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1. 发明授权

US08914709B1 Manufacturing testing for LDPC codes 有权
标题翻译： LDPC码制造测试
公开(公告)号：US08914709B1
公开(公告)日：2014-12-16
申请号：US13041218
申请日：2011-03-04
申请人： Yu Kou , Lingqi Zeng , Jason Bellorado , Marcus Marrow
发明人： Yu Kou , Lingqi Zeng , Jason Bellorado , Marcus Marrow
IPC分类号： H03M13/00
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.
摘要翻译：存储系统包括信道检测器，LDPC解码器和擦除块。信道检测器被配置为接收对应于从存储器读取的数据的数据并输出LLR信号。 LDPC解码器被配置为接收LLR信号并将反馈信号输出到信道检测器。擦除块被配置为擦除LLR信号和反馈信号中的至少一个的一部分。一种测试方法包括产生与擦除模式对应的错误率函数。该函数是多次LDPC迭代的函数。该方法包括至少部分地基于错误率函数来确定测试参数，其中测试参数包括LDPC迭代的测试次数，通过错误率和擦除模式。该方法包括使用测试参数测试存储设备。

2. 发明授权

US08560900B1 Adjusting receiver parameters without known data 有权
标题翻译：调整接收机参数而不知道数据
公开(公告)号：US08560900B1
公开(公告)日：2013-10-15
申请号：US13160360
申请日：2011-06-14
申请人： Jason Bellorado , Marcus Marrow , Yu Kou
发明人： Jason Bellorado , Marcus Marrow , Yu Kou
IPC分类号： G11C29/00 , G06F11/00 , G06F9/455 , G01R31/30
CPC分类号： G11B20/10296 , G11B20/10268 , G11B2020/1863 , H03M13/1102 , H03M13/2957 , H03M13/4146
摘要： Adjusting receiving parameters without known data is disclosed, including: receiving an indication of whether data associated with a sector is error correcting code (ECC) uncorrectable; in the event that the indication is that the data is uncorrectable, determining a plurality of statistical information outputs using a detector; and using at least a subset of the plurality of statistical information outputs to adjust a set of one or more receiver parameters.
摘要翻译：公开了调整没有已知数据的接收参数，包括：接收与扇区有关的数据是否是不可校正的纠错码（ECC）的指示; 在指示数据是不可校正的情况下，使用检测器确定多个统计信息输出; 以及使用所述多个统计信息输出的至少一个子集来调整一个或多个接收机参数的集合。

3. 发明授权

US08755135B1 Margining decoding utilizing soft-inputs 有权
标题翻译：使用软输入的边缘解码
公开(公告)号：US08755135B1
公开(公告)日：2014-06-17
申请号：US13040544
申请日：2011-03-04
申请人： Marcus Marrow , Jason Bellorado , Yu Kou
发明人： Marcus Marrow , Jason Bellorado , Yu Kou
IPC分类号： G11B27/36 , H03M13/00
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。

4. 发明授权

US08659846B2 Inter-track interference cancelation in the presence of frequency offset 有权
标题翻译：在存在频偏的情况下进行轨道间干扰消除
公开(公告)号：US08659846B2
公开(公告)日：2014-02-25
申请号：US13448218
申请日：2012-04-16
申请人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
发明人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
IPC分类号： G11B5/09
CPC分类号： G11B5/012 , G11B19/045 , G11B20/10046 , G11B2005/0002 , G11B2020/1238 , G11B2020/1292 , G11B2020/1298 , G11B2220/2516
摘要： An initial phase offset between a center track and a side track is determined. An initial side track pulse shape is determined using the initial phase offset and side track interference. The initial side track pulse shape minimizes a contribution of the side track interference to a center track bit. The contribution of the side track interference is removed from the center track bit using the initial side track pulse shape and the side track interference.
摘要翻译：确定中心轨道和侧轨迹之间的初始相位偏移。使用初始相位偏移和侧轨道干扰来确定初始侧轨道脉冲形状。初始侧轨道脉冲形状使得侧轨道干涉对中心轨道位的贡献最小化。使用初始侧轨道脉冲形状和侧轨道干扰，从中心轨道位置去除侧轨道干涉的贡献。

