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1. 发明申请

US20080259482A1 Fabrication of discrete track media for narrow groove and improved reliability 审中-公开
标题翻译：用于窄沟槽的离散轨道介质的制造和可靠性的提高
公开(公告)号：US20080259482A1
公开(公告)日：2008-10-23
申请号：US11788630
申请日：2007-04-20
申请人： Kiseok Moon , Soo Youl Hong , Yawshing Tang , Xiaodong Che
发明人： Kiseok Moon , Soo Youl Hong , Yawshing Tang , Xiaodong Che
IPC分类号： G11B5/02 , G11B5/127 , B05D5/12 , G11B5/82
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： A magnetic media that has at least one groove. The groove is created by a process that includes initially forming a temporary layer over a magnetic layer of the disk. One or more grooves are formed in the temporary and magnetic layers. The temporary layer is removed and a protective layer is formed over the magnetic layer and within the groove.
摘要翻译：具有至少一个凹槽的磁性介质。凹槽由包括最初在盘的磁性层上形成临时层的工艺产生。在临时层和磁层中形成一个或多个凹槽。移除临时层，并且在磁性层上和沟槽内形成保护层。

2. 发明授权

US07542227B2 Flying height measurement and control with user data signal 失效
公开(公告)号：US07542227B2
公开(公告)日：2009-06-02
申请号：US11824147
申请日：2007-06-29
申请人： Xiaodong Che , Yawshing Tang
发明人： Xiaodong Che , Yawshing Tang
IPC分类号： G11B21/02
CPC分类号： G11B5/6029
摘要： A hard disk drive that determines a flying height from a slope of a line created from a ratio of amplitudes of frequencies in response to impulse functions. A first set of amplitudes of reference frequencies can be determined from a reference impulse. A second set of amplitudes of data frequencies can be determined from a data impulse during operation of the disk drive. Ratios of amplitudes of the data and reference frequencies at different discrete frequencies can be plotted. The slope of the plotted line corresponds to the difference between the flying height when the reference impulse is generated and the flying height when the data impulse is generated. The disk drive may utilize the slope in a feedback routine to control the flying height.

3. 发明申请

US20090002870A1 Flying height measurement and control with user data signal 失效
标题翻译：飞行高度测量与控制用户数据信号
公开(公告)号：US20090002870A1
公开(公告)日：2009-01-01
申请号：US11824147
申请日：2007-06-29
申请人： Xiaodong Che , Yawshing Tang
发明人： Xiaodong Che , Yawshing Tang
IPC分类号： G11B21/02
CPC分类号： G11B5/6029
摘要： A hard disk drive that determines a flying height from a slope of a line created from a ratio of amplitudes of frequencies in response to impulse functions. A first set of amplitudes of reference frequencies can be determined from a reference impulse. A second set of amplitudes of data frequencies can be determined from a data impulse during operation of the disk drive. Ratios of amplitudes of the data and reference frequencies at different discrete frequencies can be plotted. The slope of the plotted line corresponds to the difference between the flying height when the reference impulse is generated and the flying height when the data impulse is generated. The disk drive may utilize the slope in a feedback routine to control the flying height.
摘要翻译：一个硬盘驱动器，用于根据脉冲函数的频率幅度比，确定从一条线的斜率上的飞行高度。参考频率的第一组幅度可以从参考脉冲确定。可以在磁盘驱动器的操作期间从数据脉冲确定数据频率的第二组振幅。可以绘制不同离散频率下的数据和参考频率的幅度比。绘制线的斜率对应于当产生参考脉冲时的飞行高度与产生数据脉冲时的飞行高度之间的差。磁盘驱动器可以利用反馈程序中的斜率来控制飞行高度。

