-
公开(公告)号：US08804260B2
公开(公告)日：2014-08-12
申请号：US13186174
申请日：2011-07-19
申请人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
发明人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
IPC分类号： G11B5/09
CPC分类号： G11B20/10046 , G11B5/012 , G11B5/09 , G11B19/045 , G11B20/10398 , G11B20/1217 , G11B2020/10759 , G11B2020/1232 , G11B2020/1298 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track data set. The inter-track interference response circuit is operable to estimate an inter-track interference response from the previous track data set based at least in part on the previous track data set and a current track data set. The inter-track interference signal estimator circuit is operable to calculate an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set.
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，讨论了包括数据缓冲器，轨道间干扰响应电路和轨道间干扰信号估计器电路的数据处理电路。 数据缓冲器可操作以存储先前的轨迹数据集。 轨道间干扰响应电路可用于至少部分地基于先前的轨道数据集和当前轨道数据集来估计来自先前轨道数据集的轨道间干扰响应。 轨道间干扰信号估计器电路可用于至少部分地基于先前的轨道数据集和来自前一轨道数据集的轨道间干扰响应来计算来自先前轨道数据集的轨道间干扰。
-
公开(公告)号：US20120063022A1
公开(公告)日：2012-03-15
申请号：US13186174
申请日：2011-07-19
申请人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
发明人： George Mathew , Jongseung Park , Shaohua Yang , Erich F. Haratsch , Ming Jin , Yuan Xing Lee
IPC分类号： G11B5/09
CPC分类号： G11B20/10046 , G11B5/012 , G11B5/09 , G11B19/045 , G11B20/10398 , G11B20/1217 , G11B2020/10759 , G11B2020/1232 , G11B2020/1298 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a data buffer, an inter-track interference response circuit, and an inter-track interference signal estimator circuit. The data buffer is operable to store a previous track data set. The inter-track interference response circuit is operable to estimate an inter-track interference response from the previous track data set based at least in part on the previous track data set and a current track data set. The inter-track interference signal estimator circuit is operable to calculate an inter-track interference from the previous track data set based at least in part on the previous track data set and the inter-track interference response from the previous track data set.
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，讨论了包括数据缓冲器，轨道间干扰响应电路和轨道间干扰信号估计器电路的数据处理电路。 数据缓冲器可操作以存储先前的轨迹数据集。 轨道间干扰响应电路可用于至少部分地基于先前的轨道数据集和当前轨道数据集来估计来自先前轨道数据集的轨道间干扰响应。 轨道间干扰信号估计器电路可用于至少部分地基于先前的轨道数据集和来自前一轨道数据集的轨道间干扰响应来计算来自先前轨道数据集的轨道间干扰。
-
3.发明申请公开(公告)号：US20110292535A1
公开(公告)日：2011-12-01
申请号：US12790249
申请日：2010-05-28
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B5/59616 , G11B20/1403 , G11B27/3027 , G11B2020/1287 , G11B2020/1476 , G11B2220/2516 , H04L7/08
摘要： Methods and apparatus are provided for detection of a synchronization mark based on a position of an extreme distance metric. A synchronization mark is detected in a received signal by computing a distance metric between the received signal and an ideal version of the received signal expected when reading the synchronization mark, wherein the distance metric is computed for a plurality of positions within a search window; determining a substantially extreme distance metric within the search window; and detecting the synchronization mark based on a position of the substantially extreme distance metric. The distance metric can comprise a sum of square differences or a Euclidean distance between the received signal and the ideal version of the received signal.
