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19 条记录 (耗时 0.024 秒)

    MULTIPLE-SENSE THERMO-RESISTIVE SENSOR FOR CONTACT DETECTION OF READ-WRITE HEADS
    1.
    发明申请
    MULTIPLE-SENSE THERMO-RESISTIVE SENSOR FOR CONTACT DETECTION OF READ-WRITE HEADS 有权
    用于接触检测读写头的多感测热电阻传感器

    公开(公告)号：US20130083430A1

    公开(公告)日：2013-04-04

    申请号：US13250204

    申请日：2011-09-30

    申请人： Andrew Chiu ,  Sujit Kirpekar ,  Katalin Pentek ,  Oscar J. Ruiz ,  David J. Seagle

    发明人： Andrew Chiu ,  Sujit Kirpekar ,  Katalin Pentek ,  Oscar J. Ruiz ,  David J. Seagle

    IPC分类号： G11B5/60

    CPC分类号： G11B5/6076 ,  G11B5/607

    摘要： Techniques of the present invention include detecting a touchdown between a read/write head of a disk drive and a surface of a magnetic disk using multiple touchdown sensors located at an air-bearing surface (ABS). The multiple sensors increase the likelihood that a touchdown event—i.e., a portion of the ABS of the head contacting the underlying magnetic disk surface—will be detected. During touchdown, the portion of the head contacting the magnetic disk generates frictional heat which changes a characteristic (e.g., the electrical resistance) of at least one of the sensors located at the ABS. When the sensors are connected to a detection circuit, the changing characteristic may be monitored to identify a touchdown event. The touchdown sensors may be, for example, electrically connected in either series or parallel to the detection circuit. Thus, as long as the electrical resistance of one of the sensors is changed, a touchdown event may be detected.

    摘要翻译： 本发明的技术包括使用位于空气轴承表面（ABS）的多个触地传感器检测磁盘驱动器的读/写磁头与磁盘表面之间的触地。 多个传感器增加触发事件 - 即头部的ABS的一部分接触下面的磁盘表面 - 将被检测的可能性。 触地时，头部与磁盘接触的部分产生摩擦热，该摩擦热改变位于ABS处的至少一个传感器的特性（例如，电阻）。 当传感器连接到检测电路时，可以监视变化特性以识别触地事件。 触地传感器可以例如以串联或并联的方式电连接到检测电路。 因此，只要传感器之一的电阻改变，就可以检测到触地事件。

    Multiple-sense thermo-resistive sensor for contact detection of read-write heads
    2.
    发明授权
    Multiple-sense thermo-resistive sensor for contact detection of read-write heads 有权
    用于读写头接触检测的多感测热电阻传感器

    公开(公告)号：US08854764B2

    公开(公告)日：2014-10-07

    申请号：US13250204

    申请日：2011-09-30

    申请人： Andrew Chiu ,  Sujit Kirpekar ,  Katalin Pentek ,  Oscar J. Ruiz ,  David J. Seagle

    发明人： Andrew Chiu ,  Sujit Kirpekar ,  Katalin Pentek ,  Oscar J. Ruiz ,  David J. Seagle

    IPC分类号： G11B21/02 ,  G11B5/60

    CPC分类号： G11B5/6076 ,  G11B5/607

    摘要： Techniques of the present invention include detecting a touchdown between a read/write head of a disk drive and a surface of a magnetic disk using multiple touchdown sensors located at an air-bearing surface (ABS). The multiple sensors increase the likelihood that a touchdown event—i.e., a portion of the ABS of the head contacting the underlying magnetic disk surface—will be detected. During touchdown, the portion of the head contacting the magnetic disk generates frictional heat which changes a characteristic (e.g., the electrical resistance) of at least one of the sensors located at the ABS. When the sensors are connected to a detection circuit, the changing characteristic may be monitored to identify a touchdown event. The touchdown sensors may be, for example, electrically connected in either series or parallel to the detection circuit. Thus, as long as the electrical resistance of one of the sensors is changed, a touchdown event may be detected.

    摘要翻译： 本发明的技术包括使用位于空气轴承表面（ABS）的多个触地传感器检测磁盘驱动器的读/写磁头与磁盘表面之间的触地。 多个传感器增加触发事件 - 即头部的ABS的一部分接触下面的磁盘表面 - 将被检测的可能性。 触地时，头部与磁盘接触的部分产生摩擦热，该摩擦热改变位于ABS处的至少一个传感器的特性（例如，电阻）。 当传感器连接到检测电路时，可以监视变化特性以识别触地事件。 触地传感器可以例如以串联或并联的方式电连接到检测电路。 因此，只要传感器之一的电阻改变，就可以检测到触地事件。

    Write head design with improved bump to control write saturation
    7.
    发明授权
    Write head design with improved bump to control write saturation 失效
    写头设计具有改进的凸块来控制写入饱和度

    公开(公告)号：US07110217B2

    公开(公告)日：2006-09-19

    申请号：US10687284

    申请日：2003-10-15

    申请人： Edward Hin Pong Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Siyang Zhang

    发明人： Edward Hin Pong Lee ,  Katalin Pentek ,  Yong Shen ,  Sue Siyang Zhang

    IPC分类号： G11B5/147

    CPC分类号： G11B5/60 ,  G11B5/127 ,  G11B5/147

    摘要： A magnetic head having an air bearing surface (ABS) and a first pole tip. A second pole tip is spaced apart from and facing the upper end of the first pole tip across a write gap. A bump extends into a portion of the upper end of the first pole tip and a portion of the bottom end of the second pole tip, the bump being positioned away from the ABS. The bump defines a throat height of the first and second pole tips.

