Storage device and method for storing meta data in a distributed manner

    公开(公告)号:US12242746B2

    公开(公告)日:2025-03-04

    申请号:US18196788

    申请日:2023-05-12

    Abstract: There is provided a storage device, which includes: a memory device that includes a plurality of memory blocks, and stores first meta data including first status data and a first parameter in a first memory block among the plurality of memory blocks; and a memory controller that stores second meta data including second status data and second parameters, determines final meta data among a plurality of pieces of meta data including the first meta data and the second status data by comparing a plurality of pieces of status data with the first status data and the second status data, performs parameter confirmation for storing the final meta data in the meta block, and controls the memory device based on a parameter stored in the meta block.

    NON-VOLATILE MEMORY SYSTEM AND DATA RECOVER READ OPERATION METHOD THEREOF

    公开(公告)号:US20250104784A1

    公开(公告)日:2025-03-27

    申请号:US18762272

    申请日:2024-07-02

    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.

    STORAGE DEVICE, STORAGE CONTROLLER, AND OPERATING METHOD OF STORAGE CONTROLLER

    公开(公告)号:US20230066982A1

    公开(公告)日:2023-03-02

    申请号:US17742030

    申请日:2022-05-11

    Abstract: A storage device includes a non-volatile memory including memory blocks, and a storage controller including a history buffer including plural history read level storage areas corresponding to the memory blocks. The storage controller dynamically adjusts a number of the history read level storage areas allocated to one or more of the plurality of memory blocks based on reliabilities of the memory blocks during runtime of the storage device. The storage controller increases a number of history read level storage areas allocated to a first memory block among the memory blocks that has a relatively low reliability with respect to the reliabilities of remaining ones of the memory blocks.

Patent Agency Ranking