摘要翻译： 提供了用于基于极距离度量的位置来检测同步标记的方法和装置。 通过计算接收到的信号与读取同步标记之间期望的接收信号的理想版本之间的距离度量，在接收信号中检测同步标记，其中针对搜索窗口内的多个位置计算距离度量; 确定搜索窗口内的基本上极端的距离度量; 以及基于所述基本上极端的距离度量的位置来检测所述同步标记。 距离度量可以包括平方差的和或接收信号与接收信号的理想版本之间的欧氏距离。
-
4.发明授权公开(公告)号：US08587888B2
公开(公告)日：2013-11-19
申请号：US12790249
申请日：2010-05-28
IPC分类号： G11B5/09
CPC分类号： G11B20/10009 , G11B5/59616 , G11B20/1403 , G11B27/3027 , G11B2020/1287 , G11B2020/1476 , G11B2220/2516 , H04L7/08
摘要： Methods and apparatus are provided for detection of a synchronization mark based on a position of an extreme distance metric. A synchronization mark is detected in a received signal by computing a distance metric between the received signal and an ideal version of the received signal expected when reading the synchronization mark, wherein the distance metric is computed for a plurality of positions within a search window; determining a substantially extreme distance metric within the search window; and detecting the synchronization mark based on a position of the substantially extreme distance metric. The distance metric can comprise a sum of square differences or a Euclidean distance between the received signal and the ideal version of the received signal.
摘要翻译： 提供了用于基于极距离度量的位置来检测同步标记的方法和装置。 在接收到的信号中通过计算接收信号与读取同步标记之间期望的接收信号的理想版本之间的距离度量来检测接收信号中的同步标记，其中为搜索窗口内的多个位置计算距离度量; 确定搜索窗口内的基本上极端的距离度量; 以及基于所述基本上极端的距离度量的位置来检测所述同步标记。 距离度量可以包括平方差的和或接收信号与接收信号的理想版本之间的欧氏距离。
-
公开(公告)号：US07725800B2
公开(公告)日：2010-05-25
申请号：US11198945
申请日：2005-08-05
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译： 使用第一和第二级解码器执行两级纠错解码。 可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。 使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。 第一级解码器产生软信息。 软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。 软信息还可以包括每个最可能的错误事件的误差度量值。 第二级解码器使用外部分量代码基于软信息生成校正的校正子值。 然后选择对应于校正的综合征值的最可能的网格路径。
-
公开(公告)号：US08423873B2
公开(公告)日：2013-04-16
申请号：US12787120
申请日：2010-05-25
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
IPC分类号： H03M13/00
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译： 使用第一和第二级解码器执行两级纠错解码。 可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。 使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。 第一级解码器产生软信息。 软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。 软信息还可以包括每个最可能的错误事件的误差度量值。 第二级解码器使用外部分量代码基于软信息生成校正的校正子值。 然后选择对应于校正的综合征值的最可能的网格路径。
-
公开(公告)号：US07590920B2
公开(公告)日：2009-09-15
申请号：US11198943
申请日：2005-08-05
申请人： Shaohua Yang , Mario Blaum , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
发明人： Shaohua Yang , Mario Blaum , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi
IPC分类号： H03M13/00
CPC分类号： H03M13/29 , H03M13/1515 , H03M13/152 , H03M13/2903 , H03M13/2906
摘要： An error correction encoder inserts redundant parity information into a data stream to improve system reliability. The encoder can generate the redundant parity information using a composite code. Dummy bits are inserted into the data stream in locations reserved for parity information generated by subsequent encoding. The error correction code can have a uniform or a non-uniform span. The span corresponds to consecutive channel bits that are within a single block of a smaller parity code that is used to form a composite code. The span lengths can be variant across the whole codeword by inserting dummy bits in less than all of the spans.
摘要翻译： 纠错编码器将冗余奇偶校验信息插入到数据流中，以提高系统的可靠性。 编码器可以使用复合代码生成冗余奇偶校验信息。 在由后续编码生成的奇偶校验信息保留的位置中将虚拟位插入到数据流中。 纠错码可以具有均匀或不均匀的间距。 该跨度对应于用于形成复合代码的较小奇偶码的单个块内的连续通道位。 跨越整个码字的跨度长度可以通过在少于所有跨度的位置插入虚拟位而变化。
-
公开(公告)号：US20100235718A1
公开(公告)日：2010-09-16
申请号：US12787120
申请日：2010-05-25
申请人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
发明人： Shaohua Yang , Richard Leo Galbraith , Ksenija Lakovic , Yuan Xing Lee , Travis Oenning , Jongseung Park , Hideki Sawaguchi , Bruce A. Wilson
CPC分类号： H03M13/45 , G11B20/1833 , G11B2020/1863 , G11B2220/2516 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/256 , H03M13/2906 , H03M13/2909 , H03M13/2945 , H03M13/2957 , H03M13/3784 , H03M13/4146 , H03M13/6343
摘要： Two levels of error correction decoding are performed using first and second level decoders. A composite code formed by combining an inner component code and an outer component code can be used to decode the data and correct any errors. Performing two level decoding using a composite code allows the size of the inner parity block to be reduced to a single Reed-Solomon symbol while keeping a good code rate. The first level decoder generates soft information. The soft information can indicate a most likely error event for each possible syndrome value of the inner component code. The soft information can also include error metric values for each of the most likely error events. The second level decoder generates corrected syndrome values based on the soft information using the outer component code. The most likely trellis path that corresponds to the corrected syndrome values is then selected.
