1988-04-25

申请人： David E. Jones ,  David S. McMurtrey

发明人： David E. Jones ,  David S. McMurtrey

IPC分类号： G11B19/20 ,  G11B25/04 ,  G11B33/12

CPC分类号： G11B33/121 ,  G11B19/2009 ,  G11B25/043

摘要： Disclosed is a system and method for mounting disk drive motors. The motor spindle and the drive shaft are rotatably supported by the disk drive chassis. The drive shaft of the motor extends through the printed circuit board of the disk drive and into a central aperture in the motor stator. Between the motor stator and the printed circuit board is a stator-spacer which positions and aligns the stator. The stator is mechanically mounted and electronically connected to the printed circuit board by means of stator retaining pins. The rotor bell of the motor is coaxially mounted to the drive shaft and inductively disposed about the stator.

摘要翻译： 公开了一种用于安装盘驱动马达的系统和方法。 电机主轴和驱动轴由磁盘驱动器机箱可旋转地支撑。 马达的驱动轴延伸穿过盘驱动器的印刷电路板并进入电机定子的中心孔。 在电动机定子和印刷电路板之间是定子 - 间隔件，其定位和对准定子。 定子通过定子保持销被机械地安装和电连接到印刷电路板。 电动机的转子钟同轴地安装在驱动轴上并感应地围绕定子设置。

公开(公告)号：US06751044B1

公开(公告)日：2004-06-15

申请号：US09430614

申请日：1999-10-29

申请人： Steven W. Meeks ,  Richard D. LeSage ,  David S. McMurtrey ,  Peter R. Svendsen ,  W. Craig Tomalty

发明人： Steven W. Meeks ,  Richard D. LeSage ,  David S. McMurtrey ,  Peter R. Svendsen ,  W. Craig Tomalty

IPC分类号： G11B5596

CPC分类号： G11B5/59683

摘要： A magneto-optical clock head is disclosed. The magneto-optical clock head allows a longitudinally recorded clock track to be read from a disk surface from a position outside of a head-disk assembly (HDA). The clock track has sections of alternating magnetization which define transitions. Importantly, the magneto-optical clock head is used to sense the transitions using the transverse Kerr effect, as opposed to the longitudinal Kerr effect as used in one prior technique. In one embodiment, the magneto-optical clock head includes a light source for generating a p-polarized beam which is aligned in such a manner that it strikes the clock track. A reflected beam is then produced which has an intensity that varies based upon the direction of the magnetization of the sections of alternating magnetization of the clock track due to the transverse Kerr effect. A detector is provided to detect the intensity variations in the reflected beam and to ultimately generate a clock signal which is provided to transducers to allow them to appropriately write servo information onto their respective disk surfaces. A method for optically reading a clock signal stored within a clock track which is written onto a disk surface that is located within a head disk assembly of a disk drive is also provided.

摘要翻译： 公开了一种磁光时钟头。 磁光时钟头允许从头盘组件（HDA）外部的位置从盘表面读取纵向记录的时钟轨道。 时钟轨道具有限定过渡的交变磁化区。 重要的是，磁光时钟磁头用于使用横向克尔效应来感测转变，这与先前技术中使用的纵向克尔效应相反。 在一个实施例中，磁 - 光时钟头包括用于产生以偏振时钟轨迹的方式对准的p偏振光束的光源。 然后产生具有根据横向克尔效应的基于时钟轨道的交变磁化部分的磁化方向的变化的强度的反射光束。 提供检测器以检测反射光束中的强度变化并且最终产生提供给换能器的时钟信号，以允许它们将伺服信息适当地写入其各自的盘表面。 还提供了一种用于光学读取存储在时钟轨道内的时钟信号的方法，该时钟信号被写入位于磁盘驱动器的磁头盘组件内的磁盘表面上。

公开(公告)号：US07483269B1

公开(公告)日：2009-01-27

申请号：US11542607

申请日：2006-10-02

申请人： William M. Marvin, Jr. ,  David S. McMurtrey ,  Richard D. LeSage

发明人： William M. Marvin, Jr. ,  David S. McMurtrey ,  Richard D. LeSage

IPC分类号： G06F1/16

CPC分类号： G06F1/187

摘要： An adapter which allows two or more hard disk drives to conduct self-testing in a single test rack slot is provided. Testing can be individually controlled for the various HDDs in a slot. Peltier cell devices or other cooling or heating devices can be controlled to achieve individualized temperature control for HDDs in the test rack slot.

摘要翻译： 提供允许两个或多个硬盘驱动器在单个测试机架插槽中进行自检的适配器。 可以对插槽中的各种HDD单独控制测试。 可以控制珀耳帖元件或其他冷却或加热装置，以便为测试齿条槽中的HDD实现个性化的温度控制。

公开(公告)号：US5473230A

公开(公告)日：1995-12-05

申请号：US88789

申请日：1993-07-08

申请人： Paul F. Dunn ,  David S. McMurtrey

发明人： Paul F. Dunn ,  David S. McMurtrey

IPC分类号： H02P23/00 ,  H02P3/00

CPC分类号： H02P23/16

摘要： An apparatus and method for torque disturbance precompensation in a disk drive spindle motor includes an amplifier for providing current to the spindle motor in response to an input signal. A velocity detector determines the velocity of the motor, which is then compared to a predetermined velocity to generate an error signal. Compensator elements of the control loop develop an actuating signal from the error signal. The actuating signal is then summed with a torque correction value provided by a look-up table. The torque correction value precompensates the motor by causing the amplifier to provide an additional incremented current to the motor. The additional current corrects the torque disturbance resulting from the movement of the heads across the disk.

摘要翻译： 一种用于磁盘驱动主轴电机中的转矩干扰预补偿的装置和方法，包括：放大器，用于响应于输入信号向主轴电动机提供电流。 速度检测器确定电动机的速度，然后将其与预定速度进行比较以产生误差信号。 控制回路的补偿器元件产生来自误差信号的致动信号。 然后将致动信号与由查找表提供的扭矩校正值相加。 扭矩校正值通过使放大器向电动机提供额外的增加的电流来预补偿电动机。 额外的电流校正了磁头穿过磁盘的运动导致的转矩扰动。