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21. 发明授权

US07612959B2 Method for correcting added and lost bits in a hard disk drive using error correction codes 失效
标题翻译：使用纠错码校正硬盘驱动器中添加和丢失位的方法
公开(公告)号：US07612959B2
公开(公告)日：2009-11-03
申请号：US11600669
申请日：2006-11-15
申请人： Yawshing Tang , Carl Xiaodong Che
发明人： Yawshing Tang , Carl Xiaodong Che
IPC分类号： G11B20/14
CPC分类号： G11B20/1803
摘要： A hard disk drive with an encoder that writes data onto a disk in accordance with a plurality of first codes. Each code contains a plurality of digital bits. The first codes are selected so that if a bit is added or dropped during a write or read process the resulting bitstream can only be one of the selected first codes. This allows the bitstream to be accurately decoded to detect and correct for the added/dropped bit.
摘要翻译：具有编码器的硬盘驱动器，其根据多个第一代码将数据写入盘。每个代码包含多个数字位。选择第一代码，使得如果在写入或读取处理期间添加或丢弃位，则所得到的比特流只能是所选择的第一代码之一。这允许比特流被精确地解码以检测和校正添加/丢弃的比特。

22. 发明申请

US20090251817A1 Data error recovery using voting on multiple retrials 失效
标题翻译：数据错误恢复使用多次重试投票
公开(公告)号：US20090251817A1
公开(公告)日：2009-10-08
申请号：US12082150
申请日：2008-04-08
申请人： Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
发明人： Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
IPC分类号： G11B5/17
CPC分类号： G11B5/09 , G11B20/18 , G11B2020/183 , G11B2220/2516
摘要： A hard disk drive with a disk that has a plurality of data bits. The drive includes a circuit that reads each data bit n times and selects a value for the bit based on the most frequent occurrence of one of a plurality of values. This process provides a voting technique that enhances the quality of accurately captured data.
摘要翻译：具有磁盘的具有多个数据位的硬盘驱动器。驱动器包括读取每个数据位n次的电路，并且基于多个值中的一个值的最频繁出现来选择位的值。该过程提供了一种提高精确捕获数据质量的投票技术。

23. 发明申请

US20080316639A1 Large data block written on overlapping tracks in a hard disk drive 有权
标题翻译：写在硬盘驱动器中的重叠轨道上的大数据块
公开(公告)号：US20080316639A1
公开(公告)日：2008-12-25
申请号：US11820707
申请日：2007-06-19
申请人： Yawshing Tang , Carl Xiaodong Che
发明人： Yawshing Tang , Carl Xiaodong Che
IPC分类号： G11B5/596
CPC分类号： G11B5/596 , G11B5/012 , G11B20/1262 , G11B2020/10537 , G11B2020/1292 , G11B2220/2516
摘要： A hard disk drive with a disk that includes a first group of tracks and a second group of tracks. The second group of tracks are used to write large blocks of data. For example, data in the second group may be video or audio. The second group of tracks has a higher track density than the first group of tracks. The large data block is written sequentially in the second group of tracks so that there is only one adjacent track write within the group. Using only one adjacent track write allows the tracks within the second group to be overlapped to increase track density.
摘要翻译：具有包括第一组轨道和第二组轨道的盘的硬盘驱动器。第二组轨道用于写入大块数据。例如，第二组中的数据可以是视频或音频。第二组轨道具有比第一组轨道更高的轨道密度。大数据块被顺序地写入第二组轨道，使得在该组内只有一个相邻轨迹写入。仅使用一个相邻轨道写入允许第二组内的轨道重叠以增加轨道密度。

24. 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。

25. 发明授权

US07826166B2 Data pattern for fly height measurement 失效
标题翻译：飞高测量数据模式
公开(公告)号：US07826166B2
公开(公告)日：2010-11-02
申请号：US12215441
申请日：2008-06-27
申请人： Yawshing Tang , Peng Luo , Na-Young Kim
发明人： Yawshing Tang , Peng Luo , Na-Young Kim
IPC分类号： G11B21/02 , G11B27/36
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6064
摘要： A hard disk drive that includes a disk and a head that is separated from the disk by a flying height. The disk drive also includes a circuit that determines the flying height from an equation that uses a third harmonic of a read signal. The read signal includes a data pattern that is a product of a first data pattern and a second data pattern. The resultant data pattern provides a third harmonic with a relatively high magnitude and improved signal to noise ratio.
摘要翻译：一个硬盘驱动器，包括一个磁盘和一个与磁盘分开的飞行高度的磁头。磁盘驱动器还包括从使用读取信号的三次谐波的等式确定飞行高度的电路。读取信号包括作为第一数据模式和第二数据模式的乘积的数据模式。所得到的数据模式提供具有相对高的幅度和改善的信噪比的三次谐波。

