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41.发明授权Signaling method and apparatus for write assist of high coercivity media using integrated half coil 有权使用集成半线圈的高矫顽力介质的写辅助信号方法和装置公开(公告)号：US08638527B2
公开(公告)日：2014-01-28
申请号：US12589042
申请日：2009-10-16
IPC分类号： G11B5/17
CPC分类号： G11B5/02 , G11B5/1278 , G11B5/3123 , G11B5/314 , G11B5/6005 , G11B5/6064 , G11B2005/0005
摘要： A signaling method and apparatus for providing two write assist components for perpendicular thin film heads writing to high coercivity media is disclosed. The two components provided by the present invention include a media writing assist component and a head switching assist component. Circuit wiring configurations and waveforms for driving an auxiliary half coil are disclosed. These include configurations for connecting the auxiliary half coil in parallel with the main data coil, or connecting the auxiliary half coil to the thermal flight control system. Provision for both common mode signals as well as differential mode signals are disclosed. RF sinusoidal waveforms between 1 and 5 GHz have been found suitable for head switching assist functions for either symmetric current feed and common mode current configuration, or asymmetric current feed and differential mode current configuration. RF sinusoidal waveforms between 10 and 50 GHz have been found suitable for media writing assist functions for either asymmetric or symmetric current feed and differential mode configuration. Data derived signals obtained by passing the data pulse train though high pass filtration has been found to provide both head switching assist and media writing assist functionality. Data derived signals can be used with or without the RF signals.
摘要翻译： 公开了一种用于为垂直薄膜头写入高矫顽力介质的两个写入辅助部件的信令方法和装置。 本发明提供的两个部件包括介质写入辅助部件和磁头切换辅助部件。 公开了用于驱动辅助半线圈的电路布线配置和波形。 这些包括用于将辅助半线圈与主数据线圈并联连接或将辅助半线圈连接到热飞行控制系统的配置。 公开了两种共模信号以及差模信号。 已经发现1到5GHz之间的RF正弦波形适用于对称电流馈电和共模电流配置的头部切换辅助功能，或非对称电流馈电和差分模式电流配置。 已经发现10到50GHz之间的RF正弦波形适用于非对称或对称电流馈送和差分模式配置的介质写入辅助功能。 已经发现通过高通滤波通过数据脉冲串获得的数据导出信号提供了头切换辅助和媒体写入辅助功能。 数据导出信号可以使用或不使用RF信号。
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42.发明授权公开(公告)号：US08411390B2
公开(公告)日：2013-04-02
申请号：US12589038
申请日：2009-10-16
CPC分类号： G11B5/1278 , G11B5/315 , G11B5/3153
摘要： A structure for providing two write assist components for perpendicular thin film heads writing to high coercivity media is disclosed. The two components provided by the present invention include a media writing assist component and a head switching assist component. The structure includes an auxiliary half coil surrounding the pole tip at the ABS, and includes conductive elements running parallel to the pole layer which are connected to the auxiliary half coil. Integrated heat sinks located at either the ABS or at a recessed position are provided. The conductive elements can prove either symmetric or asymmetric current feed geometries, which allow differential or common mode current flow to the half coil.
摘要翻译： 公开了一种用于为垂直薄膜头写入高矫顽力介质的两个写入辅助部件的结构。 本发明提供的两个部件包括介质写入辅助部件和磁头切换辅助部件。 该结构包括在ABS处围绕极尖的辅助半线圈，并且包括与辅助半线圈连接的平行于极层延伸的导电元件。 提供位于ABS或凹陷位置的集成散热器。 导电元件可以证明对称或不对称的电流馈送几何形状，这允许差分或共模电流流向半线圈。
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公开(公告)号：US08300360B2
公开(公告)日：2012-10-30
申请号：US12120176
申请日：2008-05-13
IPC分类号： G11B5/147
CPC分类号： G11B5/6005
摘要： A compliant, flexible air bearing slider (ABS) reduces the contact forces between the slider and disk, thereby reducing excessive burnishing and wear and increasing the reliability of the slider. According to an embodiment, an ABS has at least one “compliance-enhancing feature” which reduces the bending mode vibration frequency of the slider. By causing the slider to flex, and bringing the bending mode vibration frequency closer to the pitch 2 eigenmode frequency, coupling of the different vibration modes can be obtained. Thus, the different vibration modes can effectively dampen each other and result in reduced contact forces between the slider and disk.
