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1. 发明授权

US08669891B2 Systems and methods for ADC based timing and gain control 有权
标题翻译：基于ADC的定时和增益控制的系统和方法
公开(公告)号：US08669891B2
公开(公告)日：2014-03-11
申请号：US13186267
申请日：2011-07-19
申请人： Haitao Xia , George Mathew , Shaohua Yang
发明人： Haitao Xia , George Mathew , Shaohua Yang
IPC分类号： H03M3/00
CPC分类号： H03M1/1028 , H03M1/12
摘要： Various embodiments of the present invention provide circuits, systems and methods for data processing. For example, a data processing circuit is discussed that includes: an analog to digital converter circuit, a target response circuit, and a timing circuit. The analog to digital converter circuit is operable to receive a data input and to provide corresponding digital samples synchronous to a sampling phase. The sampling phase corresponds to a phase feedback. The target response circuit is operable to provide an expected output corresponding to a known input. The timing circuit is operable to generate the phase feedback based at least in part on values derived from the expected output.
摘要翻译：本发明的各种实施例提供用于数据处理的电路，系统和方法。例如，讨论了一种数据处理电路，其包括：模数转换器电路，目标响应电路和定时电路。模数转换器电路可操作以接收数据输入并提供与采样相位同步的相应数字采样。采样相位对应于相位反馈。目标响应电路可操作以提供对应于已知输入的预期输出。定时电路可操作以至少部分地基于从预期输出导出的值来产生相位反馈。

2. 发明申请

US20130021187A1 Systems and Methods for ADC Based Timing and Gain Control 有权
标题翻译：基于ADC的时序和增益控制的系统和方法
公开(公告)号：US20130021187A1
公开(公告)日：2013-01-24
申请号：US13186267
申请日：2011-07-19
申请人： Haitao Xia , George Mathew , Shaohua Yang
发明人： Haitao Xia , George Mathew , Shaohua Yang
IPC分类号： H03M1/12
CPC分类号： H03M1/1028 , H03M1/12
摘要： Various embodiments of the present invention provide circuits, systems and methods for data processing. For example, a data processing circuit is discussed that includes: an analog to digital converter circuit, a target response circuit, and a timing circuit. The analog to digital converter circuit is operable to receive a data input and to provide corresponding digital samples synchronous to a sampling phase. The sampling phase corresponds to a phase feedback. The target response circuit is operable to provide an expected output corresponding to a known input. The timing circuit is operable to generate the phase feedback based at least in part on values derived from the expected output.
摘要翻译：本发明的各种实施例提供用于数据处理的电路，系统和方法。例如，讨论了一种数据处理电路，其包括：模数转换器电路，目标响应电路和定时电路。模数转换器电路可操作以接收数据输入并提供与采样相位同步的相应数字采样。采样相位对应于相位反馈。目标响应电路可操作以提供对应于已知输入的预期输出。定时电路可操作以至少部分地基于从预期输出导出的值来产生相位反馈。

3. 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。

4. 发明申请

US20130021690A1 Systems and Methods for User Data Based Fly Height Calculation 有权
标题翻译：基于用户数据的飞行高度计算系统与方法
公开(公告)号：US20130021690A1
公开(公告)日：2013-01-24
申请号：US13185562
申请日：2011-07-19
申请人： Haitao Xia , George Mathew , Ming Jin , Shaohua Yang
发明人： Haitao Xia , George Mathew , Ming Jin , Shaohua Yang
IPC分类号： G11B21/12 , G11B5/09 , G11B20/18
CPC分类号： G11B5/6029
摘要： Various embodiments of the present invention provide systems and methods for calculating and/or modifying fly height. For example, a circuit for calculating fly height is disclosed that includes: a first pattern detector circuit, a second pattern detector circuit, a first pattern fly height calculation circuit, a second pattern fly height calculation circuit, a first averaging circuit, a second averaging circuit, and a combining circuit.
摘要翻译：本发明的各种实施例提供了用于计算和/或修改飞行高度的系统和方法。例如，公开了一种用于计算飞行高度的电路，其包括：第一模式检测器电路，第二模式检测器电路，第一模式飞行高度计算电路，第二模式飞行高度计算电路，第一平均电路，第二平均电路和组合电路。

5. 发明授权

US08345369B2 Systems and methods for data recovery using enhanced sync mark location 有权
标题翻译：使用增强的同步标记位置进行数据恢复的系统和方法
公开(公告)号：US08345369B2
公开(公告)日：2013-01-01
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： G11B5/09
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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US08526133B2 Systems and methods for user data based fly height calculation 有权
标题翻译：基于用户数据的飞行高度计算的系统和方法
公开(公告)号：US08526133B2
公开(公告)日：2013-09-03
申请号：US13185562
申请日：2011-07-19
申请人： Haitao Xia , George Mathew , Ming Jin , Shaohua Yang
发明人： Haitao Xia , George Mathew , Ming Jin , Shaohua Yang
IPC分类号： G11B21/02
CPC分类号： G11B5/6029
摘要： Various embodiments of the present invention provide systems and methods for calculating and/or modifying fly height. For example, a circuit for calculating fly height is disclosed that includes: a first pattern detector circuit, a second pattern detector circuit, a first pattern fly height calculation circuit, a second pattern fly height calculation circuit, a first averaging circuit, a second averaging circuit, and a combining circuit.
摘要翻译：本发明的各种实施例提供了用于计算和/或修改飞行高度的系统和方法。例如，公开了一种用于计算飞行高度的电路，其包括：第一模式检测器电路，第二模式检测器电路，第一模式飞行高度计算电路，第二模式飞行高度计算电路，第一平均电路，第二平均电路和组合电路。

10. 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。

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