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61. 发明授权

US08484535B2 Error-floor mitigation of codes using write verification 有权
标题翻译：使用写入验证的错误代码减少代码
公开(公告)号：US08484535B2
公开(公告)日：2013-07-09
申请号：US12994288
申请日：2009-04-21
申请人： Nils Graef , Kiran Gunnam
发明人： Nils Graef , Kiran Gunnam
IPC分类号： G11C29/00
CPC分类号： H03M13/1102 , G06F11/1012 , G11B20/1833 , G11B2020/1823 , G11B2020/185 , G11B2220/2516 , G11B2220/61 , H03M13/1108 , H03M13/1142 , H03M13/455
摘要： Executed when a channel input (e.g., LDPC) codeword is written to a storage medium, a write-verification method (i) compares the channel input codeword to the written codeword, (ii) identifies any erroneous bits, and (iii) stores the erroneous-bit indices to a record in a table. At some later time, the written codeword is read and sent to a decoder. If the decoder fails with a near codeword, a write-error recovery process searches the table and retrieves the erroneous-bit information. The codeword bits at those indices are adjusted, and the modified codeword is submitted to further processing.
摘要翻译：当通道输入（例如，LDPC）码字被写入存储介质时执行，写入验证方法（i）将信道输入码字与写入的码字进行比较，（ii）识别任何错误比特，以及（iii）表中记录的错误位索引。在稍后的时间，写入的码字被读取并发送到解码器。如果解码器出现接近码字失败，则写入错误恢复过程将搜索表并检索错误位信息。调整这些索引处的码字比特，并且修改的码字被提交进一步处理。

62. 发明授权

US08397137B2 Method of decoding content data blocks, corresponding computer program product and decoding device 有权
标题翻译：解码内容数据块的方法，对应的计算机程序产品和解码装置
公开(公告)号：US08397137B2
公开(公告)日：2013-03-12
申请号：US13443824
申请日：2012-04-10
申请人： Laurent Frouin , Philippe Le Bars
发明人： Laurent Frouin , Philippe Le Bars
IPC分类号： H03M13/00
CPC分类号： H04L1/0045 , H03M13/154 , H03M13/23 , H03M13/2936 , H03M13/455 , H03M13/618 , H04L1/0057 , H04L2001/0097 , H04R2420/07 , H04S3/008
摘要： When decoding a set of symbols to be decoded, several data blocks representative of the set of symbols to be decoded are received by a decoding node of a communications network. The data blocks are encoded using an error correction code enabling a decoding by erasure. The decoding node performs the following steps: first selecting at least one of the data blocks, first determining first erasures, and checking whether the number of the first erasures is below a given threshold. In a case the check is positive, the decoding node performs first decoding by erasure of the set of symbols to be decoded. In a case the check is negative, the decoding node performs second selecting of at least one of the data blocks, second determining second erasures, and second decoding by erasure of the set of symbols to be decoded from the second erasures.
摘要翻译：当对要解码的一组符号进行解码时，由通信网络的解码节点接收表示要解码的符号组的几个数据块。使用能够通过擦除进行解码的纠错码对数据块进行编码。解码节点执行以下步骤：首先选择数据块中的至少一个，首先确定第一擦除，以及检查第一擦除次数是否低于给定阈值。在检查为正的情况下，解码节点通过擦除要解码的符号集来执行第一解码。在检查为否定的情况下，解码节点通过从第二擦除擦除要解码的符号集合来执行数据块中的至少一个，第二确定第二擦除和第二解码的第二选择。