摘要翻译： 兼容柔性的空气轴承滑块（ABS）可减少滑块和圆盘之间的接触力，从而减少过度抛光和磨损，并提高滑块的可靠性。 根据实施例，ABS具有至少一个柔顺增强特征，其减少滑块的弯曲模式振动频率。 通过使滑块弯曲，并使弯曲模式振动频率更接近于本征模式频率，可以获得不同振动模式的耦合。 因此，不同的振动模式可以有效地相互阻尼并且导致滑块和盘之间的接触力减小。
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公开(公告)号：US20110134557A1
公开(公告)日：2011-06-09
申请号：US12633518
申请日：2009-12-08
IPC分类号： G11B27/36
CPC分类号： G11B19/28 , G11B5/6011 , G11B19/042 , G11B19/043 , G11B19/06 , G11B21/12 , G11B27/36 , G11B2220/2516
摘要： Real time monitoring inconsistent operations in a hard disk drive, wherein the hard disk drive comprises a magnetic disk, a controller and a channel clock. A timing signal from the channel clock is measured in real time in the controller. Time intervals between sector identifier marks of the magnetic disk are detected using the timing signal from the channel clock during reading and writing operations of the hard disk drive in the controller. An inconsistency in the drive operations is detected in the controller based on changes in the time intervals between the sector identifier marks is detected during operation of the hard disk drive. The detection of the inconsistency in the drive operations is responded to.
摘要翻译： 实时监控硬盘驱动器中的不一致操作，其中硬盘驱动器包括磁盘，控制器和通道时钟。 来自通道时钟的定时信号在控制器中实时测量。 在控制器中的硬盘驱动器的读取和写入操作期间，使用来自通道时钟的定时信号来检测磁盘的扇区标识符标记之间的时间间隔。 基于在硬盘驱动器的操作期间检测到的扇区标识符标记之间的时间间隔的变化，在控制器中检测到驱动器操作的不一致。 对驱动器操作不一致的检测作出回应。
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45.发明申请公开(公告)号：US20110090596A1
公开(公告)日：2011-04-21
申请号：US12589038
申请日：2009-10-16
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/315 , G11B5/3153
摘要： A structure for providing two write assist components for perpendicular thin film heads writing to high coercivity media is disclosed. The two components provided by the present invention include a media writing assist component and a head switching assist component. The structure includes an auxiliary half coil surrounding the pole tip at the ABS, and includes conductive elements running parallel to the pole layer which are connected to the auxiliary half coil. Integrated heat sinks located at either the ABS or at a recessed position are provided. The conductive elements can prove either symmetric or asymmetric current feed geometries, which allow differential or common mode current flow to the half coil.
摘要翻译： 公开了一种用于为垂直薄膜头写入高矫顽力介质的两个写入辅助部件的结构。 本发明提供的两个部件包括介质写入辅助部件和磁头切换辅助部件。 该结构包括在ABS处围绕极尖的辅助半线圈，并且包括与辅助半线圈连接的平行于极层延伸的导电元件。 提供位于ABS或凹陷位置的集成散热器。 导电元件可以证明对称或不对称的电流馈送几何形状，这允许差分或共模电流流向半线圈。
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46.发明申请Signaling method and apparatus for write assist of high coercivity media using integrated half coil 有权使用集成半线圈的高矫顽力介质的写辅助信号方法和装置公开(公告)号：US20110090584A1
公开(公告)日：2011-04-21
申请号：US12589042
申请日：2009-10-16
IPC分类号： G11B5/02
CPC分类号： G11B5/02 , G11B5/1278 , G11B5/3123 , G11B5/314 , G11B5/6005 , G11B5/6064 , G11B2005/0005
摘要： A signaling method and apparatus for providing two write assist components for perpendicular thin film heads writing to high coercivity media is disclosed. The two components provided by the present invention include a media writing assist component and a head switching assist component. Circuit wiring configurations and waveforms for driving an auxiliary half coil are disclosed. These include configurations for connecting the auxiliary half coil in parallel with the main data coil, or connecting the auxiliary half coil to the thermal flight control system. Provision for both common mode signals as well as differential mode signals are disclosed. RF sinusoidal waveforms between 1 and 5 GHz have been found suitable for head switching assist functions for either symmetric current feed and common mode current configuration, or asymmetric current feed and differential mode current configuration. RF sinusoidal waveforms between 10 and 50 GHz have been found suitable for media writing assist functions for either asymmetric or symmetric current feed and differential mode configuration. Data derived signals obtained by passing the data pulse train though high pass filtration has been found to provide both head switching assist and media writing assist functionality. Data derived signals can be used with or without the RF signals.
