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US 2019/0163602 A1Published application
Memory system and operating method thereof
AssigneeSK hynix Inc.
InventorsByeong Gyu PARK, Ik Sung OH, Seung Gu JI, Sung Kwan HONG
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Abstract
A memory system includes a nonvolatile memory device; a random access memory configured to store, in response to an unmap request received from a host device, a flag information indicating that an unmap address as a target of the unmap request is unmapped; and a control unit configured to flush the flag information to the nonvolatile memory device, wherein the control unit flushes the flag information to the nonvolatile memory device when a first condition is satisfied.
Claims15
A memory system comprising:
- a nonvolatile memory device;
- a random access memory configured to store, in response to an unmap request received from a host device, a flag information indicating that an unmap address as a target of the unmap request is unmapped;
- and
- a control unit configured to flush the flag information to the nonvolatile memory device,
- wherein the control unit flushes the flag information to the nonvolatile memory device when a first condition is satisfied.
2 more elements
A memory system comprising:
- a nonvolatile memory device including a memory unit;
- a random access memory configured to store a flag information indicating that an address of the memory unit is unmapped;
- and
- a control unit configured to transmit, when a read request is received from a host device, a response corresponding to the read request, to the host device,
- wherein the control unit transmits, when a read request for an unmap address is received from the host device, an unmap response to the host device, by referring to the flag information.
2 more elements
A method for operating a memory system, comprising:
- receiving an unmap request from a host device;
- storing a flag information indicating that an unmap address as a target of the unmap request is unmapped, in a random access memory;
- and
- controlling, by a control unit, the flag information to be flushed to a nonvolatile memory device when a first condition is satisfied.
1 more element
Dependencies are inferred from the claim text.