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公开(公告)号：US20140327981A1
公开(公告)日：2014-11-06
申请号：US14266664
申请日：2014-04-30
发明人： Marcus Marrow , Jason Bellorado , Yu Kou
IPC分类号： G11B20/18
CPC分类号： G11B20/1833 , G11B20/1816 , G11B20/1879 , G11B2020/185 , H03M13/1111 , H03M13/612 , H03M13/6337
摘要： Determining a parameter associated with whether a portion of a storage device is defective is disclosed. Determining comprises: obtaining known data associated with the portion; reading back from the portion to produce a read-back waveform; decoding the read-back waveform, including producing statistical information; and determining a parameter associated with whether the portion is defective based at least in part on the statistical information.
摘要翻译： 公开了确定存储设备的一部分是否有缺陷的参数。 确定包括：获得与该部分相关联的已知数据; 从该部分读回以产生回读波形; 解码回读波形，包括产生统计信息; 以及至少部分地基于所述统计信息来确定与所述部分是否有缺陷相关联的参数。
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公开(公告)号：US20140189458A1
公开(公告)日：2014-07-03
申请号：US14146929
申请日：2014-01-03
发明人： Frederick K.H. Lee , Jason Bellorado , Zheng Wu , Marcus Marrow
IPC分类号： H03M13/11
CPC分类号： H03M13/1111 , G11B2020/185 , G11B2220/2508 , H03M13/612 , H03M13/6325 , H03M13/6343 , H04L1/0054 , H04L1/0057
摘要： A codebook which includes a plurality of messages and a plurality of codewords, a specified codeword bit value, and a specified message bit value are obtained. The LLR for bit ci in a codeword is generated, including by: identifying, from the codebook, those codewords where bit ci has the specified codeword bit value; for a message which corresponds to one of the codewords where bit ci has the specified codeword bit value, identifying those bits which have the specified message bit value; and summing one or more LLR values which correspond to those bits, in the message which corresponds to one of the codewords where bit ci has the specified codeword bit value, which have the specified message bit value.
摘要翻译： 获得包括多个消息和多个码字的码本，指定的码字比特值和指定的消息比特值。 产生码字中的比特ci的LLR，包括：从码本中识别比特ci具有指定码字比特值的那些码字; 对于与其中位ci具有指定码字比特值的码字之一相对应的消息，识别具有指定消息比特值的那些比特; 并且在对应于具有指定消息比特值的比特ci具有指定码字比特值的码字中的一个的消息中对与这些比特相对应的一个或多个LLR值求和。
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公开(公告)号：US09875157B2
公开(公告)日：2018-01-23
申请号：US14298736
申请日：2014-06-06
发明人： Yu Kou , Lingqi Zeng , Jason Bellorado , Marcus Marrow
CPC分类号： G06F11/1076 , G06F11/08 , G06F11/1012 , G11C29/56004 , H03M13/015 , H03M13/1102 , H03M13/154
摘要： A storage system includes a channel detector, an LDPC decoder, and an erasure block. The channel detector is configured to receive data corresponding to data read from a storage and output an LLR signal. The LDPC decoder is configured to receive the LLR signal and output a feedback signal to the channel detector. The erasure block is configured to erase at a portion of at least one of the LLR signal and the feedback signal. A method for testing includes generating an error rate function corresponding to an erasure pattern. The function is a function of a number of LDPC iterations. The method includes determining testing parameters at least in part based on the error rate function, wherein the testing parameters comprise a testing number of LDPC iterations, a passing error rate, and the erasure pattern. The method includes testing storage devices using the testing parameters.
