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71. 发明授权

US08077814B2 Preamble acquisition without second order timing loops 有权
标题翻译：前导采集无二阶定时循环
公开(公告)号：US08077814B2
公开(公告)日：2011-12-13
申请号：US12960043
申请日：2010-12-03
申请人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
发明人： Haitao Xia , Shih-Ming Shih , Ryan Yu , Marcus Marrow , Kai Keung Chan
IPC分类号： H04L27/06
CPC分类号： H04L7/08
摘要： A clock is adjusted by obtaining a first plurality of samples and a second plurality of samples associated with a preamble portion of a data packet. The first plurality of samples and the second plurality of samples are sampled using a clock. A first intermediate value is determined based at least in part on the first plurality of samples and a second intermediate value is determined based at least in part on the second plurality of samples. An ending value associated with an end of the preamble portion is determined based at least in part on the first intermediate value and the second intermediate value. The clock is adjusted based at least in part on the ending value without use of a second order timing loop.
摘要翻译：通过获得与数据分组的前导部分相关联的第一多个样本和第二多个样本来调整时钟。使用时钟对第一多个采样和第二多个采样进行采样。至少部分地基于第一多个样本确定第一中间值，并且至少部分地基于第二多个样本来确定第二中间值。至少部分地基于第一中间值和第二中间值来确定与前导码部分的结尾相关联的结束值。时钟至少部分地基于结束值进行调整，而不使用二阶定时循环。

72. 发明授权

US08077571B1 Storage media defect detection 有权
标题翻译：存储介质缺陷检测
公开(公告)号：US08077571B1
公开(公告)日：2011-12-13
申请号：US11999505
申请日：2007-12-05
申请人： Haitao Xia , Yenyu Hsieh , Bac Pham
发明人： Haitao Xia , Yenyu Hsieh , Bac Pham
IPC分类号： G11B20/18
CPC分类号： G11B20/18 , G11B20/10037 , G11B20/10222 , G11B27/36 , G11B2020/1826 , G11B2220/2516
摘要： Detecting a defect on a storage device is disclosed. Detecting includes receiving a signal read from a storage device, sampling the signal to obtain a set of signal samples, wherein the sampling starts at an arbitrary time, computing a defect value for a defect type using the set of signal samples, comparing the defect value with a threshold associated with the defect type, determining whether there is a defect of the defect type based at least in part on the comparison, and in the event that a defect is detected, outputting an indication associated with the defect.
摘要翻译：公开了检测存储设备上的缺陷。检测包括接收从存储设备读取的信号，对信号进行采样以获得一组信号样本，其中采样在任意时间开始，使用该组信号样本计算缺陷类型的缺陷值，比较缺陷值具有与缺陷类型相关联的阈值，至少部分地基于比较来确定是否存在缺陷类型的缺陷，并且在检测到缺陷的情况下，输出与缺陷相关联的指示。

73. 发明授权

US08063802B1 Filter for adjusting ADC samples 有权
标题翻译：用于调整ADC样本的滤波器
公开(公告)号：US08063802B1
公开(公告)日：2011-11-22
申请号：US12661994
申请日：2010-03-26
申请人： Haitao Xia , Yenyu Hsieh
发明人： Haitao Xia , Yenyu Hsieh
IPC分类号： H03M1/06
CPC分类号： H03M1/0836 , H03M1/12
摘要： Phase is adjusted by using an analog to digital converter to convert an analog signal to a plurality of digital samples. A filter is used to filter the plurality of digital samples to obtain a plurality of phase adjusted samples.
摘要翻译：通过使用模数转换器来调整相位，以将模拟信号转换成多个数字样本。滤波器用于对多个数字样本进行滤波以获得多个相位调整样本。