摘要翻译： 使用第一和第二级解码器执行两级纠错解码。 可以使用通过组合内部组件代码和外部组件代码形成的组合代码来解码数据并纠正任何错误。 使用复合代码执行两级解码允许内部奇偶校验块的大小减少到单个Reed-Solomon符号，同时保持良好的代码率。 第一级解码器产生软信息。 软信息可以指示内部组件代码的每个可能的综合征值的最可能的错误事件。 软信息还可以包括每个最可能的错误事件的误差度量值。 第二级解码器使用外部分量代码基于软信息生成校正的校正子值。 然后选择对应于校正的综合征值的最可能的网格路径。
-
9.发明授权AGC loop with weighted zero forcing and LMS error sources and methods for using such 有权具有加权零强制和LMS误差源的AGC环路及其使用方法公开(公告)号：US07872823B2
公开(公告)日：2011-01-18
申请号：US12352540
申请日：2009-01-12
申请人： Jingfeng Liu , Hongwei Song , Jongseung Park , George Mathew , Yuan Xing Lee
发明人： Jingfeng Liu , Hongwei Song , Jongseung Park , George Mathew , Yuan Xing Lee
IPC分类号： G11B5/09
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10027 , G11B20/10046 , H03G3/30 , H03M1/185
摘要： Various embodiments of the present invention provide systems and methods for gain control. For example, some embodiments of the present invention provide variable gain control circuits. Such circuits include a zero forcing loop generating a zero forcing feedback and a least mean square loop generating a least mean square feedback. An error quantization circuit generates a hybrid feedback based upon a threshold condition using the zero forcing feedback and the least mean square feedback. A variable gain amplifier is at least in part controlled by a derivative of the hybrid feedback.
摘要翻译： 本发明的各种实施例提供用于增益控制的系统和方法。 例如，本发明的一些实施例提供可变增益控制电路。 这种电路包括产生零强制反馈的零强制环路和产生最小均方反馈的最小均方环路。 误差量化电路使用零强制反馈和最小均方反馈基于阈值条件产生混合反馈。 可变增益放大器至少部分地由混合反馈的导数来控制。
-
公开(公告)号：US08175201B2
公开(公告)日：2012-05-08
申请号：US12663325
申请日：2008-10-27
申请人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
发明人： George Mathew , Yuan Xing Lee , Hongwei Song , Liu Jingfeng , Jongseung Park
CPC分类号： G11B19/041 , G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a target filter circuit (265). The equalizer circuit performs equalization based at least in part on an equalizer coefficient (215). The methods further include generating an error (285) based upon a first output from the equalizer circuit and a second output from the target filter circuit. An inter-symbol interference component (295) is extracted from the error (285) and used to calculate an equalizer gradient (226). Based at least in part on the equalizer gradient (226), the equalizer coefficient (215) is calculated.
摘要翻译： 本发明的各种实施例提供了用于执行自适应均衡的系统和方法。 例如，本发明的各种实施例提供了用于自适应均衡的方法，其包括向数据处理系统提供均衡器电路（210）和目标滤波器电路（265）。 均衡器电路至少部分地基于均衡器系数（215）来执行均衡。 所述方法还包括基于均衡器电路的第一输出和来自目标滤波器电路的第二输出产生误差（285）。 从误差（285）提取符号间干扰分量（295），并用于计算均衡器梯度（226）。 至少部分基于均衡器梯度（226），计算均衡器系数（215）。
-
-
-
-
-
-
-
-
-
搜索结果
110 条记录 (耗时 0.03 秒)
