专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明申请

US20120233524A1 LOW-DENSITY PARITY CHECK CODES FOR HOLOGRAPHIC STORAGE 有权
标题翻译：低密度奇偶校验码用于全息存储
公开(公告)号：US20120233524A1
公开(公告)日：2012-09-13
申请号：US13475848
申请日：2012-05-18
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： H03M13/11 , G06F11/10
CPC分类号： H03M13/116 , G11B20/1833 , G11B2020/185 , G11B2220/2504 , G11B2220/2508 , H03M13/036 , H03M13/6516
摘要： Systems and methods for constructing low-density parity check codes for holographic storage are provided. The methods include selecting parameters of a low-density parity check code, determining the number of bit processing elements and the amount of memory in an accompanying decoder, and constructing a mother matrix representation of a quasi-cyclic parity check matrix. The low-density parity check codes are optimized for performance, memory considerations, and throughput.
摘要翻译：提供了构建用于全息存储的低密度奇偶校验码的系统和方法。所述方法包括选择低密度奇偶校验码的参数，确定伴随的解码器中的比特处理元素的数量和存储量，以及构造准循环奇偶校验矩阵的母矩阵表示。针对性能，内存考虑和吞吐量优化了低密度奇偶校验码。

52. 发明授权

US08190963B1 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：US08190963B1
公开(公告)日：2012-05-29
申请号：US12127669
申请日：2008-05-27
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 includes receiving a detected sequence representing a signal on a channel. The detected sequence includes data bits and one or more error detection code bits. One or more error indications are received for the detected sequence. Each of the one or more error indications identifies one of the data bits of the detected sequence that may have an erroneous value. Errors are detected in the detected sequence based on the error detection code bits in the detected sequence. When errors are detected in the detected sequence, a candidate sequence is generated based on the detected sequence and the one or more error indications.
摘要翻译：一种方法包括接收表示信道上的信号的检测到的序列。所检测的序列包括数据位和一个或多个错误检测码位。为检测到的序列接收一个或多个错误指示。一个或多个错误指示中的每一个标识可能具有错误值的检测到的序列的数据位之一。基于检测到的序列中的错误检测码位，检测到的序列中检测到错误。当在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产生候选序列。

53. 发明授权

US08040953B2 Reliability metric generation for trellis-based detection and/or decoding 有权
标题翻译：基于网格检测和/或解码的可靠性度量生成
公开(公告)号：US08040953B2
公开(公告)日：2011-10-18
申请号：US11524789
申请日：2006-09-20
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： H04N11/04 , G06K9/00 , H03M13/03
CPC分类号： H03M13/4153 , H03M13/098 , H03M13/2933 , H04L25/03203 , H04L25/067
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 computes soft reliability information for each detected/decoded bit or codeword syndrome value.
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，所公开的技术为每个检测/解码的比特或码字综合征值计算软可靠性信息。

54. 发明授权

US07751505B1 LDPC encoder and encoder and method thereof 有权
标题翻译： LDPC编码器及其编码器及其方法
公开(公告)号：US07751505B1
公开(公告)日：2010-07-06
申请号：US12273100
申请日：2008-11-18
申请人： Zining Wu , Gregory Burd
发明人： Zining Wu , Gregory Burd
IPC分类号： H04L27/06
CPC分类号： H04L25/03057 , H03M13/1105 , H04L1/005 , H04L1/0052 , H04L1/0057 , H04L25/067
摘要： A decoder for decoding low-density parity-check codes includes a first calculator that calculates ιιrRml, for each parity check equation, at iteration i−1. A second calculator calculates ιιrQιm, for each parity check equation, at iteration i. ιιrQιm represents information from bit node I to equation node m, one for each connection. ιιrRml represents information from equation node m to bit node I, one for each connection. The first calculator is responsive to the second calculator.
摘要翻译：用于解码低密度奇偶校验码的解码器包括：对于每个奇偶校验方程，在迭代i-1处，计算ιIrRml的第一计算器。第二个计算器在迭代i对每个奇偶校验方程计算ιιrQιm。 ιιrQιm表示从位节点I到方程节点m的信息，每个连接一个。 ιιrRml表示从等式节点m到位节点I的信息，每个连接一个。第一个计算器响应第二个计算器。

