公开(公告)号：US06261077B1

公开(公告)日：2001-07-17

申请号：US09246416

申请日：1999-02-08

申请人： Raymond J. Bishop ,  Michael A. Everett ,  Arvind Chari ,  Timothy A. Ferris

发明人： Raymond J. Bishop ,  Michael A. Everett ,  Arvind Chari ,  Timothy A. Ferris

IPC分类号： B29C3508

CPC分类号： B29C41/46 ,  B29C64/135 ,  B29C2791/008 ,  B29K2995/0073 ,  B33Y30/00

摘要： A rapid prototyping and manufacturing (e.g. stereolithography) apparatus includes a secondary frame located within a primary frame of the system. The secondary frame defines an enclosure for housing a number of peripheral heat-producing components and peripheral vibration-producing components. The heat generated by these peripheral heat-producing components is substantially isolated in the enclosure and is removed from the primary frame so as not to cause an undesired impact on other components within the main frame. The secondary frame preferably sits directly on the floor or other surface without touching the primary frame, thus substantially avoiding transmittance of vibration from components in the enclosure to the primary frame of the system.

摘要翻译： 快速原型制造（例如立体光刻）装置包括位于系统的主框架内的辅助框架。 辅助框架限定了用于容纳多个周边发热部件和周边振动产生部件的外壳。 由这些外围制热部件产生的热量在外壳中基本隔离，并从主框架上移除，以免对主框架内的其他部件造成不希望的冲击。 辅助框架优选地直接位于地板或其他表面上而不接触主框架，从而基本上避免振动从外壳中的组件到系统的主框架的透射。

公开(公告)号：US08145934B1

公开(公告)日：2012-03-27

申请号：US12534052

申请日：2009-07-31

申请人： Timothy A. Ferris ,  John R. Agness

发明人： Timothy A. Ferris ,  John R. Agness

IPC分类号： G06F1/26 ,  G06F1/14

CPC分类号： G06F1/04

摘要： A soft start sequencer is disclosed for starting a plurality of voltage regulators, the soft start sequencer comprising a first clock for clocking a plurality of soft start circuits, wherein each soft start circuit for ramping a reference signal from a first value to a second value over a ramp time after a delay time. Each soft start circuit comprises a divider operable to divide the first clock by an integer N to generate a second clock, a first counter clocked by the first clock, the first counter operable to time the delay time, and a second counter clocked by the second clock, the second counter operable to time the ramp time after the delay time.

摘要翻译： 公开了一种用于启动多个电压调节器的软启动定序器，软启动定序器包括用于对多个软启动电路进行计时的第一时钟，其中每个软启动电路用于将参考信号从第一值斜坡上升到第二值 延迟时间后的斜坡时间。 每个软启动电路包括一个分频器，可操作以将第一时钟除以整数N以产生第二时钟，由第一时钟计时的第一计数器，可操作以延迟延迟时间的第一计数器和由第二时钟计时的第二计数器 时钟，第二计数器可操作以在延迟时间之后延迟斜坡时间。

公开(公告)号：US08947822B1

公开(公告)日：2015-02-03

申请号：US12478606

申请日：2009-06-04

申请人： Alan P. Rice ,  Timothy A. Ferris

发明人： Alan P. Rice ,  Timothy A. Ferris

IPC分类号： G11B21/02

CPC分类号： G11B5/6011 ,  G11B5/6064

摘要： A disk drive is disclosed comprising a head actuated over a disk, wherein the head comprises a dynamic fly height (DFH) actuator. The disk drive further comprises an electrical heating element, and control circuitry operable to select an operating control signal applied to the DFH actuator by heating the electrical heating element for a first heating time, measuring a rate of temperature change of the electrical heating element, and selecting the operating control signal applied to the DFH actuator in response to the rate of temperature change.

摘要翻译： 公开了一种磁盘驱动器，包括在磁盘上致动的磁头，其中磁头包括动态飞行高度（DFH）致动器。 磁盘驱动器还包括电加热元件，以及控制电路，可操作以通过加热第一加热时间的电加热元件来测量施加到DFH致动器的操作控制信号，测量电加热元件的温度变化率，以及 响应于温度变化率选择施加到DFH致动器的操作控制信号。

公开(公告)号：US08358145B1

公开(公告)日：2013-01-22

申请号：US12488484

申请日：2009-06-19

申请人： Timothy A. Ferris ,  John R. Agness

发明人： Timothy A. Ferris ,  John R. Agness

IPC分类号： G01R31/00

CPC分类号： H01L23/345 ,  G01R31/26 ,  G06F11/24 ,  G11B19/048 ,  G11B19/28 ,  H01L2924/0002 ,  H01L2924/00

摘要： Self-heating integrated circuits are provided. In one embodiment, a self-heating integrated circuit comprises a drive circuit configured to drive a device and a controller configured to selectively operate the drive circuit in a first mode or a second mode. In the first mode, the controller is configured to operate the drive circuit to drive the device and, in the second mode, the controller is configured to operate the drive circuit to heat the integrated circuit to a target temperature.