26. 发明申请

US20100128399A1 HARMONIC MEASUREMENT FOR HEAD-DISK SPACING CONTROL USING USER DATA 失效
标题翻译：使用用户数据进行头盘间距控制的谐波测量
公开(公告)号：US20100128399A1
公开(公告)日：2010-05-27
申请号：US12323367
申请日：2008-11-25
申请人： Carl Xiaodong Che , Yawshing Tang , Haejung Lee
发明人： Carl Xiaodong Che , Yawshing Tang , Haejung Lee
IPC分类号： G11B21/24
CPC分类号： G11B5/6029 , G11B5/5534 , G11B5/6064 , G11B5/607
摘要： A hard disk drive that determines a flying height from a ratio of a first harmonic transfer function and a third harmonic transfer function. The transfer functions can be determined from a response to an impulse function. The impulse function (also known as an impulse response) can be a playback waveform de-convolved by channel data sequence. Any change in the ratio of the first and third harmonic transfer functions corresponds to a change in the flying height. The disk drive may utilize the transfer function ratios in a feedback routine to control the flying height.
摘要翻译：硬盘驱动器，从一次谐波传递函数和三次谐波传递函数的比率确定飞行高度。传递函数可以根据对脉冲函数的响应来确定。脉冲函数（也称为脉冲响应）可以是通过通道数据序列去卷积的重放波形。第一和第三谐波传递函数的比率的任何变化对应于飞行高度的变化。磁盘驱动器可以利用反馈程序中的传递函数比来控制飞行高度。

27. 发明申请

US20100128380A1 SES ASSISTED WRITE FLY HEIGHT MONITOR AND CONTROL 审中-公开
标题翻译： SES辅助写入飞行高度监控和控制
公开(公告)号：US20100128380A1
公开(公告)日：2010-05-27
申请号：US12323047
申请日：2008-11-25
申请人： Yawshing Tang , Carl Xiaodong Che
发明人： Yawshing Tang , Carl Xiaodong Che
IPC分类号： G11B21/02
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6064 , G11B19/046
摘要： A hard disk drive that includes a disk, and a head that is separated from the disk by a flying height. The disk drive also includes a circuit that determines the flying height from a signal read during a write operation of the drive. The circuit performs a calibration routine to determine a temperature dependent variable of the signal to offset any temperature effects on the signal used to determine the flying height. The calibration routine can be performed using a spacing error signal (“SES”) generated by the drive.
摘要翻译：包含磁盘的硬盘驱动器和与磁盘分开的飞行高度的磁头。磁盘驱动器还包括一个电路，其确定在驱动器的写入操作期间读取的信号的飞行高度。电路执行校准程序，以确定信号的温度变化，以抵消任何温度对用于确定飞行高度的信号的影响。可以使用由驱动器产生的间隔误差信号（“SES”）来执行校准程序。

28. 发明申请

US20090323211A1 New data pattern for fly height measurement 失效
标题翻译：飞行高度测量的新数据模式
公开(公告)号：US20090323211A1
公开(公告)日：2009-12-31
申请号：US12215441
申请日：2008-06-27
申请人： Yawshing Tang , Peng Luo , Na-Young Kim
发明人： Yawshing Tang , Peng Luo , Na-Young Kim
IPC分类号： G11B27/36
CPC分类号： G11B5/6029 , G11B5/6005 , G11B5/6064
摘要： A hard disk drive that includes a disk and a head that is separated from the disk by a flying height. The disk drive also includes a circuit that determines the flying height from an equation that uses a third harmonic of a read signal. The read signal includes a data pattern that is a product of a first data pattern and a second data pattern. The resultant data pattern provides a third harmonic with a relatively high magnitude and improved signal to noise ratio.
摘要翻译：一个硬盘驱动器，包括一个磁盘和一个与磁盘分开的飞行高度的磁头。磁盘驱动器还包括从使用读取信号的三次谐波的等式确定飞行高度的电路。读取信号包括作为第一数据模式和第二数据模式的乘积的数据模式。所得到的数据模式提供具有相对高的幅度和改善的信噪比的三次谐波。

29. 发明申请

US20090273856A1 Timing insensitive method and apparatus for spectral analysis in a disk recording system 失效
标题翻译：磁盘记录系统中光谱分析的时序不灵敏的方法和装置
公开(公告)号：US20090273856A1
公开(公告)日：2009-11-05
申请号：US12150810
申请日：2008-04-30
申请人： Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
发明人： Yawshing Tang , Carl Xiaodong Che , Na-Young Kim
IPC分类号： G11B5/09
CPC分类号： G11B5/02 , G11B5/6005 , G11B5/6029 , G11B2005/0018
摘要： A hard disk drive that includes a disk that contains at least one signal and a head that is coupled to the disk. The disk drive also contains a circuit that includes a data sampler that-generates a plurality of data samples from the signal, a harmonic sensor coupled to the data sampler and a spectral power accumulator coupled to the harmonic sensor. The harmonic sensor accumulates the data samples. The circuit includes a window generator that determines a window length of the data samples accumulated by the harmonic sensor. The spectral power accumulator accumulates the windows of sample data accumulated by the harmonic sensor. The sample data accumulated by the spectral power accumulator can be accessed by a processor that performs a spectral analysis of the data.
摘要翻译：一个硬盘驱动器，其中包含一个至少包含一个信号的磁盘和一个耦合到磁盘的磁头。磁盘驱动器还包含一个电路，该电路包括数据采样器，该数据采样器从该信号产生多个数据样本，耦合到数据采样器的谐波传感器和耦合到谐波传感器的频谱功率累加器。谐波传感器累积数据样本。该电路包括窗口发生器，其确定由谐波传感器累积的数据样本的窗口长度。光谱功率累加器累积由谐波传感器累积的采样数据的窗口。由频谱功率累加器积累的采样数据可以由执行数据的频谱分析的处理器来访问。

30. 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。

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