公开(公告)号：US20210026733A1

公开(公告)日：2021-01-28

申请号：US16794850

申请日：2020-02-19

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G06F11/10 ,  G06F11/07 ,  G06F12/02 ,  G06F12/0882 ,  G06F13/16

Abstract: A memory system includes a memory device including a plurality of memory blocks, each block having a plurality of pages to store data; and a controller suitable for: selecting error-prone pages each having a number of errors, which exceeds a threshold, among the plurality of pages, based on the number of errors of each of the plurality of pages; ranking the error-prone pages based on the numbers of errors therein; and performing a test read operation on the error-prone pages based on the ranking.

公开(公告)号：US20200334148A1

公开(公告)日：2020-10-22

申请号：US16778322

申请日：2020-01-31

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G06F12/0804 ,  G06F12/06

Abstract: A method for performing a sudden power-off recovery operation of a controller controlling a memory device, the method includes: obtaining open block information for open blocks of the memory device and read counts for the open blocks; updating each of the read counts by adding a set value to each of the read counts; storing the updated read counts in the memory device; sequentially reading pages in each of the open blocks without updating the read counts for the open blocks, based on the open block information, to detect a boundary page after the storing of the updated read counts in the memory device; and controlling the memory device to program dummy data in the detected boundary page.

公开(公告)号：US20200333982A1

公开(公告)日：2020-10-22

申请号：US16778282

申请日：2020-01-31

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G06F3/06

Abstract: A method for operating a controller controlling a memory device, the method includes: obtaining open block information and read counts of open blocks of the memory device; updating each of the read counts by adding a variable value for each open block to each of the read counts; storing the updated read counts in the memory device; and performing a sudden power-off recovery operation on the memory device based on the open block information.

公开(公告)号：US20200310926A1

公开(公告)日：2020-10-01

申请号：US16702055

申请日：2019-12-03

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE ,  Jang-Hwan JUN

IPC: G06F11/14 ,  G06F11/30 ,  G06F12/02 ,  G06F12/0882 ,  G06F1/30 ,  G06F3/06 ,  G11C11/4074

Abstract: A method for operating a memory system includes determining whether a recovery operation is performed, when power is supplied after being interrupted, generating an internal command for checking an operation status of a memory device when a recovery operation starts, accessing at least one open memory block in the memory device in response to the internal command, checking an operation status of the at least one open memory block, programming a preset amount of dummy data on a preset number of blank pages from a boundary programmed page in the at least one open memory block, and restoring data associated with the recovery operation in the at least one open block.

公开(公告)号：US20200265911A1

公开(公告)日：2020-08-20

申请号：US16865638

申请日：2020-05-04

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G11C29/38 ,  G11C29/44 ,  G11C29/42 ,  G11C29/04

Abstract: A memory system includes: a memory device that includes a plurality of memory blocks each of which includes a plurality of pages that store data; and a controller suitable for performing command operations corresponding to a plurality of commands received from a host on the memory blocks, detecting performance results of the command operations performed on the memory blocks, detecting, among the memory blocks, first memory blocks where performance of the command operations failed as bad blocks, and copying and storing valid data in the first memory blocks in second memory blocks of the memory blocks.

公开(公告)号：US20200174704A1

公开(公告)日：2020-06-04

申请号：US16700776

申请日：2019-12-02

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G06F3/06

Abstract: A method for operating a memory system including a memory device having a plurality of memory elements and a controller coupled to the plurality of memory elements through a plurality of different channels, the method comprising: calculating the number of dummy pages in partially closed blocks in the plurality of memory elements; generating at least one dummy page group by grouping the dummy pages based on a dummy page count; and performing a dummy program operation on the at least one dummy page group while a normal program operation may be performed.

公开(公告)号：US20190294371A1

公开(公告)日：2019-09-26

申请号：US16183384

申请日：2018-11-07

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G06F3/06 ,  G06F13/16 ,  G06F12/02 ,  G06F12/0868

Abstract: A memory system may include: a nonvolatile memory; a volatile memory; and a controller suitable for repeatedly entering and exiting from an automatic exclusive mode for each predetermined size of write data transferred from the host in a start period of the automatic exclusive mode, and allocating the volatile memory exclusively for performing a merge operation on the nonvolatile memory during an entry period of the automatic exclusive mode, the controller may include a command queue for storing plural commands transferred from the host, may use a predetermined operation in the start period of the automatic exclusive mode to calculate a processing time of write commands among the commands stored in the command queue and an entry time of the entry period of the automatic exclusive mode, and may schedule a processing order of the commands stored in the command queue according to the calculation result.

公开(公告)号：US20190221279A1

公开(公告)日：2019-07-18

申请号：US16043745

申请日：2018-07-24

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G11C29/08 ,  G11C29/50 ,  G11C29/52 ,  G11C16/10 ,  G06F12/02

CPC classification number: G11C29/08 ,  G06F12/0246 ,  G11C16/10 ,  G11C29/50 ,  G11C29/52 ,  G11C2029/0401

Abstract: A memory system includes a memory device including a plurality of memory blocks, a test mode unit suitable for determining a test mode, and a controller suitable for performing a fake write operation on the memory device corresponding to an operation result of the test mode unit.

公开(公告)号：US20190213079A1

公开(公告)日：2019-07-11

申请号：US16109015

申请日：2018-08-22

Applicant: SK hynix Inc.

Inventor： Jang-Hyun KIM ,  Jang-Hwan JUN ,  Jong-Min LEE

IPC: G06F11/14 ,  G11C7/20 ,  G11C7/14 ,  G06F9/4401 ,  G06F1/30

Abstract: An operating method of a memory system includes performing a boot-up operation, determining whether a sudden power-off recovery (SPOR) operation is performed successively a predetermined number of times, and performing additional SPOR operation when a predetermined waiting time elapses after performing the boot-up operation according to a result of the determining.

公开(公告)号：US20190066800A1

公开(公告)日：2019-02-28

申请号：US15927133

申请日：2018-03-21

Applicant: SK hynix Inc.

Inventor： Jong-Min LEE

IPC: G11C16/16 ,  G11C16/08 ,  G06F12/02 ,  G11C11/4074 ,  G11C16/30 ,  G06F1/32

CPC classification number: G11C16/16 ,  G06F1/3225 ,  G06F12/0246 ,  G06F2212/1032 ,  G06F2212/7205 ,  G06F2212/7211 ,  G11C11/4074 ,  G11C16/08 ,  G11C16/30

Abstract: A memory system includes: a nonvolatile memory device including a plurality of memory blocks; and a controller suitable for dividing the plurality of memory blocks into a first group and a second group, and controlling the memory blocks included the first group and the second group, respectively, wherein the controller is further suitable for: managing all operations except for an erase operation to the memory blocks of the first group through a first operation task; managing all operations except for an erase operation to the memory blocks of the second group through a second operation task; and managing the erase operation to the memory blocks of the first group and the memory blocks of the second group through an erase operation task.