公开(公告)号：US09093105B2

公开(公告)日：2015-07-28

申请号：US13316128

申请日：2011-12-09

申请人： Timothy A. Ferris ,  Robert P. Ryan

发明人： Timothy A. Ferris ,  Robert P. Ryan

IPC分类号： G11B5/02 ,  G11B19/04

CPC分类号： G11B19/047 ,  G11B5/54 ,  G11B19/20 ,  H02P3/14 ,  H02P25/028

摘要： A disk drive is disclosed comprising a disk, a spindle motor operable to rotate the disk, a head actuated over the disk, an interface operable to receive a host supply voltage, and a capacitor. The host supply voltage is used to charge the capacitor to a capacitor voltage higher than the host supply voltage. During a power failure, the host supply voltage stops charging the capacitor, and a motor supply voltage is generated from the spindle motor. The capacitor voltage is used to operate control circuitry, and when the capacitor voltage decays below the motor supply voltage, the motor supply voltage charges the capacitor.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，可操作以旋转盘的主轴马达，在盘上致动的头，可操作以接收主机电源电压的接口和电容器。 主电源电压用于将电容器充电到高于主机电源电压的电容器电压。 在电源故障期间，主机电源电压停止对电容器充电，并且主轴电机产生电机电源电压。 电容器电压用于操作控制电路，当电容器电压降低到电机电源电压以下时，电机电源电压对电容器充电。

公开(公告)号：US07852588B1

公开(公告)日：2010-12-14

申请号：US12144015

申请日：2008-06-23

申请人： Timothy A. Ferris ,  Robert P. Ryan

发明人： Timothy A. Ferris ,  Robert P. Ryan

IPC分类号： G11B19/04

CPC分类号： G11B19/042 ,  G11B5/5582 ,  G11B5/596 ,  G11B5/59694

摘要： A disk drive is disclosed comprising a disk, a head actuated radially over the disk, and control circuitry including a shock detector. The control circuitry is operable to detect a resonant frequency amplitude (RFA) of the shock detector, adjust the shock detector in response to the RFA, and take protective action in response to the shock detector.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，位于盘上径向驱动的磁头，以及包括冲击检测器的控制电路。 控制电路可操作以检测冲击检测器的谐振频率幅度（RFA），响应于RFA调整冲击检测器，并响应于冲击检测器采取保护作用。

公开(公告)号：US06788483B1

公开(公告)日：2004-09-07

申请号：US09945076

申请日：2001-08-31

申请人： Timothy A. Ferris ,  Robert P. Ryan

发明人： Timothy A. Ferris ,  Robert P. Ryan

IPC分类号： G11B509

CPC分类号： H02M3/156 ,  G11B5/012 ,  G11B5/09

摘要： A disk drive comprising a programmable inverting voltage regulator (PIVR) for generating an inverted voltage supply applied to a preamp is disclosed. The PIVR is programmably configured relative to the disk drive's mode of operation, including a read mode and a write mode.

摘要翻译： 公开了一种包括用于产生施加到前置放大器的反相电压源的可编程反相电压调节器（PIVR）的磁盘驱动器。 PIVR可以相对于磁盘驱动器的操作模式进行可编程配置，包括读取模式和写入模式。

公开(公告)号：US09063714B1

公开(公告)日：2015-06-23

申请号：US12144062

申请日：2008-06-23

申请人： Robert P. Ryan ,  Timothy A. Ferris

发明人： Robert P. Ryan ,  Timothy A. Ferris

IPC分类号： G06F12/00 ,  G06F1/26

CPC分类号： G06F1/26 ,  G06F1/28

摘要： A digital device is disclosed comprising a memory, a microprocessor operable to access the memory, and a voltage regulator for ramping an output voltage supplied to the memory during a startup operation. During the startup operation, control circuitry monitors the output voltage, and when the output voltage remains above a first threshold for a predetermined interval, sets a flag. Thereafter, the voltage regulator is enabled to ramp the output voltage after the predetermined interval.

