知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

20 records (took 0.035 seconds)

    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION
    5.
    发明申请
    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION 审中-公开
    具有多电阻温度传感器的头传感器用于中间间隔和接触检测

    公开(公告)号：US20140355150A1

    公开(公告)日：2014-12-04

    申请号：US14457694

    申请日：2014-08-12

    Applicant: Seagate Technology LLC

    Inventor： Michael Thomas Johnson ,  Dongming Liu ,  Huazhou Lou ,  Declan Macken ,  Timothy William Stoebe ,  James Gary Wessel ,  Xuan Zheng

    IPC: G11B5/60

    CPC classification number: G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

    Abstract: A head transducer, configured to interact with a magnetic recording medium, includes a first sensor having a temperature coefficient of resistance (TCR) and configured to produce a first sensor signal, and a second sensor having a TCR and configured to produce a second sensor signal. One of the first and second sensors is situated at or near a close point of the head transducer in relation to the magnetic recording medium, and the other of the first and second sensors spaced away from the close point. Circuitry is configured to combine the first and second sensor signals and produce a combined sensor signal indicative of one or both of a change in head-medium spacing and head-medium contact. Each of the sensors may have a TCR with the same sign (positive or negative) or each sensor may have a TCR with a different sign.

    Abstract translation: 被配置为与磁记录介质相互作用的头传感器包括具有温度系数电阻（TCR）并被配置为产生第一传感器信号的第一传感器，以及具有TCR并被配置为产生第二传感器信号的第二传感器 。 第一传感器和第二传感器中的一个位于头部换能器相对于磁记录介质的接近点附近，并且第一传感器和第二传感器中的另一个与近端点间隔开。 电路被配置为组合第一和第二传感器信号并产生指示头 - 介质间隔和头 - 介质接触的变化中的一个或两个的组合的传感器信号。 每个传感器可以具有相同符号（正或负）的TCR，或者每个传感器可以具有不同符号的TCR。

    METHOD AND APPARATUS USED FOR DETERMINING FRICTION BETWEEN SLIDER AND ROTATING DATA STORAGE MEDIUM
    6.
    发明申请
    METHOD AND APPARATUS USED FOR DETERMINING FRICTION BETWEEN SLIDER AND ROTATING DATA STORAGE MEDIUM 有权
    用于确定滑块与旋转数据存储介质之间的摩擦的方法和装置

    公开(公告)号：US20140133053A1

    公开(公告)日：2014-05-15

    申请号：US13675798

    申请日：2012-11-13

    Applicant: SEAGATE TECHNOLOGY LLC

    Inventor： Huiwen Liu ,  David Wobbe ,  Xuan Zheng ,  Timothy William Stoebe

    IPC: G11B20/18

    CPC classification number: G11B5/455 ,  G11B5/4806

    Abstract: A flexible member is coupled between an actuator arm and a slider. The flexible member facilitates relative motion in a tangential direction of a rotating medium. The relative motion is detected via a displacement sensor, and a friction between the slider and the rotating medium is determined based on the sensed relative motion.

    Abstract translation: 柔性构件联接在致动器臂和滑块之间。 柔性构件有助于在旋转介质的切线方向上的相对运动。 通过位移传感器检测相对运动，并且基于感测到的相对运动来确定滑块和旋转介质之间的摩擦。

    Transducer head temperature monitoring
    7.
    发明授权
    Transducer head temperature monitoring 有权
    传感器头温度监控

    公开(公告)号：US08937853B2

    公开(公告)日：2015-01-20

    申请号：US14339157

    申请日：2014-07-23

    Applicant: Seagate Technology LLC

    Inventor： Xuan Zheng ,  Timothy William Stoebe ,  Jorge Hanchi ,  Kaizhong Gao

    IPC: G11B11/00 ,  G11B5/60 ,  G11B5/00

    CPC classification number: G11B5/607 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: Changes in the thermal boundary condition near a close point of an ABS to a media indicate proximity of the ABS with the media. Before contact, heat conduction from the ABS is primarily through convective and/or ballistic heat transfer to air between the ABS and the media. After contact, heat flux primarily flows from the ABS to the media through solid-solid conductive contact. Further, a light source within a HAMR transducer head may create additional thermal variations within the transducer head. These thermal variations create temperature variations within the transducer head. Two resistance temperature sensors on the transducer head at varying distances from the close point and/or light source measure these temperature variations. A temperature difference between the two resistance temperature sensors indicates proximity of the close point to the media and/or light output.

