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公开(公告)号：US20140368946A1
公开(公告)日：2014-12-18
申请号：US13919207
申请日：2013-06-17
发明人： Andy Chou , Quan Li , Chee Wee Cheng , Beng Theam Ko , Myint Ngwe
CPC分类号： G11B5/6076 , G11B5/607
摘要： A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT.
摘要翻译： 公开了一种用于检测换能器和记录介质之间的接触事件的方法。 该方法包括相对于记录介质定位换能器，其中换能器包括写入器，读取器，加热器和热响应传感器。 该方法还包括向加热器施加电力以建立换能器的飞行高度; 通过所述热响应传感器提供偏置电流以产生偏置信号; 基于偏置信号测量热响应传感器的均方根（RMS）电压VRMS; 确定阈值电压VT; 并且基于VRMS大于VT，检测换能器和介质之间的接触事件。
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公开(公告)号：US08837076B1
公开(公告)日：2014-09-16
申请号：US13844643
申请日：2013-03-15
发明人： CheeWee Cheng , Subhash Guddati , ShengYuan Lin , Andy Chou , SweeChuan Samuel Gan , Stefan Ionescu , Scott Ryun , Richard Martin , Jesse Speckhard
CPC分类号： G11B5/607 , G11B5/6076
摘要： Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.
摘要翻译： 用于位置检测和控制的装置和方法。 根据一些实施例，换能器邻近记录介质定位。 换能器包括写入元件，读取元件，加热器和热响应传感器。 将功率施加到加热器以建立换能器相对于介质的选定的飞行高度。 响应于从热响应传感器获得的偏置信号中累积的多个脉冲计数来检测换能器和介质之间的接触事件。
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公开(公告)号：US08953275B2
公开(公告)日：2015-02-10
申请号：US13919207
申请日：2013-06-17
发明人： Andy Chou , Quan Li , Chee Wee Cheng , Beng Theam Ko , Myint Ngwe
CPC分类号： G11B5/6076 , G11B5/607
摘要： A method for detecting a contact event between a transducer and a recording medium is disclosed. The method includes positioning a transducer with respect to a recording medium, where the transducer includes a writer, a reader, a heater, and a thermally responsive sensor. The method further includes applying power to the heater to establish a fly height of the transducer; supplying a bias current through the thermally responsive sensor to generate a bias signal; measuring a root mean square (RMS) voltage VRMS of the thermally responsive sensor based on the bias signal; determining a threshold voltage VT; and detecting a contact event between the transducer and the medium based on VRMS being greater than VT.
摘要翻译： 公开了一种用于检测换能器和记录介质之间的接触事件的方法。 该方法包括相对于记录介质定位换能器，其中换能器包括写入器，读取器，加热器和热响应传感器。 该方法还包括向加热器施加电力以建立换能器的飞行高度; 通过所述热响应传感器提供偏置电流以产生偏置信号; 基于偏置信号测量热响应传感器的均方根（RMS）电压VRMS; 确定阈值电压VT; 并且基于VRMS大于VT，检测换能器和介质之间的接触事件。
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公开(公告)号：US20140268406A1
公开(公告)日：2014-09-18
申请号：US13844643
申请日：2013-03-15
发明人： CheeWee Cheng , Subhash Guddati , ShengYuan Lin , Andy Chou , SweeChuan Samuel Gan , Stefan Ionescu , Scott Ryun , Richard Martin , Jesse Speckhard
IPC分类号： G11B5/60
CPC分类号： G11B5/607 , G11B5/6076
摘要： Apparatus and method for positional sensing and control. In accordance with some embodiments, a transducer is positioned adjacent a recording medium. The transducer includes a write element, a read element, a heater and a thermally responsive sensor. Power is applied to the heater to establish a selected fly height of the transducer relative to the medium. A contact event between the transducer and the medium is detected responsive to an accumulated plural count of pulses in a bias signal obtained from the thermally responsive sensor.
摘要翻译： 用于位置检测和控制的装置和方法。 根据一些实施例，换能器邻近记录介质定位。 换能器包括写入元件，读取元件，加热器和热响应传感器。 将功率施加到加热器以建立换能器相对于介质的选定的飞行高度。 响应于从热响应传感器获得的偏置信号中累积的多个脉冲计数来检测换能器和介质之间的接触事件。
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