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11. 发明公开

EP2741421A1 Low density parity check decoder with miscorrection handling 审中-公开
标题翻译：低密度奇偶校验验证器
公开(公告)号：EP2741421A1
公开(公告)日：2014-06-11
申请号：EP13185806.0
申请日：2013-09-24
申请人： LSI Corporation
发明人： Bolotov, Anatoli A. , Yang, Shaohua , Li, Zongwang , Grinchuk, Mikhail I , Ivanovic, Lav D. , Zhang, Fan , Han, Yang
IPC分类号： H03M13/11
CPC分类号： H03M13/13 , H03M13/1111 , H03M13/1142
摘要： A data processing system is disclosed including a decoder circuit, syndrome calculation circuit and hash calculation circuit. The decoder circuit is operable to apply a decoding algorithm to a decoder input based on a first portion of a composite matrix to yield a codeword. The syndrome calculation circuit is operable to calculate a syndrome based on the codeword and on the first portion of the composite matrix. The hash calculation circuit is operable to calculate a hash based on a second portion of the composite matrix. The decoder circuit is also operable to correct the codeword on the hash when the syndrome indicates that the codeword based on the first portion of the composite matrix is correct but a second test indicates that the codeword is miscorrected.
摘要翻译：公开了一种数据处理系统，包括解码器电路，校正子计算电路和散列计算电路。解码器电路可操作以基于复合矩阵的第一部分将解码算法应用于解码器输入以产生码字。校正子计算电路可操作以基于码字和复合矩阵的第一部分来计算校正子。散列计算电路可操作以基于复合矩阵的第二部分计算散列。当校验子指示基于复合矩阵的第一部分的码字是正确的但是第二测试指示码字被修改时，解码器电路还可操作以校正散列上的码字。

12. 发明公开

EP2706694A2 Apparatus and method for breaking trapping sets 审中-公开
标题翻译：用于破坏诱集装置的设备和方法
公开(公告)号：EP2706694A2
公开(公告)日：2014-03-12
申请号：EP13168975.4
申请日：2013-05-23
申请人： LSI Corporation
发明人： Han, Yang , Yang, Shaohua , Zhang, Fan , Li, Zongwang
IPC分类号： H04L1/00
CPC分类号： H03M13/6331 , H03M13/1142 , H03M13/2957 , H03M13/3723
摘要： An error correction data processing apparatus includes a noise predictive calibration circuit operable to calibrate a first set of filter coefficients based on a first data set and a second set of filter coefficients based on a second data set, and includes a first noise predictive detector operable to receive the first set of filter coefficients. The apparatus further includes a decoder operable to perform a first global iteration with the first noise predictive detector and determine a violation check count value, and a second noise predictive detector operable to receive the second set of filter coefficients if the violation check count value is less than a predetermined value or receive the first set of filter coefficients if the violation check count value is greater than the predetermined value.
摘要翻译：一种纠错数据处理装置包括：噪声预测校准电路，可操作用于基于第一数据集和基于第二数据集的第二组滤波器系数来校准第一组滤波器系数，并且包括第一噪声预测检测器，接收第一组滤波器系数。该设备还包括解码器，该解码器可操作用于利用第一噪声预测检测器执行第一全局迭代并确定违反检查计数值，以及第二噪声预测检测器，可操作用于如果违规检查计数值较小则接收第二组滤波器系数如果违规检查计数值大于预定值，则接收第一组滤波器系数。

13. 发明公开

EP2362395A3 Frequency-based approach for detection and classification of hard-disc defect regions 有权转让
标题翻译：对故障磁盘方面的检测和分类基于频率的方法
公开(公告)号：EP2362395A3
公开(公告)日：2012-01-11
申请号：EP11000843.0
申请日：2011-02-03
申请人： LSI Corporation
发明人： Mathew, George , Han, Yang , Yang, Shaohua , Li, Zongwang , Lee, Yuan, Xing
IPC分类号： G11B20/18 , G11B27/36 , G11B5/012 , G11B19/04
CPC分类号： G11B20/1816 , G11B19/041 , G11B27/36
摘要： In a hard-disc drive read channel, frequency-based measures are generated at two different data frequencies (e.g., 2T and DC) by applying a transform, such as a discrete Fourier transform (DFT), to signal values, such as ADC or equalizer output values, corresponding to, e.g., a 2T data pattern stored on the hard disc. The frequency-based measures are used to detect defect regions on the hard disc and/or to classify defect regions as being due to either thermal asperity (TA) or drop-out media defect (MD).