    Abstract translation: ABS附近接近介质的热边界条件的变化指示ABS与介质的接近。 在接触之前，ABS的热传导主要是通过ABS和介质之间的空气对流和/或弹道传热。 接触后，热通量主要通过固体导电接触从ABS流动到介质。 此外，HAMR换能器头内的光源可能在换能器头内产生额外的热变化。 这些热变化会导致传感器头内的温度变化。 传感器头上距离近点和/或光源不同距离的两个电阻温度传感器可测量这些温度变化。 两个电阻温度传感器之间的温差指示接近于介质和/或光输出的接近点。

    TRANSDUCER HEAD TEMPERATURE MONITORING
    8.
    发明申请
    TRANSDUCER HEAD TEMPERATURE MONITORING 有权
    传感头温度监测

    公开(公告)号：US20140334275A1

    公开(公告)日：2014-11-13

    申请号：US14339157

    申请日：2014-07-23

    Applicant: Seagate Technology LLC

    Inventor： Xuan Zheng ,  Timothy William Stoebe ,  Jorge Hanchi ,  Kaizhong Gao

    IPC: G11B5/60

    CPC classification number: G11B5/607 ,  G11B5/6076 ,  G11B5/6088 ,  G11B2005/0021

    Abstract: Changes in the thermal boundary condition near a close point of an ABS to a media indicate proximity of the ABS with the media. Before contact, heat conduction from the ABS is primarily through convective and/or ballistic heat transfer to air between the ABS and the media. After contact, heat flux primarily flows from the ABS to the media through solid-solid conductive contact. Further, a light source within a HAMR transducer head may create additional thermal variations within the transducer head. These thermal variations create temperature variations within the transducer head. Two resistance temperature sensors on the transducer head at varying distances from the close point and/or light source measure these temperature variations. A temperature difference between the two resistance temperature sensors indicates proximity of the close point to the media and/or light output.

    Abstract translation: ABS附近接近介质的热边界条件的变化指示ABS与介质的接近。 在接触之前，ABS的热传导主要是通过ABS和介质之间的空气对流和/或弹道传热。 接触后，热通量主要通过固体导电接触从ABS流动到介质。 此外，HAMR换能器头内的光源可能在换能器头内产生额外的热变化。 这些热变化会导致传感器头内的温度变化。 传感器头上距离近点和/或光源不同距离的两个电阻温度传感器可测量这些温度变化。 两个电阻温度传感器之间的温差指示接近于介质和/或光输出的接近点。

    RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIA AND ASPERITY DETECTION
    9.
    发明申请
    RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIA AND ASPERITY DETECTION 审中-公开
    电阻温度传感器和平台检测

    公开(公告)号：US20140268410A1

    公开(公告)日：2014-09-18

    申请号：US14287419

    申请日：2014-05-27

    Applicant: Seagate Technology LLC

    Inventor： Gary Joseph Kunkel ,  Huazhou Lou ,  Declan Macken ,  Timothy William Stoebe

    IPC: G11B20/10

    CPC classification number: G11B5/607 ,  G01K13/00 ,  G11B5/024 ,  G11B5/3133 ,  G11B5/6011 ,  G11B5/6076 ,  G11B7/0948 ,  G11B7/121 ,  G11B20/10 ,  G11B27/36

    Abstract: A temperature sensor of a head transducer measures temperature near or at the close point. The measured temperature varies in response to changes in spacing between the head transducer and a magnetic recording medium. A detector is coupled to the temperature sensor and is configured to detect a change in a DC component of the measured temperature indicative of onset of contact between the head transducer and the medium. Another head transducer configuration includes a sensor having a sensing element with a high temperature coefficient of resistance to interact with asperities of the medium. Electrically conductive leads are connected to the sensing element and have a low temperature coefficient of resistance relative to that of the sensing element, such thermally induced resistance changes in the leads have a negligible effect on a response of the sensing element to contact with the asperities.

    Abstract translation: 头传感器的温度传感器测量靠近或接近的温度。 测量的温度响应于头部换能器和磁记录介质之间的间隔的变化而变化。 检测器耦合到温度传感器并且被配置为检测指示头部换能器和介质之间的接触开始的测量温度的DC分量的变化。 另一个头部传感器配置包括传感器，该传感器具有具有高温度系数的传感元件，以与介质的粗糙度相互作用。 导电引线连接到感测元件并且具有相对于感测元件的电阻的低温度系数，引线中的这种热感应电阻变化对感测元件与凹凸接触的响应具有可忽略的影响。

    Detection System Using Heating Element Temperature Oscillations
    10.
    发明申请
    Detection System Using Heating Element Temperature Oscillations 审中-公开
    使用加热元件温度振荡的检测系统

    公开(公告)号：US20140029402A1

    公开(公告)日：2014-01-30

    申请号：US14016645

    申请日：2013-09-03

    Applicant: Seagate Technology LLC

    Inventor： Xuan Zheng ,  Timothy William Stoebe

    IPC: G11B27/36

    CPC classification number: G11B27/36 ,  B41J2/355 ,  G11B5/607 ,  G11B5/6076

    Abstract: A data storage system includes a recording head and a compensating resistor. The recording head has a heating element. The compensating resistor is in electrical series with the heating element and is external to the recording head. A method includes applying an alternating current at a first angular frequency to a recording head. A voltage drop across the recording head heating element is measured. A component of the voltage drop is extracted. The component has a frequency that is three times the frequency of the first angular frequency.

    Abstract translation: 数据存储系统包括记录头和补偿电阻。 记录头具有加热元件。 补偿电阻器与加热元件电连接并且在记录头的外部。 一种方法包括将第一角频率的交流电应用于记录头。 测量记录头加热元件两端的电压降。 提取电压降的分量。 该分量的频率是第一角频率的三倍。

Patent Agency Ranking