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1. 发明申请

US20060092543A1 System, method, and apparatus for in-situ stray magnetic field measurement 失效
标题翻译：用于原位杂散磁场测量的系统，方法和装置
公开(公告)号：US20060092543A1
公开(公告)日：2006-05-04
申请号：US10977678
申请日：2004-10-29
申请人： Xiaodong Che , Wen-Chien Hsiao , Yansheng Luo , Xiaoyu Sui
发明人： Xiaodong Che , Wen-Chien Hsiao , Yansheng Luo , Xiaoyu Sui
IPC分类号： G11B15/04
CPC分类号： G11B25/043 , G11B33/1493
摘要： A hard disk drive (HDD) detects and measures external stray magnetic fields with existing HDD components. After detecting a strong external magnetic field, read and write operations of the HDD are suspended, and/or other proper corrective actions are taken to minimize loss of data. To measure the stray magnetic field, the magnetic head reader is used as a field sensor. The resistance of the reader changes in the presence of the field, such as with the preamp in the HDD. The resistance also changes with temperature. If the temperature inside the HDD is measured, the resistance change due to temperature is normalized. Even without being able to measure the HDD temperature, the stray magnetic field can be measured with a top head and a bottom head in the HDD. The temperature sensitivity of the reader is thereby cancelled out.
摘要翻译：硬盘驱动器（HDD）用现有的HDD组件来检测和测量外部杂散磁场。在检测到强大的外部磁场之后，HDD的读取和写入操作被暂停，和/或采取其他适当的纠正措施以最小化数据丢失。为了测量杂散磁场，磁头阅读器被用作场传感器。读取器的电阻会在场的存在情况下发生变化，例如使用HDD中的前置放大器。电阻也随温度而变化。如果测量HDD内部的温度，则由于温度导致的电阻变化被归一化。即使不能测量HDD温度，也可以用HDD中的顶部头部和底部头部来测量杂散磁场。因此读取器的温度敏感度被抵消。

2. 发明申请

US20060227449A1 METHOD AND APPARATUS FOR OPTIMIZING RECORD QUALITY WITH VARYING TRACK AND LINEAR DENSITY BY ALLOWING OVERLAPPING DATA TRACKS 有权
标题翻译：通过允许重写数据轨迹优化记录质量与改变轨迹和线性密度的方法和装置
公开(公告)号：US20060227449A1
公开(公告)日：2006-10-12
申请号：US11104209
申请日：2005-04-11
申请人： Xiaodong Che , Wen-Chien Hsiao , Yansheng Luo , Xiaoyu Sui , Samuel Yuan
发明人： Xiaodong Che , Wen-Chien Hsiao , Yansheng Luo , Xiaoyu Sui , Samuel Yuan
IPC分类号： G11B21/02
CPC分类号： G11B5/59633 , G11B5/012 , G11B2005/001
摘要： A method and apparatus for optimizing data record quality on a disk for a pair of read and write heads, in which the write head is bigger, by adaptively varying linear and track density of overlapping recorded tracks to achieve a target storage capacity. In the method, target storage capacity and radial writing direction are selected. Read and write widths of heads are determined. A linear density and offset distance pairing for optimizing record quality at target storage capacity is determined, wherein offset distance is less than write width but greater than read width. The write head writes a track at the linear density, is offset in the radial direction by the offset distance, and the offset distance is stored. The write head writes a new track at the linear density. Offsetting, storing offset, and writing a new track are repeated until desired data is written into a cluster.
摘要翻译：一种用于通过自适应地改变重叠记录轨道的线性和轨道密度以实现目标存储容量来优化写头的一对读写头的盘上的数据记录质量的方法和装置。在该方法中，选择目标存储容量和径向写入方向。磁头读写宽度确定。确定用于优化目标存储容量的记录质量的线性密度和偏移距离配对，其中偏移距离小于写入宽度但大于读取宽度。写入头以线性密度写入轨迹，在径向上偏移偏移距离，并存储偏移距离。写头以线性密度写入新的轨迹。重复偏移，存储偏移和写入新轨道，直到所需数据写入群集。

3. 发明申请

US20050264930A1 Method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference 失效
标题翻译：用于向写头提供改进的极尖以改善重写和/或相邻轨道干扰的方法和装置
公开(公告)号：US20050264930A1
公开(公告)日：2005-12-01
申请号：US10857363
申请日：2004-05-28
申请人： Savas Gider , Wen-Chien Hsiao , Quan-chiu Lam , Terence Lam , Edward Hin Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
发明人： Savas Gider , Wen-Chien Hsiao , Quan-chiu Lam , Terence Lam , Edward Hin Lee , Yansheng Luo , Vladimir Nikitin , Changqing Shi , Xiaoyu Sui
IPC分类号： G11B5/23 , G11B5/31
CPC分类号： G11B5/3116
摘要： A method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interference. A cross pole tip writer is provided with a shape that is designed to reduce the saturation on the pole tip and aid in the concentration of flux to the down track.
摘要翻译：一种用于向写头提供改进的极尖以改善覆盖和/或相邻轨道干扰的方法和装置。十字极尖端写入器具有被设计成减小极尖上的饱和度的形状，并且有助于向下轨道的通量的集中。

