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US 11,113,189 B2Granted
Memory system to perform read reclaim and garbage collection, and method of operating the same
AssigneeSK hynix Inc.
InventorEu Joon Byun
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Abstract
Provided herein is a memory system and a method of operating the same. According to the present technology, a memory system performs a garbage collection operation based on a ratio of a read count value of a memory block with reference to a read count threshold value of a read reclaim operation. Consequently, the read reclaim operation and the garbage collection operation may be prevented from overlapping with each other.
Claims19
A memory system comprising:
- a memory device including a plurality of memory blocks;
- a controller configured to manage a read count value of each of the memory blocks and generate level information corresponding to the read count value;
- and
- a host configured to output a host command for requesting a garbage collection operation of the memory device based on the level information,
- wherein the level information is a ratio of the read count value with reference to a read count threshold value of a read reclaim operation.
2 more elements
A memory system comprising:
- a memory device including a plurality of memory blocks;
- a controller configured to control the memory device to perform a read reclaim operation based on a read count value of a memory block on which a read operation has been completed or generate level information based on the read count value of the memory block;
- and
- a host configured to manage, based on the level information, a read count value of each of logical addresses corresponding to memory blocks on which the read operation has been completed and output a host command corresponding to a garbage collection operation of the memory device based on the read count value of each of the logical addresses,
- wherein the level information is a ratio of the read count value with reference to a read count threshold value of the read reclaim operation.
2 more elements
A method of operating a memory system, comprising:
- performing a read reclaim operation based on a first read count value of a memory block on which a read operation has been completed, or generating level information of the first read count value;
- managing, based on the level information, a second read count value of each of logical addresses corresponding to memory blocks on which the read operation has been completed;
- and
- performing the garbage collection operation based on the second read count value of each of the logical addresses,
- wherein the level information is a ratio of the read count value with reference to a read count threshold value of the read reclaim operation.
2 more elements
Dependencies are inferred from the claim text.