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    Resistance temperature sensors for head-media and asperity detection
    72.
    发明授权
    Resistance temperature sensors for head-media and asperity detection 有权
    电阻温度传感器用于头部介质和粗糙度检测

    公开(公告)号：US09230594B2

    公开(公告)日：2016-01-05

    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: G11B21/02 ,  G11B20/10 ,  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 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。

    WRITER CORE INCORPORATING THERMAL SENSOR HAVING A TEMPERATURE COEFFICIENT OF RESISTANCE
    73.
    发明申请
    WRITER CORE INCORPORATING THERMAL SENSOR HAVING A TEMPERATURE COEFFICIENT OF RESISTANCE 审中-公开
    具有温度系数电阻的热传感器的写入核心

    公开(公告)号：US20150364148A1

    公开(公告)日：2015-12-17

    申请号：US14836010

    申请日：2015-08-26

    Applicant: Seagate Technology LLC

    Inventor： Peng Peng ,  Declan Macken ,  Michael Thomas Johnson ,  Zheying Guo

    IPC: G11B5/60

    CPC classification number: G11B5/6076 ,  G11B5/1278 ,  G11B5/3133 ,  G11B5/3143 ,  G11B5/607

    Abstract: A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. The apparatus also comprises a writer pole between the upper and lower cores, and a writer gap defined between the writer pole and the return shield. The apparatus further comprises a sensor element within one of the upper and lower cores that includes the writer gap. The sensor element has a temperature coefficient of resistance and is configured to sense for a change in temperature indicative of one or both of a change in spacing and contact between the transducer and the magnetic recording medium.

    Abstract translation: 传感器的写入器核心被配置为与磁记录介质相互作用并且包括上芯和下芯。 上芯和下芯中的至少一个包括具有返回屏蔽的返回极。 该装置还包括位于上芯和下芯之间的写极，以及限位在写杆和返挡板之间的写入器间隙。 该装置还包括在包括写入器间隙的上芯和下芯之一内的传感器元件。 传感器元件具有电阻的温度系数，并且被配置为感测指示换能器和磁记录介质之间的间隔和接触的变化中的一个或两个的温度变化。

    Writer core incorporating thermal sensor having a temperature coefficient of resistance
    74.
    发明授权
    Writer core incorporating thermal sensor having a temperature coefficient of resistance 有权
    具有温度系数电阻的热传感器的写入器核心

    公开(公告)号：US09159349B2

    公开(公告)日：2015-10-13

    申请号：US14012480

    申请日：2013-08-28

    Applicant: Seagate Technology LLC

    Inventor： Peng Peng ,  Declan Macken ,  Michael Thomas Johnson ,  Zheying Guo

    IPC: G11B5/60

    CPC classification number: G11B5/6076 ,  G11B5/1278 ,  G11B5/3133 ,  G11B5/3143 ,  G11B5/607

    Abstract: A writer core of a transducer is configured to interact with a magnetic recording medium and comprises an upper core and a lower core. At least one of the upper and lower cores comprises a return pole having a return shield. The apparatus also comprises a writer pole between the upper and lower cores, and a writer gap defined between the writer pole and the return shield. The apparatus further comprises a sensor element within one of the upper and lower cores that includes the writer gap. The sensor element has a temperature coefficient of resistance and is configured to sense for a change in temperature indicative of one or both of a change in spacing and contact between the transducer and the magnetic recording medium.

    Abstract translation: 传感器的写入器核心被配置为与磁记录介质相互作用并且包括上芯和下芯。 上芯和下芯中的至少一个包括具有返回屏蔽的返回极。 该装置还包括位于上芯和下芯之间的写极，以及限位在写杆和返挡板之间的写入器间隙。 该装置还包括在包括写入器间隙的上芯和下芯之一内的传感器元件。 传感器元件具有电阻的温度系数，并且被配置为感测指示换能器和磁记录介质之间的间隔和接触的变化中的一个或两个的温度变化。

    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION
    75.
    发明申请
    HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION 有权
    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：US20150255102A1

    公开(公告)日：2015-09-10

    申请号：US14720299

    申请日：2015-05-22

    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。

    Multi-Sensor Reader with Different Readback Sensitivities
    77.
    发明申请
    Multi-Sensor Reader with Different Readback Sensitivities 有权
    具有不同回读灵敏度的多传感器读取器

    公开(公告)号：US20150255092A1

    公开(公告)日：2015-09-10

    申请号：US14201358

    申请日：2014-03-07

    Applicant: Seagate Technology LLC

    Inventor： Declan Macken ,  Jason Gadbois ,  Eric W. Singleton ,  John M. Wolf

    IPC: G11B5/39

    CPC classification number: G11B5/3951 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3932 ,  G11B5/3948 ,  G11B5/3958 ,  G11B2005/3996

    Abstract: Apparatus for sensing data from a magnetic recording medium using a multi-sensor reader with different readback sensitivities. In accordance with some embodiments, a data transducing head has first and second read sensors. The first read sensor is optimized for reading data and the second read sensor is optimized to detect thermal asperity (TA) events.

    Abstract translation: 用于使用具有不同回读敏感度的多传感器读取器来感测来自磁记录介质的数据的装置。 根据一些实施例，数据传感头具有第一和第二读取传感器。 第一个读取传感器被优化用于读取数据，第二个读取传感器被优化以检测热不均匀性（TA）事件。

    Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection
    79.
    发明授权
    Head transducer with multiple resistance temperature sensors for head-medium spacing and contact detection 有权
    头传感器，具有多个电阻温度传感器，用于头中间距和接触检测

    公开(公告)号：US09036290B2

    公开(公告)日：2015-05-19

    申请号：US14457678

    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: G11B21/02 ,  G11B20/10 ,  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。

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