Patent ID: 11914892
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. An operating method of a storage controller comprising a history buffer, the operating method comprising:
allocating a plurality of history read level storage areas included in the history buffer to a plurality of memory blocks included in a non-volatile memory, respectively; and
performing a history buffer control operation for dynamically adjusting a number of history read level storage areas allocated to at least one of the plurality of memory blocks, based on reliabilities of the plurality of memory blocks,
wherein the history buffer control operation comprises:
recovering a history read level storage area allocated to a first memory block among the plurality of memory blocks, when a reliability of the first memory block is greater than a first threshold value; and
allocating an additional history read level storage area to the first memory block, when the reliability of the first memory block is equal to or less than a second threshold value, the second threshold value being less than the first threshold value.