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US 2022/0093182 A1Published application
Storage device and reading method
AssigneeKioxia Corporation
InventorsMakoto KURIBARA, Shin TAKASAKA, Rintaro ARAI
Life of this patent
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Abstract
According to one embodiment, a storage device includes a nonvolatile memory and a controller. The controller is configured to read data from the nonvolatile memory by applying a read voltage to the nonvolatile memory. The controller is configured to correct the read voltage based on a difference between a measured value of a bit number obtained when the data is read from the nonvolatile memory by applying the read voltage to the nonvolatile memory and an expected value of the bit number.
Claims20
A storage device comprising:
- a nonvolatile memory;
- and
- a controller configured to:
- read data from the nonvolatile memory by applying a read voltage to the nonvolatile memory;
- and
- correct the read voltage based on a difference between a measured value of a bit number obtained when the data is read from the nonvolatile memory by applying the read voltage to the nonvolatile memory and an expected value of the bit number, the expected value being a value expected to be obtained when the data is read from the nonvolatile memory by applying the read voltage to the nonvolatile memory.
3 more elements
A reading method of a nonvolatile memory, comprising:
- calculating an expected value of a bit number which is expected to obtained when data is read from the nonvolatile memory by applying a read voltage to the nonvolatile memory;
- calculating a measured value of the bit number obtained when the data is read from the nonvolatile memory by applying the read voltage to the nonvolatile memory;
- and
- correcting the read voltage based on a difference between the expected value and the measured value.
1 more element
Dependencies are inferred from the claim text.