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71. 发明申请

US20120236428A1 Systems and Methods for Sync Mark Detection 有权
标题翻译：用于同步标记检测的系统和方法
公开(公告)号：US20120236428A1
公开(公告)日：2012-09-20
申请号：US13050048
申请日：2011-03-17
申请人： Haitao Xia , Shaohua Yang , George Mathew
发明人： Haitao Xia , Shaohua Yang , George Mathew
IPC分类号： G11B5/09 , G01R25/00 , G06F19/00
CPC分类号： G11B5/59616
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes an equalizer circuit and a data detection circuit. The equalizer circuit is operable to filter a series of samples based at least in part on a filter coefficient and to provide a corresponding series of filtered samples. The data detection circuit includes: a core data detector circuit and a coefficient determination circuit. The core data detector circuit is operable to perform a data detection process on the series of filtered samples and to provide a most likely path and a next most likely path. The coefficient determination circuit operable to update the filter coefficient based at least in part on the most likely path and the next most likely path.
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。作为示例，公开了包括均衡器电路和数据检测电路的数据处理电路。均衡器电路可操作以至少部分地基于滤波器系数对一系列样本进行滤波，并提供相应的一系列滤波样本。数据检测电路包括：核心数据检测器电路和系数确定电路。核心数据检测器电路可操作以对一系列经滤波的样本执行数据检测处理，并提供最可能的路径和下一个最可能的路径。系数确定电路可操作以至少部分地基于最可能的路径和下一个最可能的路径来更新滤波器系数。

72. 发明申请

US20110205653A1 Systems and Methods for Data Recovery 审中-公开
标题翻译：数据恢复的系统和方法
公开(公告)号：US20110205653A1
公开(公告)日：2011-08-25
申请号：US12712136
申请日：2010-02-24
申请人： George Mathew , Shaohua Yang , Haitao Xia , Nenad Miladinovic
发明人： George Mathew , Shaohua Yang , Haitao Xia , Nenad Miladinovic
IPC分类号： G11B27/36
CPC分类号： G11B20/1816 , G11B5/59616 , G11B2020/1287 , G11B2020/1476 , G11B2020/185 , H03M13/33
摘要： Various embodiments of the present invention provide systems and methods for identifying a reproducible location on a storage medium. As an example, a circuit is described that include a media defect detector and an anchor fixing circuit. The media defect detector is operable to identify a media defect, and the anchor fixing circuit is operable to identify a location relative to the media defect. The location is reproducible.
摘要翻译：本发明的各种实施例提供用于识别存储介质上的可再现位置的系统和方法。作为示例，描述了包括介质缺陷检测器和锚固定电路的电路。介质缺陷检测器可操作以识别介质缺陷，并且锚固定电路可操作以识别相对于介质缺陷的位置。该位置是可重现的。

73. 发明申请

US20090268848A1 Systems and Methods for Filter Based Media Defect Detection 有权
标题翻译：基于滤波器的介质缺陷检测系统与方法
公开(公告)号：US20090268848A1
公开(公告)日：2009-10-29
申请号：US12111268
申请日：2008-04-29
申请人： Weijun Tan , Shaohua Yang , George Mathew , Du Li
发明人： Weijun Tan , Shaohua Yang , George Mathew , Du Li
IPC分类号： H04L27/00
CPC分类号： H04L25/067 , G01R31/31932
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. For example, a data receiving system is disclosed that includes a data signal provided from a medium that may include a defective portion. An absolute value circuit receives the data signal and provides an output corresponding to an absolute value of the data signal. The output corresponding to the absolute value of the data signal is input to a filter that filters it and provides a filtered output. In some cases, the filter is a digital filter operable to integrate the absolute value of the data signal. A comparator receives the output from the filter and compares it with a threshold value. The result of the comparison indicates a defect status of the medium.
摘要翻译：本发明的各种实施例提供了用于介质缺陷检测的系统和方法。例如，公开了一种数据接收系统，其包括从可能包括缺陷部分的介质提供的数据信号。绝对值电路接收数据信号并提供对应于数据信号的绝对值的输出。与数据信号的绝对值相对应的输出被输入到过滤器并提供滤波输出的滤波器。在某些情况下，滤波器是可以对数据信号的绝对值进行积分的数字滤波器。比较器从滤波器接收输出并将其与阈值进行比较。比较结果表明介质的缺陷状态。

