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71. 发明授权

US07228485B1 Error correction using error detection codes 有权
标题翻译：使用错误检测代码进行纠错
公开(公告)号：US07228485B1
公开(公告)日：2007-06-05
申请号：US10752339
申请日：2004-01-06
申请人： Zining Wu , Gregory Burd
发明人： Zining Wu , Gregory Burd
IPC分类号： H03M13/00
CPC分类号： H03M13/2906 , H03M13/09 , H03M13/1515 , H03M13/19 , H03M13/451
摘要： A method, apparatus, and computer-readable media comprises receiving a detected sequence representing a signal on a channel, wherein the detected sequence comprises data bits and one or more error detection code bits; receiving one or more error indications for the detected sequence, each of the one or more error indications identifying one of the data bits of the detected sequence that may have an erroneous value; detecting errors in the detected sequence based on the error detection code bits in the detected sequence; and generating a candidate sequence based on the detected sequence and the one or more error indications when errors are detected in the detected sequence.
摘要翻译：方法，装置和计算机可读介质包括接收表示信道上的信号的检测到的序列，其中检测到的序列包括数据位和一个或多个错误检测码位; 接收所检测到的序列的一个或多个错误指示，所述一个或多个错误指示中的每一个识别检测到的序列中可能具有错误值的数据位之一; 基于检测到的序列中的错误检测码位检测检测到的序列中的错误; 以及当检测到的序列中检测到错误时，基于检测到的序列和一个或多个错误指示生成候选序列。

72. 发明授权

US07168033B1 Parity check matrix and method of forming thereof 有权
标题翻译：奇偶校验矩阵及其形成方法
公开(公告)号：US07168033B1
公开(公告)日：2007-01-23
申请号：US11281400
申请日：2005-11-18
申请人： Zining Wu , Gregory Burd
发明人： Zining Wu , Gregory Burd
IPC分类号： H03M13/00 , G06F11/00
CPC分类号： H03M13/1177
摘要： A decoder for decoding data from a communication channel includes a parity check matrix including M tiers, wherein M≧B, Dmin=B*M for M=1 . . . E or B*M≧Dmin≧F for M>E. Dmin is the minimum Hamming distance and tc=M, wherein tc is a column weight. The parity check matrix includes no period-four cycles. B, Dmin, E, F and M are integers. A soft channel decoder is configured to decode data. A soft linear block code decoder is configured to decode data decoded by the soft channel decoder in accordance with the parity check matrix.
摘要翻译：用于从通信信道解码数据的解码器包括包括M层的奇偶校验矩阵，其中对于M = 1，M> = B，D min min = B * M。。。对于M> E，E或B * M> = D分钟> = F。最小是最小汉明距离，其中t C是柱重。奇偶校验矩阵不包括周期四个周期。 B，D分钟，E，F和M是整数。软通道解码器被配置为对数据进行解码。软线性块码解码器被配置为根据奇偶校验矩阵对由软信道解码器解码的数据进行解码。

73. 发明授权

US08725929B1 Adaptive read and write systems and methods for memory cells 有权
标题翻译：自适应读写系统和存储单元的方法
公开(公告)号：US08725929B1
公开(公告)日：2014-05-13
申请号：US12350068
申请日：2009-01-07
申请人： Xueshi Yang , Zining Wu , Gregory Burd
发明人： Xueshi Yang , Zining Wu , Gregory Burd
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28
CPC分类号： G11C16/34 , G11C11/5628 , G11C11/5642 , G11C16/10 , G11C16/26 , G11C16/28 , G11C2211/5634
摘要： Adaptive memory read and write systems and methods are provided that may compute estimated means and variances of multi-level memory cells to facilitate writing and reading of data to and from the multi-level memory cells are described herein. The systems may include an apparatus comprising multi-level memory cells, and an estimation block configured to compute estimated means and variances of level distributions of the multi-level memory cells by processing signal samples provided by at least a subset of the multi-level memory cells, the estimated means and variances to be used to facilitate writing and/or reading of data to and/or from at least selected ones of the multi-level memory cells, the multi-level memory cells having M-levels where M is an integer greater than 1, and each of the level distributions is associated with a corresponding level of the M-levels.
摘要翻译：提供了自适应存储器读和写系统和方法，其可以计算多级存储器单元的估计平均值和方差，以便于向多层存储器单元写数据和从多级存储器单元读取数据。所述系统可以包括包括多级存储器单元的装置，以及估计块，被配置为通过处理由多级存储器的至少一个子集提供的信号样本来计算多级存储器单元的级分布的估计的装置和方差小区，用于促进向多层存储器单元中的至少一个选择的数据写入和/或读取数据的估计平均值和方差，具有M级的多级存储器单元，其中M是整数大于1，并且每个级别分布与M级的相应级别相关联。