4. 发明申请

US20070236831A1 Shaped trailing shield of a perpendicular recording write element 有权
标题翻译：垂直记录写元件的形状的后盾
公开(公告)号：US20070236831A1
公开(公告)日：2007-10-11
申请号：US11399548
申请日：2006-04-06
申请人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146
摘要： Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.
摘要翻译：讨论了具有写极点和相关联的后屏蔽的写元件。后挡板的前端面向写极的后侧。后挡板的前侧具有这样的形状，使得前侧的中心部分比后挡板的前侧的轨道边缘部分具有比写入极的后侧更小的间隔。当从ABS观察时，后护罩的前侧的示例性形状可以是凸形。尾部屏蔽的前端的形状使得后屏蔽件在轨道边缘处从写入极的后侧分流较少的磁场，使得在轨道边缘处的写入的转变不会滞后于在轨道中心允许更直接的过渡。

5. 发明授权

US07821736B2 Shaped trailing shield of a perpendicular recording write element 有权
标题翻译：垂直记录写元件的形状的后盾
公开(公告)号：US07821736B2
公开(公告)日：2010-10-26
申请号：US11399548
申请日：2006-04-06
申请人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Xiaodong Che , Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/127
CPC分类号： G11B5/1278 , G11B5/11 , G11B5/3116 , G11B5/3146
摘要： Write elements are discussed having a write pole and an associated trailing shield. A leading side of the trailing shield faces a trailing side of the write pole. The leading side of the trailing shield has a shape such that a center portion of the leading side has less of a separation from the trailing side of the write pole than track edge portions of the leading side of the trailing shield. An exemplary shape the leading side of the trailing shield may be a convex shape when viewed from the ABS. The shape of the leading side of the trailing shield causes the trailing shield to shunt less of the magnetic field from the trailing side of the write pole at the track edges so that the written transition at the track edge will not lag behind the written transition at the track center allowing for a straighter transition.
摘要翻译：讨论了具有写极点和相关联的后屏蔽的写元件。后挡板的前端面向写极的后侧。后挡板的前侧具有这样的形状，使得前侧的中心部分比后挡板的前侧的轨道边缘部分具有比写入极的后侧更小的间隔。当从ABS观察时，后护罩的前侧的示例性形状可以是凸形。尾部屏蔽的前端的形状使得后屏蔽件在轨道边缘处从写入极的后侧分流较少的磁场，使得在轨道边缘处的写入的转变不会滞后于在轨道中心允许更直接的过渡。

6. 发明授权

US07525760B2 Laminated write gap to improve writer performance 失效
标题翻译：叠层写差距提高作家的表现
公开(公告)号：US07525760B2
公开(公告)日：2009-04-28
申请号：US11104333
申请日：2005-04-11
申请人： Wen-Chien Hsiao , Terence Lam , Bernd Lamberts , Yinshi Liu , Terry Olson , Michael Yang , Samuel Yuan
发明人： Wen-Chien Hsiao , Terence Lam , Bernd Lamberts , Yinshi Liu , Terry Olson , Michael Yang , Samuel Yuan
IPC分类号： G11B5/235
CPC分类号： G11B5/3116 , G11B5/235
摘要： Embodiments of the present invention recite a write gap structure for a magnetic recording head. In one embodiment, the write gap structure comprises at least one layer of inert material is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, the write gap structure further comprises a second layer of inert material is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the write gap structure only overlies a portion of the write gap of the magnetic recording head with reference to the throat height dimension of the write gap.
摘要翻译：本发明的实施例叙述磁记录头的写间隙结构。在一个实施例中，写间隙结构包括至少一层惰性材料，靠近磁记录头的P2极设置。磁性材料层设置在惰性材料层与磁记录头的P1基座（P1P）之间。在本发明的实施例中，写间隙结构还包括第二层惰性材料设置在磁性材料层和磁记录头的P1P之间。在本发明的实施例中，相对于写入间隙的喉部高度尺寸，写入间隙结构仅覆盖磁记录头的写入间隙的一部分。

7. 发明申请

US20060230602A1 Process for fabricating a magnetic recording head with a laminated write gap 失效
公开(公告)号：US20060230602A1
公开(公告)日：2006-10-19
申请号：US11104212
申请日：2005-04-11
申请人： Wen-Chien Hsiao , Terence Lam , Yinshi Liu , Michael Yang , Samuel Yuan
发明人： Wen-Chien Hsiao , Terence Lam , Yinshi Liu , Michael Yang , Samuel Yuan
IPC分类号： G11B5/127 , H04R31/00 , G11B5/187
CPC分类号： G11B5/3116 , G11B5/23 , G11B5/3163 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： Embodiments of the present invention recite a process for fabricating a write gap structure for a magnetic recording head. In one embodiment, at least one layer of inert material is deposited which is disposed proximate to the P2 pole of a magnetic recording head. A layer of magnetic material is deposited which is disposed between the layer of inert material and the P1 pedestal (P1P) of the magnetic recording head. In embodiments of the present invention, a second layer of inert material is deposited which is disposed between the layer of magnetic material and the P1P of the magnetic recording head. In embodiments of the present invention, the throat height of the write gap structure is defined wherein the layer of magnetic material and the inert layer only overlie a portion of the P1 pedestal of the magnetic recording head.

