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1. 发明授权

US08773811B2 Systems and methods for zone servo timing gain recovery 有权
标题翻译：区域伺服定时增益恢复的系统和方法
公开(公告)号：US08773811B2
公开(公告)日：2014-07-08
申请号：US13316899
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： G11B5/54
CPC分类号： G11B5/59688 , G11B5/59622
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing system is disclosed that includes Various embodiments of the present invention provide data processing systems that include an analog to digital converter circuit and a phase and gain computation circuit. The analog to digital converter circuit is operable to convert an analog input into a series of digital samples. At least a portion of the series of digitals samples represent a periodic signal from a servo data region. The phase and gain computation circuit is operable to: determine an approximate amplitude of the periodic signal based at least in part upon the digital samples representing the periodic signal from the servo data region; determine a gain based at least in part on the approximate amplitude; and determine a phase based at least in part on the approximate amplitude.
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系统，其包括本发明的各种实施例，其提供包括模数转换器电路和相位和增益计算电路的数据处理系统。模数转换器电路可操作以将模拟输入转换为一系列数字采样。一系列数字采样的至少一部分表示来自伺服数据区的周期性信号。相位和增益计算电路可操作以：至少部分地基于表示来自伺服数据区域的周期信号的数字采样来确定周期信号的近似幅度; 至少部分地基于近似幅度确定增益; 并且至少部分地基于近似幅度来确定相位。

2. 发明授权

US08625216B2 Servo zone detector 有权
标题翻译：伺服区域检测器
公开(公告)号：US08625216B2
公开(公告)日：2014-01-07
申请号：US13490913
申请日：2012-06-07
申请人： Xun Zhang , Dahua Qin , Haitao Xia
发明人： Xun Zhang , Dahua Qin , Haitao Xia
IPC分类号： G11B5/09 , G11B21/02 , G11B5/596
CPC分类号： G11B5/59655 , G11B5/59688
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 discrete Fourier transform calculators operable to process input data to yield a magnitude response of the input data at each of a number of candidate frequencies, a comparator operable to compare the magnitude responses to yield a winning candidate frequency, a servo controller operable to process at least one servo field in the input data to identify a position of a sensor based on the at least one servo field, and a servo frequency synthesizer operable to establish a frequency of operation in the servo controller based at least in part on the winning candidate frequency.
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，其包括离散付里叶变换计算器，其可操作以处理输入数据以在多个候选频率的每一个处产生输入数据的幅度响应，比较器，可操作以将幅度响应与产生获胜候选频率，伺服控制器，其可操作以处理所述输入数据中的至少一个伺服字段，以基于所述至少一个伺服字段识别传感器的位置;以及伺服频率合成器，其可操作以建立操作频率所述伺服控制器至少部分地基于所述获胜候选频率。

3. 发明申请

US20130329313A1 Servo Zone Detector 有权
标题翻译：伺服区检测器
公开(公告)号：US20130329313A1
公开(公告)日：2013-12-12
申请号：US13490913
申请日：2012-06-07
申请人： Xun Zhang , Dahua Qin , Haitao Xia
发明人： Xun Zhang , Dahua Qin , Haitao Xia
IPC分类号： G11B27/24 , G11B5/09
CPC分类号： G11B5/59655 , G11B5/59688
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 discrete Fourier transform calculators operable to process input data to yield a magnitude response of the input data at each of a number of candidate frequencies, a comparator operable to compare the magnitude responses to yield a winning candidate frequency, a servo controller operable to process at least one servo field in the input data to identify a position of a sensor based on the at least one servo field, and a servo frequency synthesizer operable to establish a frequency of operation in the servo controller based at least in part on the winning candidate frequency.
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，其包括离散付里叶变换计算器，其可操作以处理输入数据以在多个候选频率的每一个处产生输入数据的幅度响应，比较器，可操作以将幅度响应与产生获胜候选频率，伺服控制器，其可操作以处理所述输入数据中的至少一个伺服字段，以基于所述至少一个伺服字段识别传感器的位置;以及伺服频率合成器，其可操作以建立操作频率所述伺服控制器至少部分地基于所述获胜候选频率。

4. 发明申请

US20130148226A1 Systems and Methods for Zone Servo Timing Gain Recovery 有权
标题翻译：区域伺服定时增益恢复系统与方法
公开(公告)号：US20130148226A1
公开(公告)日：2013-06-13
申请号：US13316899
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： G11B5/09
CPC分类号： G11B5/59688 , G11B5/59622
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing system is disclosed that includes Various embodiments of the present invention provide data processing systems that include an analog to digital converter circuit and a phase and gain computation circuit. The analog to digital converter circuit is operable to convert an analog input into a series of digital samples. At least a portion of the series of digitals samples represent a periodic signal from a servo data region. The phase and gain computation circuit is operable to: determine an approximate amplitude of the periodic signal based at least in part upon the digital samples representing the periodic signal from the servo data region; determine a gain based at least in part on the approximate amplitude; and determine a phase based at least in part on the approximate amplitude.
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系统，其包括本发明的各种实施例，其提供包括模数转换器电路和相位和增益计算电路的数据处理系统。模数转换器电路可操作以将模拟输入转换为一系列数字采样。一系列数字采样的至少一部分表示来自伺服数据区的周期性信号。相位和增益计算电路可操作以：至少部分地基于表示来自伺服数据区域的周期信号的数字采样来确定周期信号的近似幅度; 至少部分地基于近似幅度确定增益; 并且至少部分地基于近似幅度来确定相位。

5. 发明申请

US20130077186A1 Systems and Methods for Pattern Dependent Target Adaptation 有权
标题翻译：模式相关目标适应的系统和方法
公开(公告)号：US20130077186A1
公开(公告)日：2013-03-28
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： G11B5/09 , G06F17/10
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。

6. 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。

7. 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。

8. 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。

9. 发明授权

US08614858B2 Systems and methods for sync mark detection metric computation 有权
标题翻译：同步标记检测度量计算的系统和方法
公开(公告)号：US08614858B2
公开(公告)日：2013-12-24
申请号：US12946033
申请日：2010-11-15
申请人： Shaohua Yang , Dahua Qin
发明人： Shaohua Yang , Dahua Qin
IPC分类号： G11B5/09
CPC分类号： G11B20/1403 , G11B20/10046 , G11B20/10462 , G11B2020/1287 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a pattern detection circuit is discussed that includes a distance calculation circuit and a comparator circuit. The distance calculation circuit is operable to calculate a noise whitened distance between a reference signal and a received input to yield a comparison value. The comparator circuit is operable to compare the comparison value with a threshold 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。作为示例，讨论了包括距离计算电路和比较器电路的模式检测电路。距离计算电路可操作以计算参考信号和接收输入之间的噪声白化距离，以产生比较值。比较器电路可操作以将比较值与阈值进行比较。

10. 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。

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