74. 发明授权

US08516332B1 Methods and algorithms for joint channel-code decoding of linear block codes 有权
公开(公告)号：US08516332B1
公开(公告)日：2013-08-20
申请号：US13608390
申请日：2012-09-10
申请人： Gregory Burd , Zining Wu
发明人： Gregory Burd , Zining Wu
IPC分类号： H03M13/11
CPC分类号： G11B20/1833 , G11B2020/1836 , G11B2020/1843 , G11B2020/1853 , G11B2020/1859 , G11B2020/1863 , G11B2220/2516
摘要： Circuits, architectures, methods and algorithms for joint channel-code decoding of linear block codes, and more particularly, for identifying and correcting one or more errors in a code word and/or for encoding CRC (or parity) information. In one aspect, the invention focuses on use of (i) remainders, syndromes or other polynomials and (ii) Gaussian elimination to determine and correct errors. Although this approach may be suboptimal, the present error checking and/or detection scheme involves simpler computations and/or manipulations than conventional schemes, and is generally easier to implement logically. Since the complexity of parity-based error correction schemes increases disproportionately to the number of potential error events, the present invention meets a long-felt need for a scheme to manage error detection and/or correction in systems (such as magnetic recording applications) where there may be a relatively large number of likely error events, thereby advantageously improving reliability and/or performance in channel communications.

75. 发明授权

US08321763B1 Split sector recovery method 有权
标题翻译：拆分扇区恢复方法
公开(公告)号：US08321763B1
公开(公告)日：2012-11-27
申请号：US13410068
申请日：2012-03-01
申请人： Zining Wu , Gregory Burd , Nitin Nangare
发明人： Zining Wu , Gregory Burd , Nitin Nangare
IPC分类号： H03M13/00
CPC分类号： H03M13/373 , G11B20/10046 , G11B20/1217 , G11B2020/1282 , G11B2220/2516 , H03M13/00
摘要： Reproduction of encoded data which includes a split-mark. FIR data corresponding to split-mark and FIR data affected by the split-mark due to inter-symbol-interference are identified. FIR data corresponding to the split-mark is removed from the received FIR data. Recovered data is created by removing incorrect inter-symbol-interference from the FIR data due to the split-mark, and adding correct inter-symbol-interference from codeword bits. The recovered data is stitched together with data unaffected by split-mark data.
摘要翻译：包含分割标记的编码数据的再现。识别对应于分割标记的FIR数据和由于符号间干扰而受分割影响的FIR数据。对应于分割标记的FIR数据从接收到的FIR数据中去除。通过从分离标记去除来自FIR数据的不正确的符号间干扰，并从码字比特中添加正确的符号间干扰，创建恢复的数据。恢复的数据与不受分割标记数据影响的数据进行缝合。