5. 发明授权

US08533576B1 Data independent error computation and usage with decision directed error computation 有权
标题翻译：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：US08533576B1
公开(公告)日：2013-09-10
申请号：US13012640
申请日：2011-01-24
申请人： Zheng Wu , Jason Bellorado , Marcus Marrow
发明人： Zheng Wu , Jason Bellorado , Marcus Marrow
IPC分类号： H03M13/00 , G06F11/00
CPC分类号： H04L1/0041 , G06F11/00 , H03G3/3052 , H03M13/1102 , H03M13/1515 , H03M13/3715 , H04L1/20
摘要： A signal error is determined by obtaining a known property of an expected signal. A signal is received and a signal error is determined based at least in part on the received signal and the known property of the expected signal.
摘要翻译：通过获得预期信号的已知属性来确定信号误差。接收信号并且至少部分地基于接收到的信号和预期信号的已知属性确定信号误差。

6. 发明授权

US08185787B1 Blind and decision directed multi-level channel estimation 有权
标题翻译：盲和决策多级信道估计
公开(公告)号：US08185787B1
公开(公告)日：2012-05-22
申请号：US12384894
申请日：2009-04-08
申请人： Marcus Marrow , Jason Bellorado , Rajiv Agarwal
发明人： Marcus Marrow , Jason Bellorado , Rajiv Agarwal
IPC分类号： G11C29/00
CPC分类号： G06F12/0246 , G06F12/00 , G06F12/08 , G11C11/5642 , G11C16/26 , G11C29/026 , G11C29/028
摘要： A technique for blind channel estimation is disclosed herein. A read value that is read from a multi-level storage device is received, as are a set of bins having bin ranges and (for each of the bins in the set) a corresponding portion of read values which fall into that particular bin. One or more of the bin ranges is adjusted such that the received portions of read values remain substantially the same after adjustment and after assignment of the read value to one of the set of bins after adjustment.
摘要翻译：本文公开了一种用于盲信道估计的技术。接收从多级存储设备读取的读取值，以及一组具有存储区范围和（对于集合中的每个存储区）的一组存储在该特定存储区中的读取值的相应部分。调整一个或多个存储区范围，使得读取值的接收部分在调整之后并且在将读取值分配给调整后的一组存储体之一之后保持基本相同。

7. 发明授权

US08094502B1 Write-precompensation and variable write backoff 有权
标题翻译：写预补偿和可变写回退
公开(公告)号：US08094502B1
公开(公告)日：2012-01-10
申请号：US12386004
申请日：2009-04-09
申请人： Jason Bellorado , Marcus Marrow
发明人： Jason Bellorado , Marcus Marrow
IPC分类号： G11C11/34
CPC分类号： G11C16/12 , G11C16/3418 , G11C16/3468 , G11C2216/14
摘要： A technique for writing data is disclosed. The technique includes estimating an amount of additional voltage on a victim cell of a solid-state storage device caused by writing to one or more other cells in the solid-state storage device, determining a modified write value for the victim cell based at least in part on a desired value for the victim cell and the estimated amount of additional voltage, and writing the modified write value to the victim cell.
摘要翻译：公开了一种写入数据的技术。该技术包括估计通过向固态存储设备中的一个或多个其他小区写入而导致的固态存储设备的受害单元上的额外电压的量，至少基于部分是受害单元的期望值和估计的附加电压量，并将修改的写入值写入受害单元。