摘要翻译： 公开了一种用于为垂直薄膜头写入高矫顽力介质的两个写入辅助部件的信令方法和装置。 本发明提供的两个部件包括介质写入辅助部件和磁头切换辅助部件。 公开了用于驱动辅助半线圈的电路布线配置和波形。 这些包括用于将辅助半线圈与主数据线圈并联连接或将辅助半线圈连接到热飞行控制系统的配置。 公开了两种共模信号以及差模信号。 已经发现1到5GHz之间的RF正弦波形适用于对称电流馈电和共模电流配置的头部切换辅助功能，或非对称电流馈电和差分模式电流配置。 已经发现10到50GHz之间的RF正弦波形适用于非对称或对称电流馈送和差分模式配置的介质写入辅助功能。 已经发现通过高通滤波通过数据脉冲串获得的数据导出信号提供了头切换辅助和媒体写入辅助功能。 数据导出信号可以使用或不使用RF信号。
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47.发明授权Proximity recording slider with high air bearing damping in and out of contact 有权接近记录滑块，具有高空气轴承阻尼和接触公开(公告)号：US07903375B2
公开(公告)日：2011-03-08
申请号：US11403177
申请日：2006-04-11
IPC分类号： G11B5/60
CPC分类号： G11B5/6005
摘要： An air bearing surface for a head assembly for a data storage device comprises at least one air bearing pad. At least one channel is recessed within the at least one air bearing pad. The at least one channel is formed with an open top and is located entirely within boundaries of the at least one air bearing pad.
摘要翻译： 用于数据存储装置的头组件的空气轴承表面包括至少一个空气轴承垫。 至少一个通道凹入至少一个空气轴承瓦块内。 所述至少一个通道形成有敞开的顶部并且完全位于所述至少一个空气轴承垫的边界内。
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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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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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50.发明申请Magnetic performance of a magnetic transducer operating within a hard disk drive 失效磁性传感器在硬盘驱动器内工作的磁性能公开(公告)号：US20090147404A1
公开(公告)日：2009-06-11
申请号：US12001250
申请日：2007-12-10
申请人： Bernhard E. Knigge , Ullal V. Nayak
发明人： Bernhard E. Knigge , Ullal V. Nayak
IPC分类号： G11B5/60
CPC分类号： G11B5/6064 , G11B5/40 , G11B5/607 , G11B2005/0002
摘要： A method for improving the magnetic performance of at least one magnetic transducer operating within a hard disk drive. The method comprises flying the magnetic transducer at a distance of separation from a magnetic recording media. The magnetic transducer is coupled with a highly damped air bearing surface and a fly height control device. At least one operating parameter of the hard disk drive is measured. The magnetic transducer is moved with the fly height control device into contact with the magnetic recording media, in accordance with at least one operating parameter of the hard disk drive. The magnetic transducer is operated while the magnetic transducer is in contact with the magnetic recording media, thereby improving the magnetic performance of the magnetic transducer.
摘要翻译： 一种用于改善在硬盘驱动器内操作的至少一个磁换能器的磁性能的方法。 该方法包括在与磁记录介质分离的距离处使磁换能器飞行。 磁换能器与高度阻尼的空气轴承表面和飞行高度控制装置相结合。 测量硬盘驱动器的至少一个操作参数。 根据硬盘驱动器的至少一个操作参数，磁传感器与飞行高度控制装置一起移动以与磁记录介质接触。 在磁传感器与磁记录介质接触的同时操作磁换能器，从而提高磁传感器的磁性能。
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