63. 发明申请

US20130061113A1 METHOD OF CORRECTING ERRORS AND MEMORY DEVICE USING THE SAME 审中-公开
标题翻译：使用该方法校正错误和存储器件的方法
公开(公告)号：US20130061113A1
公开(公告)日：2013-03-07
申请号：US13599467
申请日：2012-08-30
申请人： Kwan-Ho KIM , Seung-Hyun SONG
发明人： Kwan-Ho KIM , Seung-Hyun SONG
IPC分类号： H03M13/29 , G06F11/10
CPC分类号： H03M13/3746 , G06F11/1048 , H03M13/373 , H03M13/451 , H03M13/455 , H03M13/458 , H03M13/49
摘要： A method of correcting errors includes receiving a codeword including main data and parity data stored in a memory cell array to perform an error check and correction (ECC) decoding on the codeword and selectively performing an error correction on the codeword based on a result of the ECC decoding using asymmetry of error occurrence of the main data.
摘要翻译：纠正错误的方法包括：接收包含存储在存储单元阵列中的主数据和奇偶校验数据的码字，以对码字执行错误校验和纠错（ECC）解码，并且基于该码字的结果选择性地执行纠错 ECC解码使用不对称的主要数据发生错误。

64. 发明授权

US07900125B1 Majority detection in error recovery 有权
标题翻译：多数检测错误恢复
公开(公告)号：US07900125B1
公开(公告)日：2011-03-01
申请号：US11606416
申请日：2006-11-30
申请人： Jingfeng Liu , Bernardo Rub , Peihui Zheng
发明人： Jingfeng Liu , Bernardo Rub , Peihui Zheng
IPC分类号： G06F11/00
CPC分类号： H03M13/43 , G06F11/1048 , H03M13/1515 , H03M13/3723 , H03M13/45 , H03M13/453 , H03M13/455 , H03M13/6306
摘要： One or more techniques provide majority detection in error recovery. Accordingly, a device retries reading an ECC codeword having one or more bits for a plurality of retries, and stores each retry. The device (“hard” majority detection) votes on a value of each bit of the codeword based on a majority of corresponding retry values in the plurality of corresponding retries. Also, the device (“soft” majority detection) may determine reliability information for a value of each bit of the codeword based on a reoccurrence ratio of corresponding retry values in the plurality of retries. The device may declare erasures based on the reliability information and a (dynamically adjusted) threshold of uncertainty, e.g., where an “uncertain” bit based on the threshold or any symbol with an “uncertain” bit is declared as an erasure.
摘要翻译：一个或多个技术在错误恢复中提供多数检测。因此，设备重试读取具有多个重试的一个或多个比特的ECC码字，并且存储每个重试。设备（“硬”多数检测）基于多个对应重试中的大部分相应的重试值，对代码字的每个位的值进行投票。此外，设备（“软”多数检测）可以基于多个重试中的相应重试值的再次发生率来确定码字的每个比特的值的可靠性信息。设备可以基于可靠性信息和（动态调整的）不确定性阈值来声明擦除，例如，其中基于阈值的“不确定”位或具有“不确定”位的任何符号被声明为擦除的情况。

65. 发明申请

US20100174969A1 ERROR-LOCATOR-POLYNOMIAL GENERATION WITH ERASURE SUPPORT 有权
标题翻译：具有擦除支持的错误定位器 - 多项式生成
公开(公告)号：US20100174969A1
公开(公告)日：2010-07-08
申请号：US12651392
申请日：2009-12-31
申请人： VINCENT BRENDAN ASHE , HAKAN C. OZDEMIR , RAZMIK KARABED , RICHARD BARNDT
发明人： VINCENT BRENDAN ASHE , HAKAN C. OZDEMIR , RAZMIK KARABED , RICHARD BARNDT
IPC分类号： H03M13/07 , G06F11/10
CPC分类号： H03M13/154 , G11B20/1833 , G11B2020/1836 , G11B2220/2516 , H03M13/152 , H03M13/153 , H03M13/1545 , H03M13/41 , H03M13/455 , H03M13/6343
摘要： A system and method for correcting errors in an ECC block using erasure-identification data when generating an error-locator polynomial. In an embodiment, a ECC decoding method, uses “erasure” data indicative of bits of data that are unable to be deciphered by a decoder. Such a method may use an Berlekamp-Massey algorithm that receives two polynomials as inputs; a first polynomial indicative of erasure location in the stream of bits and a syndrome polynomial indicative of all bits as initially determined. The Berlekamp-Massey algorithm may use the erasure identification information to more easily decipher the overall codeword when faced with a error-filled codeword.
摘要翻译：一种用于在生成错误定位多项式时使用擦除识别数据来校正ECC块中的错误的系统和方法。在一个实施例中，ECC解码方法使用指示不能被解码器解密的数据位的“擦除”数据。这种方法可以使用接收两个多项式作为输入的Berlekamp-Massey算法; 指示比特流中的擦除位置的第一多项式和指示最初确定的所有比特的校正子多项式。 Berlekamp-Massey算法可以使用擦除识别信息在面对错误填充码字时更容易地破译整个码字。