76. 发明授权

US08255763B1 Error correction system using an iterative product code 有权
标题翻译：纠错系统使用迭代产品代码
公开(公告)号：US08255763B1
公开(公告)日：2012-08-28
申请号：US11937389
申请日：2007-11-08
申请人： Shaohua Yang , Zining Wu , Gregory Burd , Xueshi Yang , Hongwei Song , Nedeljko Varnica
发明人： Shaohua Yang , Zining Wu , Gregory Burd , Xueshi Yang , Hongwei Song , Nedeljko Varnica
IPC分类号： H03M13/00
CPC分类号： H03M13/2945 , H03M13/098 , H03M13/1102 , H03M13/1515 , H03M13/23 , H03M13/2909 , H03M13/2957 , H03M13/3746 , H04L1/0065
摘要： An error correction system includes an iterative code that employs an interleaved component code and an embedded parity component code. On the transmission side, input signals received at an input node are encoded based on the interleaved code, which encodes an interleaved version of the input data to produce a first set of codewords. A portion of the first set of codewords is divided into a plurality of symbols which are encoded based on the embedded parity code. On the receiving side, received data are detected to produce detected information and soft outputs. The detected information is decoded based on the embedded parity code to obtain decoded information. The decoded information is used with other soft information by an interleaved decoder to generate reliability metrics for biasing a subsequent decoding iteration.
摘要翻译：纠错系统包括使用交织分量代码和嵌入奇偶校验分量代码的迭代代码。在发送侧，在输入节点处接收的输入信号基于交织代码进行编码，该代码对输入数据的交织版本进行编码以产生第一组码字。第一组码字的一部分被分成多个符号，这些符号是基于嵌入的奇偶校验码进行编码的。在接收侧，检测接收到的数据以产生检测信息和软输出。检测到的信息根据嵌入的奇偶校验码进行解码以获得解码的信息。经解码的信息与交织的解码器的其他软信息一起使用以产生用于偏置随后的解码迭代的可靠性度量。

77. 发明授权

US08069391B1 Error correction using error detection codes 有权
标题翻译：使用错误检测代码进行纠错
公开(公告)号：US08069391B1
公开(公告)日：2011-11-29
申请号：US11828169
申请日：2007-07-25
申请人： Zining Wu , Gregory Burd
发明人： Zining Wu , Gregory Burd
IPC分类号： H03M13/00
CPC分类号： H03M13/2906 , H03M13/09 , H03M13/1515 , H03M13/19 , H03M13/451
摘要： A method, apparatus, and computer-readable media comprises receiving a detected sequence representing a signal on a channel, wherein the detected sequence comprises data bits and one or more error detection code bits; receiving one or more error indications for the detected sequence, each of the one or more error indications identifying one of the data bits of the detected sequence that may have an erroneous value; detecting errors in the detected sequence based on the error detection code bits in the detected sequence; and generating a candidate sequence based on the detected sequence and the one or more error indications when errors are detected in the detected sequence.
摘要翻译：方法，装置和计算机可读介质包括接收表示信道上的信号的检测到的序列，其中检测到的序列包括数据位和一个或多个错误检测码位; 接收所检测到的序列的一个或多个错误指示，所述一个或多个错误指示中的每一个识别检测到的序列中可能具有错误值的数据位之一; 基于检测到的序列中的错误检测码位检测检测到的序列中的错误; 以及当检测到的序列中检测到错误时，基于检测到的序列和一个或多个错误指示生成候选序列。

78. 发明授权

US08015224B1 Entropy source for random number generation 有权
标题翻译：随机数生成的熵源
公开(公告)号：US08015224B1
公开(公告)日：2011-09-06
申请号：US11949487
申请日：2007-12-03
申请人： Panu Chaichanavong , Tze Lei Poo , Zining Wu , Saeed Azimi , Gregory Burd
发明人： Panu Chaichanavong , Tze Lei Poo , Zining Wu , Saeed Azimi , Gregory Burd
IPC分类号： G06F7/58
CPC分类号： G06F7/588 , H04L9/0861
摘要： In a device having a data channel, in which random numbers are needed, such as a data storage device that uses random numbers to generate keys for cryptographic applications, random numbers are generated by a deterministic random bit generator seeded by bits derived from noise on the channel itself. The bits may be extracted from the least significant bits of the data signal after it is digitized, because those bits correspond to the noise in the signal. The extraction may occur immediately after digitization, or after subsequent filtering. A data signal emulator may be provided to simulate a data signal if a seed is required at a time when there is no data activity on the channel. The extracted bits may be post-processed to remove bias before the seed is provided to the deterministic random bit generator.
摘要翻译：在具有需要随机数的数据信道的装置中，例如使用随机数生成加密应用密钥的数据存储装置，随机数是由确定性随机比特发生器产生的，该确定性随机比特发生器由频道本身。在数字信号被数字化之后，可以从数据信号的最低有效位中提取位，因为这些位对应于信号中的噪声。提取可能在数字化后立即进行，或在后续过滤之后发生。如果在通道上没有数据活动的时候需要种子，则可以提供数据信号仿真器来模拟数据信号。提取的比特可以在将种子提供给确定性随机比特发生器之前进行后处理以去除偏差。

