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1.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：US08810952B2
公开(公告)日：2014-08-19
申请号：US13299139
申请日：2011-11-17
申请人： Michael T. Johnson , Dongming Liu , Huazhou Lou , Declan Macken , Timothy W. Stoebe , James G. Wessel , Xuan Zheng
发明人： Michael T. Johnson , Dongming Liu , Huazhou Lou , Declan Macken , Timothy W. Stoebe , James G. Wessel , Xuan Zheng
IPC分类号： G11B21/02
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： 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.
摘要翻译： 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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2.发明申请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：US20120120522A1
公开(公告)日：2012-05-17
申请号：US13299139
申请日：2011-11-17
申请人： Michael T. Johnson , Dongming Liu , Huazhou Lou , Declan Macken , Timothy W. Stoebe , James G. Wessel , Xuan Zheng
发明人： Michael T. Johnson , Dongming Liu , Huazhou Lou , Declan Macken , Timothy W. Stoebe , James G. Wessel , Xuan Zheng
CPC分类号： G11B5/607 , G01K13/00 , G11B5/024 , G11B5/3133 , G11B5/6011 , G11B5/6076 , G11B7/0948 , G11B7/121 , G11B20/10 , G11B27/36
摘要： 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.
摘要翻译： 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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公开(公告)号：US08553350B2
公开(公告)日：2013-10-08
申请号：US13117969
申请日：2011-05-27
申请人： Lin Zhou , Huazhou Lou , Dongming Liu , Vincent Bernard Engelkes
发明人： Lin Zhou , Huazhou Lou , Dongming Liu , Vincent Bernard Engelkes
IPC分类号： G11B21/02
CPC分类号： G11B5/607 , G11B5/6076
摘要： A system that is capable of monitoring tribological data, such as friction, in a data storage device. In accordance with various embodiments, a magnetoresistive head is separated from a rotating data storage media by an air bearing and attached to a slider that is adjusted through deformation controlled by a heating element. A measurement circuit concurrently monitors friction from the head and power applied to the heating element to determine an MR head clearance. The measurement circuit includes at least a phase filter that eliminates off-phase friction from contributing to the determination of the MR head clearance.
摘要翻译： 能够监视数据存储装置中摩擦学的摩擦学数据的系统。 根据各种实施例，磁阻头通过空气轴承与旋转数据存储介质分离，并附接到通过由加热元件控制的变形来调节的滑块。 测量电路同时监测来自头部的摩擦力和施加到加热元件的功率，以确定MR磁头间隙。 该测量电路至少包括一个相位滤波器，该相位滤波器消除非相位摩擦从而有助于确定MR磁头间隙。
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公开(公告)号：US20120300335A1
公开(公告)日：2012-11-29
申请号：US13117969
申请日：2011-05-27
申请人： Lin Zhou , Huazhou Lou , Dongming Liu , Vincent Bernard Engelkes
发明人： Lin Zhou , Huazhou Lou , Dongming Liu , Vincent Bernard Engelkes
IPC分类号： G11B5/02
CPC分类号： G11B5/607 , G11B5/6076
摘要： A system that is capable of monitoring tribological data, such as friction, in a data storage device. In accordance with various embodiments, a magnetoresistive head is separated from a rotating data storage media by an air bearing and attached to a slider that is adjusted through deformation controlled by a heating element. A measurement circuit concurrently monitors friction from the head and power applied to the heating element to determine an MR head clearance. The measurement circuit includes at least a phase filter that eliminates off-phase friction from contributing to the determination of the MR head clearance.
