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1. 发明授权

US08977937B2 Systems and methods for compression driven variable rate decoding in a data processing system 有权
标题翻译：用于数据处理系统中的压缩驱动可变速率解码的系统和方法
公开(公告)号：US08977937B2
公开(公告)日：2015-03-10
申请号：US13422986
申请日：2012-03-16
申请人： Fan Zhang , Shaohua Yang , Yang Han , Chung-Li Wang , Weijun Tan
发明人： Fan Zhang , Shaohua Yang , Yang Han , Chung-Li Wang , Weijun Tan
IPC分类号： H03M13/00
CPC分类号： H03M13/1111 , G06F11/1076 , G11B20/00007 , G11B20/1833 , G11B2020/185 , G11B2220/2516 , H03M13/2957 , H03M13/3707 , H03M13/6331 , H03M13/6343 , H03M13/6516
摘要： The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for variable rate encoding and/or decoding in a data processing system. In some cases, embodiments include a variable length data decoder circuit that is operable to apply a decode algorithm to the encoded input based upon a first selected H-Matrix to yield a first decoded output and apply the decode algorithm to the encoded input based upon a second selected H-Matrix to yield a second decoded output.
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可变速率编码和/或解码的系统和方法。在一些情况下，实施例包括可变长度数据解码器电路，其可操作以基于第一所选H矩阵将编码输入应用于编码输入，以产生第一解码输出，并将解码算法应用于编码输入，基于第二选择的H矩阵以产生第二解码输出。

2. 发明授权

US08949701B2 Systems and methods for low latency media defect detection 有权
标题翻译：用于低延迟介质缺陷检测的系统和方法
公开(公告)号：US08949701B2
公开(公告)日：2015-02-03
申请号：US13368599
申请日：2012-02-08
申请人： Yang Cao , Scott M. Dziak , Nayak Ratnakar Aravind , Richard Rauschmayer , Weijun Tan
发明人： Yang Cao , Scott M. Dziak , Nayak Ratnakar Aravind , Richard Rauschmayer , Weijun Tan
IPC分类号： G06F11/00
CPC分类号： G11B20/10509 , G11B20/10046 , G11B20/10268 , G11B20/10472 , G11B20/1816 , G11B27/36 , G11B2220/2516 , H04L27/0002
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. For example, a media defect detection systems is disclosed that includes a data input derived from a medium, a fast envelope calculation circuit that receives the data input and provides a fast decay envelope value based on the data input, a slow envelope calculation circuit that receives the data input and provides a slow decay envelope value based on the data input, and a media defect detection circuit. The media defect detection circuit receives the slow decay envelope value and the fast decay envelope value, calculates a ratio value of the fast decay envelope value to the slow decay envelope value, and asserts a defect output based at least in part on the comparison of the ratio value to a defect 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，公开了一种媒体缺陷检测系统，其包括从介质导出的数据输入，快速包络计算电路，其接收数据输入并且基于数据输入提供快速衰减包络值;慢包络计算电路，其接收数据输入并基于数据输入提供慢衰减包络值，以及介质缺陷检测电路。媒体缺陷检测电路接收慢衰减包络值和快速衰减包络值，计算快速衰减包络值与慢衰减包络值的比值，并至少部分地基于比较来确定缺陷输出比值到缺陷阈值。

3. 发明授权

US08732562B2 Systems and methods for improved short media defect detection 有权
标题翻译：改进短介质缺陷检测的系统和方法
公开(公告)号：US08732562B2
公开(公告)日：2014-05-20
申请号：US13558228
申请日：2012-07-25
申请人： Weijun Tan , Fan Zhang , Shaohua Yang
发明人： Weijun Tan , Fan Zhang , Shaohua Yang
IPC分类号： H03M13/00
CPC分类号： G11B20/1889 , G11B20/10268
摘要： Various embodiments of the present invention provide systems and methods for media defect detection. Data pre-processing is operable to pre-process a symbol based detected output to yield a suspect symbol indicator, and data detection is operable to provide a defect indicator corresponding to a probable defect identified based on the suspect symbol indicator.
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。数据预处理可操作以预处理基于符号的检测输出以产生可疑符号指示符，并且数据检测可操作以提供对应于基于可疑符号指示符识别的可能缺陷的缺陷指示符。

4. 发明申请

US20140032998A1 Systems and Methods for Improved Short Media Defect Detection 有权
公开(公告)号：US20140032998A1
公开(公告)日：2014-01-30
申请号：US13558228
申请日：2012-07-25
申请人： Weijun Tan , Fan Zhang , Shaohua Yang
发明人： Weijun Tan , Fan Zhang , Shaohua Yang
IPC分类号： G06F11/07
CPC分类号： G11B20/1889 , G11B20/10268
摘要： Various embodiments of the present invention provide systems and methods for media defect detection.

