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1. 发明授权

US08085490B2 Slider fly-height control in a hard disk drive 有权
标题翻译：滑块飞行高度控制在硬盘驱动器
公开(公告)号：US08085490B2
公开(公告)日：2011-12-27
申请号：US12646848
申请日：2009-12-23
申请人： Luiz M. Franca-Neto , Bernhard E. Knigge , Stefan Maat
发明人： Luiz M. Franca-Neto , Bernhard E. Knigge , Stefan Maat
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。

2. 发明申请

US20110149428A1 SLIDER FLY-HEIGHT CONTROL IN A HARD DISK DRIVE 有权
标题翻译：硬盘驱动器中的滑块飞行高度控制
公开(公告)号：US20110149428A1
公开(公告)日：2011-06-23
申请号：US12646848
申请日：2009-12-23
申请人： Luiz M. FRANCA-NETO , Bernhard E. Knigge , Stefan Maat
发明人： Luiz M. FRANCA-NETO , Bernhard E. Knigge , Stefan Maat
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。

3. 发明申请

US20100157454A1 HEAD-DISK CONTACT DETECTION AND WORK FUNCTION DIFFERENCE DETERMINATION 有权
标题翻译：头盘接触检测和工作功能差异测定
公开(公告)号：US20100157454A1
公开(公告)日：2010-06-24
申请号：US12343244
申请日：2008-12-23
申请人： Martin Yu-Wen CHEN , John Contreras , Luiz M. Franca-Neto , Bernhard E. Knigge
发明人： Martin Yu-Wen CHEN , John Contreras , Luiz M. Franca-Neto , Bernhard E. Knigge
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。

4. 发明授权

US08638527B2 Signaling method and apparatus for write assist of high coercivity media using integrated half coil 有权
标题翻译：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
申请人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
发明人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
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。

5. 发明授权

US08411390B2 Integrated half coil structure for write assist of high coercivity media 有权
标题翻译：集成半线圈结构，用于高矫顽力介质的写入辅助
公开(公告)号：US08411390B2
公开(公告)日：2013-04-02
申请号：US12589038
申请日：2009-10-16
申请人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
发明人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
IPC分类号： G11B5/17 , G11B5/187
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。

6. 发明申请

US20110090596A1 Integrated half coil structure for write assist of high coercivity media 有权
标题翻译：集成半线圈结构，用于高矫顽力介质的写入辅助
公开(公告)号：US20110090596A1
公开(公告)日：2011-04-21
申请号：US12589038
申请日：2009-10-16
申请人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
发明人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
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。

7. 发明申请

US20110090584A1 Signaling method and apparatus for write assist of high coercivity media using integrated half coil 有权
标题翻译：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
申请人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
发明人： Luiz M. Franca-Neto , Bernhard E. Knigge , Petrus Antonius Van Der Heijden
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。

8. 发明授权

US07830634B2 Head-disk contact detection and work function difference determination 有权
标题翻译：头盘接触检测和功能差异确定
公开(公告)号：US07830634B2
公开(公告)日：2010-11-09
申请号：US12343244
申请日：2008-12-23
申请人： Martin Yu-Wen Chen , John Contreras , Luiz M. Franca-Neto , Bernhard E. Knigge
发明人： Martin Yu-Wen Chen , John Contreras , Luiz M. Franca-Neto , Bernhard E. Knigge
IPC分类号： G11B5/60 , G11B27/36
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。

9. 发明授权

US07719786B1 Active fly height control using radio frequency feedback 有权
标题翻译：主动飞行高度控制采用射频反馈
公开(公告)号：US07719786B1
公开(公告)日：2010-05-18
申请号：US12343039
申请日：2008-12-23
申请人： Peter Baumgart , Luiz M. Franca-Neto , Bernhard E. Knigge
发明人： Peter Baumgart , Luiz M. Franca-Neto , Bernhard E. Knigge
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。

10. 发明授权

US08599653B1 Systems and methods for reducing condensation along a slider air bearing surface in energy assisted magnetic recording 有权
标题翻译：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
申请人： Michael L. Mallary , Bernhard E. Knigge , Jih-Ping Peng
发明人： Michael L. Mallary , Bernhard E. Knigge , Jih-Ping Peng
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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