摘要翻译： 能够监视数据存储装置中摩擦学的摩擦学数据的系统。 根据各种实施例，磁阻头通过空气轴承与旋转数据存储介质分离，并附接到通过由加热元件控制的变形来调节的滑块。 测量电路同时监测来自头部的摩擦力和施加到加热元件的功率，以确定MR磁头间隙。 该测量电路至少包括一个相位滤波器，该相位滤波器消除非相位摩擦从而有助于确定MR磁头间隙。
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5.发明授权Using first and second resistive sensor bias levels to detect head-to-disk contact and/or clearance 有权使用第一和第二电阻传感器偏置电平来检测磁头到磁盘的接触和/或间隙公开(公告)号：US09082440B2
公开(公告)日：2015-07-14
申请号：US13555581
申请日：2012-07-23
CPC分类号： G11B5/607 , G11B5/6076
摘要： A bias signal is applied to a resistive thermal sensor located proximate a magnetic media reading surface of a magnetic sensor. The bias signal is modulated between first and second bias levels. First and second resistances of the resistive thermal sensor corresponding to the first and second bias levels are measured. Based a difference between the first and second resistances caused by in increase in thermal conductivity between the magnetic sensor and a medium as the magnetic head gets closer to the medium, at least one of a spacing and a contact between the magnetic sensor and the medium are determined.
摘要翻译： 偏置信号被施加到位于磁传感器的磁性介质读取表面附近的电阻式热传感器。 偏置信号在第一和第二偏置电平之间调制。 测量对应于第一和第二偏置电平的电阻热传感器的第一和第二电阻。 基于随着磁头更靠近介质，磁传感器和介质之间的热传导性的增加而引起的第一和第二电阻之间的差异，磁传感器和介质之间的间隔和接触中的至少一个是 决心。
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6.发明申请USING FIRST AND SECOND RESISTIVE SENSOR BIAS LEVELS TO DETECT HEAD-TO-DISK CONTACT AND/OR CLEARANCE 有权使用第一和第二电阻传感器偏置水平检测头盘接触和/或间隙公开(公告)号：US20140023108A1
公开(公告)日：2014-01-23
申请号：US13555581
申请日：2012-07-23
IPC分类号： G01N25/00
CPC分类号： G11B5/607 , G11B5/6076
摘要： A bias signal is applied to a resistive thermal sensor located proximate a magnetic media reading surface of a magnetic sensor. The bias signal is modulated between first and second bias levels. First and second resistances of the resistive thermal sensor corresponding to the first and second bias levels are measured. Based a difference between the first and second resistances caused by in increase in thermal conductivity between the magnetic sensor and a medium as the magnetic head gets closer to the medium, at least one of a spacing and a contact between the magnetic sensor and the medium are determined.
摘要翻译： 偏置信号被施加到位于磁传感器的磁性介质读取表面附近的电阻式热传感器。 偏置信号在第一和第二偏置电平之间调制。 测量对应于第一和第二偏置电平的电阻热传感器的第一和第二电阻。 基于随着磁头更靠近介质，磁传感器和介质之间的热传导性的增加而引起的第一和第二电阻之间的差异，磁传感器和介质之间的间隔和接触中的至少一个是 决心。
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公开(公告)号：US20120218659A1
公开(公告)日：2012-08-30
申请号：US13036184
申请日：2011-02-28
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6011 , G11B5/607 , G11B5/6076 , G11B27/36 , G11B2220/2516
摘要： A method of detecting a contact between a transducing head and a storage medium is provided. The method applies an input signal, having a select power level and known frequency, to an actuator for actuating the head. An output signal is obtained in response to the input signal. At least one signal component is extracted from the output signal at the same or a harmonic of the same known frequency as the input signal applied to the actuator. Whether the at least one extracted signal component indicates a contact between the head and the medium is determined. The power level of the applied wave pattern is increased incrementally until the extracted signal component indicates a contact between the head and the storage medium.