4. 发明申请

US20080055772A1 Method and apparatus for predicting contact of a read-write head in a hard disk drive 审中-公开
标题翻译：用于预测硬盘驱动器中的读写头的接触的方法和装置
公开(公告)号：US20080055772A1
公开(公告)日：2008-03-06
申请号：US11698751
申请日：2007-01-26
申请人： Chris McMillan , Umesh Chandra , Yawshing Tang , Xiaodong Che , Hoyul Bang
发明人： Chris McMillan , Umesh Chandra , Yawshing Tang , Xiaodong Che , Hoyul Bang
IPC分类号： G11B5/52
CPC分类号： G11B19/041 , G11B5/455 , G11B5/58
摘要： A Pre-Contact Signal Detector (PCSD) used to predict contact between read-write head and disk surface. A preamplifier may include the PCSD. A main flex circuit may include the preamplifier. A head stack assembly may include the main flex circuit. An embedded circuit may use a pre-contact alert circuit, which may also be included in the PCSD and/or the preamplifier, also the main flex circuit, the head stack assembly. A hard disk drive may include the head stack assembly communicating with the embedded circuit. Manufacturing methods for these and their products of the manufacturing processes, including the program system.
摘要翻译：用于预测读写头和磁盘表面之间的接触的预接触信号检测器（PCSD）。前置放大器可以包括PCSD。主柔性电路可以包括前置放大器。磁头堆叠组件可以包括主柔性电路。嵌入式电路可以使用预接触警报电路，其也可以包括在PCSD和/或前置放大器中，以及主柔性电路，磁头堆叠组件中。硬盘驱动器可以包括与嵌入式电路通信的磁头堆叠组件。这些制造方法及其制造过程的制造过程，包括程序系统。

5. 发明授权

US08736996B2 Implementing channel signal processing assist with ECS contact detection 有权
标题翻译：实现信道信号处理有助于ECS接触检测
公开(公告)号：US08736996B2
公开(公告)日：2014-05-27
申请号：US13475787
申请日：2012-05-18
申请人： Xiaodong Che , Weldon Mark Hanson
发明人： Xiaodong Che , Weldon Mark Hanson
IPC分类号： G11B27/36 , G11B5/09 , G11B21/02
CPC分类号： G11B27/36 , G11B5/6029 , G11B5/607 , G11B5/6076 , G11B20/10305
摘要： A method, apparatus, and system for implementing channel signal processing assist with an embedded contact sensor (ECS) in hard disk drives. An ECS signal is captured during write and idle operation of the hard disk drive. A read channel monitors changes in the ECS signal providing a clearance monitor function for insuring write integrity.
摘要翻译：用于实现信道信号处理的方法，装置和系统有助于硬盘驱动器中的嵌入式接触传感器（ECS）。在硬盘驱动器的写入和空闲操作期间捕获ECS信号。读通道监视ECS信号的变化，提供清除监视功能，以确保写入完整性。

6. 发明授权

US08537496B2 Perpendicular magnetic write head having a trailing wrap-around magnetic shield magnetically biased in a cross track direction 有权
标题翻译：垂直磁性写头，其具有沿横向方向磁偏置的尾部缠绕磁屏蔽
公开(公告)号：US08537496B2
公开(公告)日：2013-09-17
申请号：US12844736
申请日：2010-07-27
申请人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
发明人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
IPC分类号： G11B5/11
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A perpendicular magnetic write head having improved Bit Error Rate (BER), Adjacent Track Interference (ATI) and Far Track Interference (FTI). The write head includes a write pole and a trailing wrap-around magnetic shield. A permanent magnetic is located at either outer side of the shield. These magnets are magnetized to have magnetizations that are oriented in the same direction, in a direction that is perpendicular to the track direction and parallel with the air bearing surface.
摘要翻译：具有改进的误码率（BER），相邻轨道干扰（ATI）和远距离干扰（FTI））的垂直磁性写入头。写头包括一个写入磁极和一个后围环绕磁屏蔽。永久磁铁位于屏蔽的外侧。这些磁体被磁化以具有在垂直于轨道方向并平行于空气轴承表面的方向上沿相同方向定向的磁化。

