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1. 发明授权

US08516348B2 Systems and methods for enhanced media defect detection 有权
标题翻译：增强介质缺陷检测的系统和方法
公开(公告)号：US08516348B2
公开(公告)日：2013-08-20
申请号：US13495922
申请日：2012-06-13
申请人： Weijun Tan , Hongwei Song , Shaohua Yang
发明人： Weijun Tan , Hongwei Song , Shaohua Yang
IPC分类号： H03M13/00
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10055 , H03M13/3905
摘要： Various embodiments of the present invention provide systems and methods for detecting storage medium defects. As one example, a media defect detection system is disclosed that includes a data detector circuit that applies a detection algorithm to the data input and provides a hard output and a soft output. A first circuit combines a first derivative of the hard output with a derivative of the data input to yield a first combined signal. A second circuit combines a second derivative of the hard output with a derivative of the first combined signal to yield a second combined signal. A third circuit combines a derivative of the soft output with the second combined signal and a threshold value to yield a defect signal.
摘要翻译：本发明的各种实施例提供了用于检测存储介质缺陷的系统和方法。作为一个示例，公开了一种媒体缺陷检测系统，其包括将检测算法应用于数据输入并提供硬输出和软输出的数据检测器电路。第一电路将硬输出的一阶导数与数据输入的导数组合以产生第一组合信号。第二电路将硬输出的二阶导数与第一组合信号的导数组合以产生第二组合信号。第三电路将软输出的导数与第二组合信号和阈值组合以产生缺陷信号。

2. 发明申请

US20120226958A1 METHOD FOR DETECTING SHORT BURST ERRORS IN LDPC SYSTEM 有权
标题翻译：用于检测LDPC系统中短路脉冲误差的方法
公开(公告)号：US20120226958A1
公开(公告)日：2012-09-06
申请号：US13469746
申请日：2012-05-11
申请人： Weijun Tan , Shaohua Yang , Hongwei Song
发明人： Weijun Tan , Shaohua Yang , Hongwei Song
IPC分类号： H03M13/11 , G06F11/10
CPC分类号： H03M13/1128 , H03M13/17
摘要： The present invention is a device for detecting short burst errors. The device includes a first signal input, wherein the first signal input is configured to receive a first signal. The device includes a second signal input, wherein the second signal input is configured to receive a second signal. The device includes a logic gate, wherein the logic gat is operable for receiving the first signal vial the first signal input, receiving the second signal via the second signal input, and generating a logic output gate signal based on the received first signal and the second signal. Furthermore, the device includes a filter, wherein the filter is configured for receiving the logic output gate signal from the logic gate and generates a filter output signal based upon the received logic output gate signal, wherein the filter output signal is operable for flagging errors.
摘要翻译：本发明是用于检测短脉冲串错误的装置。该设备包括第一信号输入，其中第一信号输入被配置为接收第一信号。该设备包括第二信号输入，其中第二信号输入被配置为接收第二信号。该装置包括逻辑门，其中逻辑门可操作用于接收第一信号输入端，第一信号输入端经由第二信号输入端接收第二信号，并根据接收的第一信号和第二信号产生逻辑输出门信号信号。此外，该器件包括滤波器，其中滤波器被配置为从逻辑门接收逻辑输出门信号，并且基于接收的逻辑输出门信号产生滤波器输出信号，其中滤波器输出信号可用于标记误差。