摘要翻译： 提供自热集成电路。 在一个实施例中，自加热集成电路包括被配置为驱动设备的驱动电路和被配置为以第一模式或第二模式选择性地操作驱动电路的控制器。 在第一模式中，控制器被配置为操作驱动电路以驱动装置，并且在第二模式中，控制器被配置为操作驱动电路以将集成电路加热到目标温度。

公开(公告)号：US08358114B1

公开(公告)日：2013-01-22

申请号：US12431175

申请日：2009-04-28

申请人： Timothy A. Ferris ,  Mingying Gu

发明人： Timothy A. Ferris ,  Mingying Gu

IPC分类号： G05F1/00

CPC分类号： H02M3/1563

摘要： A hysteretic voltage regulator is disclosed comprising an inductor having a first end and a second end, wherein the second end is connected to an output capacitor in shunt with a load. A switch connects the first end of the inductor to a supply voltage when an output voltage across the load falls below a reference voltage, and disconnects the first end of the inductor from the supply voltage when a current flowing through the output capacitor rises above a reference current.

摘要翻译： 公开了一种滞后电压调节器，其包括具有第一端和第二端的电感器，其中第二端连接到与负载分流的输出电容器。 当跨过负载的输出电压下降到参考电压以下时，开关将电感器的第一端连接到电源电压，并且当流过输出电容器的电流上升到参考电压以上时，将电感器的第一端与电源电压断开。 当前。

公开(公告)号：US06493169B1

公开(公告)日：2002-12-10

申请号：US09551925

申请日：2000-04-19

申请人： Timothy A. Ferris ,  Raffi Codilian

发明人： Timothy A. Ferris ,  Raffi Codilian

IPC分类号： G11B1546

CPC分类号： G11B33/08 ,  G11B15/4731

摘要： A disk drive incidentally generates undesirable acoustic noise during an operation mode and includes a spindle motor having windings and a rotor rotatable at an operating spin-rate during the operation mode. A commutation state sequencer includes a sequence of commutation states including a present commutation state and a next commutation state for generating a sequence of control signals. Switching elements are responsive to the sequence of control signals for sequentially applying a voltage across a selected combination of the windings to generate a torque on the rotor in order to maintain the operating spin-rate. A spindle motor control system provides a series of commutation clock pulses having a corresponding series of commutation clock periods to advance the commutation state sequencer from the present commutation state to the next commutation state. At least two of the commutation clock periods each have a systematically introduced variation from a nominal commutation clock period that depends on the operating spin-rate. The systematically introduced variation reduces the acoustic noise in the disk drive.

摘要翻译： 磁盘驱动器在操作模式期间偶然地产生不期望的声音噪声，并且包括具有绕组的主轴电机和在操作模式期间以工作旋转速度旋转的转子。 换向状态定序器包括一系列换向状态，包括当前换向状态和下一个转换状态，用于产生一系列控制信号。 开关元件响应于控制信号的顺序，以顺序地施加电压跨所选择的绕组的组合，以在转子上产生转矩以维持工作转速。 主轴电动机控制系统提供一系列具有相应系列换向时钟周期的换向时钟脉冲，以将换向状态定序器从当前换向状态推进到下一个换向状态。 至少两个换向时钟周期各自具有取决于操作旋转速率的标称换向时钟周期的系统地引入的变化。 系统地引入的变化减少了磁盘驱动器中的声音噪声。

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：US08937404B1

公开(公告)日：2015-01-20

申请号：US13157228

申请日：2011-06-09

申请人： Timothy A. Ferris

发明人： Timothy A. Ferris

IPC分类号： H02J1/10

CPC分类号： H02M3/1584 ,  G11B5/553 ,  H02M2001/008 ,  Y10T307/391 ,  Y10T307/555

摘要： A data storage device (DSD) is disclosed comprising a non-volatile memory (NVM), and control circuitry comprising a first voltage regulator having a first output operable to generate a first current, and a second voltage regulator having a second output operable to generate a second current. When in an independent mode, the first current is operable to supply a first load independent of the second current, and the second current is operable to supply a second load independent of the first current. When in a parallel mode, the second output is coupled to the first output in order to increase the first current supplied to the first load and decrease the second current supplied to the second load.

摘要翻译： 公开了一种包括非易失性存储器（NVM）的数据存储设备（DSD），以及包括具有可操作以产生第一电流的第一输出的第一电压调节器的控制电路，以及具有第二输出的第二电压调节器， 第二个电流。 当处于独立模式时，第一电流可操作以提供独立于第二电流的第一负载，并且第二电流可操作以独立于第一电流提供第二负载。 当处于并联模式时，第二输出耦合到第一输出，以便增加提供给第一负载的第一电流并减小提供给第二负载的第二电流。

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：US07471483B1

公开(公告)日：2008-12-30

申请号：US11857768

申请日：2007-09-19

申请人： Timothy A. Ferris ,  Alain Chahwan

发明人： Timothy A. Ferris ,  Alain Chahwan

IPC分类号： G11B21/02

CPC分类号： G11B5/5565 ,  G11B5/5582

摘要： A disk drive is disclosed comprising a disk, and a head actuated radially over the disk. A first linear acceleration signal is generated representing a first acceleration disturbance, a second linear acceleration signal is generated representing a second acceleration disturbance, and a third linear acceleration signal is generated representing a thermal popping disturbance. The first linear acceleration signal is combined with the third linear acceleration signal to generate a fourth linear acceleration signal representing a combined physical shock disturbance and thermal popping disturbance.

摘要翻译： 公开了一种磁盘驱动器，其包括盘，以及在盘上径向地致动的磁头。 产生表示第一加速度干扰的第一线性加速度信号，产生表示第二加速度干扰的第二线性加速度信号，并且生成表示热弹跳扰动的第三线性加速度信号。 第一线性加速度信号与第三线性加速度信号组合以产生表示组合的物理冲击扰动和热弹跳扰动的第四线性加速度信号。