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1. 发明授权

US08970977B1 Disk drive logging failure analysis data when performing an emergency unload 有权
标题翻译：执行紧急卸载时的磁盘驱动器记录故障分析数据
公开(公告)号：US08970977B1
公开(公告)日：2015-03-03
申请号：US13631588
申请日：2012-09-28
申请人： Western Digital Technologies, Inc.
发明人： John R. Agness , Mingying Gu
IPC分类号： G11B5/54 , G11B19/28
CPC分类号： G11B5/54 , G11B19/28 , G11B21/12
摘要： A disk drive is disclosed comprising a head actuated over a disk, a spindle motor operable to rotate the disk, and a ramp near an outer periphery of the disk. When an emergency condition is detected, the head is unloaded onto the ramp, and failure analysis data identifying a cause of the emergency condition is logged.
摘要翻译：公开了一种磁盘驱动器，其包括在盘上致动的磁头，可操作以旋转磁盘的主轴电机和在盘的外周附近的斜坡。当检测到紧急情况时，头部被卸载到斜坡上，并记录识别紧急情况的原因的故障分析数据。

2. 发明授权

US09484733B1 Power control module for data storage device 有权
标题翻译：电源控制模块，用于数据存储设备
公开(公告)号：US09484733B1
公开(公告)日：2016-11-01
申请号：US14146555
申请日：2014-01-02
申请人： Western Digital Technologies, Inc.
发明人： Timothy A. Ferris , John R. Agness
IPC分类号： H02H3/087 , H02H3/20 , H02H5/04
CPC分类号： H02H3/087 , H02H3/202 , H02H5/04
摘要： A power control module including first port for receiving supply voltage from host power supply, second port for providing output voltage to power one or more data storage device components, isolation circuit coupled to first and second ports, driver including output coupled to control terminal of isolation circuit, voltage booster including input for receiving supply voltage and output for providing boost voltage to supply terminal of driver, voltage limiter operable to limit boost voltage to a limited boost voltage, and control circuitry coupled to drive input and operable to cause the isolation circuit to be in closed state during normal operating mode by causing the driver to apply limited boost voltage to the control terminal of the isolation circuit, thereby enabling the isolation circuit to provide over-voltage protection to one or more data storage device components by limiting output voltage at second port to less than the limited boost voltage.
摘要翻译：一种功率控制模块，包括用于从主电源接收电源电压的第一端口，用于向一个或多个数据存储设备组件提供输出电压的第二端口，耦合到第一和第二端口的隔离电路的驱动器，包括耦合到控制端的隔离的输出电路，电压升压器，其包括用于接收电源电压的输入和用于向驱动器的电源端提供升压电压的输出，用于将升压电压限制到限制的升压电压的限压器，以及耦合到驱动输入并可操作以使隔离电路在正常操作模式期间处于关闭状态，通过使驱动器对隔离电路的控制端施加有限的升压电压，从而使得隔离电路能够通过限制一个或多个数据存储设备组件的输出电压来向一个或多个数据存储设备组件提供过电压保护第二端口小于有限的升压电压。

3. 发明授权

US09304560B2 Backup power for reducing host current transients 有权
标题翻译：用于减少主机电流瞬变的备用电源
公开(公告)号：US09304560B2
公开(公告)日：2016-04-05
申请号：US13957898
申请日：2013-08-02
申请人： Western Digital Technologies, Inc.
发明人： William K. Laird , John R. Agness , Henry S. Ung , Ryan P. Mayo
IPC分类号： G06F1/00 , G06F1/26
CPC分类号： G06F1/26 , G06F1/263 , G06F1/305 , G06F1/3221 , G06F1/3225 , G11C5/147 , H02J7/345 , H02M2003/1566 , Y02D10/154
摘要： A data storage device (DSD) includes a power supply from a host and a charge storage element. A current transient is detected on the power supply from the host and it is determined whether the current transient exceeds a current threshold. When the current transient exceeds the current threshold, power is drawn from the charge storage element to reduce power drawn from the host.
摘要翻译：数据存储设备（DSD）包括来自主机的电源和电荷存储元件。在来自主机的电源上检测到电流瞬变，并且确定当前瞬变是否超过当前阈值。当电流瞬变超过电流阈值时，从电荷存储元件抽取功率以减少从主机抽取的功率。

