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1. 发明申请

US20080094743A1 Track width measurement for magnetic recording heads 失效
标题翻译：磁记录头的轨道宽度测量
公开(公告)号：US20080094743A1
公开(公告)日：2008-04-24
申请号：US11708941
申请日：2007-02-20
申请人： Yong Shen , Mike X. Wang , Jing Zhang
发明人： Yong Shen , Mike X. Wang , Jing Zhang
IPC分类号： G11B5/02
CPC分类号： G11B5/455 , G11B5/4555
摘要： One embodiment in accordance with the invention is a method for measuring a track width for a magnetic recording head comprising writing a first track and a second track on a disk at two different positions. Note that the first track is written at a frequency plus a frequency shift value while the second track is written at the frequency minus the frequency shift value.
摘要翻译：根据本发明的一个实施例是一种用于测量磁记录头的轨道宽度的方法，包括在两个不同位置在盘上写入第一轨道和第二轨道。注意，第一磁道以频率加上频移值写入，而第二磁道被写入频率减去频移值。

2. 发明授权

US07529050B2 Track width measurement for magnetic recording heads 失效
标题翻译：磁记录头的轨道宽度测量
公开(公告)号：US07529050B2
公开(公告)日：2009-05-05
申请号：US11708941
申请日：2007-02-20
申请人： Yong Shen , Mike X. Wang , Jing Zhang
发明人： Yong Shen , Mike X. Wang , Jing Zhang
IPC分类号： G11B5/455 , G11B27/36
CPC分类号： G11B5/455 , G11B5/4555
摘要： One embodiment in accordance with the invention is a method for measuring a track width for a magnetic recording head comprising writing a first track and a second track on a disk at two different positions. Note that the first track is written at a frequency plus a frequency shift value while the second track is written at the frequency minus the frequency shift value.
摘要翻译：根据本发明的一个实施例是一种用于测量磁记录头的轨道宽度的方法，包括在两个不同位置在盘上写入第一轨道和第二轨道。注意，第一磁道以频率加上频移值写入，而第二磁道被写入频率减去频移值。

3. 发明授权

US08174779B2 Discrete device testing 有权
标题翻译：分立器件测试
公开(公告)号：US08174779B2
公开(公告)日：2012-05-08
申请号：US11591080
申请日：2006-10-31
申请人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
发明人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
IPC分类号： G11B27/36
CPC分类号： G06F11/26
摘要： One embodiment in accordance with the invention is a method that comprises testing a first number of physical devices using a first test sequence that comprises an item. A second number of physical devices are tested using a second test sequence. It is noted that the second test sequence comprises the item of the first test and a second item.
摘要翻译：根据本发明的一个实施例是一种方法，其包括使用包括项目的第一测试序列来测试第一数量的物理设备。使用第二测试序列测试第二数量的物理设备。注意，第二测试序列包括第一测试项目和第二项目。

4. 发明申请

US20080104449A1 Discrete device testing 有权
标题翻译：分立器件测试
公开(公告)号：US20080104449A1
公开(公告)日：2008-05-01
申请号：US11591080
申请日：2006-10-31
申请人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
发明人： Terry Farren , Heng Gong , Yong Shen , Jing Zhang
IPC分类号： G06F11/36
CPC分类号： G06F11/26
摘要： One embodiment in accordance with the invention is a method that comprises testing a first number of physical devices using a first test sequence that comprises an item. A second number of physical devices are tested using a second test sequence. It is noted that the second test sequence comprises the item of the first test and a second item.
摘要翻译：根据本发明的一个实施例是一种方法，其包括使用包括项目的第一测试序列来测试第一数量的物理设备。使用第二测试序列测试第二数量的物理设备。注意，第二测试序列包括第一测试项目和第二项目。