55. 发明授权

US07372652B1 Correcting errors in disk drive read back signals by iterating with the Reed-Solomon decoder 有权
标题翻译：纠正磁盘驱动器中的错误，通过Reed-Solomon解码器进行迭代来读回信号
公开(公告)号：US07372652B1
公开(公告)日：2008-05-13
申请号：US11217349
申请日：2005-09-02
申请人： Gregory Burd , Zining Wu , Mats Oberg , Pantas Sutardja
发明人： Gregory Burd , Zining Wu , Mats Oberg , Pantas Sutardja
IPC分类号： G11B5/09
CPC分类号： G11B20/18
摘要： A read channel includes a signal receiver that receives a read back signal and a signal detector to detect symbols in the read back signal. The signal detector includes a first detector that generates raw decisions as a function of the read back signal, a post processor that identifies possible defects in the raw decisions, a selector that independently receives the raw decisions and a list of the possible defects from the first detector and the post processor, respectively, and a decoder that generates final decisions based on the raw decisions and the possible defects identified by the post processor. The decoder performs at least one of Reed-Solomon decoding, Bose Chaudhuri Hocquerghen (BCH) decoding and Hamming Decoding.
摘要翻译：读通道包括接收回读信号的信号接收器和用于检测回读信号中的符号的信号检测器。信号检测器包括：第一检测器，其根据回读信号产生原始判定;识别原始判定中的可能缺陷的后处理器;独立地接收原始判定的选择器和来自第一检测器和后处理器，以及解码器，其基于原始决策和由后处理器识别的可能缺陷产生最终决定。解码器执行Reed-Solomon解码，Bose Chaudhuri Hocquerghen（BCH）解码和汉明解码中的至少一个。

56. 发明申请

US20080008272A1 Reliability metric generation for trellis-based detection and/or decoding 有权
标题翻译：基于网格检测和/或解码的可靠性度量生成
公开(公告)号：US20080008272A1
公开(公告)日：2008-01-10
申请号：US11524789
申请日：2006-09-20
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： H04L27/06
CPC分类号： H03M13/4153 , H03M13/098 , H03M13/2933 , H04L25/03203 , H04L25/067
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 computes soft reliability information for each detected/decoded bit or codeword syndrome value.
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，所公开的技术为每个检测/解码的比特或码字综合征值计算软可靠性信息。

57. 发明授权

US07274524B1 Correcting errors in disk drive read back signals by iterating with the reed-solomon decoder 有权
标题翻译：纠正磁盘驱动器中的错误，通过使用reed-solomon解码器进行迭代来读回信号
公开(公告)号：US07274524B1
公开(公告)日：2007-09-25
申请号：US11090209
申请日：2005-03-28
申请人： Gregory Burd , Zining Wu , Mats Oberg , Pantas Sutardja
发明人： Gregory Burd , Zining Wu , Mats Oberg , Pantas Sutardja
IPC分类号： G11B5/09
CPC分类号： G11B20/18
摘要： A signal detector to detect symbols in a read back signal. The signal detector includes a first detector to generate raw decisions as a function of the read back signal. A post processor identifies possible defects in the raw decisions. A selector selects a portion of the possible defects and generates modified decisions based upon correcting the portion of the possible defects. At least one signal decoder generates final decisions as a function of the modified and raw decisions. A decision block returns control to the selector in response to detecting excess errors in the final decisions.
摘要翻译：用于检测回读信号中的符号的信号检测器。信号检测器包括用于根据回读信号产生原始判定的第一检测器。后处理器识别原始决策中的可能缺陷。选择器选择可能缺陷的一部分，并且基于校正可能的缺陷的一部分来产生修改的决定。至少一个信号解码器根据修改和原始决策生成最终决定。响应于检测到最终决定中的多余错误，决策块将控制权返回给选择器。