4. 发明授权

US08779574B1 Semiconductor die including a current routing line having non-metallic slots 有权
标题翻译：半导体管芯包括具有非金属槽的电流布线线
公开(公告)号：US08779574B1
公开(公告)日：2014-07-15
申请号：US13854898
申请日：2013-04-01
申请人： Western Digital Technologies, Inc.
发明人： John R. Agness , Mingying Gu
IPC分类号： H01L23/52
CPC分类号： H01L23/528 , H01L23/53238 , H01L2224/45147 , H01L2224/48091 , H01L2224/48247 , H01L2924/15724 , H01L2924/15747 , H01L2924/00014
摘要： A semiconductor die that includes a plurality of non-metallic slots that extend through a current routing line is disclosed. The semiconductor die comprises a semiconductor circuit that includes a plurality of semiconductor components and a current trace line that is coupled to a first semiconductor component. Further, the semiconductor die comprises a current routing line that is coupled with the current trace line. The current routing line includes a plurality of non-metallic slots that extend through the current routing line.
摘要翻译：公开了一种包括延伸穿过电流布线线的多个非金属槽的半导体管芯。半导体管芯包括半导体电路，其包括多个半导体部件和耦合到第一半导体部件的电流迹线。此外，半导体管芯包括与电流迹线连接的电流布线线。当前路由线包括延伸穿过当前路由线路的多个非金属时隙。

5. 发明授权

US09823294B1 Negative voltage testing methodology and tester 有权
公开(公告)号：US09823294B1
公开(公告)日：2017-11-21
申请号：US14278957
申请日：2014-05-15
申请人： Western Digital Technologies, Inc.
发明人： Christopher Aiello , Ryan P. Mayo , William K. Laird , John R. Agness
IPC分类号： G01R31/28
CPC分类号： G01R31/2836 , G01R31/3004 , G11C29/021 , G11C29/56
摘要： A negative voltage testing including a monitoring and triggering circuit coupled to a supply voltage rail of a device under test (DUT) and a switching circuit coupled to the monitoring and triggering circuit. The monitoring and triggering circuit is configured to cause the switching circuit to provide a first negative voltage to the supply voltage rail when a supply voltage on the supply voltage rail decays below a predetermined level during a first test of the DUT.

6. 发明授权

US09350278B1 Circuit technique to integrate voice coil motor support elements 有权
标题翻译：集成音圈电机支持元件的电路技术
公开(公告)号：US09350278B1
公开(公告)日：2016-05-24
申请号：US14304718
申请日：2014-06-13
申请人： Western Digital Technologies, Inc.
发明人： Richard A. Schwab , John R. Agness
IPC分类号： G05B5/00 , H02P6/00
CPC分类号： H02P6/006 , H02P25/034
摘要： A current sensing circuit includes: a first controlled device; a first controlled device; a first current mirror configured to cause a first mirror current to flow through a first load device based on a first control signal received by the first controlled device; a second controlled device; a second current mirror configured to cause a second mirror current to flow through a second load device based on a second control signal received by the second controlled device; and an amplifier configured to output a voltage signal based on the first mirror current flowing through the first load device and the second mirror current flowing through the second load device. The first control signal is substantially proportional to a first drive signal applied to a first controlled remote device, and the second control signal is substantially proportional to a second drive signal applied to of a second controlled remote device.
摘要翻译：电流感测电路包括：第一受控装置; 第一受控装置; 第一电流镜，被配置为基于由所述第一受控设备接收的第一控制信号使第一镜像电流流过第一负载设备; 第二受控装置; 第二电流镜，被配置为基于由所述第二受控装置接收的第二控制信号使第二反射镜电流流过第二负载装置; 以及放大器，被配置为基于流过第一负载装置的第一反射镜电流和流过第二负载装置的第二反射镜电流输出电压信号。第一控制信号基本上与施加到第一受控远程设备的第一驱动信号成比例，并且第二控制信号基本上与施加到第二受控远程设备的第二驱动信号成比例。

7. 发明授权

US09275927B1 Self-heating integrated circuit 有权
公开(公告)号：US09275927B1
公开(公告)日：2016-03-01
申请号：US13719883
申请日：2012-12-19
申请人： Western Digital Technologies, Inc.
发明人： Timothy A. Ferris , John R. Agness
IPC分类号： G01R31/304 , H01L23/34 , G01R31/26
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.