摘要翻译： 公开了一种数字装置，包括存储器，可操作以访问存储器的微处理器和用于在启动操作期间斜坡提供给存储器的输出电压的电压调节器。 在启动操作期间，控制电路监控输出电压，并且当输出电压保持高于第一阈值达预定间隔时，设置标志。 此后，使电压调节器在预定间隔之后斜坡输出电压。

公开(公告)号：US08767354B1

公开(公告)日：2014-07-01

申请号：US13314475

申请日：2011-12-08

申请人： Timothy A. Ferris ,  John R. Agness ,  Robert P. Ryan

发明人： Timothy A. Ferris ,  John R. Agness ,  Robert P. Ryan

IPC分类号： G11B5/00 ,  G11B33/12

CPC分类号： G11B5/40 ,  G11B5/012 ,  G11B5/54

摘要： A data storage device is disclosed comprising a non-volatile memory and control circuitry comprising an interface operable to receive a supply voltage, and a capacitor. An operating voltage regulator converts the supply voltage into an operating voltage used to operate the non-volatile memory. The supply voltage is used to charge the capacitor to a capacitor voltage higher than the supply voltage, and during a power failure, a backup voltage regulator converts the capacitor voltage into a backup voltage substantially equal to the supply voltage. The operating voltage regulator converts the backup voltage into the operating voltage used to operate the non-volatile memory.

摘要翻译： 公开了一种数据存储装置，其包括非易失性存储器和控制电路，其包括可操作以接收电源电压的接口和电容器。 工作电压调节器将电源电压转换成用于操作非易失性存储器的工作电压。 电源电压用于将电容器充电到高于电源电压的电容器电压，并且在电源故障期间，备用电压调节器将电容器电压转换成基本上等于电源电压的备用电压。 工作电压调节器将备用电压转换成用于操作非易失性存储器的工作电压。

公开(公告)号：US08610391B1

公开(公告)日：2013-12-17

申请号：US13172719

申请日：2011-06-29

申请人： Wenli Yang ,  Philip Tin Yue Ng ,  Ashok K. Desai ,  Robert P. Ryan

发明人： Wenli Yang ,  Philip Tin Yue Ng ,  Ashok K. Desai ,  Robert P. Ryan

IPC分类号： H02K21/00 ,  H02K23/00

CPC分类号： H02P6/22 ,  H02P6/08 ,  H02P6/182

摘要： A disk drive is disclosed comprising a head actuated over a disk, and a spindle motor for rotating the disk, the spindle motor comprising a plurality of windings. During a spin-up operation a sinusoidal driving voltage is applied to each winding of the spindle motor. A back electromotive force (BEMF) voltage generated by at least one of the windings is measured, and a rotation speed of the spindle motor is measured. The sinusoidal driving voltage is adjusted in order to optimize a lead angle relative to the rotation speed, wherein the lead angle represents a degree the sinusoidal driving voltage leads the BEMF voltage.

摘要翻译： 公开了一种磁盘驱动器，包括在盘上驱动的磁头和用于旋转磁盘的主轴电机，主轴电动机包括多个绕组。 在起动操作期间，正弦驱动电压被施加到主轴电动机的每个绕组。 测量由至少一个绕组产生的反电动势（BEMF）电压，并且测量主轴电动机的转速。 调整正弦驱动电压以便相对于转速优化引导角，其中引导角表示正弦驱动电压引导BEMF电压的程度。

公开(公告)号：US07907364B2

公开(公告)日：2011-03-15

申请号：US12201571

申请日：2008-08-29

申请人： William B. Boyle ,  Robert P. Ryan

发明人： William B. Boyle ,  Robert P. Ryan

IPC分类号： G11B19/04 ,  G11B15/08 ,  G11B21/02

CPC分类号： G11B5/09

摘要： A disk drive including a delay circuit to provide a delayed reset signal is disclosed. The disk drive includes a head to perform write and read operations to and from a disk and a disk controller that is coupled to the head to control the write and read operations performed by the head. The disk drive further includes: a power loss detection circuit to detect a power loss and to generate a reset signal in response to the power loss; a reset power line coupled to the disk controller and the power loss detection circuit to provide a non-delayed reset signal to the disk controller; and a delay circuit coupled to the reset power line wherein the delay circuit delays the reset signal to provide a delayed reset signal.