66. 发明申请

US20090292975A1 METHOD AND APPARATUS FOR ITERATIVE ERROR-ERASURE DECODING 有权
标题翻译：用于迭代错误解码的方法和装置
公开(公告)号：US20090292975A1
公开(公告)日：2009-11-26
申请号：US12533484
申请日：2009-07-31
申请人： Erich Franz Haratsch
发明人： Erich Franz Haratsch
IPC分类号： H03M13/00 , G06F7/06
CPC分类号： H03M13/455 , H03M13/154
摘要： Methods and apparatus are provided for improved iterative error-erasure decoding. A signal is decoded by obtaining a plurality of symbols associated with the signal and one or more corresponding reliability values; generating at least one erasure list comprised of L symbols and at least one shortened erasure list comprised of L′ symbols, where L′ is less than L; and constructing an erasure set by taking erasures from at least one of the erasure list and the shortened erasure list. A signal is also processed by generating one or more reliability values using a soft-output detector; generating an erasure list of symbols by comparing the reliability values to at least one reliability threshold value (or by sorting); and performing error erasure decoding using the erasure list. The size of the erasure list can optionally be adjusted using feedback information.
摘要翻译：提供了改进的迭代误差解码方法和装置。通过获得与该信号相关联的多个符号和一个或多个相应的可靠性值来解码信号; 生成由L个符号构成的至少一个擦除列表和由L'个符号组成的至少一个缩短的擦除列表，其中L'小于L; 以及通过从所述擦除列表和所述缩短删除列表中的至少一个进行擦除来构造擦除集合。还通过使用软输出检测器产生一个或多个可靠性值来处理信号; 通过将可靠性值与至少一个可靠性阈值（或通过排序）进行比较来生成符号擦除列表; 并使用擦除列表执行错误擦除解码。可以选择使用反馈信息来调整擦除列表的大小。

67. 发明申请

US20090254796A1 Techniques for correcting errors and erasures using a single-shot generalized minimum distance key equation solver 有权
标题翻译：使用单次广义最小距离密钥方程求解器纠正错误和擦除的技术
公开(公告)号：US20090254796A1
公开(公告)日：2009-10-08
申请号：US12099532
申请日：2008-04-08
申请人： Martin Hassner , Travis Roger Oenning , Richard Leo Galbraith
发明人： Martin Hassner , Travis Roger Oenning , Richard Leo Galbraith
IPC分类号： H03M13/00
CPC分类号： H03M13/455 , H03M13/1515 , H03M13/1525 , H03M13/154
摘要： A system corrects errors in a codeword. The system includes a channel that sorts reliability numbers of symbols in the codeword to create an ordered list of candidate erasure locations. The system also includes a generalized minimum distance decoder that iteratively processes the ordered list of candidate erasure locations and at least two syndromes of the codeword using a single-shot key equation solver to generate an error locator polynomial and an error evaluator polynomial. The generalized minimum distance decoder processes the least reliable candidate erasure locations first within the ordered list of candidate erasure locations.
摘要翻译：系统校正码字中的错误。该系统包括对码字中的符号的可靠性数量进行排序以创建候选擦除位置的有序列表的信道。该系统还包括广义最小距离解码器，其使用单次密钥方程求解器迭代地处理候选擦除位置的有序列表和码字的至少两个校验子，以生成错误定位器多项式和误差评估器多项式。广义最小距离解码器首先在候选擦除位置的有序列表中处理最不可靠的候选擦除位置。

