公开(公告)号：US11336305B2

公开(公告)日：2022-05-17

申请号：US16935593

申请日：2020-07-22

Applicant: KIOXIA CORPORATION

Inventor： Kenji Funaoka ,  Takuya Haga ,  Toru Katagiri ,  Konosuke Watanabe

IPC: H03M13/35 ,  H03M13/37 ,  G11C29/52 ,  G06F11/10 ,  G11C29/04

Abstract: A memory system, which is connectable to a host, includes a non-volatile memory and a controller configured to store data in the non-volatile memory and in a memory region within the host and read the data from the memory region within the host. The controller includes a first encoding/decoding circuit configured to execute encoding/decoding with a first encoding scheme, a second encoding/decoding circuit configured to execute encoding/decoding with a second encoding scheme having a higher error correcting capability than an error correcting capability of the first encoding scheme, an encoding scheme selecting circuit configured to select an encoding/decoding circuit from the first encoding/decoding circuit and the second encoding/decoding circuit to perform encoding of data to be stored in the memory region, based on information about the data read from the memory region.

公开(公告)号：US12124707B2

公开(公告)日：2024-10-22

申请号：US18176450

申请日：2023-02-28

Applicant: Kioxia Corporation

Inventor： Konosuke Watanabe ,  Hajime Yamazaki

IPC: G06F3/06

CPC classification number: G06F3/0619 ,  G06F3/0659 ,  G06F3/0679

Abstract: A memory controller of a memory system classifies input and output commands issued by a host into a group of read commands and a group of write commands, and manages the group of read commands and the group of write commands using first and second queues, respectively. The controller continuously processes a first group of commands among the group of read commands and the group of write commands until a first time period has elapsed from a start of the continuous processing of the first group of commands. In response to the first time period having elapsed, the controller switches a process target from the first group of commands to a second group of commands that is different from the first group of commands and selected among the group of read commands and the group of write commands.

公开(公告)号：US11609844B2

公开(公告)日：2023-03-21

申请号：US16806173

申请日：2020-03-02

Applicant: KIOXIA CORPORATION

Inventor： Keiri Nakanishi ,  Konosuke Watanabe ,  Kohei Oikawa ,  Daisuke Iwai

IPC: G06F12/02 ,  G06F13/16

Abstract: A memory system includes a first memory that is nonvolatile, a second memory that is volatile, and a memory controller. The memory controller is configured to store first information in the second memory. The first information includes management information. The memory controller is further configured to compress the first information. The compressed first information is second information. The memory controller is configured to store the second information in the first memory.