摘要翻译： 提供了一种检测换能头与存储介质之间的接触的方法。 该方法将具有选择功率电平和已知频率的输入信号施加到用于致动头部的致动器。 响应于输入信号获得输出信号。 以与施加到致动器的输入信号相同的已知频率的相同或谐波从输出信号提取至少一个信号分量。 确定至少一个提取的信号分量是否指示头部和介质之间的接触。 所施加的波形图案的功率电平逐渐增加，直到提取的信号分量表示头部和存储介质之间的接触。
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公开(公告)号：US08730611B2
公开(公告)日：2014-05-20
申请号：US13036184
申请日：2011-02-28
IPC分类号： G11B21/02
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6011 , G11B5/607 , G11B5/6076 , G11B27/36 , G11B2220/2516
摘要： A method of detecting a contact between a transducing head and a storage medium is provided. The method applies an input signal, having a select power level and known frequency, to an actuator for actuating the head. An output signal is obtained in response to the input signal. At least one signal component is extracted from the output signal at the same or a harmonic of the same known frequency as the input signal applied to the actuator. Whether the at least one extracted signal component indicates a contact between the head and the medium is determined. The power level of the applied wave pattern is increased incrementally until the extracted signal component indicates a contact between the head and the storage medium.
摘要翻译： 提供了一种检测换能头与存储介质之间的接触的方法。 该方法将具有选择功率电平和已知频率的输入信号施加到用于致动头部的致动器。 响应于输入信号获得输出信号。 以与施加到致动器的输入信号相同的已知频率的相同或谐波从输出信号提取至少一个信号分量。 确定至少一个提取的信号分量是否指示头部和介质之间的接触。 所施加的波形图案的功率电平逐渐增加，直到提取的信号分量表示头部和存储介质之间的接触。
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9.发明授权Method and apparatus for detecting proximity contact between a transducer and a medium 有权用于检测换能器和介质之间的接近接触的方法和装置公开(公告)号：US09202495B2
公开(公告)日：2015-12-01
申请号：US11799204
申请日：2007-05-01
申请人： Dongming Liu , Lin Zhou , Lance E. Stover
发明人： Dongming Liu , Lin Zhou , Lance E. Stover
CPC分类号： G11B5/58 , G11B5/105 , G11B5/3136 , G11B5/455 , G11B5/556 , G11B5/6064 , G11B5/607
摘要： A method and apparatus are provided for positioning a transducer relative to a track of a data storage medium and inducing lateral modulation of transducer the relative to the track. An element of the transducer is actuated toward the storage medium during the lateral modulation, and atomic interaction is detected between the element and the storage medium because of a change in a response to the lateral modulation of the transducer due to the atomic interaction.
摘要翻译： 提供了一种用于相对于数据存储介质的轨道定位换能器并且相对于轨道引起换能器的横向调制的方法和装置。 在侧向调制期间，换能器的元件朝向存储介质致动，并且由于原子相互作用而对换能器的横向调制的响应的变化，元件和存储介质之间检测到原子相互作用。
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10.发明申请Method and apparatus for detecting proximity contact between a transducer and a medium 有权用于检测换能器和介质之间的接近接触的方法和装置公开(公告)号：US20080273260A1
公开(公告)日：2008-11-06
申请号：US11799204
申请日：2007-05-01
申请人： Dongming Liu , Lin Zhou , Lance E. Stover
发明人： Dongming Liu , Lin Zhou , Lance E. Stover
CPC分类号： G11B5/58 , G11B5/105 , G11B5/3136 , G11B5/455 , G11B5/556 , G11B5/6064 , G11B5/607
摘要： A method and apparatus are provided for positioning a transducer relative to a track of a data storage medium and inducing lateral modulation of transducer the relative to the track. An element of the transducer is actuated toward the storage medium during the lateral modulation, and atomic interaction is detected between the element and the storage medium because of a change in a response to the lateral modulation of the transducer due to the atomic interaction.
摘要翻译： 提供了一种用于相对于数据存储介质的轨道定位换能器并且相对于轨道引起换能器的横向调制的方法和装置。 在侧向调制期间，换能器的元件朝向存储介质致动，并且由于原子相互作用而对换能器的横向调制的响应的变化，元件和存储介质之间检测到原子相互作用。
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