7. 发明申请

US20120026628A1 PERPENDICULAR MAGNETIC WRITE HEAD HAVING A TRAILING WRAP-AROUND MAGNETIC SHIELD MAGNETICALLY BIASED IN A CROSS TRACK DIRECTION 有权
标题翻译：具有缠绕缠绕磁性屏蔽的磁性写字母磁头在交叉轨迹方向上偏移
公开(公告)号：US20120026628A1
公开(公告)日：2012-02-02
申请号：US12844736
申请日：2010-07-27
申请人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
发明人： Zhihao Li , Xiaodong Che , Zhen Jin , Yansheng Luo
IPC分类号： G11B5/17 , G11B5/48
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315
摘要： A perpendicular magnetic write head having improved Bit Error Rate (BER), Adjacent Track Interference (ATI) and Far Track Interference (FTI). The write head includes a write pole and a trailing wrap-around magnetic shield. A permanent magnetic is located at either outer side of the shield. These magnets are magnetized to have magnetizations that are oriented in the same direction, in a direction that is perpendicular to the track direction and parallel with the air bearing surface.
摘要翻译：具有改进的误码率（BER），相邻轨道干扰（ATI）和远距离干扰（FTI））的垂直磁性写入头。写头包括一个写入磁极和一个后围环绕磁屏蔽。永久磁铁位于屏蔽的外侧。这些磁体被磁化以具有在垂直于轨道方向并平行于空气轴承表面的方向上沿相同方向定向的磁化。

8. 发明申请

US20080158705A1 Write head tester 审中-公开
标题翻译：写头测试仪
公开(公告)号：US20080158705A1
公开(公告)日：2008-07-03
申请号：US11648368
申请日：2006-12-28
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： G11B27/36
CPC分类号： G11B27/36 , G11B5/3196 , G11B5/455 , G11B2220/2516
摘要： A write head tester is disclosed. The write head tester includes a rotatably coupled magnetic media having a stand-off thereover. In addition, a write head holder is fixedly coupled with the tester. The write head holder receives and electrically couples a removably coupleable write head such that the removably coupleable write head is capable of performing a write on the magnetic media. A read head is also fixedly coupled with the tester. The read head is utilized for performing a read on the magnetic media. Furthermore, an evaluator is provided for accessing a result of the read on the magnetic media and evaluating the removably coupleable write head based on the read.
摘要翻译：公开了一种写入头测试器。写入头测试器包括一个可旋转耦合的磁性介质，其中有一个支架。此外，写头保持架与测试仪固定连接。写头保持器接收并电耦合可移除地可耦合的写入头，使得可移除地可耦合的写入头能够对磁性介质执行写入。读头也与测试仪固定连接。读取头用于对磁性介质进行读取。此外，提供评估器用于访问磁介质上的读取结果并基于读取来评估可拆卸地耦合的写入头。

9. 发明授权

US07133241B2 Method and apparatus for optimizing record quality with varying track and linear density by allowing overlapping data tracks 有权
标题翻译：通过允许重叠的数据轨道来优化具有不同轨迹和线性密度的记录质量的方法和装置
公开(公告)号：US07133241B2
公开(公告)日：2006-11-07
申请号：US11104209
申请日：2005-04-11
申请人： Xiaodong Che , Wen-Chien David Hsiao , Yansheng Luo , Xiaoyu Sui , Samuel Wei-san Yuan
发明人： Xiaodong Che , Wen-Chien David Hsiao , Yansheng Luo , Xiaoyu Sui , Samuel Wei-san 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。

10. 发明申请

US20110128646A1 SYNCHRONIZED REWRITING OF DATA 有权
标题翻译：数据同步化
公开(公告)号：US20110128646A1
公开(公告)日：2011-06-02
申请号：US12629437
申请日：2009-12-02
申请人： Michael Alex , Xiaodong Che , Zhen Jin , Michael Paul Salo
发明人： Michael Alex , Xiaodong Che , Zhen Jin , Michael Paul Salo
IPC分类号： G11B21/02
CPC分类号： G11B19/041 , G11B5/02 , G11B20/10009 , G11B20/10398 , G11B2005/001 , G11B2020/10898 , G11B2220/2516
摘要： A hard disk drive (HDD) including a magnetic disk, the magnetic disk including a data track. The HDD also includes a synchronized rewrite controller for synchronizing a plurality of rewrites of a data pattern on a location of the track of the magnetic disk and the HDD includes a write head controlled by the synchronized rewrite controller for writing the data pattern on the location of the data track and rewriting the data pattern a plurality of times on the location in synchronization with a prior writing of the data pattern on the data track.
摘要翻译：包括磁盘的硬盘驱动器（HDD），磁盘包括数据磁道。 HDD还包括同步重写控制器，用于在磁盘的轨道的位置上同步数据模式的多个重写，并且HDD包括由同步重写控制器控制的写入头，用于将数据模式写入到数据跟踪数据跟踪并重写数据模式多次在位置上与数据轨迹上的数据模式的先前写入同步。

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