Soft start sequencer for starting multiple voltage regulators
    1.
    发明授权
    Soft start sequencer for starting multiple voltage regulators 有权
    用于启动多个稳压器的软启动定序器

    公开(公告)号:US08145934B1

    公开(公告)日:2012-03-27

    申请号:US12534052

    申请日:2009-07-31

    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。

    Rapid prototyping apparatus with enhanced thermal and/or vibrational stability for production of three dimensional objects
    2.
    发明授权
    Rapid prototyping apparatus with enhanced thermal and/or vibrational stability for production of three dimensional objects 有权
    具有增强的热和/或振动稳定性的快速原型设备,用于生产三维物体

    公开(公告)号:US06261077B1

    公开(公告)日:2001-07-17

    申请号:US09246416

    申请日:1999-02-08

    IPC分类号: B29C3508

    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。

    Disk drive adjusting fly height based on air density measured from rate of temperature change
    3.
    发明授权
    Disk drive adjusting fly height based on air density measured from rate of temperature change 有权
    基于空气密度的磁盘驱动器调整飞行高度,根据温度变化率测量

    公开(公告)号:US08947822B1

    公开(公告)日:2015-02-03

    申请号:US12478606

    申请日:2009-06-04

    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。

    Self-heating integrated circuit
    4.
    发明授权
    Self-heating integrated circuit 有权
    自加热集成电路

    公开(公告)号:US08358145B1

    公开(公告)日:2013-01-22

    申请号:US12488484

    申请日:2009-06-19

    IPC分类号: G01R31/00

    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。

    Disk drive charging capacitor using motor supply voltage during power failure
    5.
    发明授权
    Disk drive charging capacitor using motor supply voltage during power failure 有权
    磁盘驱动器充电电容器在电源故障期间使用电机电源电压

    公开(公告)号:US09093105B2

    公开(公告)日:2015-07-28

    申请号:US13316128

    申请日:2011-12-09

    IPC分类号: G11B5/02 G11B19/04

    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。

    Voltage quadrupler comprising a second charging capacitor charged using a first charging capacitor
    6.
    发明授权
    Voltage quadrupler comprising a second charging capacitor charged using a first charging capacitor 有权
    电压倍增器包括使用第一充电电容器充电的第二充电电容器

    公开(公告)号:US08717699B1

    公开(公告)日:2014-05-06

    申请号:US13347562

    申请日:2012-01-10

    申请人: Timothy A. Ferris

    发明人: Timothy A. Ferris

    IPC分类号: G11B5/02

    CPC分类号: H02M3/07 G11B5/02

    摘要: A voltage booster is disclosed comprising an input for receiving an input voltage Vin, a first charging capacitor C1, a second charging capacitor C2, and an output capacitor Cout. The output capacitor Cout is charged to four times Vin by connecting C1 in parallel with Vin to charge C1 to Vin, after charging C1 to Vin, connecting C2 in parallel with Vin plus C1 to charge C2 to twice Vin, after charging C2 to twice Vin, connecting C1 in parallel with Vin to recharge C1 to Vin, and after recharging C1, connecting Cout in parallel with Vin plus C1 plus C2 to charge Cout to four times Vin.

    摘要翻译: 公开了一种升压器,其包括用于接收输入电压Vin,第一充电电容器C1,第二充电电容器C2和输出电容器Cout的输入。 通过将C1与Vin并联连接,将输出电容器Cout充电至Vin,将C1充电至Vin,将C1连接到Vin后,将C2与Vin plus C1并联连接,将C2充电至两倍Vin,将C2充电至两倍Vin 将C1与Vin并联连接以将C1充电至Vin,并且在充电C1之后,将Vin连接到Vin + C1 + C2并将Cout连接到Vin的四倍。

    Continuous digital offset cancellation
    7.
    发明授权
    Continuous digital offset cancellation 有权
    连续数字偏移消除

    公开(公告)号:US08081395B1

    公开(公告)日:2011-12-20

    申请号:US12638858

    申请日:2009-12-15

    申请人: Timothy A. Ferris

    发明人: Timothy A. Ferris

    IPC分类号: G11B5/09 G11B15/18 G11B21/02

    CPC分类号: G11B5/59688 G11B5/59627

    摘要: A disk drive is disclosed comprising a disk, a head for writing data to the disk, and control circuitry coupled to the head, the control circuitry comprising a signal amplifier outputting a first signal comprising an offset voltage, the control circuitry operable to determine a state signal based on comparing the first signal to a reference signal, increase a M-bit digital count value in response to a first state of the state signal, decrease the M-bit digital count value in response to a second state of the state signal, and determine a first analog signal based on N bits of the digital count value, wherein the first analog signal adjusts the offset voltage and M>N.

    摘要翻译: 公开了一种磁盘驱动器,其包括盘,用于将数据写入盘的头和耦合到头的控制电路,所述控制电路包括输出包括偏移电压的第一信号的信号放大器,所述控制电路可操作以确定状态 基于将第一信号与参考信号进行比较的信号,响应于状态信号的第一状态增加M位数字计数值,响应于状态信号的第二状态减小M位数字计数值, 并且基于所述数字计数值的N位确定第一模拟信号,其中所述第一模拟信号调整所述偏移电压并且M> N。

    Disk drive adjusting gain of shock detector relative to resonant frequency amplitude
    8.
    发明授权
    Disk drive adjusting gain of shock detector relative to resonant frequency amplitude 有权
    震动检测器相对于谐振频率振幅的磁盘驱动调节增益

    公开(公告)号:US07852588B1

    公开(公告)日:2010-12-14

    申请号:US12144015

    申请日:2008-06-23

    IPC分类号: G11B19/04

    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。

    Disk drive employing commutation phase modulation and current modulation of a spindle motor
    9.
    发明授权
    Disk drive employing commutation phase modulation and current modulation of a spindle motor 失效
    磁盘驱动器采用换向相位调制和主轴电机的电流调制

    公开(公告)号:US06972539B1

    公开(公告)日:2005-12-06

    申请号:US10427521

    申请日:2003-04-30

    IPC分类号: G05B11/01 G11B19/28

    CPC分类号: G11B19/28 Y10S388/911

    摘要: A disk drive is disclosed comprising a spindle motor comprising a plurality of windings for rotating a disk. The spindle motor is rotated by commutating the windings over a plurality of commutation states, wherein audible noise generated by the disk drive is reduced by phase modulating the commutation interval. Further audible noise reduction is achieved by modulating a current applied to the windings which substantially reduces discontinuities in the torque output of the spindle motor caused by phase modulation of the commutation intervals.

    摘要翻译: 公开了一种磁盘驱动器,其包括主轴电机,其包括用于旋转磁盘的多个绕组。 主轴电动机通过在多个换向状态下换向绕组而旋转,其中由盘驱动器产生的可听噪声通过相位调制换向间隔而减小。 通过调制施加到绕组的电流来实现进一步的可听噪声降低,其基本上减少了由换向间隔的相位调制引起的主轴电动机的扭矩输出中的不连续性。