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1. 发明申请

US20120281305A1 Systems and Methods for Servo Data Detection 有权
标题翻译：伺服数据检测系统与方法
公开(公告)号：US20120281305A1
公开(公告)日：2012-11-08
申请号：US13100021
申请日：2011-05-03
申请人： Haitao Xia , Xun Zhang , Shaohua Yang , Hongwei Song
发明人： Haitao Xia , Xun Zhang , Shaohua Yang , Hongwei Song
IPC分类号： G11B5/09
CPC分类号： G11B5/59644 , 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 a codeword detector circuit operable to apply a codeword based data detection algorithm to a data input corresponding to an encoded servo data region to yield a detected output, and a servo address mark processing circuit operable to identify a pre-defined pattern in the detected 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。作为示例，公开了一种数据处理电路，其包括码字检测器电路，其可操作以将基于码字的数据检测算法应用于与编码的伺服数据区域相对应的数据输入，以产生检测的输出，以及可操作的伺服地址标记处理电路以识别检测到的输出中的预定义模式。

2. 发明授权

US08665544B2 Systems and methods for servo data detection 有权
标题翻译：伺服数据检测系统和方法
公开(公告)号：US08665544B2
公开(公告)日：2014-03-04
申请号：US13100021
申请日：2011-05-03
申请人： Xia Haitao , Xun Zhang , Shaohua Yang , Hongwei Song
发明人： Xia Haitao , Xun Zhang , Shaohua Yang , Hongwei Song
IPC分类号： G11B5/09 , G11B5/00 , G11B5/596
CPC分类号： G11B5/59644 , 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 a codeword detector circuit operable to apply a codeword based data detection algorithm to a data input corresponding to an encoded servo data region to yield a detected output, and a servo address mark processing circuit operable to identify a pre-defined pattern in the detected 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。作为示例，公开了一种数据处理电路，其包括码字检测器电路，其可操作以将基于码字的数据检测算法应用于与编码的伺服数据区域相对应的数据输入，以产生检测的输出，以及可操作的伺服地址标记处理电路以识别检测到的输出中的预定义模式。

3. 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。

4. 发明授权

US08862960B2 Systems and methods for parity shared data encoding 有权
标题翻译：奇偶校验共享数据编码的系统和方法
公开(公告)号：US08862960B2
公开(公告)日：2014-10-14
申请号：US13269852
申请日：2011-10-10
申请人： Haitao Xia , Shaohua Yang , Johnson Yen
发明人： Haitao Xia , Shaohua Yang , Johnson Yen
IPC分类号： H03M13/00 , H03M13/37 , H03M13/11 , G11B20/18 , H03M13/29
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 low density parity check encoding system is described that includes: a low density parity check encoder circuit, and a combining circuit. The low density parity check encoder circuit is operable to encode a first data set to yield a first low density parity check encoded sub-codeword, and to encode a second data set to yield a second low density parity check encoded sub-codeword. The combining circuit is operable to: generate a composite low density parity check sub-codeword by mathematically combining at least the first low density parity check encoded sub-codeword and the second low density parity check encoded sub-codeword; and combine at least the first low density parity check encoded sub-codeword and the composite low density parity check sub-codeword into an overall 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，描述了一种低密度奇偶校验编码系统，其包括：低密度奇偶校验编码器电路和组合电路。低密度奇偶校验编码器电路可操作以对第一数据集进行编码，以产生第一低密度奇偶校验编码子码字，并对第二数据集进行编码以产生第二低密度奇偶校验编码子码字。组合电路可操作用于：通过至少第一低密度奇偶校验编码子码字和第二低密度奇偶校验编码子码字数学地组合来生成复合低密度奇偶校验子码字; 并且将至少第一低密度奇偶校验编码子码字和复合低密度奇偶校验子码字组合成总码字。

5. 发明授权

US08819521B2 Systems and methods for short media defect detection using non-binary coded information 有权
标题翻译：使用非二进制编码信息进行短介质缺陷检测的系统和方法
公开(公告)号：US08819521B2
公开(公告)日：2014-08-26
申请号：US13459289
申请日：2012-04-30
申请人： Fan Zhang , Weijun Tan , Haitao Xia , Shaohua Yang , Xuebin Wu , Wu Chang
发明人： Fan Zhang , Weijun Tan , Haitao Xia , Shaohua Yang , Xuebin Wu , Wu Chang
IPC分类号： G11C29/00
CPC分类号： G11B20/18 , G06F11/1076 , G11B20/10268
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. Such systems and methods may include data pre-processing and detection to identify a media defect.
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。这样的系统和方法可以包括数据预处理和检测以识别媒体缺陷。

