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。

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。

公开(公告)号：US08098450B2

公开(公告)日：2012-01-17

申请号：US12651161

申请日：2009-12-31

申请人： Peter Baumgart ,  Martin Yu-Wen Chen ,  John T. Contreras ,  Sujit Kirpekar ,  Bernhard E. Knigge

发明人： Peter Baumgart ,  Martin Yu-Wen Chen ,  John T. Contreras ,  Sujit Kirpekar ,  Bernhard E. Knigge

IPC分类号： G11B21/02 ,  G11B15/18 ,  G11B5/02

CPC分类号： G11B5/6005 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076

摘要： A hard disk drive (HDD) including a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media. The first RTD is proximate an air bearing surface (ABS) of the slider. The HDD also includes a second RTD configured to detect at least one temperature correlated to a fly-height of the slider. The second RTD is not required to be proximate the ABS of the slider. HDD also includes a read/write integrated circuit (IC) configured to determine the fly-height of the slider based on detection of temperatures by the first RTD and the second RTD.

摘要翻译： 一种硬盘驱动器（HDD），包括被配置为检测由滑块和介质的靠近产生的温度的第一电阻温度检测器（RTD）。 第一个RTD靠近滑块的空气轴承表面（ABS）。 HDD还包括被配置为检测与滑块的飞行高度相关的至少一个温度的第二RTD。 第二个RTD不需要靠近滑块的ABS。 HDD还包括被配置为基于通过第一RTD和第二RTD检测温度来确定滑块的飞行高度的读/写集成电路（IC）。

公开(公告)号：US20110157740A1

公开(公告)日：2011-06-30

申请号：US12651161

申请日：2009-12-31

申请人： Peter BAUMGART ,  Martin Yu-Wen Chen ,  John T. Contreras ,  Sujit Kirpekar ,  Bernhard E. Knigge

发明人： Peter BAUMGART ,  Martin Yu-Wen Chen ,  John T. Contreras ,  Sujit Kirpekar ,  Bernhard E. Knigge

IPC分类号： G11B21/12

CPC分类号： G11B5/6005 ,  G11B5/6064 ,  G11B5/607 ,  G11B5/6076

摘要： A hard disk drive (HDD) including a first resistive temperature detector (RTD) configured to detect a temperature generated by proximity of a slider and a media. The first RTD is proximate an air bearing surface (ABS) of the slider. The HDD also includes a second RTD configured to detect at least one temperature correlated to a fly-height of the slider. The second RTD is not required to be proximate the ABS of the slider. HDD also includes a read/write integrated circuit (IC) configured to determine the fly-height of the slider based on detection of temperatures by the first RTD and the second RTD.

摘要翻译： 一种硬盘驱动器（HDD），包括被配置为检测由滑块和介质的靠近产生的温度的第一电阻温度检测器（RTD）。 第一个RTD靠近滑块的空气轴承表面（ABS）。 HDD还包括被配置为检测与滑块的飞行高度相关的至少一个温度的第二RTD。 第二个RTD不需要靠近滑块的ABS。 HDD还包括被配置为基于通过第一RTD和第二RTD检测温度来确定滑块的飞行高度的读/写集成电路（IC）。