8. 发明授权

US09251839B1 Data storage device with overvoltage protection 有权
标题翻译：具有过压保护功能的数据存储设备
公开(公告)号：US09251839B1
公开(公告)日：2016-02-02
申请号：US14040426
申请日：2013-09-27
申请人： Western Digital Technologies, Inc.
发明人： John R. Agness , William K. Laird , Henry S. Ung , Andre Pratama , Ronald G. Gayler
IPC分类号： G11B21/02 , G11B15/46 , G11B19/20
CPC分类号： G11B15/46 , G06F1/26 , G11B19/20 , G11B19/2063 , G11B19/2081
摘要： A data storage device coupled to a host power supply is disclosed and includes a spindle motor and Voice Coil Motor (VCM) circuitry, a power device coupled to the host power supply via a first host supply line and coupled to the spindle motor and VCM circuitry, wherein the power device comprises a first voltage rail, a first isolation circuit, and control circuitry, wherein the power device receives a first supply voltage on the first voltage rail via the first host supply line and provides the first supply voltage to the spindle motor and VCM circuitry via the first isolation circuit, and wherein the control circuitry is operable to monitor the first voltage rail for an overvoltage event and, when the overvoltage event is detected, control the first isolation circuit to disconnect the spindle motor and VCM circuitry from the first voltage rail.
摘要翻译：公开了耦合到主电源的数据存储设备，其包括主轴电机和音圈电机（VCM）电路，电源设备经由第一主电源线耦合到主电源并耦合到主轴电机和VCM电路，其中所述功率器件包括第一电压轨，第一隔离电路和控制电路，其中所述功率器件经由所述第一主电源线在所述第一电压轨上接收第一电源电压，并将所述第一电源电压提供给所述主轴电动机和VCM电路，并且其中所述控制电路可操作以监测所述第一电压轨道的过电压事件，并且当检测到所述过电压事件时，控制所述第一隔离电路以将主轴电机和VCM电路从第一电压轨。

9. 发明授权

US09058834B1 Power architecture for low power modes in storage devices 有权
标题翻译：存储设备中低功耗模式的电源架构
公开(公告)号：US09058834B1
公开(公告)日：2015-06-16
申请号：US14537363
申请日：2014-11-10
申请人： Western Digital Technologies, Inc.
发明人： Timothy A. Ferris , John R. Agness
IPC分类号： G11B15/18 , G11B19/20
CPC分类号： G11B19/2072 , G11B19/2054
摘要： A power control device comprising an always-on-domain (AOD) which includes control logic circuitry for controlling power from a power source, load switches, bias current generators. The power control device also includes, outside of the AOD, functional blocks. The control logic circuitry is configured to receive a signal to go into a lower power state, initiate a shut-down sequence of the load switches and the bias current generators of the AOD, to disable circuitry outside of the AOD, including the functional blocks of the power control device and loads controlled by the power control device, and operate in a low power state to detect a wake-up signal. The shut-down sequence may additionally include sequencing off voltage regulators outside of the AOD and a clock control inside the AOD.
摘要翻译：一种功率控制装置，包括始终在域（AOD），其包括用于控制来自电源的功率的控制逻辑电路，负载开关，偏置电流发生器。功率控制装置还包括在AOD外部的功能块。控制逻辑电路被配置为接收信号进入较低功率状态，启动负载开关和AOD的偏置电流发生器的关断序列，以禁止AOD外的电路，包括AOD的功能块功率控制装置和由功率控制装置控制的负载，并且在低功率状态下操作以检测唤醒信号。关闭序列还可以包括在AOD外部的排序关断电压调节器和AOD内部的时钟控制。

10. 发明授权

US09471072B1 Self-adaptive voltage scaling 有权
标题翻译：自适应电压调节
公开(公告)号：US09471072B1
公开(公告)日：2016-10-18
申请号：US14322438
申请日：2014-07-02
申请人： Western Digital Technologies, Inc.
发明人： William K. Laird , John R. Agness
IPC分类号： H02M3/157 , G05F1/46
CPC分类号： G05F1/462 , H02M3/157 , H02M2001/0019 , H02M2001/0025 , H02M2001/0032 , H02M2003/1566 , Y02B70/16
摘要： A regulator circuit includes: a current detector configured to sense a load current and convert the sensed load current to a DC current sense signal; and an adjustment circuit configured to adjust an output voltage within predetermined upper and lower voltage limits based on the DC current sense signal.
摘要翻译：调节器电路包括：电流检测器，被配置为感测负载电流并将所感测的负载电流转换为直流电流感测信号; 以及调整电路，被配置为基于直流电流感测信号来调节在预定的上限和下限电压范围内的输出电压。

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