3. 发明申请

US20120254679A1 Systems and Methods for Enhanced Media Defect Detection 有权
标题翻译：增强介质缺陷检测的系统和方法
公开(公告)号：US20120254679A1
公开(公告)日：2012-10-04
申请号：US13495922
申请日：2012-06-13
申请人： Weijun Tan , Hongwei Song , Shaohua Yang
发明人： Weijun Tan , Hongwei Song , Shaohua Yang
IPC分类号： G11C29/08 , G06F11/26
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10055 , H03M13/3905
摘要： Various embodiments of the present invention provide systems and methods for detecting storage medium defects. As one example, a media defect detection system is disclosed that includes a data detector circuit that applies a detection algorithm to the data input and provides a hard output and a soft output. A first circuit combines a first derivative of the hard output with a derivative of the data input to yield a first combined signal. A second circuit combines a second derivative of the hard output with a derivative of the first combined signal to yield a second combined signal. A third circuit combines a derivative of the soft output with the second combined signal and a threshold value to yield a defect signal.
摘要翻译：本发明的各种实施例提供了用于检测存储介质缺陷的系统和方法。作为一个示例，公开了一种媒体缺陷检测系统，其包括将检测算法应用于数据输入并提供硬输出和软输出的数据检测器电路。第一电路将硬输出的一阶导数与数据输入的导数组合以产生第一组合信号。第二电路将硬输出的二阶导数与第一组合信号的导数组合以产生第二组合信号。第三电路将软输出的导数与第二组合信号和阈值组合以产生缺陷信号。

4. 发明申请

US20110080211A1 Systems and Methods for Noise Reduced Data Detection 审中-公开
标题翻译：降噪数据检测系统和方法
公开(公告)号：US20110080211A1
公开(公告)日：2011-04-07
申请号：US12992948
申请日：2009-04-17
申请人： Shaohua Yang , Yuan Xing Lee , Richard Rauschmayer , Hongwei Song , Jingfeng Liu , Weijun Tan
发明人： Shaohua Yang , Yuan Xing Lee , Richard Rauschmayer , Hongwei Song , Jingfeng Liu , Weijun Tan
IPC分类号： H03K5/00
CPC分类号： G11B20/24 , G11B20/10037 , G11B20/10194 , G11B20/10527 , G11B20/1833 , G11B20/1879 , G11B2020/1062 , G11B2020/10685 , G11B2020/10694 , G11B2020/10759 , G11B2020/183 , G11B2020/185 , G11B2220/2516 , H03M13/1105 , H03M13/2948 , H03M13/3746 , H03M13/6343 , H04L1/005 , H04L1/0057
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide noise reduced data processing circuits. Such circuits include a selector circuit, a sample set averaging circuit, and a data detection circuit. The selector circuit provides either a new sample set or an averaged sample set as a sample output based on a select control signal. The sample set averaging circuit receives the new sample set and provides the averaged sample set. The averaged sample set is based upon two or more instances of the new sample set. The data detection circuit receives the sample output, and performs a data detection algorithm on the sample output and provides the select control signal and a data 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。例如，本发明的一些实施例提供降噪数据处理电路。这种电路包括选择器电路，采样组平均电路和数据检测电路。选择器电路基于选择控制信号提供新的采样集或平均采样集作为采样输出。样本集平均电路接收新的样本集并提供平均的样本集。平均采样集基于新样本集的两个或多个实例。数据检测电路接收采样输出，对采样输出执行数据检测算法，提供选择控制信号和数据输出。

5. 发明申请

US20110058631A1 Systems and Methods for Enhanced Flaw Scan in a Data Processing Device 有权
标题翻译：数据处理设备中增强型扫描扫描的系统和方法
公开(公告)号：US20110058631A1
公开(公告)日：2011-03-10
申请号：US12556180
申请日：2009-09-09
申请人： Weijun Tan , Shaohua Yang , Hongwei Song , Richard Rauschmayer
发明人： Weijun Tan , Shaohua Yang , Hongwei Song , Richard Rauschmayer
IPC分类号： H04L27/00
CPC分类号： H04L1/0057 , H04L1/0045
摘要： Various embodiments of the present invention provide systems and methods for flaw scan in a data processing system. As one example, a data processing system is disclosed that includes a data detector circuit, a bit sign inverting circuit, and an LDPC decoder circuit. The data detector circuit receives a verification data set that is an invalid LDPC codeword, and applies a data detection algorithm to the verification data set to yield a detected output. The bit sign inverting circuit modifies the sign of one or more elements of a first derivative of the detected output to yield a second derivative of the detected output. The second derivative of the detected output is an expected valid LDPC codeword. The LDPC decoder circuit applies a decoding algorithm to the second derivative of the detected output to yield a decoded output.
摘要翻译：本发明的各种实施例提供了在数据处理系统中的缺陷扫描的系统和方法。作为一个示例，公开了包括数据检测器电路，位符号反相电路和LDPC解码器电路的数据处理系统。数据检测器电路接收作为无效LDPC码字的验证数据集，并将数据检测算法应用于验证数据集以产生检测到的输出。位符号反相电路修改检测输出的一阶导数的一个或多个元素的符号，以产生检测到的输出的二阶导数。所检测的输出的二阶导数是期望的有效LDPC码字。 LDPC解码器电路将解码算法应用于检测输出的二阶导数，以产生解码输出。