68. 发明申请

US20090037789A1 METHOD OF DECODING CONTENT DATA BLOCKS, CORRESPONDING COMPUTER PROGRAM PRODUCT AND DECODING DEVICE 有权
标题翻译：解码内容数据块的方法，相应的计算机程序产品和解码设备
公开(公告)号：US20090037789A1
公开(公告)日：2009-02-05
申请号：US12180632
申请日：2008-07-28
申请人： Laurent Frouin , Philippe Le Bars
发明人： Laurent Frouin , Philippe Le Bars
IPC分类号： H03M13/05 , G06F11/07
CPC分类号： H04L1/0045 , H03M13/154 , H03M13/23 , H03M13/2936 , H03M13/455 , H03M13/618 , H04L1/0057 , H04L2001/0097 , H04R2420/07 , H04S3/008
摘要： It is proposed a method of decoding a set of symbols to be decoded, several data blocks representative of the set of symbols to be decoded being received by a decoding node of a communications network. The data blocks are encoded by means of an error correction code enabling a decoding by erasure. The decoding node performs the following steps: a first selecting step of selecting at least one of the data blocks, a first determining step of determining first erasures, a checking step of checking whether the number of the first erasures is below a given threshold. In the event of positive determining, the decoding node performs a first decoding step of decoding by erasure of the set of symbols to be decoded. If not it performs a second selecting step of selecting at least one of the data blocks, a second determining step of determining second erasures, and a second decoding step of decoding by erasure of the set of symbols to be decoded from the second erasures.
摘要翻译：提出了一种对要解码的符号集合进行解码的方法，代表要解码的符号集合的几个数据块由通信网络的解码节点接收。数据块通过能够通过擦除进行解码的纠错码进行编码。解码节点执行以下步骤：选择数据块中的至少一个数据块的第一选择步骤，确定第一擦除的第一确定步骤，检查第一擦除次数是否低于给定阈值的检查步骤。在正确判定的情况下，解码节点执行第一解码步骤，通过擦除要解码的符号集合进行解码。如果不是，则执行选择数据块中的至少一个，确定第二擦除的第二确定步骤的第二选择步骤和通过从第二擦除擦除要解码的符号集合进行解码的第二解码步骤。

69. 发明申请

US20060248435A1 Method and apparatus for iterative error-erasure decoding 有权
公开(公告)号：US20060248435A1
公开(公告)日：2006-11-02
申请号：US11119038
申请日：2005-04-29
申请人： Erich Haratsch
发明人： Erich Haratsch
IPC分类号： H03M13/00
CPC分类号： H03M13/455 , H03M13/154
摘要： Methods and apparatus are provided for improved iterative error-erasure decoding. A signal is decoded by obtaining a plurality of symbols associated with the signal and one or more corresponding reliability values; generating at least one erasure list comprised of L symbols and at least one shortened erasure list comprised of L′ symbols, where L′ is less than L; and constructing an erasure set by taking erasures from at least one of the erasure list and the shortened erasure list. A signal is also processed by generating one or more reliability values using a soft-output detector; generating an erasure list of symbols by comparing the reliability values to at least one reliability threshold value (or by sorting); and performing error erasure decoding using the erasure list. The size of the erasure list can optionally be adjusted using feedback information.

70. 发明授权

US10868571B2 Adaptive-SCL polar decoder 有权
公开(公告)号：US10868571B2
公开(公告)日：2020-12-15
申请号：US16355425
申请日：2019-03-15
申请人： Sequans Communications S.A.
发明人： Michal Palgy
IPC分类号： H03M13/37 , H03M13/13 , H03M13/45
CPC分类号： H03M13/3707 , H03M13/13 , H03M13/455
摘要： A method of dynamically changing the list size of a successive cancellation list (SCL) decoder, the SCL decoder arranged to decode data received from a wireless communications system, the method comprising at each successive cancellation stage of the SCL decoder, determining a path metric of each path of the SCL decoder, selecting a differential path metric threshold, and dynamically changing the list size of the SCL decoder based on the differential path metric threshold and the path metric of each path of the cancellation stage, such that decoding sensitivity of the decoder is maintained and/or latency and error-correction performance of the decoder are balanced.

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