74. 发明授权

US08904070B2 Systems and methods for digital MRA compensation 有权
标题翻译：数字MRA补偿的系统和方法
公开(公告)号：US08904070B2
公开(公告)日：2014-12-02
申请号：US13362466
申请日：2012-01-31
申请人： Nayak Ratnakar Aravind , Yu Liao , Haitao Xia
发明人： Nayak Ratnakar Aravind , Yu Liao , Haitao Xia
IPC分类号： G06F13/12 , G06F13/38 , H03M1/12
CPC分类号： H03M1/12 , G06F13/385
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an analog to digital converter circuit, and a magneto-resistive adjustment circuit. The analog to digital converter circuit is operable to convert an input signal into corresponding digital samples. The magneto-resistive adjustment circuit is operable to reduce signal asymmetry in the digital samples due to sensing by a magneto-resistive head to yield a corrected output.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。例如，讨论了包括：模数转换器电路和磁阻调节电路的数据处理系统。模数转换器电路可操作以将输入信号转换成对应的数字采样。磁阻调节电路可操作以由于由磁阻头感测而产生校正输出，从而减少数字采样中的信号不对称性。

75. 发明授权

US08854750B2 Saturation-based loop control assistance 有权
标题翻译：基于饱和度的回路控制辅助
公开(公告)号：US08854750B2
公开(公告)日：2014-10-07
申请号：US13562140
申请日：2012-07-30
申请人： Haotian Zhang , Haitao Xia
发明人： Haotian Zhang , Haitao Xia
IPC分类号： G11B5/02
CPC分类号： H03G3/3052 , G11B20/10009
摘要： The present inventions are related to systems and methods for data processing, and more particularly to data processing using distortion-correction loops with saturation-based assistance.
摘要翻译：本发明涉及用于数据处理的系统和方法，更具体地涉及使用基于饱和的协助的失真校正循环的数据处理。

76. 发明授权

US08824087B2 Zero gain start bias estimation 有权
标题翻译：零增益启动偏差估计
公开(公告)号：US08824087B2
公开(公告)日：2014-09-02
申请号：US13564763
申请日：2012-08-02
申请人： Haotian Zhang , Scott Michael Dziak , Haitao Xia
发明人： Haotian Zhang , Scott Michael Dziak , Haitao Xia
IPC分类号： G11B5/03
CPC分类号： G11B5/09 , G11B2005/0008
摘要： A method and system for estimating a zero gain start (ZGS) bias in a read channel is disclosed. The method may include: receiving preamble samples within a fixed-length window selected for ZGS calculation; calculating an energy associated with a 2T frequency in the preamble samples; calculating an energy associated with non-2T frequencies in the preamble samples; and calculating the ZGS bias based on the energy associated with the 2T frequency in the preamble samples and the energy associated with non-2T frequencies in the preamble samples.
摘要翻译：公开了一种用于估计读取通道中的零增益开始（ZGS）偏置的方法和系统。该方法可以包括：在为ZGS计算选择的固定长度窗口内接收前导码样本; 计算在前导码样本中与2T频率相关联的能量; 计算在前导码样本中与非2T频率相关联的能量; 并且基于在前导码样本中与2T频率相关联的能量和与前同步码样本中的非2T频率相关联的能量来计算ZGS偏差。

77. 发明授权

US08681444B2 Multi-zone servo processor 有权
标题翻译：多区域伺服处理器
公开(公告)号：US08681444B2
公开(公告)日：2014-03-25
申请号：US13491135
申请日：2012-06-07
申请人： Xun Zhang , Haitao Xia , Dahua Qin
发明人： Xun Zhang , Haitao Xia , Dahua Qin
IPC分类号： G11B5/09 , G11B5/596
CPC分类号： G11B5/59644 , G11B20/10268
摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes a data stream processor operable to generate a number of data streams at different frequencies based on an input data stream, a number of servo preamble detectors each operable to process a different one of the data streams to detect a servo preamble, a selector operable to output one of the data streams in which the servo preamble was detected as a winning data stream, and a pattern detector operable to detect a pattern in the winning data stream.
摘要翻译：本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。例如，公开了一种用于确定传感器位置的装置，其包括可操作以基于输入数据流生成不同频率的多个数据流的数据流处理器，多个伺服前置码检测器，每个可操作以处理不同的用于检测伺服前导码的数据流，可操作以输出其中检测到伺服前导码的数据流中的一个作为获胜数据流的选择器，以及用于检测获胜数据流中的模式的模式检测器。