6. 发明授权

US08341495B2 Method for detecting short burst errors in LDPC system 有权
标题翻译：用于检测LDPC系统中短脉冲串错误的方法
公开(公告)号：US08341495B2
公开(公告)日：2012-12-25
申请号：US13469746
申请日：2012-05-11
申请人： Weijun Tan , Shaohua Yang , Hongwei Song
发明人： Weijun Tan , Shaohua Yang , Hongwei Song
IPC分类号： H03M13/00 , H03M13/03
CPC分类号： H03M13/1128 , H03M13/17
摘要： The present invention is a device for detecting short burst errors. The device includes a first signal input, wherein the first signal input is configured to receive a first signal. The device includes a second signal input, wherein the second signal input is configured to receive a second signal. The device includes a logic gate, wherein the logic gate is operable for receiving the first signal via the first signal input, receiving the second signal via the second signal input, and generating a logic output gate signal based on the received first signal and the second signal. Furthermore, the device includes a filter, wherein the filter is configured for receiving the logic output gate signal from the logic gate and generates a filter output signal based upon the received logic output gate signal, wherein the filter output signal is operable for flagging errors.
摘要翻译：本发明是用于检测短脉冲串错误的装置。该设备包括第一信号输入，其中第一信号输入被配置为接收第一信号。该设备包括第二信号输入，其中第二信号输入被配置为接收第二信号。该器件包括逻辑门，其中逻辑门可操作用于经由第一信号输入接收第一信号，经由第二信号输入接收第二信号，并且基于接收到的第一信号和第二信号产生逻辑输出门信号信号。此外，该器件包括滤波器，其中滤波器被配置为从逻辑门接收逻辑输出门信号，并且基于接收的逻辑输出门信号产生滤波器输出信号，其中滤波器输出信号可用于标记误差。

7. 发明授权

US08176399B2 Using short burst error detector in a queue-based system 有权
标题翻译：在基于队列的系统中使用短脉冲串错误检测器
公开(公告)号：US08176399B2
公开(公告)日：2012-05-08
申请号：US12380237
申请日：2009-02-25
申请人： Weijun Tan , Shaohua Yang , Hongwei Song
发明人： Weijun Tan , Shaohua Yang , Hongwei Song
IPC分类号： H03M13/03
CPC分类号： H03M13/27 , H03M13/09 , H03M13/1102 , H03M13/15 , H03M13/1515 , H03M13/2957 , H03M13/2987 , H03M13/3746 , H03M13/3905 , H03M13/4146 , H03M13/6331 , H03M13/6337
摘要： A system, method, and device for detecting short burst errors in a queue-based system is disclosed. A first detector performs a data detection on a first input data set at a first time and on a second input data set at a second time. A second detector performs a data re-detection on input data sets. A decoder decodes derivations of the outputs of the first and second detector. A short burst error detector may perform a short burst error detection on decoded data and erase any detected errors. An output data buffer stores and orders the decoded data for output.
摘要翻译：公开了一种用于检测基于队列的系统中的短脉冲串错误的系统，方法和装置。第一检测器在第一时间对第一输入数据集合和第二输入数据集进行数据检测。第二检测器对输入数据集执行数据重新检测。解码器解码第一和第二检测器的输出的导数。短脉冲串错误检测器可对解码数据执行短脉冲串错误检测，并擦除任何检测到的错误。输出数据缓冲器存储并排序解码数据进行输出。