79. 发明授权

US07876860B1 Enhancements of soft decoders and detectors on asymmetric channels 有权
标题翻译：在非对称通道上增强软解码器和检测器
公开(公告)号：US07876860B1
公开(公告)日：2011-01-25
申请号：US11893810
申请日：2007-08-17
申请人： Nedeljko Varnica , Seo-How Low , Gregory Burd , Zining Wu
发明人： Nedeljko Varnica , Seo-How Low , Gregory Burd , Zining Wu
IPC分类号： H04L27/06
CPC分类号： H04L1/0054
摘要： Systems and methods for enhancing soft decoders and detectors on asymmetric channels are provided. The methods include acquiring log-likelihood ratios (LLRS) for error-correction code (ECC) encoded data symbols, selecting a quality measure function and a quality threshold based on the LLRs, applying the selected quality measure function to the LLRs to obtain quality measures, comparing the quality measures to the selected quality threshold, and updating the LLRs for selected ECC encoded data symbols based on the comparisons. The updating may occur by multiplying the LLRs for the selected ECC encoded data symbols by a selected scaling factor.
摘要翻译：提供了用于增强非对称通道上的软解码器和检测器的系统和方法。这些方法包括获取用于纠错码（ECC）编码数据符号的对数似然比（LLRS），基于LLR选择质量度量函数和质量阈值，将所选择的质量度量函数应用于LLR以获得质量度量将质量测量与所选质量阈值进行比较，并且基于比较来更新所选ECC编码数据符号的LLR。可以通过将所选ECC编码数据符号的LLR乘以所选择的缩放因子来进行更新。

80. 发明申请

US20100269026A1 ERROR PATTERN GENERATION FOR TRELLIS-BASED DETECTION AND/OR DECODING 有权
标题翻译：基于TRLLIS的检测和/或解码的错误模式生成
公开(公告)号：US20100269026A1
公开(公告)日：2010-10-21
申请号：US12824517
申请日：2010-06-28
申请人： Shaohua Yang , Seo-How Low , Zining Wu , Gregory Burd
发明人： Shaohua Yang , Seo-How Low , Zining Wu , Gregory Burd
IPC分类号： H03M13/41 , H03M13/03 , G06F11/00
CPC分类号： H03M13/4192 , H03M13/098 , H03M13/3994 , H03M13/4138 , H03M13/4161 , H03M13/4169
摘要： The disclosed technology provides systems and methods for identifying potential error locations, patterns, and likelihood metrics in connection with trellis-based detection/decoding. In one aspect of the invention, the disclosed technology detects information that was previously encoded based on a trellis, and decodes the detected information based on the trellis to provide decoded information. The decoded information corresponds to a winning path through the trellis that ends at a winning state. The disclosed technology can identify one or more alternate paths through the trellis that also end at the winning state, and can generate a potential error pattern for each of the alternate paths.
摘要翻译：所公开的技术提供用于识别与基于网格的检测/解码相关的潜在错误位置，模式和似然度量的系统和方法。在本发明的一个方面，所公开的技术检测先前基于网格编码的信息，并且基于网格对检测到的信息进行解码以提供解码信息。解码的信息对应于通过在获胜状态结束的网格的获胜路径。所公开的技术可以识别通过网格的一个或多个备选路径，其也以胜利状态结束，并且可以为每个备选路径生成潜在的错误模式。

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