NON-VOLATILE MEMORY SYSTEM AND DATA RECOVER READ OPERATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Jul 2, 2024
filing date -
Jul 2, 2024
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Abstract
A data recover read (DRR) operation method of a nonvolatile memory system includes: performing a first read operation on adjacent memory cells, which are connected to an adjacent wordline adjacent to a target wordline, based on a first specific read level; obtaining a cell count value for the adjacent wordline; determining offset values for a normal read level of target memory cells, which are connected to the target wordline, based on the cell count value for the adjacent wordline; and performing a second read operation on the target memory cells, based on the determined offset values and a result of the first read operation.
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