74. 发明授权

US08121224B2 Systems and methods for filter based media defect detection 有权
标题翻译：基于过滤器的介质缺陷检测的系统和方法
公开(公告)号：US08121224B2
公开(公告)日：2012-02-21
申请号：US12111268
申请日：2008-04-29
申请人： Weijun Tan , Shaohua Yang , George Mathew , Du Li
发明人： Weijun Tan , Shaohua Yang , George Mathew , Du Li
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , G01R31/31932
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. For example, a data receiving system is disclosed that includes a data signal provided from a medium that may include a defective portion. An absolute value circuit receives the data signal and provides an output corresponding to an absolute value of the data signal. The output corresponding to the absolute value of the data signal is input to a filter that filters it and provides a filtered output. In some cases, the filter is a digital filter operable to integrate the absolute value of the data signal. A comparator receives the output from the filter and compares it with a threshold value. The result of the comparison indicates a defect status of the medium.
摘要翻译：本发明的各种实施例提供了用于介质缺陷检测的系统和方法。例如，公开了一种数据接收系统，其包括从可能包括缺陷部分的介质提供的数据信号。绝对值电路接收数据信号并提供对应于数据信号的绝对值的输出。与数据信号的绝对值相对应的输出被输入到过滤器并提供滤波输出的滤波器。在某些情况下，滤波器是可以对数据信号的绝对值进行积分的数字滤波器。比较器从滤波器接收输出并将其与阈值进行比较。比较结果表明介质的缺陷状态。

75. 发明申请

US20110209026A1 Systems and Methods for Data Recovery Using Enhanced Sync Mark Location 有权
标题翻译：使用增强型同步标记位置进行数据恢复的系统和方法
公开(公告)号：US20110209026A1
公开(公告)日：2011-08-25
申请号：US12887317
申请日：2010-09-21
申请人： Haitao Xia , Shaohua Yang , George Mathew
发明人： Haitao Xia , Shaohua Yang , George Mathew
IPC分类号： G06F17/30 , H03M13/05 , G06F11/10
CPC分类号： G11B20/1403 , G11B5/59616 , G11B20/1217 , G11B2020/1287 , G11B2020/1294 , G11B2020/1476 , G11B2020/185 , H03M13/33
摘要： Various embodiments of the present invention provide systems and methods for identifying a reproducible location on a storage medium. As an example, a circuit is discussed that includes a data storage circuit, a pattern comparison circuit, and a threshold comparison circuit. The data storage circuit is operable to store a first set of data samples corresponding to a region of interest. The pattern comparison circuit is operable to compare a subset of the first set of data samples with a subset of a second set of data samples corresponding to the region of interest. The pattern comparison circuit is operable to yield a match value corresponding to a degree of similarity between the first set of data samples with the subset of a second set of data samples. The threshold comparison circuit is operable to indicate an anchor point based at least in part on the magnitude of the match value relative to a threshold value.
摘要翻译：本发明的各种实施例提供用于识别存储介质上的可再现位置的系统和方法。作为示例，讨论了包括数据存储电路，模式比较电路和阈值比较电路的电路。数据存储电路可操作以存储对应于感兴趣区域的第一组数据样本。模式比较电路可操作以将第一组数据样本的子集与对应于感兴趣区域的第二组数据样本的子集进行比较。模式比较电路可操作以产生与第一组数据样本与第二组数据样本的子集之间的相似度对应的匹配值。阈值比较电路可操作以至少部分地基于相对于阈值的匹配值的大小来指示锚定点。

76. 发明授权

US08749908B2 Systems and methods for sync mark detection 有权
标题翻译：用于同步标记检测的系统和方法
公开(公告)号：US08749908B2
公开(公告)日：2014-06-10
申请号：US13050048
申请日：2011-03-17
申请人： Haitao Xia , Shaohua Yang , George Mathew
发明人： Haitao Xia , Shaohua Yang , George Mathew
IPC分类号： G11B5/09
CPC分类号： G11B5/59616
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is disclosed that includes an equalizer circuit and a data detection circuit. The equalizer circuit is operable to filter a series of samples based at least in part on a filter coefficient and to provide a corresponding series of filtered samples. The data detection circuit includes: a core data detector circuit and a coefficient determination circuit. The core data detector circuit is operable to perform a data detection process on the series of filtered samples and to provide a most likely path and a next most likely path. The coefficient determination circuit operable to update the filter coefficient based at least in part on the most likely path and the next most likely path.
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。作为示例，公开了包括均衡器电路和数据检测电路的数据处理电路。均衡器电路可操作以至少部分地基于滤波器系数对一系列样本进行滤波，并提供相应的一系列滤波样本。数据检测电路包括：核心数据检测器电路和系数确定电路。核心数据检测器电路可操作以对一系列经滤波的样本执行数据检测处理，并提供最可能的路径和下一个最可能的路径。系数确定电路可操作以至少部分地基于最可能的路径和下一个最可能的路径来更新滤波器系数。

