Method of estimating deterioration state of memory device and related method of wear leveling
    13.
    发明授权
    Method of estimating deterioration state of memory device and related method of wear leveling 有权
    估计存储器件劣化状态的方法及相关的磨损均衡方法

    公开(公告)号:US09324420B2

    公开(公告)日:2016-04-26

    申请号:US14446347

    申请日:2014-07-30

    Abstract: A method of estimating a deterioration state of a memory device comprises reading data from selected memory cells connected to a selected wordline of a memory cell array by applying to the selected wordline a plurality of distinct read voltages having values corresponding to at least one valley of threshold voltage distributions of the selected memory cells, generating quality estimation information indicating states of the threshold voltage distributions using the data read from the selected memory cells, and determining a deterioration state of a storage area including the selected memory cells based on the generated quality estimation information.

    Abstract translation: 一种估计存储器件劣化状态的方法包括通过向所选择的字线应用具有对应于至少一个阈值谷值的多个不同读取电压来从连接到存储器单元阵列的选定字线的选定存储单元读取数据 选择的存储单元的电压分布,使用从选择的存储单元读取的数据生成指示阈值电压分布的状态的质量估计信息,并且基于生成的质量估计信息来确定包括所选存储单元的存储区域的劣化状态 。

    Storage device that performs state shaping of data

    公开(公告)号:US11216338B2

    公开(公告)日:2022-01-04

    申请号:US16835721

    申请日:2020-03-31

    Abstract: A storage device includes a nonvolatile memory device that includes a plurality of pages, each of which includes a plurality of memory cells, and a controller that receives first write data expressed by 2m states (m being an integer greater than 1) from an external host device. The controller in a first operating mode shapes the first write data to second write data, which are expressed by “k” states (k being an integer greater than 2) smaller in number than the 2m states, performs first error correction encoding on the second write data to generate third write data expressed by the “k” states, and transmits the third write data to the nonvolatile memory device for writing at a selected page from the plurality of pages.

    Controllers that generate output bits for storage in non-volatile memory devices by puncturing code word bits and methods for operating the same
    18.
    发明授权
    Controllers that generate output bits for storage in non-volatile memory devices by puncturing code word bits and methods for operating the same 有权
    通过对代码字位进行删截而产生用于存储在非易失性存储器件中的输出位的控制器和用于操作它们的方法

    公开(公告)号:US09239778B2

    公开(公告)日:2016-01-19

    申请号:US14054964

    申请日:2013-10-16

    Abstract: An operating method of a controller includes selecting bits of code word to be punctured; detecting locations of incapable bits of an input word based on locations of the bits to be punctured and a structure of a generation matrix calculation unit; refreezing the input word such that frozen bits and incapable bits of the input word overlap; generating input word bits by replacing information word bits with frozen bits based on the refreezing result; generating the code word by performing generation matrix calculation on the input word bits; generating output bits by puncturing the code word based on locations of the bits to be punctured; and transmitting the output bits to a nonvolatile memory device.

    Abstract translation: 控制器的操作方法包括选择要被穿孔的代码字的位; 基于要被删截的位的位置检测输入字的不能位的位置和生成矩阵计算单元的结构; 重新冻结输入字,使得输入字的冻结位和无效位重叠; 通过基于重新冻结结果将具有冻结位的信息字位替换来产生输入字位; 通过对输入字位执行生成矩阵计算来生成码字; 通过基于要被穿孔的比特的位置来对码字进行删截来产生输出比特; 并将输出比特发送到非易失性存储器件。

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