    摘要翻译： 具有空气轴承表面（ABS）和第一极端的磁头。 第二极尖与间隙隔开并面对第一极尖的上端。 凸块延伸到第一极尖端的上端的一部分和第二极尖的底端的一部分，凸块被定位成远离ABS。 凸块限定第一和第二极尖的喉部高度。

    Magnetic write head design for reducing temperature induced protrusion
    9.
    发明申请
    Magnetic write head design for reducing temperature induced protrusion 有权
    磁写头设计用于降低温度引起的突起

    公开(公告)号：US20070247750A1

    公开(公告)日：2007-10-25

    申请号：US11411590

    申请日：2006-04-25

    申请人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    发明人： Wen-Chien Hsiao ,  Yimin Hsu ,  Edward Lee ,  Vladimir Nikitin ,  Katalin Pentek

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/3133 ,  G11B5/3136

    摘要： A magnetic write pole having a structure that prevents thermally induced pole tip protrusion. The write head has a return pole with a magnetic pedestal formed at the air bearing surface (ABS) and a back gap at an end opposite the ABS. An electrically conductive write coil having a plurality of turns passes over the return pole. A fill layer of a material having a low coefficient of thermal expansion, such as alumina is disposed between the coil and the pedestal, and may extend over the top of the coil to the back gap. A photoresist coil insulation layer may be provided between the turns of the coil to insulate the turns of the coil from one another. The photoresist coil insulation layer can also extend to the back gap. A write pole, formed above the return pole and coil is magnetically connected with the back gap layer and return pole by a magnetic shaping layer.

    摘要翻译： 具有防止热感应极尖突出的结构的磁性写入极。 写头具有在空气轴承表面（ABS）形成的磁性基座的返回极和与ABS相对的一端的后部间隙。 具有多个匝的导电写入线圈通过返回极。 具有低热膨胀系数的材料的填充层（例如氧化铝）设置在线圈和基座之间，并且可以在线圈的顶部延伸到后部间隙。 可以在线圈的匝之间设置光致抗蚀剂线圈绝缘层，以将线圈的匝彼此绝缘。 光致抗蚀剂线圈绝缘层也可以延伸到后隙。 在返回极和线圈之上形成的写极通过磁性成形层与后间隙层和返回极磁连接。

    Magnetic imaging microscope test system and its application for characterization of read and write heads for magnetic recording
    10.
    发明授权
    Magnetic imaging microscope test system and its application for characterization of read and write heads for magnetic recording 失效
    磁成像显微镜测试系统及其用于磁记录读写头的表征

    公开(公告)号：US07023204B2

    公开(公告)日：2006-04-04

    申请号：US10298880

    申请日：2002-11-18

    申请人： Vladimir Nikitin ,  Katalin Pentek

    发明人： Vladimir Nikitin ,  Katalin Pentek

    IPC分类号： G01R33/12

    CPC分类号： G01Q60/54 ,  G01Q10/06 ,  G01R33/0385 ,  G11B5/012 ,  G11B5/3103 ,  G11B5/3166 ,  G11B5/3173 ,  G11B5/3193 ,  G11B5/3909 ,  G11B5/455 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0016 ,  G11B2005/3996

    摘要： A novel magnetic imaging microscope test system with high spatial (1–10 nm) and temporal (˜1 ns) resolution of the magnetic field is disclosed, as well as the system application for characterization of read and write heads for magnetic recording. The test system includes a scanner assembly and a work piece holder for holding a work piece to be tested. The scanner assembly and the work piece holder are positionable relative to each other at very fine resolution during scanning. A probe arm is cantilevered from the scanner assembly to bring a probe head into close proximity to the work piece holder. The probe head is configured scan a work piece in contacting engagement therewith so that a magnetic device on the probe head magnetically interacts with a magnetic field generating or magnetic field sensing device on the work piece. A probe head for use in the test system and a related test method are also disclosed.

    摘要翻译： 公开了一种具有高空间（1-10nm）和时间（〜1ns）磁场分辨率的新型磁成像显微镜测试系统，以及用于表征磁记录读写头的系统应用。 测试系统包括扫描器组件和用于保持要测试的工件的工件保持器。 扫描仪组件和工件保持件可以在扫描期间以非常细的分辨率相对于彼此定位。 探头臂从扫描仪组件悬臂，使探针头靠近工件支架。 探针头被配置为扫描与其接触的工件，使得探针头上的磁性装置与工件上的磁场产生或磁场感测装置磁性地相互作用。 还公开了用于测试系统的探头和相关测试方法。