8. 发明授权

US08659450B1 MTR and RLL code design and encoder and decoder 有权
标题翻译： MTR和RLL码设计及编码器及解码器
公开(公告)号：US08659450B1
公开(公告)日：2014-02-25
申请号：US13436187
申请日：2012-03-30
申请人： Zheng Wu , Jason Bellorado , Marcus Marrow
发明人： Zheng Wu , Jason Bellorado , Marcus Marrow
IPC分类号： H03M7/00
CPC分类号： H03M5/145 , H03M7/20 , H03M7/46
摘要： An array f(n) is received for n=1, . . . , N where N is a length of a codeword. An array g(n) is received for n=1, . . . , N where N is a length of a codeword. Input data is encoded to satisfy an MTR constraint and a RLL constraint using the array f(n) and the array g(n).
摘要翻译：对于n = 1，接收数组f（n）。。。，N，其中N是码字的长度。对于n = 1，接收数组g（n）。。。，N，其中N是码字的长度。使用阵列f（n）和阵列g（n）对输入数据进行编码以满足MTR约束和RLL约束。

9. 发明授权

US08650459B1 Soft input, soft ouput mappers and demappers for block codes 有权
标题翻译：软输入，软输出映射器和块代码的解映射器
公开(公告)号：US08650459B1
公开(公告)日：2014-02-11
申请号：US13284597
申请日：2011-10-28
申请人： Frederick K. H. Lee , Jason Bellorado , Zheng Wu , Marcus Marrow
发明人： Frederick K. H. Lee , Jason Bellorado , Zheng Wu , Marcus Marrow
IPC分类号： H03M13/03
CPC分类号： H03M13/1111 , G11B2020/185 , G11B2220/2508 , H03M13/612 , H03M13/6325 , H03M13/6343 , H04L1/0054 , H04L1/0057
摘要： A log-likelihood ratio (LLR) for a bit bi in a message is determined by generating a first term, including by summing LLRs corresponding to bits in a first codeword having a specified value. The first codeword has a corresponding first message and bit bi of the first message corresponds to a 0. A second term is generated, including by summing LLRs corresponding to bits in a second codeword having the specified value. The second codeword has a corresponding second message and bit bi of the second message corresponds to a 1. The LLR for bit bi in the message is generated based at least in part on the first term and the second term.
摘要翻译：通过生成第一项来确定消息中的比特bi的对数似然比（LLR），该第一项包括通过对与具有指定值的第一码字中的比特相对应的LLR相加。第一码字具有对应的第一消息，第一消息的比特bi对应于0.产生第二项，包括对与具有指定值的第二码字中的比特相对应的LLR相加。第二码字具有对应的第二消息，第二消息的比特bi对应于1。消息中的比特bi的LLR至少部分地基于第一项和第二项生成。

10. 发明申请

US20130027801A1 INTER-TRACK INTERFERENCE CANCELATION IN THE PRESENCE OF FREQUENCY OFFSET 有权
标题翻译：频率偏移存在的互扰干扰消除
公开(公告)号：US20130027801A1
公开(公告)日：2013-01-31
申请号：US13448218
申请日：2012-04-16
申请人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
发明人： Naveen Kumar , Jason Bellorado , Marcus Marrow , Kai Keung Chan
IPC分类号： G11B20/10
CPC分类号： G11B5/012 , G11B19/045 , G11B20/10046 , G11B2005/0002 , G11B2020/1238 , G11B2020/1292 , G11B2020/1298 , G11B2220/2516
摘要： An initial phase offset between a center track and a side track is determined. An initial side track pulse shape is determined using the initial phase offset and side track interference. The initial side track pulse shape minimizes a contribution of the side track interference to a center track bit. The contribution of the side track interference is removed from the center track bit using the initial side track pulse shape and the side track interference.
摘要翻译：确定中心轨道和侧轨迹之间的初始相位偏移。使用初始相位偏移和侧轨道干扰来确定初始侧轨道脉冲形状。初始侧轨道脉冲形状使得侧轨道干涉对中心轨道位的贡献最小化。使用初始侧轨道脉冲形状和侧轨道干扰，从中心轨道位置去除侧轨道干涉的贡献。

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