6. 发明授权

US08767333B2 Systems and methods for pattern dependent target adaptation 有权
标题翻译：用于模式相关目标适应的系统和方法
公开(公告)号：US08767333B2
公开(公告)日：2014-07-01
申请号：US13239719
申请日：2011-09-22
申请人： Haitao Xia , Dahua Qin , Shaohua Yang
发明人： Haitao Xia , Dahua Qin , Shaohua Yang
IPC分类号： G11B5/35
CPC分类号： G11B5/09 , G11B20/10046 , G11B20/10296 , G11B20/10361 , G11B20/10509 , G11B20/1833 , G11B2020/185 , G11B2220/2516 , H03M13/2957 , H03M13/6343
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 a noise predictive filter circuit, a data detector circuit, and a first and a second pattern dependent adaptive target circuits. The noise predictive filter circuit includes at least a first pattern dependent filter circuit operable to perform noise predictive filtering on a data input for a first pattern using a first adaptive target to yield a first noise predictive output, and a second pattern dependent filter circuit operable to perform noise predictive filtering on the data input for a second pattern using a second adaptive target to yield a second noise predictive output. The data detector circuit is operable to apply a data detection algorithm to the first noise predictive output and the second noise predictive output to yield a detected output. The first pattern dependent adaptive target circuit is operable to adaptively calculate the first adaptive target based at least in part on the first noise predictive output and a training sequence. The second pattern dependent adaptive target circuit operable to adaptively calculate the second adaptive target based at least in part on the second noise predictive output and the training sequence.
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，公开了包括噪声预测滤波器电路，数据检测器电路以及第一和第二图案相关自适应目标电路的数据处理电路。所述噪声预测滤波器电路至少包括第一模式相关滤波器电路，其可操作以使用第一自适应目标对第一模式的数据输入执行噪声预测滤波以产生第一噪声预测输出，以及第二模式相关滤波器电路，使用第二自适应目标对第二模式的数据输入执行噪声预测滤波，以产生第二噪声预测输出。数据检测器电路可操作以将数据检测算法应用于第一噪声预测输出和第二噪声预测输出，以产生检测到的输出。第一模式相关自适应目标电路可操作以至少部分地基于第一噪声预测输出和训练序列自适应地计算第一自适应目标。第二模式相关自适应目标电路可操作以至少部分地基于第二噪声预测输出和训练序列自适应地计算第二自适应目标。

7. 发明授权

US08699167B2 Systems and methods for data detection using distance based tuning 有权
标题翻译：使用基于距离调谐的数据检测系统和方法
公开(公告)号：US08699167B2
公开(公告)日：2014-04-15
申请号：US13310028
申请日：2011-12-02
申请人： Haitao Xia , Weijun Tan , Nenad Miladinovic , Shaohua Yang
发明人： Haitao Xia , Weijun Tan , Nenad Miladinovic , Shaohua Yang
IPC分类号： G11B5/035 , H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H04L25/03254 , H04L25/0305
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。

8. 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。

9. 发明授权

US08661071B2 Systems and methods for partially conditioned noise predictive equalization 有权
标题翻译：用于部分条件噪声预测均衡的系统和方法
公开(公告)号：US08661071B2
公开(公告)日：2014-02-25
申请号：US12901742
申请日：2010-10-11
申请人： Shaohua Yang , Haitao Xia
发明人： Shaohua Yang , Haitao Xia
IPC分类号： G06F17/10
CPC分类号： H03H17/0248 , G11B20/10046 , H04L25/03012 , H04L25/03203 , H04L25/03299 , H04L25/03993
摘要： Various embodiments of the present invention provide systems and methods for equalization. As an example, a circuit for data equalization is described that includes a 2N state detector circuit that provides a series of detected bits based upon a conditioned input, and a noise predictive filter having a plurality of taps and operable to provide at least a portion of the conditioned input. At least a first of the plurality of taps uses a first subset of the series of detected bits, and a second of the plurality of taps uses a second subset of the series of detected bits. The first subset of the detected bits includes one more bit than the second subset of the detected bits.
摘要翻译：本发明的各种实施例提供用于均衡的系统和方法。作为示例，描述了用于数据均衡的电路，其包括2N状态检测器电路，其基于经调节的输入提供一系列检测到的位，以及具有多个抽头的噪声预测滤波器，并且可操作以提供至少一部分条件输入。所述多个抽头中的至少第一个抽头使用所述一系列检测到的位的第一子集，并且所述多个抽头中的第二个抽头使用所述一系列检测到的位的第二子集。检测到的比特的第一子集比检测到的比特的第二子集多一个比特。

10. 发明申请

US20130173932A1 Systems and Methods for Decimation Based Over-Current Control 有权
标题翻译：基于抽取的过电流控制系统与方法
公开(公告)号：US20130173932A1
公开(公告)日：2013-07-04
申请号：US13339403
申请日：2011-12-29
申请人： Shaohua Yang , Yang Han , Zongwang Li , Fan Zhang , Haitao Xia
发明人： Shaohua Yang , Yang Han , Zongwang Li , Fan Zhang , Haitao Xia
IPC分类号： G06F1/26
CPC分类号： G06F1/3287 , G06F1/26 , G06F1/3203 , G06F1/3221 , G06F1/3268 , G06F3/0625 , G11B19/00 , H03M1/002 , H03M1/12 , Y02D10/154
摘要： The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for power governance in a data processing system. In some such systems and methods, the operation of one or more calibration circuits is modified when it is determined that too many data processing circuits are active.
摘要翻译：本发明涉及用于数据处理的系统和方法，更具体地涉及用于数据处理系统中的功率治理的系统和方法。在一些这样的系统和方法中，当确定太多的数据处理电路是活动的时，修改一个或多个校准电路的操作。

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