5. 发明申请

US20070217051A1 System and method for determining head-disk contact in a magnetic recording disk drive by magnetoresistive signal amplitude 失效
标题翻译：用于通过磁阻信号振幅确定磁记录盘驱动器中的磁头盘接触的系统和方法
公开(公告)号：US20070217051A1
公开(公告)日：2007-09-20
申请号：US11376660
申请日：2006-03-14
申请人： Yong Shen , Jing Zhang
发明人： Yong Shen , Jing Zhang
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/60 , G11B5/3948 , G11B5/6029
摘要： A system and method for determining head-disk contact (HDC) in a disk drive uses the signal from the magnetoresistive (MR) read head and does not require the presence of magnetic transitions on the disk. The method thus has application in head-disk testers or “spin stands” to facilitate the design and testing of slider-suspension assemblies and fly-height actuators, as well as in disk drives to take corrective action before HDC and/or to control fly-height actuators. The invention is also a magnetic recording disk drive that has a fly-height actuator and a low-pass filter and comparator circuit for the MR signal. When the output of the filter exceeds a threshold the comparator circuit output indicates the onset of HDC. The comparator circuit output is input to a digital processor or controller. When the controller determines the onset of HDC or that HDC has occurred, it generates a control signal that can be used to cause the disk drive to take corrective action.
摘要翻译：用于确定磁盘驱动器中的磁头盘接触（HDC）的系统和方法使用来自磁阻（MR）读取头的信号，并且不需要在磁盘上存在磁转变。因此，该方法可用于头盘测试器或“旋转支架”，以便于滑块悬挂组件和飞高执行器的设计和测试，以及磁盘驱动器在HDC之前采取校正动作和/或控制飞行高精度执行器。本发明还是一种磁记录盘驱动器，其具有飞行高度致动器和用于MR信号的低通滤波器和比较器电路。当滤波器的输出超过阈值时，比较器电路输出指示HDC的开始。比较器电路输出被输入到数字处理器或控制器。当控制器确定HDC的发生或HDC已经发生时，它产生可用于使磁盘驱动器采取校正动作的控制信号。

6. 发明授权

US07050934B1 Method of weighted combination specs for enhanced manufacturing yield 有权
标题翻译：加权组合规格的增强制造产量的方法
公开(公告)号：US07050934B1
公开(公告)日：2006-05-23
申请号：US10997173
申请日：2004-11-24
申请人： Yong Shen , Jing Zhang
发明人： Yong Shen , Jing Zhang
IPC分类号： G06F11/30
CPC分类号： G05B17/02 , G06Q10/06
摘要： Embodiments of the invention provide methods for enhancing the downstream product yield without significantly affecting the yield of components from which downstream products are made or enhancing yield of the components without significantly affecting the downstream product yield and performance. In one embodiment, a method comprises obtaining a failure rate of the downstream manufacturing process as a function of each of a plurality of component performance parameters of the current manufacturing process of the component; optimizing weighted factors based on correlation between the current manufacturing process of the component and the downstream product, the weight factors each corresponding to one of the plurality of component performance parameters; and calculating figure of merits (FOM) with respect to the plurality of component performance parameters of the current manufacturing process of the component, the FOM including the weighted factors.
摘要翻译：本发明的实施方案提供了用于增强下游产物产率而不显着影响下游产物制备成分的产率或提高组分的产率而不显着影响下游产物产率和性能的方法。在一个实施例中，一种方法包括根据组件的当前制造过程的多个部件性能参数中的每一个获得下游制造过程的故障率; 基于所述组件的当前制造过程与所述下游产品之间的相关性来优化加权因子，所述权重因子各自对应于所述多个组件性能参数之一; 以及针对所述部件的当前制造过程的所述多个部件性能参数计算所述优点（FOM），所述FOM包括所述加权因子。

7. 发明申请

US20060111869A1 METHOD OF WEIGHTED COMBINATION SPECS FOR ENHANCED MANUFACTURING YIELD 有权
标题翻译：加强组合规范的加强制造方法
公开(公告)号：US20060111869A1
公开(公告)日：2006-05-25
申请号：US10997173
申请日：2004-11-24
申请人： Yong Shen , Jing Zhang
发明人： Yong Shen , Jing Zhang
IPC分类号： G06F17/18 , G06F19/00
CPC分类号： G05B17/02 , G06Q10/06
摘要： Embodiments of the invention provide methods for enhancing the downstream product yield without significantly affecting the yield of components from which downstream products are made or enhancing yield of the components without significantly affecting the downstream product yield and performance. In one embodiment, a method comprises obtaining a failure rate of the downstream manufacturing process as a function of each of a plurality of component performance parameters of the current manufacturing process of the component; optimizing weighted factors based on correlation between the current manufacturing process of the component and the downstream product, the weight factors each corresponding to one of the plurality of component performance parameters; and calculating figure of merits (FOM) with respect to the plurality of component performance parameters of the current manufacturing process of the component, the FOM including the weighted factors.
摘要翻译：本发明的实施方案提供了用于增强下游产物产率而不显着影响下游产物制备成分的产率或提高组分的产率而不显着影响下游产物产率和性能的方法。在一个实施例中，一种方法包括根据组件的当前制造过程的多个部件性能参数中的每一个获得下游制造过程的故障率; 基于所述组件的当前制造过程与所述下游产品之间的相关性来优化加权因子，所述权重因子各自对应于所述多个组件性能参数之一; 以及针对所述部件的当前制造过程的所述多个部件性能参数计算所述优点（FOM），所述FOM包括所述加权因子。

