公开(公告)号：US20140189458A1

公开(公告)日：2014-07-03

申请号：US14146929

申请日：2014-01-03

Applicant: SK hynix memory solutions inc.

Inventor： Frederick K.H. Lee ,  Jason Bellorado ,  Zheng Wu ,  Marcus Marrow

IPC: H03M13/11

CPC classification number: H03M13/1111 ,  G11B2020/185 ,  G11B2220/2508 ,  H03M13/612 ,  H03M13/6325 ,  H03M13/6343 ,  H04L1/0054 ,  H04L1/0057

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10185623B2

公开(公告)日：2019-01-22

申请号：US15092110

申请日：2016-04-06

Applicant: SK Hynix Memory Solutions Inc.

Inventor： Arunkumar Subramanian ,  Frederick K. H. Lee ,  Xiangyu Tang ,  Lingqi Zeng ,  Jason Bellorado

IPC: G11C16/04 ,  G06F11/10 ,  G11C16/10 ,  G11C16/26 ,  G11C29/02 ,  G11C29/52 ,  G11C29/04

Abstract: A charge constrained bit sequence is processed to obtain a lower bound on a number of bit errors associated with the charge constrained bit sequence. The lower bound is compared against an error correction capability threshold associated with an error correction decoder. In the event the lower bound is greater than or equal to the error correction decoder threshold, an error correction decoding failure is predicted.

公开(公告)号：US09875157B2

公开(公告)日：2018-01-23

申请号：US14298736

申请日：2014-06-06

Applicant: SK hynix memory solutions inc.

Inventor： Yu Kou ,  Lingqi Zeng ,  Jason Bellorado ,  Marcus Marrow

IPC: H03M13/00 ,  G06F11/10 ,  H03M13/11 ,  G06F11/08 ,  G11C29/56 ,  H03M13/01

CPC classification number: G06F11/1076 ,  G06F11/08 ,  G06F11/1012 ,  G11C29/56004 ,  H03M13/015 ,  H03M13/1102 ,  H03M13/154

Abstract: 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.

公开(公告)号：US09256522B1

公开(公告)日：2016-02-09

申请号：US13858781

申请日：2013-04-08

Applicant: SK hynix memory solutions inc.

Inventor： Xiangyu Tang ,  Lingqi Zeng ,  Jason Bellorado ,  Frederick K. H. Lee ,  Arunkumar Subramanian

IPC: G06F12/02 ,  G06F11/10 ,  G06F11/00 ,  G11C16/34 ,  G11C16/26 ,  G06F12/00

CPC classification number: G06F12/00 ,  G06F11/008 ,  G06F11/1012 ,  G06F11/1072 ,  G06F12/0246 ,  G06F2212/1032 ,  G06F2212/2022 ,  G11C16/26 ,  G11C16/34

Abstract: A system and method for determining soft read data for a group of cells in a nonvolatile flash memory are disclosed. An expected value representative of a plurality of stored values in a group of cells is obtained. A measured value representative of the plurality of stored values in the group of cells is obtained, based on a single read to the group of cells. A soft read data for the group of cells is determined based at least in part on the expected value and the measured value. The expected and measured values may include at least one of a number of 0s, a number of 1s, a ratio of 0s to 1s or a ratio of 1s to 0s. A reliability for a bit i may be obtained using a one-step majority logic decoder, and a threshold reliability may be used when determining the soft read data.

Abstract translation: 公开了一种用于确定非易失性闪速存储器中的一组单元的软读取数据的系统和方法。 获得代表一组单元格中的多个存储值的期望值。 基于对单元格组的单次读取，获得表示该组单元格中的多个存储值的测量值。 至少部分地基于期望值和测量值确定该组单元的软读取数据。 期望值和测量值可以包括数量为0，数量1s，0s至1s的比率或1s至0s的比率中的至少一个。 使用一步多数逻辑解码器可以获得一位i的可靠性，并且当确定软读取数据时可以使用阈值可靠性。

公开(公告)号：US09013817B2

公开(公告)日：2015-04-21

申请号：US14158468

申请日：2014-01-17

Applicant: SK hynix memory solutions inc.

Inventor： Jason Bellorado ,  Marcus Marrow

IPC: G11B5/09 ,  G11B20/10 ,  G11B5/012 ,  G11B5/00 ,  G11B20/12

CPC classification number: G11B20/10009 ,  G11B5/012 ,  G11B5/09 ,  G11B20/10046 ,  G11B2005/0002 ,  G11B2020/1238 ,  G11B2020/1292 ,  G11B2020/1298 ,  G11B2220/2516

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150085572A1

公开(公告)日：2015-03-26

申请号：US14553745

申请日：2014-11-25

Applicant: SK hynix memory solutions inc.