78. 发明申请

US20130329312A1 Multi-Zone Servo Processor 有权
标题翻译：多区域伺服处理器
公开(公告)号：US20130329312A1
公开(公告)日：2013-12-12
申请号：US13491135
申请日：2012-06-07
申请人： Xun Zhang , Haitao Xia , Dahua Qin
发明人： Xun Zhang , Haitao Xia , Dahua Qin
IPC分类号： G11B5/09
CPC分类号： G11B5/59644 , G11B20/10268
摘要： The present inventions are related to systems and methods for transferring information to and from a storage medium, and more particularly to systems and methods for positioning a sensor in relation to a storage medium. For example, an apparatus for determining a sensor position is disclosed that includes a data stream processor operable to generate a number of data streams at different frequencies based on an input data stream, a number of servo preamble detectors each operable to process a different one of the data streams to detect a servo preamble, a selector operable to output one of the data streams in which the servo preamble was detected as a winning data stream, and a pattern detector operable to detect a pattern in the winning data stream.
摘要翻译：本发明涉及用于将信息传送到存储介质和从存储介质传送信息的系统和方法，更具体地涉及用于相对于存储介质定位传感器的系统和方法。例如，公开了一种用于确定传感器位置的装置，其包括可操作以基于输入数据流生成不同频率的多个数据流的数据流处理器，多个伺服前置码检测器，每个可操作以处理不同的用于检测伺服前导码的数据流，可操作以输出其中检测到伺服前导码的数据流中的一个作为获胜数据流的选择器，以及用于检测获胜数据流中的模式的模式检测器。

79. 发明申请

US20130091397A1 Systems and Methods for Parity Sharing Data Processing 有权
标题翻译：系统与方法的平等共享数据处理
公开(公告)号：US20130091397A1
公开(公告)日：2013-04-11
申请号：US13269832
申请日：2011-10-10
申请人： Haitao Xia , Shaohua Yan , Johnson Yen
发明人： Haitao Xia , Shaohua Yan , Johnson Yen
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/1102 , G11B20/1833 , G11B2020/185 , G11B2220/2516 , H03M13/2942 , H03M13/3761 , H03M13/6331 , H03M13/6343 , H03M13/6502
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is disclosed that includes: a data detector circuit, a low density parity check data decoder circuit, and a processing circuit. The processing circuit is operable to: reconstitute a second encoded sub-codeword from a combination of data including the first encoded sub-codeword and the composite sub-codeword; and correct an error in one of the first encoded sub-codeword and the second encoded sub-codeword based at least in part on a combination of the first encoded sub-codeword, the second encoded sub-codeword, and the composite sub-codeword.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。例如，公开了一种数据处理系统，其包括：数据检测器电路，低密度奇偶校验数据解码器电路和处理电路。所述处理电路可操作用于：从包括所述第一编码子码字和所述复合子码字的数据的组合重构第二编码子码字; 以及至少部分地基于所述第一编码子码字，所述第二编码子码字和所述合成子码字的组合来校正所述第一编码子码字和所述第二编码子码字之一中的错误。

80. 发明授权

US08913339B2 Systems and methods for adaptive gain control 有权
标题翻译：自适应增益控制的系统和方法
公开(公告)号：US08913339B2
公开(公告)日：2014-12-16
申请号：US13346556
申请日：2012-01-09
申请人： Haitao Xia , Yu Liao
发明人： Haitao Xia , Yu Liao
IPC分类号： G11B5/035
CPC分类号： H03M1/185 , G11B20/10009
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, a data processing system is discussed that includes: an analog to digital converter circuit, a data detector circuit, a filter circuit, an error generation circuit, and a target parameter adaptation circuit. The analog to digital converter circuit converts an analog input into corresponding digital samples. The data detector circuit applies a data detection algorithm to a data set derived from the digital samples to yield a detected output. The filter circuit convolves the detected output with a target parameter to yield a target output. The error generation circuit calculates an error value based on the digital samples and the target output. The target parameter adaptation circuit updates the target parameter based at least in part on the error value.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。例如，讨论了一种数据处理系统，其包括：模数转换器电路，数据检测器电路，滤波器电路，误差产生电路和目标参数自适应电路。模数转换器电路将模拟输入转换为相应的数字采样。数据检测器电路将数据检测算法应用于从数字样本导出的数据集，以产生检测到的输出。滤波器电路将检测到的输出与目标参数进行卷积以产生目标输出。误差产生电路根据数字采样和目标输出来计算误差值。目标参数自适应电路至少部分地基于误差值更新目标参数。

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