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公开(公告)号：US09292394B2
公开(公告)日：2016-03-22
申请号：US14558486
申请日：2014-12-02
发明人： Yingquan Wu , Marcus Marrow
CPC分类号： G06F11/2053 , G06F11/1048 , G06F11/1068 , G11C11/5642 , G11C16/06 , G11C16/3454
摘要： An indication of a page type which failed error correction decoding is received. A threshold to adjust is selected from a plurality of thresholds based at least in part on the page type. A third adjusted threshold associated with the page type is generated, including by: determining a first number of flipped bits using a first adjusted threshold associated with the page type, determining a second number of flipped bits using a second adjusted threshold associated with the page type, and generating the third adjusted threshold using the first number of flipped bits and the second number of flipped bits.
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公开(公告)号：US09013817B2
公开(公告)日：2015-04-21
申请号：US14158468
申请日：2014-01-17
发明人： Jason Bellorado , Marcus Marrow
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/09 , G11B20/10046 , G11B2005/0002 , G11B2020/1238 , G11B2020/1292 , G11B2020/1298 , G11B2220/2516
摘要： Inter-track interference cancelation is disclosed, including: receiving an input sequence of samples associated with a track on magnetic storage; using a processor to generate inter-track interference (ITI) data associated with a first side track including by performing a correlation between the input sequence of samples and a sequence of data associated with the first side track.
摘要翻译： 公开了磁道间干扰消除，包括：接收与磁存储上的轨道相关联的样本的输入序列; 使用处理器来产生与第一侧轨道相关联的轨道间干扰（ITI）数据，该数据包括通过执行输入样本序列与与第一侧轨道相关联的数据序列之间的相关性。
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公开(公告)号：US20150052408A1
公开(公告)日：2015-02-19
申请号：US14531817
申请日：2014-11-03
IPC分类号： G06F11/07
CPC分类号： G06F11/076 , G06F3/0679 , G06F11/0727 , H03M13/1111 , H03M13/3927 , H03M13/45 , H04L1/0054
摘要： A plurality of bins and a plurality of soft read values are stored in a lookup table where those bins that are either a leftmost bin or a rightmost bin correspond to soft read values having a maximum magnitude. Bin identification information is received for a cell in solid state storage. A soft read value is generated for the cell in solid state storage, including by: accessing the lookup table, mapping the received bin identification information to one of the plurality of bins in the lookup table, and selecting the soft read value in the lookup table that corresponds to the bin which is mapped to.
摘要翻译： 多个箱和多个软读取值被存储在查找表中，其中那些最左边仓或最右边仓的仓对应于具有最大幅度的软读取值。 对于固态存储器中的单元接收箱标识信息。 生成固态存储器中的单元的软读取值，包括：访问查找表，将接收到的bin标识信息映射到查找表中的多个存储区之一，并在查找表中选择软读取值 对应于映射到的bin。
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37.发明授权Data independent error computation and usage with decision directed error computation 有权数据独立的误差计算和使用与决策定向误差计算公开(公告)号：US08924833B2
公开(公告)日：2014-12-30
申请号：US13963824
申请日：2013-08-09
发明人： Zheng Wu , Jason Bellorado , Marcus Marrow
CPC分类号： H04L1/0041 , G06F11/00 , H03G3/3052 , H03M13/1102 , H03M13/1515 , H03M13/3715 , H04L1/20
摘要： An analog front end is adjusted by determining a signal quality based at least in part on digital sample(s). If the signal quality satisfies one or more criteria, a data independent gain gradient and a data independent offset gradient are selected to adjust the analog front end, where the two gradients are generated without taking into consideration an instantaneous value of an expected signal. If the signal quality does not satisfy the criteria, a decision directed gain gradient and a decision directed offset gradient are selected to adjust the analog front end, where the two gradients are generated based at least in part on decision(s).