8. 发明授权

US07849385B2 Systems and methods for media defect detection utilizing correlated DFIR and LLR data 有权
标题翻译：使用相关的DFIR和LLR数据进行媒体缺陷检测的系统和方法
公开(公告)号：US07849385B2
公开(公告)日：2010-12-07
申请号：US12111255
申请日：2008-04-29
申请人： Weijun Tan , Hongwei Song , Shaohua Yang
发明人： Weijun Tan , Hongwei Song , Shaohua Yang
IPC分类号： H03M13/00
CPC分类号： G11B20/1816
摘要： The present invention provides systems and methods for detecting a media defect. A circuit providing a hard output and a soft output is used with the hard output and the soft output being combined and the product compared with a threshold. Based at least in part on the comparison, a media defect may be identified.
摘要翻译：本发明提供了用于检测介质缺陷的系统和方法。提供硬输出和软输出的电路与硬输出和软输出组合使用，并将产品与阈值进行比较。至少部分地基于比较，可以识别媒体缺陷。

9. 发明申请

US20090271670A1 Systems and Methods for Media Defect Detection Utilizing Correlated DFIR and LLR Data 有权
标题翻译：使用相关DFIR和LLR数据的介质缺陷检测系统和方法
公开(公告)号：US20090271670A1
公开(公告)日：2009-10-29
申请号：US12111255
申请日：2008-04-29
申请人： Weijun Tan , Hongwei Song , Shaohua Yang
发明人： Weijun Tan , Hongwei Song , Shaohua Yang
IPC分类号： G11C29/08 , G06F11/263
CPC分类号： G11B20/1816
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. For example, a method for detecting a media defect is disclosed. The method includes deriving a data input from a medium and performing a MAP detection on the data input. The MAP detection provides an NRZ output and an LLR output corresponding to the data input. A product of the NRZ output is correlated with a product of the LLR output to produce a correlated output. The correlated output is compared with a threshold value, and a media defect output is asserted based at least in part on the result of the comparison of the correlated output with the threshold value.
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。例如，公开了一种用于检测介质缺陷的方法。该方法包括从介质导出数据输入并对数据输入执行MAP检测。 MAP检测提供与数据输入相对应的NRZ输出和LLR输出。 NRZ输出的乘积与LLR输出的乘积相关，以产生相关输出。将相关输出与阈值进行比较，并且至少部分地基于相关输出与阈值的比较的结果来确定介质缺陷输出。

10. 发明授权

US08219892B2 Systems and methods for enhanced media defect detection 有权
标题翻译：增强介质缺陷检测的系统和方法
公开(公告)号：US08219892B2
公开(公告)日：2012-07-10
申请号：US12399713
申请日：2009-03-06
申请人： Weijun Tan , Hongwei Song , Shaohua Yang
发明人： Weijun Tan , Hongwei Song , Shaohua Yang
IPC分类号： G06F11/00
CPC分类号： G11B5/09 , G11B20/10009 , G11B20/10046 , G11B20/10055 , H03M13/3905
摘要： Various embodiments of the present invention provide systems and methods for detecting storage medium defects. As one example, a media defect detection system is disclosed that includes a data detector circuit that applies a detection algorithm to the data input and provides a hard output and a soft output. A first circuit combines a first derivative of the hard output with a derivative of the data input to yield a first combined signal. A second circuit combines a second derivative of the hard output with a derivative of the first combined signal to yield a second combined signal. A third circuit combines a derivative of the soft output with the second combined signal and a threshold value to yield a defect signal.
摘要翻译：本发明的各种实施例提供了用于检测存储介质缺陷的系统和方法。作为一个示例，公开了一种媒体缺陷检测系统，其包括将检测算法应用于数据输入并提供硬输出和软输出的数据检测器电路。第一电路将硬输出的一阶导数与数据输入的导数组合以产生第一组合信号。第二电路将硬输出的二阶导数与第一组合信号的导数组合以产生第二组合信号。第三电路将软输出的导数与第二组合信号和阈值组合以产生缺陷信号。

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