公开(公告)号：US20160275978A1

公开(公告)日：2016-09-22

申请号：US14661522

申请日：2015-03-18

Applicant: Seagate Technology LLC

Inventor： Qun Zang ,  Meherab Amaria ,  Ying Lin ,  Aaron Jacobs ,  Daniel Brown

IPC: G11B5/60 ,  G11B5/41

CPC classification number: G11B5/41 ,  G11B5/6011 ,  G11B5/6029 ,  G11B5/607 ,  G11B5/6076

Abstract: A first adaptive fly height measurement is performed between a read/write head and a recording medium during a stage of qualification testing of a magnetic disk drive. A second adaptive fly height measurement of the read/write head is performed during a subsequent stage of the qualification testing. In response to determining that a fly height decrease between the first and second adaptive fly height measurements is above a threshold value, a mitigation operation is performed to remove a contaminant from a media-facing surface of the read/write head.

Abstract translation: 在磁盘驱动器的认证测试阶段期间，在读/写头和记录介质之间执行第一自适应飞行高度测量。 读/写头的第二自适应飞行高度测量在资格测试的后续阶段执行。 响应于确定第一和第二自适应飞行高度测量之间的飞行高度减小高于阈值，执行缓解操作以从读/写头的面向媒体的表面去除污染物。

公开(公告)号：US09542963B2

公开(公告)日：2017-01-10

申请号：US14661522

申请日：2015-03-18

Applicant: Seagate Technology LLC

Inventor： Qun Zang ,  Meherab Amaria ,  Ying Lin ,  Aaron Jacobs ,  Daniel Brown

IPC: G11B5/41 ,  G11B5/60

CPC classification number: G11B5/41 ,  G11B5/6011 ,  G11B5/6029 ,  G11B5/607 ,  G11B5/6076

Abstract: A first adaptive fly height measurement is performed between a read/write head and a recording medium during a stage of qualification testing of a magnetic disk drive. A second adaptive fly height measurement of the read/write head is performed during a subsequent stage of the qualification testing. In response to determining that a fly height decrease between the first and second adaptive fly height measurements is above a threshold value, a mitigation operation is performed to remove a contaminant from a media-facing surface of the read/write head.

Abstract translation: 在磁盘驱动器的认证测试阶段期间，在读/写头和记录介质之间执行第一自适应飞行高度测量。 读/写头的第二自适应飞行高度测量在资格测试的后续阶段执行。 响应于确定第一和第二自适应飞行高度测量之间的飞行高度减小高于阈值，执行缓解操作以从读/写头的面向媒体的表面去除污染物。

公开(公告)号：US08995080B1

公开(公告)日：2015-03-31

申请号：US14502625

申请日：2014-09-30

Applicant: Seagate Technology LLC

Inventor： James Mou ,  Daniel Brown ,  Robert German

IPC: G11B21/02 ,  G11B5/596

CPC classification number: G11B5/40 ,  G11B5/41 ,  G11B5/455

Abstract: Apparatus and method for non-destructive detection of contamination on a slider in a data storage device. In some embodiments, the slider supports a read element adjacent a rotating data recording medium. A non-repeatable runout (NRRO) component of a position error signal (PES) obtained from readback signals transduced from the read element is extracted. A power spectral density (PSD) analysis of the NRRO component is performed to identify a peak power level, and slider contamination is detected responsive to the peak power level.

Abstract translation: 用于在数据存储装置中的滑块上的污染的非破坏性检测的装置和方法。 在一些实施例中，滑块支持与旋转数据记录介质相邻的读取元件。 提取从从读取元件转换的读回信号获得的位置误差信号（PES）的不可重复跳动（NRRO）分量。 执行NRRO组件的功率谱密度（PSD）分析以识别峰值功率电平，并且响应于峰值功率电平检测滑块污染。