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US 2026/0310366 A1Published application
Storage device for managing map information provided to host and method of operating the same
AssigneeSK hynix Inc.
InventorJung Woo KIM
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Abstract
Provided herein may be a storage device capable of efficiently managing a host mapping table. The storage device may include a memory device and a memory controller configured to generate map information in which a physical address of the memory device is mapped to a logical address provided from a host, to provide a first map segment among a plurality of map segments included in the map information to the host, and to generate map change information when the first map segment is changed.
Claims20
A memory controller configured to:
- generate map information in which a physical address of a memory device is mapped to a logical address provided from a host,
- provide a first map segment among a plurality of map segments included in the map information to the host,
- generate map change information when the first map segment is changed, and
- in response to a read request from the host, when the first map segment is determined to be partially valid, determine a physical address based on either an address mapping relationship received from the host or a second map segment including a new address mapping relationship with a logical address included in changed address mapping relationships.
1 more element
A method of operating a memory controller, comprising:
- generating a first map segment including a plurality of address mapping relationships between a plurality of logical addresses and a plurality of physical addresses;
- providing the first map segment to a host;
- calculating a number of changed address mapping relationships among the plurality of address mapping relationships;
- determining whether the first map segment is valid based on the number of changed address mapping relationships;
- receiving an operation request and an address mapping relationship associated with a logical address included in the first map segment from the host;
- and
- determining a storage region on which the operation corresponding to the operation request is to be performed based on whether the first map segment is valid,
- wherein determining the storage region on which the operation corresponding to the operation request is to be performed comprises when the first map segment is determined to be partially valid, determining a physical address based on either an address mapping relationship received from the host or a second map segment including a new address mapping relationship with a logical address included in the changed address mapping relationships.
5 more elements
Dependencies are inferred from the claim text.