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25 条记录 (耗时 0.023 秒)

    WRITE HEAD WITH ROTATIONAL WRITE FIELD
    1.
    发明申请
    WRITE HEAD WITH ROTATIONAL WRITE FIELD 审中-公开
    具有旋转写字段的写头

    公开(公告)号：US20120162821A1

    公开(公告)日：2012-06-28

    申请号：US12979208

    申请日：2010-12-27

    申请人： Quan-Chiu Harry Lam ,  Donald G. Allen ,  Yansheng Luo

    发明人： Quan-Chiu Harry Lam ,  Donald G. Allen ,  Yansheng Luo

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278

    摘要： The present disclosure describes various ways to achieve a rotational write field using a single coil. For example, a rotational write field can be achieved with a single coil by using different yoke lengths for different poles of a write element. Also described are ways to achieve a rotational write field with a single coil by varying the resistivity, saturation flux density, or pole width of the different poles of the write element of the present invention. The present disclosure also describes various ways to achieve a rotational write field using varied windings of a single coil.

    摘要翻译： 本公开描述了使用单个线圈来实现旋转写入场的各种方式。 例如，通过对写元件的不同极使用不同的轭长度，可以用单个线圈实现旋转写入场。 还描述了通过改变本发明的写入元件的不同极的电阻率，饱和磁通密度或极宽度来实现具有单个线圈的旋转写入场的方式。 本公开还描述了使用单个线圈的不同绕组实现旋转写入场的各种方式。

    Perpendicular magnetic write head having a novel trailing return pole for reduced wide-area-track-erasure
    5.
    发明授权
    Perpendicular magnetic write head having a novel trailing return pole for reduced wide-area-track-erasure 有权
    垂直磁头写入头具有一个新颖的拖尾返回极，用于缩小广域轨迹擦除

    公开(公告)号：US08068311B2

    公开(公告)日：2011-11-29

    申请号：US12040717

    申请日：2008-02-29

    申请人： Wen-Chien David Hsiao ,  Yansheng Luo ,  Quan-chiu Harry Lam

    发明人： Wen-Chien David Hsiao ,  Yansheng Luo ,  Quan-chiu Harry Lam

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/312

    摘要： A magnetic write head having a magnetic return pole that is configured to prevent wide area track erasure. The magnetic return pole has a throat region with a relatively narrow width and has a inner and outer wing portions formed near the air bearing surface. The inner wing portion has a front edge that is disposed at the air bearing surface, whereas the outer wing portion has a front edge that is recessed from the air bearing surface.

    摘要翻译： 一种具有磁回归极的磁写头，其被配置为防止广泛的磁道擦除。 磁返回杆具有宽度相对较窄的喉部区域，并且在靠近空气支承表面处形成有内翼部分和外翼部分。 内翼部具有设置在空气支承面的前缘，而外翼部具有从空气轴承面凹入的前缘。

    SYSTEM, METHOD AND APPARATUS FOR DIRECT HEAD-DISK CLEARANCE MEASUREMENT BY SLIDER VIBRATION AND FLY HEIGHT CALIBRATION
    7.
    发明申请
    SYSTEM, METHOD AND APPARATUS FOR DIRECT HEAD-DISK CLEARANCE MEASUREMENT BY SLIDER VIBRATION AND FLY HEIGHT CALIBRATION 有权
    用于通过滑块振动和飞行高度校准的直接头盘间隙测量的系统，方法和装置

    公开(公告)号：US20100027152A1

    公开(公告)日：2010-02-04

    申请号：US12184300

    申请日：2008-08-01

    申请人： Shanlin Duan ,  Jizhong He ,  John Stephen Hopkins ,  Yansheng Luo

    发明人： Shanlin Duan ,  Jizhong He ,  John Stephen Hopkins ,  Yansheng Luo

    IPC分类号： G11B21/02

    CPC分类号： G11B5/6005

    摘要： A method models and calibrates the fly height of a slider above the disk for disk drives. The calibration scheme uses the Wallace spacing loss equation and laser doppler velocimetry to predict fly height and detect the actual fly height of the slider. The slider is vibrated at selected resonances, such as by capacitive coupling to the disk, and the fly height is gradually reduced. In one version, contact between the slider and disk may be detected using an arm electronics sensor. The amplitude of mean-to-peak, vibration detection is used as an indication of the actual fly height and to calibrate the modeled fly height.

    摘要翻译： 一种方法建模和校准磁盘驱动器磁盘上方的浮动高度。 校准方案使用华莱士间距损失方程和激光多普勒测速来预测飞行高度并检测滑块的实际飞行高度。 滑块以所选择的谐振振动，例如通过电容耦合到盘，并且飞行高度逐渐减小。 在一个版本中，可以使用臂电子传感器来检测滑块和盘之间的接触。 使用平均峰值振幅检测的幅度作为实际飞行高度的指示，并校准建模的飞行高度。

    Magnetic reader recording characterization at slider or bar level
    8.
    发明申请
    Magnetic reader recording characterization at slider or bar level 失效
    磁性阅读器记录滑块或条形图表示

    公开(公告)号：US20060119354A1

    公开(公告)日：2006-06-08

    申请号：US11004456

    申请日：2004-12-03

    申请人： Xiaodong Che ,  Wenchien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    发明人： Xiaodong Che ,  Wenchien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    IPC分类号： G11B27/36

