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    Head-medium contact detection using high frequency heater oscillation
    1.
    发明授权
    Head-medium contact detection using high frequency heater oscillation 有权
    使用高频加热器振荡的头 - 介质接触检测

    公开(公告)号：US09437234B1

    公开(公告)日：2016-09-06

    申请号：US14831314

    申请日：2015-08-20

    Applicant: Seagate Technology LLC

    Inventor： Shi Jung Kim ,  Dong Wook Lee ,  Ju Yong Lee ,  Won Choul Yang

    IPC: G11B5/60 ,  G11B7/1263 ,  G11B20/18 ,  G11B5/31 ,  G11B5/00

    CPC classification number: G11B5/6076 ,  G11B5/3136 ,  G11B5/607 ,  G11B7/1263 ,  G11B20/18 ,  G11B2005/0021

    Abstract: An apparatus comprises a read/write head having a heater, wherein a low- or non-modulation interface is defined between the head and a magnetic recording medium. A microactuator is coupled to the head. A main actuator is coupled to the microactuator and the head. A controller is coupled to the main actuator, the microactuator, and the head. The controller is configured to control movement of the main actuator and the microactuator in response to a position error signal. The controller is further configured to induce an oscillation in the heater at a predetermined frequency. A detector is coupled to the controller. The detector is configured to sense a disturbance in the PES supplied to the microactuator resulting from the induced heater oscillation, and detect contact between the head and the medium using the PES disturbance.

    Abstract translation: 一种装置包括具有加热器的读/写头，其中在头和磁记录介质之间限定低调或非调制接口。 微型致动器耦合到头部。 主致动器联接到微致动器和头部。 控制器耦合到主致动器，微致动器和头。 控制器被配置为响应于位置误差信号来控制主致动器和微致动器的运动。 控制器还被配置为以预定频率诱发加热器中的振荡。 检测器耦合到控制器。 检测器被配置为感测由感应的加热器振荡产生的提供给微致动器的PES中的干扰，并使用PES干扰来检测头部和介质之间的接触。

    Data storage device and system having adaptive brownout detection
    3.
    发明授权
    Data storage device and system having adaptive brownout detection 有权
    具有自适应掉电检测的数据存储设备和系统

    公开(公告)号：US09355674B2

    公开(公告)日：2016-05-31

    申请号：US13946796

    申请日：2013-07-19

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Byung Wook Kim ,  Jeffrey Kwak ,  In Su Lee ,  Jae Myung Pi ,  Dong Wook Lee ,  Dae Keun Ryoo

    IPC: G11B19/04 ,  G11B5/02

    CPC classification number: G11B19/047 ,  G11B5/02

    Abstract: Technologies are described herein for adaptive brownout detection and mitigation in a storage device having rotational storage media. A target position on the rotational storage media for a current write operation is received. A value for a brownout mitigation parameter is determined based on the target position. A brownout condition is then detected on the storage device, and upon detecting the brownout condition, the current write operation is completed before a power-on reset of the storage device.

    Abstract translation: 本文描述了具有旋转存储介质的存储设备中的自适应掉电检测和减轻的技术。 接收用于当前写入操作的旋转存储介质上的目标位置。 基于目标位置确定降雨缓解参数的值。 然后在存储设备上检测到掉电状况，并且在检测到掉电状况时，在存储设备的上电复位之前完成当前写入操作。

    DATA STORAGE DEVICE AND SYSTEM HAVING ADAPTIVE BROWNOUT DETECTION
    4.
    发明申请
    DATA STORAGE DEVICE AND SYSTEM HAVING ADAPTIVE BROWNOUT DETECTION 有权
    数据存储器件和具有自适应欠压检测的系统

    公开(公告)号：US20150025821A1

    公开(公告)日：2015-01-22

    申请号：US13946796

    申请日：2013-07-19

    Applicant: Seagate Technology LLC

    Inventor： Byung Wook Kim ,  Jeffrey Kwak ,  In Su Lee ,  Jae Myung Pi ,  Dong Wook Lee ,  Dae Keun Ryoo

    IPC: G01R21/00

    CPC classification number: G11B19/047 ,  G11B5/02

    Abstract: Technologies are described herein for adaptive brownout detection and mitigation in a storage device having rotational storage media. A target position on the rotational storage media for a current write operation is received. A value for a brownout mitigation parameter is determined based on the target position. A brownout condition is then detected on the storage device, and upon detecting the brownout condition, the current write operation is completed before a power-on reset of the storage device.

    Abstract translation: 本文描述了具有旋转存储介质的存储设备中的自适应掉电检测和减轻的技术。 接收用于当前写入操作的旋转存储介质上的目标位置。 基于目标位置确定降雨缓解参数的值。 然后在存储设备上检测到掉电状况，并且在检测到掉电状况时，在存储设备的上电复位之前完成当前写入操作。

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