Abstract: A memory system includes a memory device including a plurality of blocks, a buffer storing degradation information regarding at least one of the plurality of blocks, and a memory controller configured to determine a degradation level of the block corresponding to the read request based on the degradation information, in response to a read request from a host, infer a read level corresponding to the read request based on the degradation level, and read data from the memory device based on the read level.

Abstract: A storage device includes a non-volatile memory including a plurality of blocks, a buffer memory, and a controller that stores an on-cell count in the buffer memory, the on-cell count indicating a number of memory cells, which are turned on by a read level applied to a reference word line of each of the plurality of blocks, from among memory cells connected to the reference word line.

Abstract: An operation method of a storage controller which includes a nonvolatile memory device, the method including: collecting a first parameter indicating a degradation factor of a first memory area of the nonvolatile memory device and a second parameter indicating a degree of degradation occurring at the first memory area, in an initial driving period; selecting a first function model of a plurality of function models based on the first parameter and the second parameter and predicting a first error tendency of the first memory area based on the first function model; determining a first reliability interval based on the first error tendency; and performing a first reliability operation on the first memory area of the nonvolatile memory device based on the first reliability interval.

Abstract: A memory system includes a memory device including a plurality of blocks, a buffer storing degradation information regarding at least one of the plurality of blocks, and a memory controller configured to determine a degradation level of the block corresponding to the read request based on the degradation information, in response to a read request from a host, infer a read level corresponding to the read request based on the degradation level, and read data from the memory device based on the read level.

Abstract: A storage device includes a non-volatile memory including a plurality of blocks, a buffer memory, and a controller that stores an on-cell count in the buffer memory, the on-cell count indicating a number of memory cells, which are turned on by a read level applied to a reference word line of each of the plurality of blocks, from among memory cells connected to the reference word line.

Abstract: A storage device includes a non-volatile memory including a plurality of blocks, a buffer memory that stores a plurality of on-cell counts, which are generated by reading memory cells connected to a plurality of reference word lines of the plurality of blocks by using a read level, and an artificial neural network model, and a controller that inputs an on-cell count corresponding to a target block among the plurality of on-cell counts and a number of a target word line of the target block to the artificial neural network model, and infers a plurality of read levels for reading data of memory cells connected to the target word line using the artificial neural network model.

Abstract: A storage device includes a non-volatile memory including a plurality of blocks, a buffer memory, and a controller that stores an on-cell count in the buffer memory, the on-cell count indicating a number of memory cells, which are turned on by a read level applied to a reference word line of each of the plurality of blocks, from among memory cells connected to the reference word line.

Abstract: A memory system includes multiple storage devices that each include a nonvolatile memory device. A client device is configured to collect deterioration information of the nonvolatile memory devices provided from the storage devices. A server device is configured to receive the collected deterioration information and to predict a degree of deterioration of the nonvolatile memory devices in real time by performing machine learning based on the collected deterioration information and initial deterioration information. The client device determines a read level of the nonvolatile memory device based on the degree of deterioration of the nonvolatile memory devices from the server device. The storage device sets the nonvolatile memory device to operate based on the read level determined in the client device.

Abstract: A storage device includes a nonvolatile memory device, a buffer memory, a controller and a neuromorphic chip. The neuromorphic chip is configured to generate an access classifier based on the access result information and the access environment information. The controller is configured to perform first accesses to the nonvolatile memory device using the buffer memory and to collects the access result information and the access environment information of the first accesses in the buffer memory. The controller is configured to perform a second access of the nonvolatile memory device using the buffer memory. The controller is configured to obtain a prediction result of access parameters associated with the second access by using access environment information associated with the second access and the access classifier.

Abstract: A storage device includes a nonvolatile memory device, a buffer memory, a controller and a neuromorphic chip. The neuromorphic chip is configured to generate an access classifier based on the access result information and the access environment information. The controller is configured to perform first accesses to the nonvolatile memory device using the buffer memory and to collects the access result information and the access environment information of the first accesses in the buffer memory. The controller is configured to perform a second access of the nonvolatile memory device using the buffer memory. The controller is configured to obtain a prediction result of access parameters associated with the second access by using access environment information associated with the second access and the access classifier.

Abstract: A memory system includes multiple storage devices that each include a nonvolatile memory device. A client device is configured to collect deterioration information of the nonvolatile memory devices provided from the storage devices. A server device is configured to receive the collected deterioration information and to predict a degree of deterioration of the nonvolatile memory devices in real time by performing machine learning based on the collected deterioration information and initial deterioration information. The client device determines a read level of the nonvolatile memory device based on the degree of deterioration of the nonvolatile memory devices from the server device. The storage device sets the nonvolatile memory device to operate based on the read level determined in the client device.