Inventor： Arunkumar Subramanian ,  Xiangyu Tang ,  Jason Bellorado ,  Lingqi Zeng ,  Frederick K.H. Lee

IPC: G11C16/26

CPC classification number: G11C16/26 ,  G11C11/5642 ,  G11C16/3404 ,  G11C16/349

Abstract: A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A slope and a y intercept are determined based at least in part on the first read threshold, the second read threshold, the first page number, and the second page number. The slope and the y intercept are stored with a block identifier associated with the block.

Abstract translation: 接收与块中的第一页相关联的第一读取阈值和与块中的第二页相关联的第二读取阈值，其中第一页面具有第一页面编号，并且第二页面具有第二页面编号。 至少部分地基于第一读取阈值，第二读取阈值，第一页面编号和第二页面数量来确定斜率和y截距。 斜率和y截距用与块相关联的块标识符存储。

公开(公告)号：US20150052408A1

公开(公告)日：2015-02-19

申请号：US14531817

申请日：2014-11-03

Applicant: SK hynix memory solutions inc.

Inventor： Frederick K.H. Lee ,  Jason Bellorado ,  Marcus Marrow

IPC: G06F11/07

CPC classification number: G06F11/076 ,  G06F3/0679 ,  G06F11/0727 ,  H03M13/1111 ,  H03M13/3927 ,  H03M13/45 ,  H04L1/0054

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08924833B2

公开(公告)日：2014-12-30

申请号：US13963824

申请日：2013-08-09

Applicant: SK hynix memory solutions inc.

Inventor： Zheng Wu ,  Jason Bellorado ,  Marcus Marrow

IPC: H03M13/00 ,  G06F11/00 ,  H04L1/00 ,  H03M13/37 ,  H03M13/11 ,  H03M13/15

CPC classification number: H04L1/0041 ,  G06F11/00 ,  H03G3/3052 ,  H03M13/1102 ,  H03M13/1515 ,  H03M13/3715 ,  H04L1/20

Abstract: 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).

Abstract translation: 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。

公开(公告)号：US08923066B1

公开(公告)日：2014-12-30

申请号：US13852934

申请日：2013-03-28

Applicant: SK hynix memory solutions inc.

Inventor： Arunkumar Subramanian ,  Xiangyu Tang ,  Jason Bellorado ,  Lingqi Zeng ,  Frederick K. H. Lee

IPC: G11C16/26 ,  G11C29/00

CPC classification number: G11C16/26 ,  G11C11/5642 ,  G11C16/3404 ,  G11C16/349

Abstract: A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A slope and a y intercept are determined based at least in part on the first read threshold, the second read threshold, the first page number, and the second page number. The slope and the y intercept are stored with a block identifier associated with the block.

Abstract translation: 接收与块中的第一页相关联的第一读取阈值和与块中的第二页相关联的第二读取阈值，其中第一页面具有第一页面编号，并且第二页面具有第二页面编号。 至少部分地基于第一读取阈值，第二读取阈值，第一页面编号和第二页面数量来确定斜率和y截距。 斜率和y截距用与块相关联的块标识符存储。

公开(公告)号：US08923062B1

公开(公告)日：2014-12-30

申请号：US13935714

申请日：2013-07-05

Applicant: SK hynix memory solutions inc.

Inventor： Frederick K. H. Lee ,  Jason Bellorado ,  Arunkumar Subramanian ,  Lingqi Zeng ,  Xiangyu Tang ,  Ameen Aslam

IPC: G11C11/34 ,  G11C16/06

CPC classification number: G11C16/26 ,  G11C11/5628 ,  G11C16/0483 ,  G11C16/06 ,  G11C16/10 ,  G11C16/3404

Abstract: A next read threshold is determined by determining a first number of solid state storage cells having a stored voltage which falls into a first voltage range and determining a second number of solid state storage cells having a stored voltage which falls into a second voltage range. A gradient is determine by taking a difference between the first number of solid state storage cells and the second number of solid state storage cells. The next read threshold is determined based at least in part on the gradient.

Abstract translation: 通过确定具有落入第一电压范围的存储电压的第一数量的固态存储单元并且确定具有落入第二电压范围的存储电压的第二数量的固态存储单元来确定下一个读取阈值。 通过取第一数量的固态存储单元和第二数量的固态存储单元之间的差来确定梯度。 至少部分地基于梯度来确定下一个读取阈值。