14. 发明公开

EP2369585A1 Amplitude-based approach for detection and classification of hard-disc defect regions 审中-公开
标题翻译：放大器安东萨尔Erkennung und Klassifizierung defekter Regionen einer Festplatte
公开(公告)号：EP2369585A1
公开(公告)日：2011-09-28
申请号：EP11001159.0
申请日：2011-02-12
申请人： LSI Corporation
发明人： Yang, Shaohua , Mathew, George , Han, Yang , Li, Zongwang , Lee, Yuan Xing
IPC分类号： G11B19/04 , G11B20/10
CPC分类号： G11B20/1816 , G11B20/1883 , G11B2005/0018 , G11B2020/1823 , G11B2220/20 , G11B2220/2516
摘要： In a hard-disc drive, a defect region on the hard disc is classified as corresponding to either thermal asperity (TA) or media defect (MD) by generating two statistical measures. A first measure (e.g., α 1 ) is based on (i) the magnitudes of one or both of signal values (e.g., equalizer input or output signal values) and the corresponding expected values of those signal values and (ii) the signs of one or both of the signal values and the expected signal values. A second measure (e.g., α 2 ) is based on the magnitudes of one or both of the signal values and the expected signal values, but not the signs of either the signal values or the expected signal values. The two measures are then compared to determine whether the defect region corresponds to TA or MD.
摘要翻译：在硬盘驱动器中，通过产生两个统计测量值将硬盘上的缺陷区域分类为对应于热粗糙度（TA）或介质缺陷（MD）。第一个测量（例如，±1）基于（i）信号值（例如，均衡器输入或输出信号值）中的一个或两个的大小以及那些信号值的对应的预期值，以及（ii）一个或两个信号值和预期信号值。第二量度（例如，±2）基于信号值和预期信号值中的一个或两个的大小，而不是信号值或期望信号值的符号。然后比较两个测量值以确定缺陷区域是否对应于TA或MD。

15. 发明公开

EP2670074A3 Systems and methods for data processing including EET feedback 无效
标题翻译：与EET反馈的系统和方法对数据进行处理
公开(公告)号：EP2670074A3
公开(公告)日：2014-10-29
申请号：EP13160629.5
申请日：2013-03-22
申请人： LSI Corporation
发明人： Zhang, Fan , Wang, Chung-Li , Han, Yang , Yang, Shaohua , Wu, Xuebin , Xia, Haitao , Jin, Ming
IPC分类号： H04L1/00 , H03M13/11 , H03M13/29 , H04L25/06 , H03M13/00 , H03M13/15
CPC分类号： H03M13/6331 , H03M13/1111 , H03M13/1128 , H03M13/1515 , H03M13/2957 , H04L1/005 , H04L25/061 , H04L25/067
摘要： The present invention is related to systems and methods for data processing system characterization. An embodiment of a data processing system comprises: a data processing circuit, wherein the data processing circuit includes: a data detector circuit operable to apply a data detection algorithm to a sample data set to yield a detected output; a detected output error count circuit operable to generate an output side error count corresponding to a number of errors remaining in the detected output, wherein the detected output error count circuit is operable to provide the output side error count external to the data processing circuit; a data decoder circuit operable to apply a data decoding algorithm to the detected output to yield a decoded output; and a decoded output error count circuit operable to generate an input side error count corresponding to a number of errors remaining in the decoded output, wherein the decoded output error count circuit is operable to provide the input side error count external to the data processing circuit

16. 发明公开

EP2568611A3 Systems and methods for non binary decoding biasing control 审中-公开
标题翻译：对于非二进制解码偏置系统和程序
公开(公告)号：EP2568611A3
公开(公告)日：2013-07-10
申请号：EP12176102.7
申请日：2012-07-12
申请人： LSI Corporation
发明人： Yang, Shaohua , Tan, Weijun , Li, Zongwang , Wang, Chung-Li , Chang, Wu , Zhang, Fan , Han, Yang
IPC分类号： H03M13/11 , H03M13/45 , H03M13/39 , G11B27/36 , H03M13/00 , G11B20/10
CPC分类号： H03M13/1102 , G11B20/10379 , G11B27/36 , G11B2220/2516 , H03M13/1111 , H03M13/3983 , H03M13/45 , H03M13/6569
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit (100) is disclosed that includes a data detector circuit (135), a biasing circuit (140), and a data decoder circuit (155). The data detector circuit is operable to apply a data detection algorithm to a series of symbols to yield a detected output, and the detected output includes a series of soft decision data corresponding to non-binary symbols. The biasing circuit is operable apply a bias to each of the series of soft decision data to yield a series of biased soft decision data. The data decoder circuit is operable to apply a data decoding algorithm to the series of biased soft decision data corresponding to the non-binary symbols.

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