摘要翻译： 公开了一种包括提供延迟复位信号的延迟电路的磁盘驱动器。 磁盘驱动器包括用于对磁盘执行写入和读取操作的磁头以及耦合到磁头的磁盘控制器，以控制由磁头执行的写入和读取操作。 磁盘驱动器还包括：功率损耗检测电路，用于检测功率损耗并响应于功率损耗产生复位信号; 耦合到盘控制器和功率损耗检测电路的复位电源线，以向盘控制器提供未延迟的复位信号; 以及耦合到所述复位电源线的延迟电路，其中所述延迟电路延迟所述复位信号以提供延迟的复位信号。

公开(公告)号：US07158329B1

公开(公告)日：2007-01-02

申请号：US11134917

申请日：2005-05-23

申请人： Robert P. Ryan

发明人： Robert P. Ryan

IPC分类号： G11B15/46 ,  G11B15/48 ,  H02P1/00

CPC分类号： G11B19/20 ,  G11B19/2063 ,  H02P6/24

摘要： A disk drive is disclosed comprising a disk, a head actuated over the disk, and a spindle motor for rotating the disk, the spindle motor comprising a plurality of windings. Disk control circuitry executes a spin-down operation of the spindle motor by estimating an angular position of the spindle motor by applying a voltage to at least one of the windings and evaluating a rise time of current flowing through the winding. The windings are commutated in response to the estimated angular position, and a driving current is applied to the windings to brake the spindle motor.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，在盘上致动的头和用于旋转盘的主轴电机，所述主轴电机包括多个绕组。 磁盘控制电路通过对至少一个绕组施加电压并评估流过绕组的电流的上升时间来估计主轴电动机的角位置来执行主轴电动机的减速操作。 绕组根据估计的角度位置进行换向，并向绕组施加驱动电流以制动主轴电动机。

公开(公告)号：US07113365B1

公开(公告)日：2006-09-26

申请号：US10329127

申请日：2002-12-24

申请人： Robert P. Ryan ,  Alan P. Rice ,  Jon E. Jacoby

发明人： Robert P. Ryan ,  Alan P. Rice ,  Jon E. Jacoby

IPC分类号： G11B19/20

CPC分类号： G11B19/2009 ,  H02K1/146 ,  H02K1/187 ,  H02K1/2786 ,  H02K5/1732 ,  H02K11/01 ,  H02K11/022 ,  H02K21/22

摘要： A disk drive is disclosed comprising a disk, a head actuated over a surface of the disk, and a spindle motor for rotating the disk. The spindle motor comprises a ring-shaped stator having a plurality of stator teeth each wound with a winding. The spindle motor further comprises a hub having a plurality of magnets for interacting with the stator teeth to rotate the hub about the shaft when the windings are energized. A ring-shaped shield is disposed in a vertical gap between the windings and the hub to reduce a voltage coupled from the windings to the surface of the disk.

摘要翻译： 公开了一种磁盘驱动器，包括盘，在盘的表面上致动的头和用于旋转盘的主轴电机。 主轴电动机包括具有多个定子齿的环形定子，每个定子齿缠绕有绕组。 主轴电动机还包括具有多个磁体的轮毂，用于与定子齿相互作用以在绕组被通电时围绕轴旋转轮毂。 环形屏蔽设置在绕组和轮毂之间的垂直间隙中以减小从绕组耦合到盘的表面的电压。

公开(公告)号：US07095579B1

公开(公告)日：2006-08-22

申请号：US11143839

申请日：2005-06-02

申请人： Robert P. Ryan ,  Ashok K. Desai ,  Hemant Melkote ,  Jenghung Chen ,  John R. Agness ,  Terry C. Dawson

发明人： Robert P. Ryan ,  Ashok K. Desai ,  Hemant Melkote ,  Jenghung Chen ,  John R. Agness ,  Terry C. Dawson

IPC分类号： G11B21/02

CPC分类号： G11B21/12

摘要： A disk drive is discloses comprising a disk, a head connected to a distal end of an actuator arm, and a voice coil motor (VCM) for rotating the actuator arm about a pivot in order to actuate the head radially over the disk. If when a power failure occurs the radial location of the head is less than a predetermined distance from the outer diameter of the disk, the VCM is controlled to move the head toward the inner diameter of the disk and stopping the head before it reaches the inner diameter of the disk. The VCM is then controlled to move the head toward the outer diameter of the disk until the actuator arm unloads onto a ramp.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，连接到致动器臂的远端的头部和用于围绕枢轴旋转致动器臂的音圈电动机（VCM），以便在盘上径向驱动头部。 如果当电源故障发生时，磁头的径向位置小于距离磁盘外径的预定距离，则控制VCM使磁头向盘的内径移动并在磁头到达内部之前停止磁头 磁盘的直径。 然后控制VCM以使头朝向盘的外径移动，直到致动器臂卸载到斜坡上。