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31. 发明授权

US07952830B2 Method and apparatus for estimating flying height in a hard disk drive 失效
标题翻译：用于估计硬盘驱动器中的飞行高度的方法和装置
公开(公告)号：US07952830B2
公开(公告)日：2011-05-31
申请号：US12478716
申请日：2009-06-04
申请人： SungChang Lee , Yawshing Tang , Mike Suk
发明人： SungChang Lee , Yawshing Tang , Mike Suk
IPC分类号： G11B21/02
CPC分类号： G11B5/6029 , G11B5/40 , G11B5/455 , G11B5/6005 , G11B5/6064
摘要： This application discloses a hard disk drive and operates it based upon using a first and third harmonic amplitude generated from reading a repeated pattern of bits written to a track on a disk surface. Both amplitudes are used to create a first data set and the third harmonic amplitude is used as a single tone to create a second data set. A conversion factor between these two is determine, which may be used to convert the first data set under other conditions into a temperature insensitive table of the electrical stimulus of a vertical micro-actuator and the flying height change of the slider. The hard disk drive may be calibrated during manufacture and/or in the field.
摘要翻译：本申请公开了一种硬盘驱动器，并且基于使用从读取写入盘表面上的轨道的重复比特模式产生的第一和第三谐波幅度来操作它。两个幅度用于创建第一数据集，并且三次谐波幅度用作单音以创建第二数据集。确定这两者之间的转换因子，其可以用于将其他条件下的第一数据集转换成垂直微致动器的电刺激的温度不敏感表和滑块的飞行高度变化。硬盘驱动器可能在制造和/或现场进行校准。

32. 发明申请

US20090262451A1 INCREASED FORMAT EFFICIENCY USING DISK SYNCHRONIZED WRITE 有权
标题翻译：使用磁盘同步写入增加格式效率
公开(公告)号：US20090262451A1
公开(公告)日：2009-10-22
申请号：US12481297
申请日：2009-06-09
申请人： Yawshing Tang
发明人： Yawshing Tang
IPC分类号： G11B21/02
CPC分类号： G11B20/1403 , G11B20/10425 , G11B2020/1284 , G11B2020/1287 , G11B2220/2516
摘要： A hard disk drive with a disk that has a plurality of data fields. Each data field includes a sync field and a plurality of sync marks. Data is written onto the disk in accordance with a write clock. The write clock is generated and synchronized by the sync field and the sync marks. The sync marks are dispersed throughout the data field so that the write clock is resynchronized as data is written onto the field.
摘要翻译：具有磁盘的具有多个数据字段的硬盘驱动器。每个数据字段包括同步字段和多个同步标记。数据根据写入时钟写入磁盘。写时钟由同步字段和同步标记产生并同步。同步标记分散在整个数据字段中，以便当数据写入字段时，写入时钟被重新同步。

33. 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.

34. 发明申请

US20090091854A1 Write timing system for hard disk drives with bit patterned media 有权
标题翻译：为带有位图形媒体的硬盘驱动器写入定时系统
公开(公告)号：US20090091854A1
公开(公告)日：2009-04-09
申请号：US11973814
申请日：2007-10-09
申请人： Yawshing Tang
发明人： Yawshing Tang
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B5/746
摘要： A hard disk drive with a patterned disk that has a plurality of data fields. Each data field includes a sync field and a plurality of sync marks. Data is written onto the patterned disk in accordance with a write clock. The write clock is generated and synchronized by the sync field and the sync marks. The sync marks are dispersed throughout the data field so that the write clock is resynchronized as data is written onto the field.
摘要翻译：具有图案化磁盘的具有多个数据字段的硬盘驱动器。每个数据字段包括同步字段和多个同步标记。数据根据写时钟写入图形化的盘上。写时钟由同步字段和同步标记产生并同步。同步标记分散在整个数据字段中，以便当数据写入字段时，写入时钟被重新同步。

35. 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。

36. 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。

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