Samsung Electronics Co., Ltd.

Taek Kyun Lee

Hyun Ju Kim

A method of operating a data storage device including a non-volatile memory device includes receiving an update command from a host; and closing a first log block, which is included in the non-volatile memory device and which includes an open word line, in response to the update command. The closing is performed to avoid update data, which is transmitted from the host and related to the update command, being subsequently written to an empty page of the first log block.

Method of operating data storage device and method of operating system including the same

A method of operating a memory device includes writing initial data to non-volatile memory cells of a non-volatile memory cell array, generating a difference value based on a difference between first data related to the initial data written to the non-volatile memory cells and second data related to the initial data written to the non-volatile memory cells, comparing the difference value with a reference value, and generating and transmitting a status signal indicating that the initial data has been successfully written to a controller when the difference value is less than the reference value. The data may be randomized by the controller or the memory device.

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Suwon-si, South Korea

Taek Kyun Lee