    CPC分类号： G11B27/36 ,  G11B5/455 ,  G11B2220/2516

    摘要： An apparatus for reader characterization is described. The apparatus includes a rotator for rotating a media. The media can contain a signal having a value for a function of a read/write head being assessed. The rotator is operable in conjunction with said apparatus. The apparatus also includes a proximator for proximalizing the media to the read/write head. The proximator is operable in conjunction with said apparatus. The apparatus further includes a writer operable in conjunction with said assembly. The writer writes the signal upon the media. The signal emits the value of the function. The signal is detectable by a reader of the read/write head. The apparatus additionally includes an interface operable in the apparatus for providing removable orientation of the read/write head in an assessing position. The assessing position enables a reader of the read/write head to detect the signal upon rotation of the signal through the assessing position.

    摘要翻译： 描述用于读取器表征的装置。 该装置包括用于旋转介质的旋转器。 媒体可以包含具有被评估的读/写头的功能的值的信号。 旋转器可与所述装置结合操作。 该装置还包括用于将介质近端连接到读/写头的近摄器。 接近器可与所述装置结合操作。 该装置还包括可与所述组件结合操作的写入器。 作者将信号写入媒体。 该信号发出该功能的值。 信号可由读/写头的读取器检测。 该装置还包括可在该装置中操作的接口，用于在评估位置提供读/写头的可移除取向。 评估位置使得读/写头的读取器能够在通过评估位置旋转信号时检测信号。

    System, method, and apparatus for in-situ stray magnetic field measurement
    9.
    发明申请
    System, method, and apparatus for in-situ stray magnetic field measurement 失效
    用于原位杂散磁场测量的系统，方法和装置

    公开(公告)号：US20060092543A1

    公开(公告)日：2006-05-04

    申请号：US10977678

    申请日：2004-10-29

    申请人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    发明人： Xiaodong Che ,  Wen-Chien Hsiao ,  Yansheng Luo ,  Xiaoyu Sui

    IPC分类号： G11B15/04

    CPC分类号： G11B25/043 ,  G11B33/1493

    摘要： A hard disk drive (HDD) detects and measures external stray magnetic fields with existing HDD components. After detecting a strong external magnetic field, read and write operations of the HDD are suspended, and/or other proper corrective actions are taken to minimize loss of data. To measure the stray magnetic field, the magnetic head reader is used as a field sensor. The resistance of the reader changes in the presence of the field, such as with the preamp in the HDD. The resistance also changes with temperature. If the temperature inside the HDD is measured, the resistance change due to temperature is normalized. Even without being able to measure the HDD temperature, the stray magnetic field can be measured with a top head and a bottom head in the HDD. The temperature sensitivity of the reader is thereby cancelled out.

    摘要翻译： 硬盘驱动器（HDD）用现有的HDD组件来检测和测量外部杂散磁场。 在检测到强大的外部磁场之后，HDD的读取和写入操作被暂停，和/或采取其他适当的纠正措施以最小化数据丢失。 为了测量杂散磁场，磁头阅读器被用作场传感器。 读取器的电阻会在场的存在情况下发生变化，例如使用HDD中的前置放大器。 电阻也随温度而变化。 如果测量HDD内部的温度，则由于温度导致的电阻变化被归一化。 即使不能测量HDD温度，也可以用HDD中的顶部头部和底部头部来测量杂散磁场。 因此读取器的温度敏感度被抵消。

    WRITE HEAD STRUCTURE DESIGNED FOR TEMPERATURE INSENSITIVE WRITING PERFORMANCE
    10.
    发明申请
    WRITE HEAD STRUCTURE DESIGNED FOR TEMPERATURE INSENSITIVE WRITING PERFORMANCE 审中-公开
    写入头结构设计用于温度敏感写作性能

    公开(公告)号：US20140002927A1

    公开(公告)日：2014-01-02

    申请号：US13536880

    申请日：2012-06-28

    申请人： Wen-Chien D. Hsiao ,  Terence T.L. Lam ,  Yansheng Luo ,  Xinjiang Shen

    发明人： Wen-Chien D. Hsiao ,  Terence T.L. Lam ,  Yansheng Luo ,  Xinjiang Shen

    IPC分类号： G11B5/187

    CPC分类号： G11B5/187 ,  G11B5/17 ,  G11B5/3106 ,  G11B5/3123 ,  G11B5/3136

    摘要： A magnetic write head for magnetic data recording that includes a structure having a low coefficient of thermal expansion for controlling thermal expansion of the write head. The structure having a low coefficient of thermal expansion has a shape that substantially conforms to the shape of the write coil, such that both the write coil and the structure having a low coefficient of thermal expansion have a central portion that is located closest to the air bearing surface and outer end portions that bend away from the air bearing surface to form a horseshoe shape.

    摘要翻译： 一种用于磁数据记录的磁写头，其包括具有低热膨胀系数的结构，用于控制写头的热膨胀。 具有低热膨胀系数的结构具有基本上符合写入线圈的形状的形状，使得写入线圈和具有低热膨胀系数的结构都具有位于最靠近空气的中心部分 轴承表面和外端部分，其远离空气轴承表面弯曲以形成马蹄形。