8. 发明申请

US20050024785A1 Method and apparatus for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads having a self-pinned bias layer extending beyond the free layer 失效
标题翻译：用于增强热稳定性的方法和装置，改善偏压并且减少在具有延伸超过自由层的自固定偏置层的自固定邻接接头中的静电放电的损伤
公开(公告)号：US20050024785A1
公开(公告)日：2005-02-03
申请号：US10629529
申请日：2003-07-29
申请人： Hardayal Gill , Wen-Chien Hsiao , Jih-Shiuan Luo
发明人： Hardayal Gill , Wen-Chien Hsiao , Jih-Shiuan Luo
IPC分类号： G11B5/39 , G11B5/127 , G11B5/33
CPC分类号： G11B5/3912 , G11B5/3932
摘要： A method and apparatus for enhancing thermal stability, improving biasing and reducing damage from electrical surges in self-pinned abutted junction heads. The head includes a free layer having a first end and a second end defining a width selected to form a desired trackwidth and an extended self-pinned bias layer extending beyond the ends of the free layer, the self-pinned bias layer extending beyond the free layer increasing the volume of the extended self-pinned bias layer to provide greater thermal stability and stronger pinning of the free layer.
摘要翻译：一种用于增强热稳定性，改善偏压并减少自销接合接头中的电涌的损伤的方法和装置。头包括自由层，其具有第一端和限定被选择以形成期望的轨道宽度的宽度的第二端和延伸超过自由层的端部的扩展的自固定偏置层，自固定偏置层延伸超过自由层增加了扩展的自固定偏置层的体积，以提供更大的热稳定性和较强的自由层的钉扎。

9. 发明授权

US08474127B2 Method for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads 有权
标题翻译：提高热稳定性，改善偏压和减少自固定邻接接头中静电放电损伤的方法
公开(公告)号：US08474127B2
公开(公告)日：2013-07-02
申请号：US11494241
申请日：2006-07-27
申请人： Hardayal Singh Gill , Wen-Chien Hsiao , Jih-Shiuan Luo
发明人： Hardayal Singh Gill , Wen-Chien Hsiao , Jih-Shiuan Luo
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3932 , Y10T29/49032 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method for enhancing thermal stability, improving biasing and reducing damage from electrical surges in self-pinned abutted junction heads. The method includes forming a free layer, forming first hard bias layers abutting the free layer and forming second hard bias layers over the first hard bias layers discontiguous from the free layer, the second hard bias layers being anti-parallel to the first hard bias layers, the first and second hard bias layers providing a net longitudinal bias on the free layer.
摘要翻译：一种用于增强热稳定性，改善偏压并减少自固定邻接接头中电涌的损伤的方法。该方法包括形成自由层，形成邻接自由层的第一硬偏压层，并在与自由层不相邻的第一硬偏压层上形成第二硬偏压层，第二硬偏压层与第一硬偏压层反平行第一和第二硬偏压层在自由层上提供净纵向偏压。

10. 发明授权

US07877859B2 Shield fabrication of magnetic write heads 有权
标题翻译：磁写头的屏蔽制造
公开(公告)号：US07877859B2
公开(公告)日：2011-02-01
申请号：US11767330
申请日：2007-06-22
申请人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
发明人： Wen-Chien Hsiao , Yimin Hsu , Vladimir Nikitin
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/11 , G11B33/1493 , Y10T29/49021 , Y10T29/49028 , Y10T29/49032 , Y10T29/49043 , Y10T29/49155 , Y10T29/49165
摘要： Methods are provided for fabricating a write head with a self aligned wrap around shield and a self aligned flared region of a write pole. A flare point and a track width of a write pole may be fabricated using multiple processes. The multiple processes utilize several masking structures to define the track width and the flare point of the write pole. A mask structure is formed to cover a first portion of the write pole. An edge of the mask structure adjacent to an exposed second portion of the write pole defines a flare point of the write pole. Various structures of the write head, including shield gap layers, a wrap around shield and a flared region (e.g., the yoke) of the write pole may be fabricated from the flare point defined by the mask structure.
摘要翻译：提供了用于制造具有围绕屏蔽件的自对准包裹和写入极的自对准扩口区域的写入头的方法。可以使用多个工艺来制造写极点的闪点和轨道宽度。多个过程利用几个掩模结构来定义磁道宽度和写入磁极的扩展点。形成掩模结构以覆盖写入极的第一部分。掩模结构的与写入极的暴露的第二部分相邻的边缘限定了写入极的扩张点。写磁头的各种结构，包括屏蔽间隙层，环绕屏蔽层和写磁极的扩口区域（例如磁轭）可以由掩模结构限定的扩口来制造。

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