公开(公告)号：US20210334416A1

公开(公告)日：2021-10-28

申请号：US17213756

申请日：2021-03-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Brian Myungjune Jung ,  Daeok Kim ,  Moonwook Oh ,  Hyunsook Hong

IPC: G06F21/79

Abstract: A storage device providing a function of securely discarding data and an operating method of the storage device are provided. The storage device includes a safety pin device removably mounted on the storage device, the safety pin device configured to store first encrypted information and second encrypted information, the first encrypted information encrypted using a first key associated with a first user, and the second encrypted information encrypted using a second key associated with a second user, security circuitry configured to, receive the first encrypted information from the safety pin device, decrypt the first encrypted information, and generate a data encryption key based on results of the decrypting the first encrypted information, and a nonvolatile memory configured to store data encrypted with the data encryption key.

公开(公告)号：US10108354B2

公开(公告)日：2018-10-23

申请号：US14711605

申请日：2015-05-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Hyunseob Lee ,  Du-Won Hong ,  Moonwook Oh

IPC: G06F13/00 ,  G06F3/06 ,  G06F12/00 ,  G06F11/00 ,  G11C16/34 ,  G11C29/00 ,  G06F12/02 ,  G11C29/04

Abstract: A nonvolatile memory device includes user blocks and reserved blocks. A ratio of the number of used reserved blocks among the reserved blocks during a predetermined period to an operation count during the predetermined period is calculated by a memory controller and an end of lifetime warning signal is transmitted to an external device based on the calculated ratio. Bad blocks among the user blocks are replaced by one or more of the reserved blocks. If at least one block among the user blocks becomes a bad block, the memory controller replaces the bad block with any one of the reserved blocks, and the reserved block used indicates a reserved block replaced with at least one of the user blocks. The operation count can be an erase count or a program count of the nonvolatile memory device, or a time count indicating usage time.

公开(公告)号：US11423182B2

公开(公告)日：2022-08-23

申请号：US17213756

申请日：2021-03-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Brian Myungjune Jung ,  Daeok Kim ,  Moonwook Oh ,  Hyunsook Hong

IPC: G06F21/79 ,  G06F3/06 ,  G06F21/78

Abstract: A storage device providing a function of securely discarding data and an operating method of the storage device are provided. The storage device includes a safety pin device removably mounted on the storage device, the safety pin device configured to store first encrypted information and second encrypted information, the first encrypted information encrypted using a first key associated with a first user, and the second encrypted information encrypted using a second key associated with a second user, security circuitry configured to, receive the first encrypted information from the safety pin device, decrypt the first encrypted information, and generate a data encryption key based on results of the decrypting the first encrypted information, and a nonvolatile memory configured to store data encrypted with the data encryption key.

公开(公告)号：US10101947B2

公开(公告)日：2018-10-16

申请号：US15227947

申请日：2016-08-03

Applicant: Samsung Electronics Co., Ltd.

Inventor： Du-Won Hong ,  Moonsung Choi ,  Alain Tran ,  Moonwook Oh

IPC: G06F12/00 ,  G06F3/06

Abstract: A storage device includes one or more nonvolatile memories, and a memory controller that controls the nonvolatile memories such that write data of data streams is stored in the nonvolatile memories. The data streams have a first number of requested stream identifiers provided from a host. The memory controller includes a write amount manager that manages information about a data amount of each of the data streams having the requested stream identifiers, a stream manager that maps the first number of the requested stream identifiers with a second number of processing stream identifiers, depending on the information associated with the data amount, such that the data streams are provided to the nonvolatile memories according to the second number of processing stream identifiers, and a mapping manager that manages information about mapping between the first number of the requested stream identifiers and the second number of the processing stream identifiers.