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    DISK DEVICE
    1.
    发明公开
    DISK DEVICE 审中-公开

    公开(公告)号：US20230142495A1

    公开(公告)日：2023-05-11

    申请号：US17892917

    申请日：2022-08-22

    申请人： Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

    发明人： Takeyori HARA

    IPC分类号： G11B5/55

    CPC分类号： G11B5/5582 ,  G11B5/5578 ,  G11B5/5547

    摘要： According to an embodiment, in a disk device, a first actuator moves a first head with respect to a first surface of a first disk. A controller controls positioning of the first head via the first actuator and controls a write operation to the first disk by the first head. The controller acquires information regarding a state of a vibration source, changes a value of a coefficient for estimating a predicted position of the first head according to the information regarding the state of the vibration source, estimates a predicted position of the first head with the value of the coefficient changed, performs a write operation by the first head in a case where the predicted position estimated is equal to or less than a threshold, and prohibits the write operation by the first head in a case where the predicted position estimated exceeds the threshold.

    APPARATUS, SYSTEM, AND METHOD FOR PREVENTING SHOCK-INDUCED HARD DRIVE DAMAGE
    2.
    发明申请
    APPARATUS, SYSTEM, AND METHOD FOR PREVENTING SHOCK-INDUCED HARD DRIVE DAMAGE 审中-公开

    公开(公告)号：US20190198060A1

    公开(公告)日：2019-06-27

    申请号：US15854743

    申请日：2017-12-26

    申请人： Facebook, Inc.

    发明人： Jason David Adrian

    IPC分类号： G11B33/10 ,  G11B5/55

    CPC分类号： G11B33/10 ,  G06F12/0866 ,  G06F2212/1032 ,  G06F2212/21 ,  G06F2212/281 ,  G11B5/5582

    摘要： A shack-sensor apparatus may include a sensor configured to detect a positional state of a hard-drive drawer. The shock-sensor apparatus may also include a mounting component coupled to the sensor and configured to mount the sensor in a location to monitor the positional state of the hard-drive drawer. In addition, the shock-sensor apparatus may include a computing module, electronically coupled to the sensor, that analyzes sensor data provided by the sensor to predict a shock event of the hard-drive drawer and send, in response to predicting the shock event, a signal to at least one hard drive in the hard-drive drawer to prevent damage to the hard drive. Various other apparatuses, systems, and methods are also disclosed.

    Offset reduction for displacement sensor
    6.
    发明授权
    Offset reduction for displacement sensor 有权

    公开(公告)号：US09638508B2

    公开(公告)日：2017-05-02

    申请号：US14163953

    申请日：2014-01-24

    申请人： Seagate Technology LLC

    发明人： Hans Leuthold

    IPC分类号： G01R27/02 ,  G01B7/02 ,  G11B5/55 ,  G11B5/596

    CPC分类号： G01B7/023 ,  G11B5/5582 ,  G11B5/59627 ,  G11B5/59694

    摘要： A device including a displacement measurement circuitry and a charge adjuster circuitry is disclosed. The displacement measurement circuitry may be configured to measure displacement associated with a rotating object. The charge adjuster circuitry is coupled to the displacement measurement circuitry. The charge adjuster circuitry is configured to measure an offset associated with ambient noise in the device over time. The charge adjuster circuitry is further configured to adjust sensors of the displacement measurement circuitry to reduce the measured offset.

    Selecting servo controller based on predicted position error signal spectrum
    9.
    发明授权
    Selecting servo controller based on predicted position error signal spectrum 有权
    基于预测位置误差信号频谱选择伺服控制器

    公开(公告)号：US09460742B1

    公开(公告)日：2016-10-04

    申请号：US14710829

    申请日：2015-05-13

    申请人： Seagate Technology LLC

    发明人： XiMin Shan ,  Xinghui Huang

    IPC分类号： G11B21/02 ,  G11B5/596

    CPC分类号： G11B5/59694 ,  G11B5/5582

    摘要： A discrete Fourier transform (DFT) of a position error signal (PES) of a read/write head controlled by a currently-used controller is determined. A plurality of predicted PES spectra are determined based on the DFT of the PES and a plurality of sensitivity functions associated with a plurality of controllers. One of the plurality of controllers is selected based on respective deviation metrics of the plurality of PES spectra. Servo control of the read/write head changes to use the selected controller.

    摘要翻译： 确定由当前使用的控制器控制的读/写头的位置误差信号（PES）的离散傅里叶变换（DFT）。 基于PES的DFT和与多个控制器相关联的多个灵敏度函数来确定多个预测的PES频谱。 基于多个PES光谱的相应偏差度量来选择多个控制器中的一个。 读/写头的伺服控制更改为使用所选的控制器。

    Data storage device concurrently controlling and sensing a secondary actuator for actuating a head over a disk
    10.
    发明授权
    Data storage device concurrently controlling and sensing a secondary actuator for actuating a head over a disk 有权
    数据存储装置同时控制和感测用于在磁盘上驱动磁头的次致动器

    公开(公告)号：US09437231B1

    公开(公告)日：2016-09-06

    申请号：US14865858

    申请日：2015-09-25

    申请人： Western Digital Technologies, Inc.

    发明人： Timothy A. Ferris ,  Jaesoo Byoun

    IPC分类号： G11B5/55

    CPC分类号： G11B5/5565 ,  G11B5/5526 ,  G11B5/5552 ,  G11B5/5582

    摘要： A data storage device is disclosed comprising a voice coil motor (VCM) and a secondary actuator configured to actuate a head over a disk. A control signal is applied to the secondary actuator while processing a sensor signal generated by the secondary actuator. A vibration signal is generated based on the sensor signal, wherein the vibration signal is a high-pass signal.

    摘要翻译： 公开了一种数据存储装置，其包括音圈电机（VCM）和辅助致动器，其被配置为在盘上致动磁头。 在处理由次级致动器产生的传感器信号时，控制信号被施加到辅助致动器。 基于传感器信号产生振动信号，其中振动信号是高通信号。