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公开(公告)号：US08098450B2
公开(公告)日：2012-01-17
申请号：US12651161
申请日：2009-12-31
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）。
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公开(公告)号：US20110157740A1
公开(公告)日：2011-06-30
申请号：US12651161
申请日：2009-12-31
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）。
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公开(公告)号：US20100157454A1
公开(公告)日：2010-06-24
申请号：US12343244
申请日：2008-12-23
IPC分类号： G11B20/00
CPC分类号： G11B27/36 , G11B5/6076 , G11B2220/2516
摘要： In a method of head-disk contact detection in a hard disk drive, a Radio Frequency (RF) carrier signal is injected into a slider which is flying above a surface of a disk in a hard disk drive. A modulated version of the RF carrier signal is received from the slider. The modulated version of the RF carrier signal is demodulated to achieve a demodulated signal. A signal spectrum of a range of frequencies in the demodulated signal is monitored for activity indicative of a contact between a head of the slider and the surface of the disk. An occurrence of the contact is determined based upon an occurrence of the activity.
摘要翻译： 在硬盘驱动器中的头盘接触检测的方法中，将射频（RF）载波信号注入到在硬盘驱动器中的盘表面上方飞行的滑块中。 从滑块接收RF载波信号的调制版本。 RF载波信号的调制版本被解调以实现解调信号。 监视解调信号中的频率范围的信号频谱，用于指示滑动头和盘的表面之间的接触的活动。 基于活动的发生来确定联系的发生。
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公开(公告)号：US07830634B2
公开(公告)日：2010-11-09
申请号：US12343244
申请日：2008-12-23
CPC分类号： G11B27/36 , G11B5/6076 , G11B2220/2516
摘要： In a method of head-disk contact detection in a hard disk drive, a Radio Frequency (RF) carrier signal is injected into a slider which is flying above a surface of a disk in a hard disk drive. A modulated version of the RF carrier signal is received from the slider. The modulated version of the RF carrier signal is demodulated to achieve a demodulated signal. A signal spectrum of a range of frequencies in the demodulated signal is monitored for activity indicative of a contact between a head of the slider and the surface of the disk. An occurrence of the contact is determined based upon an occurrence of the activity.
摘要翻译： 在硬盘驱动器中的头盘接触检测的方法中，将射频（RF）载波信号注入到在硬盘驱动器中的盘表面上方飞行的滑块中。 从滑块接收RF载波信号的调制版本。 RF载波信号的调制版本被解调以实现解调信号。 监视解调信号中的频率范围的信号频谱，用于指示滑动头和盘的表面之间的接触的活动。 基于活动的发生来确定联系的发生。
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5.发明授权Method and system for pre-contact detection and active damping of air bearing vibrations in a hard disk drive 有权用于预接触检测和主动阻尼硬盘驱动器中的空气轴承振动的方法和系统公开(公告)号：US07660068B1
公开(公告)日：2010-02-09
申请号：US12212739
申请日：2008-09-18
申请人： Peter M. Baumgart , John T. Contreras , Luiz Franca-Neto , Bernhard E. Knigge , Richard Kroeker , Gurinder P. Singh
发明人： Peter M. Baumgart , John T. Contreras , Luiz Franca-Neto , Bernhard E. Knigge , Richard Kroeker , Gurinder P. Singh
CPC分类号： G11B5/40 , G11B5/6017 , G11B5/6064 , G11B5/607 , G11B5/6076
摘要： In a method of pre-contact detection and active damping of air bearing vibrations in a hard disk drive, a slider is isolated from ground. The slider is then capacitively coupled with a hard disk of the hard disk drive via a thermal fly-height control (TFC) heating element. An alternating current (AC) signal is applied to the slider via the TFC heating element to control the amplitude of the slider.
摘要翻译： 在硬盘驱动器中的预接触检测和空气轴承振动的主动阻尼的方法中，滑块与地面隔离。 然后滑块经由热飞高控制（TFC）加热元件与硬盘驱动器的硬盘电容耦合。 通过TFC加热元件将交流（AC）信号施加到滑块以控制滑块的振幅。
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公开(公告)号：US07719786B1
公开(公告)日：2010-05-18
申请号：US12343039
申请日：2008-12-23
IPC分类号： G11B5/60
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6064
摘要： In a method of actively controlling slider fly height, a modulated radio frequency (RF) carrier signal is received from a slider. The modulated RF carrier signal comprises an amplitude modulated component which is modulated onto the modulated RF carrier signal by vibration of the slider. The amplitude associated with the amplitude modulated component is measured. Thermal fly height control (TFC) voltage generation is controlled by feeding back on the amplitude. A TFC voltage to apply to the slider is generated such that a selected amplitude of the amplitude modulated component is achieved and maintained. The selected amplitude is associated with a particular preselected fly height of the slider above a surface of a disk. The TFC voltage is provided to the slider.