8. 发明授权

US07292401B2 System and method for determining head-disk contact in a magnetic recording disk drive by magnetoresistive signal amplitude 失效
公开(公告)号：US07292401B2
公开(公告)日：2007-11-06
申请号：US11376660
申请日：2006-03-14
申请人： Yong Shen , Jing Zhang
发明人： Yong Shen , Jing Zhang
IPC分类号： G11B15/18
CPC分类号： G11B5/60 , G11B5/3948 , G11B5/6029
摘要： A system and method for determining head-disk contact (HDC) in a disk drive uses the signal from the magnetoresistive (MR) read head and does not require the presence of magnetic transitions on the disk. The method thus has application in head-disk testers or “spin stands” to facilitate the design and testing of slider-suspension assemblies and fly-height actuators, as well as in disk drives to take corrective action before HDC and/or to control fly-height actuators. The invention is also a magnetic recording disk drive that has a fly-height actuator and a low-pass filter and comparator circuit for the MR signal. When the output of the filter exceeds a threshold the comparator circuit output indicates the onset of HDC. The comparator circuit output is input to a digital processor or controller. When the controller determines the onset of HDC or that HDC has occurred, it generates a control signal that can be used to cause the disk drive to take corrective action.

9. 发明授权

US08547730B1 Method and system for providing a spin tunneling magnetic element having a crystalline barrier layer 有权
标题翻译：提供具有结晶阻挡层的自旋隧穿磁性元件的方法和系统
公开(公告)号：US08547730B1
公开(公告)日：2013-10-01
申请号：US12712085
申请日：2010-02-24
申请人： Yong Shen , Qunwen Leng
发明人： Yong Shen , Qunwen Leng
IPC分类号： G11C11/00 , H01L29/82
CPC分类号： H01F10/3295 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G01R33/098 , G11B5/3906 , G11B5/3909 , G11C11/161 , H01F10/3254 , H01F10/3268 , H01F41/307 , H01L43/12
摘要： The method and system for providing a spin tunneling element are disclosed. The method and system include depositing a pinned layer, a barrier layer, and a free layer. The barrier layer has a first crystal structure and a texture. The free layer includes a first ferromagnetic layer and a second ferromagnetic layer. The first ferromagnetic is adjacent to the second ferromagnetic layer and between the second ferromagnetic layer and the barrier layer. The first ferromagnetic layer has the first crystal structure and the texture, while the second ferromagnetic layer has a second crystal structure different from the first crystal structure.
摘要翻译：公开了用于提供自旋隧穿元件的方法和系统。该方法和系统包括沉积钉扎层，阻挡层和自由层。阻挡层具有第一晶体结构和纹理。自由层包括第一铁磁层和第二铁磁层。第一铁磁体与第二铁磁层相邻，并且在第二铁磁层与阻挡层之间。第一铁磁层具有第一晶体结构和纹理，而第二铁磁层具有与第一晶体结构不同的第二晶体结构。

10. 发明授权

US08077434B1 Perpendicular magnetic recording head having a recessed magnetic base layer 有权
标题翻译：具有凹陷磁性基底层的垂直磁记录头
公开(公告)号：US08077434B1
公开(公告)日：2011-12-13
申请号：US11942113
申请日：2007-11-19
申请人： Yong Shen , Lei Larry Zhang , Yingjian Chen , Ut Tran
发明人： Yong Shen , Lei Larry Zhang , Yingjian Chen , Ut Tran
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/3116
摘要： A method and system for providing a magnetic transducer having an air-bearing surface (ABS) are described. The magnetic transducer includes a base layer, a perpendicular magnetic recording (PMR) pole on the base layer, an additional pole, a write shield, a write gap between the PMR pole and a portion of the write shield, and coil(s) that energize at least the additional pole. The base layer includes a first portion proximate to the ABS and a second portion recessed from the ABS. The first portion is nonmagnetic, while the second portion is magnetic. The PMR pole has a first front portion proximate to the ABS. The additional pole has a second front portion recessed from the ABS. At least a portion of the additional pole resides between the PMR pole and write shield. At least a portion of the write gap resides on the front portion of the PMR pole.
摘要翻译：描述了一种用于提供具有空气轴承表面（ABS）的磁换能器的方法和系统。磁换能器包括基层，基层上的垂直磁记录（PMR）极，附加极，写屏蔽，PMR极与写屏蔽的一部分之间的写间隙，以及线圈，至少激励附加极点。基层包括靠近ABS的第一部分和从ABS凹陷的第二部分。第一部分是非磁性的，而第二部分是磁性的。 PMR杆具有靠近ABS的第一前部。附加的杆具有从ABS凹入的第二前部。附加极点的至少一部分位于PMR极和写保护罩之间。写入间隙的至少一部分位于PMR极的前部。

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