77. 发明授权

US08929017B2 Systems and methods for SNR measurement using equalized data 有权
标题翻译：使用均衡数据进行SNR测量的系统和方法
公开(公告)号：US08929017B2
公开(公告)日：2015-01-06
申请号：US13316953
申请日：2011-12-12
申请人： Haitao Xia , Ming Jin , Dahua Qin , Shaohua Yang
发明人： Haitao Xia , Ming Jin , Dahua Qin , Shaohua Yang
IPC分类号： G11B5/035 , G11B5/596 , G11B20/10
CPC分类号： G11B5/59605 , G11B5/035 , G11B5/09 , G11B5/59622 , G11B20/10046 , G11B2220/415
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 equalizer circuit, a signal to noise ratio calculation circuit, and a parameter adjustment circuit. The equalizer circuit is operable to equalize a data input to yield an equalized output. The signal to noise ratio calculation circuit is operable to calculate a signal to noise ratio of the equalized output based at least in part on a noise power derived from the equalized output. The parameter adjustment circuit is operable to adjust a parameter based at least in part on the signal to noise ratio.
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，讨论了包括均衡器电路，信噪比计算电路和参数调整电路的数据处理系统。均衡器电路可操作以均衡数据输入以产生均衡的输出。信噪比计算电路可用于至少部分地基于从均衡输出得到的噪声功率来计算均衡输出的信噪比。参数调整电路可操作以至少部分地基于信噪比来调整参数。

78. 发明授权

US08862961B2 LDPC decoder with dynamic graph modification 有权
标题翻译：具有动态图修改的LDPC解码器
公开(公告)号：US08862961B2
公开(公告)日：2014-10-14
申请号：US13622284
申请日：2012-09-18
申请人： Fan Zhang , Shaohua Yang , Ming Jin
发明人： Fan Zhang , Shaohua Yang , Ming Jin
IPC分类号： H03M13/00
CPC分类号： H03M13/6343 , H03M13/1111 , H03M13/1117 , H03M13/1142 , H03M13/1171 , H03M13/3707 , H03M13/616 , H03M13/6331
摘要： The present inventions are related to systems and methods for an LDPC decoder with dynamic Tanner graph modification, and in particular, to a non-erasure channel LDPC decoder that implements a probabilistic approach to Tanner graph modification.
摘要翻译：本发明涉及具有动态Tanner图修改的LDPC解码器的系统和方法，特别涉及实现Tanner图修改的概率方法的非擦除信道LDPC解码器。

79. 发明申请

US20130148233A1 Systems and Methods for SNR Measurement Using Equalized Data 有权
标题翻译：使用均衡数据进行SNR测量的系统和方法
公开(公告)号：US20130148233A1
公开(公告)日：2013-06-13
申请号：US13316953
申请日：2011-12-12
申请人： Haitao Xia , Ming Jin , Dahua Qin , Shaohua Yang
发明人： Haitao Xia , Ming Jin , Dahua Qin , Shaohua Yang
IPC分类号： H03H7/30 , G11B5/035
CPC分类号： G11B5/59605 , G11B5/035 , G11B5/09 , G11B5/59622 , G11B20/10046 , G11B2220/415
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 equalizer circuit, a signal to noise ratio calculation circuit, and a parameter adjustment circuit. The equalizer circuit is operable to equalize a data input to yield an equalized output. The signal to noise ratio calculation circuit is operable to calculate a signal to noise ratio of the equalized output based at least in part on a noise power derived from the equalized output. The parameter adjustment circuit is operable to adjust a parameter based at least in part on the signal to noise ratio.
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，讨论了包括均衡器电路，信噪比计算电路和参数调整电路的数据处理系统。均衡器电路可操作以均衡数据输入以产生均衡的输出。信噪比计算电路可用于至少部分地基于从均衡输出得到的噪声功率来计算均衡输出的信噪比。参数调整电路可操作以至少部分地基于信噪比来调整参数。

80. 发明授权

US08161351B2 Systems and methods for efficient data storage 有权
公开(公告)号：US08161351B2
公开(公告)日：2012-04-17
申请号：US12750654
申请日：2010-03-30
申请人： Ming Jin , Shaohua Yang
发明人： Ming Jin , Shaohua Yang
IPC分类号： H03M13/00
CPC分类号： G11B20/1217 , G11B5/59655 , G11B2020/1222 , G11B2020/1232 , G11B2020/1284 , G11B2020/1289 , G11B2020/1292 , G11B2020/185 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for preparing and accessing super sector data sets. As an example, a data storage system including a storage medium is disclosed. The storage medium includes a first servo data region and a second servo data region separated by a user data region. The user data region includes at least a portion of a first codeword and a portion of a second codeword that are together associated with a common header data.

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