摘要翻译： 通过至少部分地基于数字样本确定信号质量来调整模拟前端。 如果信号质量满足一个或多个标准，则选择数据独立增益梯度和数据独立偏移梯度来调整模拟前端，其中在不考虑预期信号的瞬时值的情况下生成两个梯度。 如果信号质量不满足标准，则选择决策导向增益梯度和决策导向偏移梯度来调整模拟前端，其中至少部分地基于决策生成两个梯度。
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38.发明授权Decision directed and non-decision directed low frequency noise cancelation in turbo detection 有权涡轮检测中的决策指导和非决策指导的低频噪声消除公开(公告)号：US08902530B1
公开(公告)日：2014-12-02
申请号：US13826028
申请日：2013-03-14
发明人： Zheng Wu , Jason Bellorado , Naveen Kumar , Marcus Marrow
CPC分类号： G11B20/10009
摘要： A set of decisions is determined based at last in part on a set of samples. For a given sample in the set of samples, a low frequency noise estimate is estimated based at least in part on (1) at least some samples from the set of samples and (2) at least some decisions from the set of decisions. A reduced noise sample is generated by removing the low frequency noise estimate from the given sample.
摘要翻译： 最后一部分基于一组样本确定一组决策。 对于该组样本中的给定样本，至少部分地基于（1）来自该组样本的至少一些样本和（2）来自该组决策的至少一些决定来估计低频噪声估计。 通过从给定的样本中去除低频噪声估计值来产生降噪噪声样本。
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39.发明申请公开(公告)号：US20140325318A1
公开(公告)日：2014-10-30
申请号：US14266702
申请日：2014-04-30
发明人： Marcus Marrow , Rajiv Agarwal
IPC分类号： G06F11/10
CPC分类号： G06F11/1068 , G06F11/1012 , H03M13/1102 , H03M13/1515 , H03M13/152 , H03M13/2906 , H03M13/2927 , H03M13/2948
摘要： A first decoder performs decoding on each data set in a first plurality of data sets using a first code; each data set in the first plurality is stored on a different chip. It is determined if the first decoding is successful; if not, a second decoder performs a second decoding on each data set in a second plurality of data sets using a second code; each data set in the second plurality includes at least some data, after the first decoding using the first code, from each data set in the first plurality. The first decoder performs a third decoding on each data set in the first plurality using the first code, where each data set in the first plurality includes at least some data, after the second decoding using the second code, from each data set in the second plurality.
摘要翻译： 第一解码器使用第一码对第一多个数据集中的每个数据集进行解码; 第一组中的每个数据集存储在不同的芯片上。 确定第一解码是否成功; 如果不是，则第二解码器使用第二代码对第二多个数据集中的每个数据集执行第二解码; 在第二多个数据集中的每个数据集包括来自第一多个数据集中的每个数据集之后的至少一些数据，在使用第一代码的第一次解码之后。 第一解码器使用第一代码对第一多个中的每个数据集执行第三解码，其中在第二复制中的每个数据集之后，第一多个中的每个数据集包括至少一些数据，在使用第二代码的第二次解码之后， 复数。
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公开(公告)号：US20140173380A1
公开(公告)日：2014-06-19
申请号：US14172802
申请日：2014-02-04
发明人： Yingquan Wu , Marcus Marrow
IPC分类号： G06F11/10
CPC分类号： G06F11/2053 , G06F11/1048 , G06F11/1068 , G11C11/5642 , G11C16/06 , G11C16/3454
摘要： An indication of a page type which failed error correction decoding is received. A threshold to adjust is selected from a plurality of thresholds based at least in part on the page type. A third adjusted threshold associated with the page type is generated, including by: determining a first number of flipped bits using a first adjusted threshold associated with the page type, determining a second number of flipped bits using a second adjusted threshold associated with the page type, and generating the third adjusted threshold using the first number of flipped bits and the second number of flipped bits.
摘要翻译： 接收到错误纠错解码失败的页面类型的指示。 至少部分地基于页面类型从多个阈值中选择要调整的阈值。 生成与页面类型相关联的第三调整阈值，包括：使用与页面类型相关联的第一调整阈值来确定翻转位的第一数量，使用与页面类型相关联的第二调整阈值确定第二数量的翻转位 ，并且使用第一数量的翻转位和第二数目的翻转位产生第三调整阈值。
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