Storage device using power state information and operating method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorsHyunchul Park, Se-Wook Na, Young-Jae Jung, Durina Park
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Abstract
A storage device includes a nonvolatile memory device and a memory controller configured to control the nonvolatile memory device in response to a request from a host. The memory controller is configured to employ state information related to the confidence level of a power supply to determine a reliability level with respect to an access operation of the memory device and to perform a reliability guarantee operation corresponding to the determined reliability level.
Claims20
A method of operating a storage device including a nonvolatile memory device comprising:
- receiving power state information representing a state of power being supplied from a host to the storage device;
- determining a power state of the storage device according to a change of the power state information;
- selecting at least one of a plurality of reliability levels with respect to the nonvolatile memory device according to the determined power state;
- and
- performing a reliability guarantee operation with respect to the nonvolatile memory device corresponding to the selected at least one reliability level,
- wherein the power state is one of three predictability states, including unpredictable state, sustainable state, and off-expected state with respect to the power supply.
A storage device comprising:
- a nonvolatile memory device;
- and
- a memory controller configured to control the nonvolatile memory device according to a request from a host,
- wherein the memory controller receives state information with respect to a power supply provided from the host to determine a reliability level with respect to an access operation of the nonvolatile memory device and performs a reliability guarantee operation corresponding to the determined reliability level, and
- wherein the state information with respect to a power supply comprises at least one of three predictability levels including:
- unpredictable, sustainable, and off-expected.
A storage device comprising:
- a nonvolatile memory device;
- and
- a memory controller configured to control the nonvolatile memory device in response to a request from a host,
- wherein the memory controller is configured to employ state information related to the confidence level of a power supply to determine a reliability level with respect to an access operation of the nonvolatile memory device and to perform a reliability guarantee operation corresponding to the determined reliability level.
Dependencies are inferred from the claim text.