公开(公告)号：US08839080B2

公开(公告)日：2014-09-16

申请号：US14089361

申请日：2013-11-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong June Kim ,  Junjin Kong ,  KyoungLae Cho

IPC: H03M13/00 ,  G11C16/34 ,  G06F11/10 ,  G11C11/56

CPC classification number: G06F11/1072 ,  G06F11/1048 ,  G11C11/5642 ,  G11C16/3404 ,  G11C16/349

Abstract: Methods of operating nonvolatile memory devices include testing strings of nonvolatile memory cells in the memory device to identify at least one weak string therein having a higher probability of yielding erroneous read data error relative to other strings. An identity of the at least one weak string may be stored as weak column information, which may be used to facilitate error detection and correction operations. In particular, an error correction operation may be performed on bits of data read from the strings using an algorithm that modifies a weighting of the reliability of one or more data bits in the bits of data based on the weak column information. More specifically, an algorithm may be used that interprets a bit of data read from the at least one weak string as having a relatively reduced reliability relative to other ones of the data bits.

Abstract translation: 操作非易失性存储器件的方法包括测试存储器件中的非易失性存储器单元的串，以识别其中至少一个弱串，其中相对于其它串产生错误的读数据误差的概率较高。 至少一个弱字符串的身份可以存储为弱列信息，其可以用于促进错误检测和校正操作。 特别地，可以使用基于弱列信息修改数据位中的一个或多个数据位的可靠性的加权的算法来对从字符串读取的数据的位进行纠错操作。 更具体地，可以使用解释从至少一个弱串读取的数据位相对于其他数据位相对降低的可靠性的算法。

公开(公告)号：US20140082458A1

公开(公告)日：2014-03-20

申请号：US14089361

申请日：2013-11-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong June Kim ,  Junjin Kong ,  KyoungLae Cho

IPC: G06F11/10

CPC classification number: G06F11/1072 ,  G06F11/1048 ,  G11C11/5642 ,  G11C16/3404 ,  G11C16/349

Abstract: Methods of operating nonvolatile memory devices include testing strings of nonvolatile memory cells in the memory device to identify at least one weak string therein having a higher probability of yielding erroneous read data error relative to other strings. An identity of the at least one weak string may be stored as weak column information, which may be used to facilitate error detection and correction operations. In particular, an error correction operation may be performed on bits of data read from the strings using an algorithm that modifies a weighting of the reliability of one or more data bits in the bits of data based on the weak column information. More specifically, an algorithm may be used that interprets a bit of data read from the at least one weak string as having a relatively reduced reliability relative to other ones of the data bits.

Abstract translation: 操作非易失性存储器件的方法包括测试存储器件中的非易失性存储器单元的串，以识别其中至少一个弱串，其中相对于其它串产生错误的读数据误差的概率较高。 至少一个弱字符串的身份可以存储为弱列信息，其可以用于促进错误检测和校正操作。 特别地，可以使用基于弱列信息修改数据位中的一个或多个数据位的可靠性的加权的算法来对从字符串读取的数据的位进行纠错操作。 更具体地，可以使用解释从至少一个弱串读取的数据位相对于其他数据位相对降低的可靠性的算法。