摘要翻译： 在主动控制滑块飞行高度的方法中，从滑块接收调制射频（RF）载波信号。 调制的RF载波信号包括通过滑块的振动被调制到经调制的RF载波信号的幅度调制分量。 测量与幅度调制分量相关联的振幅。 通过反馈振幅来控制热飞跃高度控制（TFC）电压产生。 产生应用于滑块的TFC电压，使得获得和维持调幅分量的选定振幅。 所选择的幅度与盘表面上方的滑块的特定预选飞行高度相关联。 TFC电压被提供给滑块。
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7.发明授权Systems and methods for reducing condensation along a slider air bearing surface in energy assisted magnetic recording 有权用于在能量辅助磁记录中沿滑块空气轴承表面减少冷凝的系统和方法公开(公告)号：US08599653B1
公开(公告)日：2013-12-03
申请号：US13610157
申请日：2012-09-11
IPC分类号： G11B11/00
CPC分类号： G11B5/6082 , G11B5/314 , G11B5/3173 , G11B2005/0021
摘要： Systems and methods for reducing condensation along an air bearing surface of a slider in an energy assisted magnetic recording system are provided. In one embodiment, the invention relates to a slider configured to reduce condensation along an air bearing surface in an energy assisted magnetic recording system, the slider including an air bearing surface (ABS), a write transducer including a portion disposed at the ABS, a hot spot region disposed along the ABS, where the hot spot region includes the portion of the write transducer at the ABS, and a trench surrounding the hot spot region.
摘要翻译： 提供了一种用于在能量辅助磁记录系统中沿着滑块的空气轴承表面减小冷凝的系统和方法。 在一个实施例中，本发明涉及一种被配置为在能量辅助磁记录系统中沿着空气轴承表面减少冷凝的滑块，滑块包括空气轴承表面（ABS），包括设置在ABS处的部分的写换能器， 沿着ABS布置的热点区域，其中热点区域包括ABS处的写入传感器的部分以及围绕热点区域的沟槽。
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公开(公告)号：US08085490B2
公开(公告)日：2011-12-27
申请号：US12646848
申请日：2009-12-23
IPC分类号： G11B21/02
CPC分类号： G11B5/6029
摘要： In fly-height control system, a slider comprises a spin torque oscillator that is configured for generating an RF carrier signal which is out-of-band of a frequency band of read data, write data, and control signals in a hard disk drive.
摘要翻译： 在飞行高度控制系统中，滑块包括自旋扭矩振荡器，其被配置为产生在硬盘驱动器中的读取数据，写入数据和控制信号的频带的带外的RF载波信号。
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9.发明申请INTEGRATING CONTROL OF SLIDER BIAS POTENTIAL, TOUCH-DOWN DETECTION AND FLY-HEIGHT DETERMINATION IN A HDD 有权综合控制滑块偏移潜力，触摸屏检测和飞行高度测量公开(公告)号：US20110157736A1
公开(公告)日：2011-06-30
申请号：US12651259
申请日：2009-12-31
申请人： John CONTRERAS , Bernhard E. Knigge
发明人： John CONTRERAS , Bernhard E. Knigge
CPC分类号： G11B5/6011 , G11B5/6023 , G11B5/607 , G11B5/6076
摘要： A hard disk drive (HDD) including a slider. The slider includes a resistive temperature detector (RTD) configured to detect a temperature generated by one or more of slider spacing and contact with a media of said HDD. HDD also includes a slider signal controller configured to control bias signal of a slider with respect to a media potential, a real-time media-disk fly-height and contact detector configured to detect one or more of temperature generated by real-time media-disk slider spacing and real-time media-disk contact, and a real-time relative fly-height determiner configured to detect real-time relative fly-height of the slider based on analysis of a modulated portion of a high-frequency signal coupled to an element of the slider.
摘要翻译： 包括滑块的硬盘驱动器（HDD）。 滑块包括电阻温度检测器（RTD），其被配置为检测由滑块间隔中的一个或多个产生的温度并与所述HDD的介质接触。 HDD还包括滑块信号控制器，其被配置为控制滑块相对于媒体电位的偏置信号，实时媒体盘飞行高度和接触检测器，被配置为检测由实时媒体产生的温度中的一个或多个温度， 磁盘滑块间隔和实时媒体磁盘接触，以及实时相对飞行高度确定器，其被配置为基于耦合到高频信号的高频信号的调制部分的分析来检测滑块的实时相对飞行高度 滑块的元素。
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10.发明授权公开(公告)号：US07916420B1
公开(公告)日：2011-03-29
申请号：US12780075
申请日：2010-05-14
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6064
摘要： A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks. The disk drive further comprises a fly height actuator operable to adjust a fly height of the head. A fly height measurement (FHM) is generated for the head, and a fly height error (FHE) is generated as a difference between the FHM and a target fly height. A comb filter is used to generate fly height compensation values in response to the FHE, and a fly height control signal is generated in response to the FHE and the fly height compensation values, wherein the fly height control signal is applied to the fly height actuator.
摘要翻译： 公开了一种磁盘驱动器，包括在包括多个轨道的盘上致动的磁头。 磁盘驱动器还包括可操作以调节磁头高度的飞行高度致动器。 为头部产生飞行高度测量（FHM），并且产生飞行高度误差（FHE）作为FHM和目标飞行高度之间的差。 梳状滤波器用于响应于FHE产生飞行高度补偿值，并且响应于FHE和飞行高度补偿值而产生飞行高度控制信号，其中飞行高度控制信号被施加到飞行高度致动器 。
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