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US 8,554,990 B2Granted
Nonvolatile memory system and related method of preserving stored data during power interruption
AssigneeSamsung Electronics Co., Ltd.
InventorsMin cheol Kwon, Woon Hyug Jee, Dong Jun Shin, Shine Kim
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Abstract
A nonvolatile memory system comprises a temporary power supply that supplies power in the event of an unexpected power interruption. The temporary power supply provides power while metadata stored in one or more buffers is compressed and transferred to a nonvolatile memory device.
Claims20
A nonvolatile memory system, comprising:
- a first buffer memory configured to store metadata;
- a data compressor configured to compress the metadata;
- a plurality of nonvolatile memory devices configured to store the compressed metadata;
- and
- a memory system control unit configured to control the data compressor to compress the metadata stored in the first buffer memory while power is supplied to the nonvolatile memory system by a temporary power supply, and further configured to control at least one of the nonvolatile memory devices to store the compressed metadata.
2 more elements
A method of managing data in a nonvolatile memory system including a plurality of nonvolatile memory devices, the nonvolatile memory system being driven by a temporary power supply in the event of an unexpected power supply failure, the method comprising:
- compressing metadata to be stored in the nonvolatile memory system to generate compressed metadata;
- storing the compressed metadata in a buffer memory as temporarily-stored compressed metadata;
- and
- storing the temporarily-stored compressed metadata in at least one of the plurality of nonvolatile memory devices.
1 more element
Dependencies are inferred from the claim text.