5. 发明申请

US20140032989A1 Symbol Selective Scaling With Parity Forcing 有权
标题翻译：符号选择性缩放与奇偶逼迫
公开(公告)号：US20140032989A1
公开(公告)日：2014-01-30
申请号：US13560737
申请日：2012-07-27
申请人： Weijun Tan , Shaohua Yang , Kelly K. Fitzpatrick , Xuebin Wu , Fan Zhang
发明人： Weijun Tan , Shaohua Yang , Kelly K. Fitzpatrick , Xuebin Wu , Fan Zhang
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/05 , G06F11/1076 , G11B20/1833 , H03M13/1111 , H03M13/1128 , H03M13/6331 , H03M13/6343 , H03M13/658 , H04B15/00
摘要： The present inventions are related to systems and methods for data processing, and more particularly to systems and methods for data processing systems with symbol selective scaling interacting with parity forcing.
摘要翻译：本发明涉及用于数据处理的系统和方法，更具体地涉及具有与奇偶校验强迫交互的符号选择性缩放的数据处理系统的系统和方法。

6. 发明授权

US08411537B2 Systems and methods for recovering information from a defective medium 有权
标题翻译：从缺陷介质中恢复信息的系统和方法
公开(公告)号：US08411537B2
公开(公告)日：2013-04-02
申请号：US12399750
申请日：2009-03-06
申请人： Weijun Tan , Kelly Fitzpatrick , Shaohua Yang
发明人： Weijun Tan , Kelly Fitzpatrick , Shaohua Yang
IPC分类号： G06F11/20
CPC分类号： G11B20/1803 , G11B2220/2512 , H03M13/1105 , H03M13/2957 , H03M13/6343
摘要： Various embodiments of the present invention provide systems and methods for data regeneration. For example, a system for regenerating data is disclosed. The system includes a media defect detector that is operable to identify a potential media defect associated with a medium from which an input signal is derived, an attenuation amplitude detector that generates an attenuation factor, and a data detector. The data detector includes a first data path and a second data path. The first data path includes a bank of two or more selectable noise prediction filters and the second data path includes a fixed noise prediction filter and the attenuation factor. The data detector processes a derivative of the input signal using the second data path when the potential media defect is indicated, and processes the derivative of the input signal using the first data path when a media defect is not indicated.
摘要翻译：本发明的各种实施例提供了用于数据再生的系统和方法。例如，公开了一种用于再生数据的系统。该系统包括媒体缺陷检测器，其可操作以识别与从其导出输入信号的介质相关联的潜在介质缺陷，产生衰减因子的衰减幅度检测器和数据检测器。数据检测器包括第一数据路径和第二数据路径。第一数据路径包括一组两个或多个可选择的噪声预测滤波器，并且第二数据路径包括固定噪声预测滤波器和衰减因子。当指示潜在介质缺陷时，数据检测器使用第二数据路径处理输入信号的导数，并且当没有指示介质缺陷时，使用第一数据路径处理输入信号的导数。

7. 发明申请

US20120284585A1 Systems and Methods for Queue Based Data Detection and Decoding 有权
标题翻译：基于队列数据检测和解码的系统和方法
公开(公告)号：US20120284585A1
公开(公告)日：2012-11-08
申请号：US13547940
申请日：2012-07-12
申请人： Shaohua Yang , Hao Zhong , Weijun Tan , Richard Rauschmayer , Yuan Xing Lee
发明人： Shaohua Yang , Hao Zhong , Weijun Tan , Richard Rauschmayer , Yuan Xing Lee
IPC分类号： H03M13/29 , G06F11/10
CPC分类号： H03M13/2987 , G11B20/18 , G11B2020/185 , G11B2220/2516 , H03M13/09 , H03M13/1102 , H03M13/1111 , H03M13/15 , H03M13/1515 , H03M13/27 , H03M13/3905 , H03M13/4146 , H03M13/6331 , H03M13/6337 , H04L1/005 , H04L1/0057 , H04L1/0065
摘要： Various embodiments of the present invention provide systems and methods for variable iteration data processing.
摘要翻译：本发明的各种实施例提供了用于可变迭代数据处理的系统和方法。

