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公开(公告)号：US10298261B2
公开(公告)日：2019-05-21
申请号：US15132143
申请日：2016-04-18
摘要： Decoding logic is provided that is operational upon a data buffer to represent a plurality of variable nodes and a plurality of check nodes. For a respective one of the variable nodes, a vector component is selected from a confidence vector associated with the variable node. Using a respective one of the check nodes, a check node return value is calculated based on one or more other vector components from one or more other vectors and one or more vector indices corresponding to the one or more other vector components. The confidence vector is then updated based on the check node return value and an index for the check node return value, and a current state of a memory cell associated with the respective one of the variable nodes is determined based on a location of a primary one of multiple vector components within the updated confidence vector.
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公开(公告)号：US20180151222A1
公开(公告)日：2018-05-31
申请号：US15882937
申请日：2018-01-29
摘要： A soft information module is coupled between one or more flash memory devices and a decoder. The soft information module receives a putative value of one or more memory cells of the one or more flash memory devices based on a read of the one or more memory cells at an initial read level, and one or more respective indicators of whether the putative value was read at one or more respective different read levels offset from the initial read level, and receives a page indicator for the read. The soft information module determines a cell program region for the read based on the putative value, the one or more respective indicators, and the page indicator, identifies a predetermined confidence value for the region, and provides the confidence value to the decoder for association with the putative value, the confidence value being representative of a likelihood that the one or more memory cells was programmed to the putative value.
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公开(公告)号：US09881670B2
公开(公告)日：2018-01-30
申请号：US14853941
申请日：2015-09-14
IPC分类号： G06F11/00 , G06F11/08 , G06F11/10 , G11C29/56 , G11C16/08 , G11C16/34 , H03M13/11 , G11C11/56
CPC分类号： G11C11/5642 , G06F11/008 , G06F11/08 , G06F11/1048 , G11C11/5628 , G11C16/08 , G11C16/3422 , G11C16/3454 , G11C2211/5641 , H03M13/1105 , H03M13/1111
摘要： A soft information module is coupled between one or more flash memory devices and a decoder. The soft information module receives a putative value of one or more memory cells of the one or more flash memory devices based on a read of the one or more memory cells at an initial read level, and one or more respective indicators of whether the putative value was read at one or more respective different read levels offset from the initial read level, and receives a page indicator for the read. The soft information module determines a cell program region for the read based on the putative value, the one or more respective indicators, and the page indicator, identifies a predetermined confidence value for the region, and provides the confidence value to the decoder for association with the putative value, the confidence value being representative of a likelihood that the one or more memory cells was programmed to the putative value.
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公开(公告)号：US09319069B2
公开(公告)日：2016-04-19
申请号：US14607039
申请日：2015-01-27
CPC分类号： H03M13/458 , H03M13/05 , H03M13/1105 , H03M13/1111 , H03M13/1122 , H03M13/1128 , H03M13/114 , H03M13/1162 , H03M13/1171 , H03M13/255 , H03M13/615 , H03M13/6505
摘要： Decoding logic is provided that is operational upon a data buffer to represent a plurality of variable nodes and a plurality of check nodes. For a respective one of the variable nodes, a vector component is selected from a confidence vector associated with the variable node. Using a respective one of the check nodes, a check node return value is calculated based on one or more other vector components from one or more other vectors and one or more vector indices corresponding to the one or more other vector components. The confidence vector is then updated based on the check node return value and an index for the check node return value, and a current state of a memory cell associated with the respective one of the variable nodes is determined based on a location of a primary one of multiple vector components within the updated confidence vector.
摘要翻译： 提供了在数据缓冲器上可操作以表示多个可变节点和多个校验节点的解码逻辑。 对于相应的一个变量节点，从与变量节点相关联的置信向量中选择向量分量。 使用校验节点中的相应一个，基于来自一个或多个其他向量的一个或多个其他向量分量和对应于一个或多个其它向量分量的一个或多个向量索引来计算校验节点返回值。 然后基于校验节点返回值和校验节点返回值的索引来更新置信向量，并且基于主要位置的位置确定与相应一个变量节点相关联的存储器单元的当前状态 在更新的置信向量内的多个向量分量。
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公开(公告)号：US10510405B2
公开(公告)日：2019-12-17
申请号：US15882937
申请日：2018-01-29
摘要： A soft information module is coupled between one or more flash memory devices and a decoder. The soft information module receives a putative value of one or more memory cells of the one or more flash memory devices based on a read of the one or more memory cells at an initial read level, and one or more respective indicators of whether the putative value was read at one or more respective different read levels offset from the initial read level, and receives a page indicator for the read. The soft information module determines a cell program region for the read based on the putative value, the one or more respective indicators, and the page indicator, identifies a predetermined confidence value for the region, and provides the confidence value to the decoder for association with the putative value, the confidence value being representative of a likelihood that the one or more memory cells was programmed to the putative value.
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