58. 发明授权

US07184486B1 LDPC encoder and decoder and method thereof 有权
标题翻译： LDPC编码器及其解码器及其方法
公开(公告)号：US07184486B1
公开(公告)日：2007-02-27
申请号：US09730603
申请日：2000-12-07
申请人： Zining Wu , Gregory Burd
发明人： Zining Wu , Gregory Burd
IPC分类号： H04L23/02 , H04L5/12
CPC分类号： H04L25/03057 , H03M13/1105 , H04L1/005 , H04L1/0052 , H04L1/0057 , H04L25/067
摘要： A method of decoding low-density parity-check codes comprises a first step that includes calculating └└rRml, for each parity check equation, at iteration i−1, in response to a third step. A second step includes decision aided equalizing, at iteration i, in response to the first step. The third step includes calculating └└rQ└m, for each parity check equation, at iteration i in response to the second step, wherein └└rQ└m represents information from bit node l to equation node m, one for each connection, and wherein └└rRml represents information from equation node m to bit node l, one for each connection.
摘要翻译：解码低密度奇偶校验码的方法包括第一步骤，响应于第三步骤，对于迭代i-1，针对每个奇偶校验方程计算└└rRml。第二步包括决策协调平衡，在迭代我响应第一步。第三步包括响应于第二步骤，在迭代i对每个奇偶校验公式计算└└rQ└m，其中，位节点l到等式节点m，每个连接一个，并且其中，Λ└R R ml>表示从方程节点m到比特节点l的信息，每个连接一个。

59. 发明授权

US09048879B1 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：US09048879B1
公开(公告)日：2015-06-02
申请号：US13586710
申请日：2012-08-15
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： H03M13/29 , H04L1/00
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. In some embodiments, 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. At least a portion of the first set of codewords preferably is divided into a plurality of symbols which are encoded based on the embedded parity code to provide encoded data. Similarly, in some embodiments, 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 preferably is used, together 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。在一些实施例中，在传输侧，在输入节点处接收的输入信号基于交织的代码进行编码，该代码编码输入数据的交错版本以产生第一组码字。第一组码字的至少一部分优选地被划分为多个符号，这些符号基于嵌入的奇偶校验码被编码以提供编码数据。类似地，在一些实施例中，在接收侧，检测所接收的数据以产生检测到的信息和软输出。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。解码的信息优选地与其他软信息一起被交织的解码器使用以产生用于偏置随后的解码迭代的可靠性度量。

60. 发明授权

US08583981B2 Concatenated codes for holographic storage 有权
标题翻译：全息存储连接码
公开(公告)号：US08583981B2
公开(公告)日：2013-11-12
申请号：US11955005
申请日：2007-12-12
申请人： Nedeljko Varnica , Gregory Burd , Seo-How Low , Lingyan Sun , Zining Wu
发明人： Nedeljko Varnica , Gregory Burd , Seo-How Low , Lingyan Sun , Zining Wu
IPC分类号： H03M13/00
CPC分类号： H03M13/116 , G06F11/1008 , H03M13/1102 , H03M13/152 , H03M13/2906 , H03M13/2957 , H03M13/2966 , H03M13/353 , H03M13/6561
摘要： Systems and methods for constructing concatenated codes for data storage channels, such as holographic storage channels, are provided. The concatenated codes include an outer BCH code and an inner iteratively decodable code, such as an LDPC code or turbo code. The correction power and coding rate of one or both of the codes may be programmable based on the channel characteristics and the desired SNR coding gain. The correction power and/or coding rate of the inner and/or outer code may also be dynamically adjusted in real-time to compensate for time-varying error conditions on the channel.
摘要翻译：提供了用于构建诸如全息存储通道的数据存储通道的级联代码的系统和方法。连接的代码包括外部BCH码和内部可迭代地解码的码，例如LDPC码或turbo码。一个或两个代码的校正功率和编码率可以基于信道特性和期望的SNR编码增益来编程。内部和/或外部代码的校正功率和/或编码率也可以被实时动态地调整以补偿信道上的时变误差条件。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式