8. 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。

9. 发明授权

US08281214B2 Programmable quasi-cyclic low-density parity check (QC LDPC) encoder for read channel 有权
标题翻译：用于读通道的可编程准循环低密度奇偶校验（QC LDPC）编码器
公开(公告)号：US08281214B2
公开(公告)日：2012-10-02
申请号：US12288221
申请日：2008-10-17
申请人： Shaohua Yang , Changyou Xu , Richard Rauschmayer , Hao Zhong , Weijun Tan
发明人： Shaohua Yang , Changyou Xu , Richard Rauschmayer , Hao Zhong , Weijun Tan
IPC分类号： H03M13/00
CPC分类号： H03M13/05 , G06F11/1008 , H03M13/116 , H03M13/2792
摘要： The present invention is a programmable QC LDPC encoder for encoding user data. The encoder may be configurable for implementation with a read channel. The encoder may include a plurality of barrel shifter circuits. The barrel shifter circuits are configured for generating a plurality of parity bits based on interleaved user bits received by the encoder. The barrel shifter circuits are further configured for outputting the parity bits. The encoder may further include an encoder interleaver memory. The encoder interleaver memory may be communicatively coupled with the barrel shifter circuits and may receive the parity bits output from the barrel shifter circuits. The encoder interleaver may be configured for interleaving the parity bits. Further, the encoder may be configured for outputting the interleaved parity bits to a multiplexer. The barrel shifter circuits may generate the plurality of parity bits via an encoding algorithm: p=u*GT.
摘要翻译：本发明是用于编码用户数据的可编程QC LDPC编码器。编码器可以被配置为用读通道实现。编码器可以包括多个桶形移位器电路。桶形移位器电路被配置为基于由编码器接收的交织的用户比特生成多个奇偶校验位。桶形移位器电路还被配置为输出奇偶校验位。编码器还可以包括编码器交织器存储器。编码器交织器存储器可以与桶形移位器电路通信耦合，并且可以接收从桶形移位器电路输出的奇偶校验位。编码器交织器可以被配置为交织奇偶校验位。此外，编码器可以被配置为将交错的奇偶校验位输出到多路复用器。桶形移位器电路可以通过编码算法生成多个奇偶校验位：p = u * GT。

10. 发明授权

US08149527B2 Systems and methods for reducing attenuation of information derived from a defective medium 有权
标题翻译：用于减少从有缺陷介质得到的信息衰减的系统和方法
公开(公告)号：US08149527B2
公开(公告)日：2012-04-03
申请号：US12111889
申请日：2008-04-29
申请人： Weijun Tan , Hao Zhong , Yuan Xing Lee , Richard Rauschmayer , Shaohua Yang , Harley Burger , Kelly Fitzpatrick , Changyou Xu
发明人： Weijun Tan , Hao Zhong , Yuan Xing Lee , Richard Rauschmayer , Shaohua Yang , Harley Burger , Kelly Fitzpatrick , Changyou Xu
IPC分类号： G11B5/02 , G11B27/36 , G11B5/09
CPC分类号： G11B20/18 , G11B20/10009 , G11B20/10287 , G11B20/10296 , H03M13/3905 , H03M13/3961 , H03M13/4146 , H03M13/6343 , H03M13/658
摘要： Various embodiments of the present invention provide systems and methods for data regeneration. For example, a method for data regeneration is disclosed that includes receiving a data input derived from a medium, determining a media defect corresponding to the data input, and determining an attenuation factor associated with the defective medium. Based at least in part on the determination that the medium is defective, amplifying the data input by a derivative of the attenuation factor to regenerate the data.
摘要翻译：本发明的各种实施例提供了用于数据再生的系统和方法。例如，公开了一种用于数据再生的方法，包括接收从介质导出的数据输入，确定与数据输入相对应的介质缺陷，以及确定与缺陷介质相关联的衰减因子。至少部分地基于介质有缺陷的确定，通过衰减因子的导数来放大输入的数据以再生数据。

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