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公开(公告)号：US20250054553A1
公开(公告)日：2025-02-13
申请号：US18930319
申请日：2024-10-29
Applicant: KIOXIA CORPORATION
Inventor： Tsukasa TOKUTOMI , Masanobu SHIRAKAWA , Marie TAKADA , Shohei ASAMI , Masamichi FUJIWARA
Abstract: According to one embodiment, a memory system includes a semiconductor memory and a controller. The semiconductor memory includes first to fourth word lines and first to fourth memory cells. The controller is configured to issue first and second instructions. The controller is further configured to execute a first operation to obtain a first read voltage based on a threshold distribution of the first memory cell, and a second operation to read data from the second memory cell.
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公开(公告)号：US20240420778A1
公开(公告)日：2024-12-19
申请号：US18815516
申请日：2024-08-26
Applicant: Kioxia Corporation
Inventor： Tsukasa TOKUTOMI , Masanobu SHIRAKAWA , Kengo KUROSE , Marie TAKADA , Ryo YAMAKI , Kiyotaka IWASAKI , Yoshihisa KOJIMA
IPC: G11C16/26 , G06F3/06 , G06F11/10 , G11C11/56 , G11C16/04 , G11C16/08 , G11C29/52 , H10B43/27 , H10B43/35
Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a memory controller. The memory controller is configured: to store, in a buffer, a data set read from a cell unit, and an expected data set generated by an error correction on the data set; to count a number of first and second memory cells corresponding to a first and a second combination of data in the data set and the expected data set, respectively, among the memory cells in the cell unit; to calculate a shift amount of a read voltage used in a read operation from the cell unit, based on the number of the first and second memory cells; and to apply the shift amount to a next read operation from the first cell unit.
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公开(公告)号：US20220215751A1
公开(公告)日：2022-07-07
申请号：US17705766
申请日：2022-03-28
Applicant: KIOXIA CORPORATION
Inventor： Marie TAKADA , Masanobu SHIRAKAWA
Abstract: A driving support system includes a first monitoring device on a first object, the first monitoring device having a first controller, a first camera, and a first display, a second monitoring device on a second object, the second monitoring device having a second controller and a second camera, and a server in communication with the first and second monitoring devices. The first and second controllers are each detect a target in images acquired from the respective first or second camera, calculate target information for the target, and transmit the target information to the server. The server generates list information including the target information from the first and second monitoring devices, and transmits the list information to the first and second monitoring devices. The first controller further generates a map according to the list information received from the server, and displays the map on the first display.
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公开(公告)号：US20210375372A1
公开(公告)日：2021-12-02
申请号：US17117937
申请日：2020-12-10
Applicant: Kioxia Corporation
Inventor： Kenji SAKURADA , Naomi TAKEDA , Masanobu SHIRAKAWA , Marie TAKADA
Abstract: A memory system in an embodiment includes a first memory cell array which is a nonvolatile memory cell array, a controller configured to control read and write of data, a first data latch group used for input and output of the data between the controller and the first memory cell array, and at least one second data latch group in which stored data is maintained when the data is read from the first memory cell array by the controller. The controller is configured to store management information in the at least one second data latch group when or before executing a read process for the data from the first memory cell array, the management information being in a second memory cell array and used for read of the data.
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公开(公告)号：US20250022371A1
公开(公告)日：2025-01-16
申请号：US18897414
申请日：2024-09-26
Applicant: Kioxia Corporation
Inventor： Marie TAKADA , Masanobu SHIRAKAWA
Abstract: A driving support system includes a first monitoring device on a first object, the first monitoring device having a first controller, a first camera, and a first display, a second monitoring device on a second object, the second monitoring device having a second controller and a second camera, and a server in communication with the first and second monitoring devices. The first and second controllers each detect a target in images acquired from the respective first or second camera, calculate target information for the target, and transmit the target information to the server. The server generates list information including the target information from the first and second monitoring devices, and d transmits the list information to the first and second monitoring devices. The first controller further generates a map according to the list information received from the server, and displays the map on the first display.
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Patent Agency Ranking
公开(公告)号：US20240095112A1
公开(公告)日：2024-03-21
申请号：US18450239
申请日：2023-08-15
Applicant: Kioxia Corporation
Inventor： Marie TAKADA , Masanobu SHIRAKAWA , Naomi TAKEDA
CPC classification number: G06F11/073 , G06F12/0246
Abstract: According to an embodiment, a controller acquires a first temperature detection value and executes an acquisition operation on a first storage area. The controller converts a first voltage value into a second voltage value representing the read voltage in a temperature set value based on the first temperature detection value and records the second voltage value. The acquisition operation is an operation of determining, by using the read voltages, whether memory cells are ON or OFF and acquiring the first voltage value representing the read voltage for suppressing error bits. After that, the controller acquires a second temperature detection value and converts the second voltage value into a third voltage value representing the read voltage in the second temperature detection value. The controller reads data from the memory cells by using, as the read voltage, a voltage indicated by the third voltage value.
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公开(公告)号：US20230297473A1
公开(公告)日：2023-09-21
申请号：US18324226
申请日：2023-05-26
Applicant: KIOXIA CORPORATION
Inventor： Kengo KUROSE , Masanobu SHIRAKAWA , Marie TAKADA
CPC classification number: G06F11/1068 , G11C16/0483 , G11C11/5671 , G11C16/26 , G11C11/5642
Abstract: According to an embodiment, a memory controller obtains first data in a first page using a first voltage, obtains a first shift amount based on a first and second number. The first and second numbers represent numbers of bits each of which has different values in a first and second manner between the first data and first expected data. The controller obtains second data in the second page using a second voltage and a second shift amount, and obtains a third shift amount based on a third and fourth number, the third and fourth numbers respectively represent numbers of bits each of which has different values in the first and second manner between the second data and second expected data.
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公开(公告)号：US20230259287A1
公开(公告)日：2023-08-17
申请号：US17942541
申请日：2022-09-12
Applicant: Kioxia Corporation
Inventor： Marie TAKADA , Masanobu SHIRAKAWA
IPC: G06F3/06
CPC classification number: G06F3/0619 , G06F3/0679 , G06F3/064 , G06F3/0653
Abstract: According to one embodiment, a memory system includes a nonvolatile memory including a plurality of blocks each including a plurality of cell units, each of the cell units including a plurality of memory cells; and a memory controller. The memory controller is configured to read second data from a second cell unit in a first block in response to first data being written in a first cell unit in the first block, and reserve refresh processing for the first block when the second data satisfies a condition.
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公开(公告)号：US20230223097A1
公开(公告)日：2023-07-13
申请号：US18180944
申请日：2023-03-09
Applicant: Kioxia Corporation
Inventor： Marie TAKADA , Masanobu SHIRAKAWA
CPC classification number: G11C29/42 , G11C29/50004 , G11C29/18 , G11C29/1201 , G11C29/4401 , G11C2029/1202
Abstract: According to one embodiment, a memory system includes: a controller configured to execute an error correction process on first data read from a first area at a first address of a memory device and determine a read level used for reading data at the first address according to a result of the correction process. The controller executes the correction process on first frame data of the first data. When the correction process on the first frame data has failed, the controller executes the correction process on second frame data of the first data. When the correction process on the second frame data has succeeded, the controller determines the read level based on a result of comparison between the second frame data and a result of the correction process on the second frame data.
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公开(公告)号：US20230088099A1
公开(公告)日：2023-03-23
申请号：US18053271
申请日：2022-11-07
Applicant: Kioxia Corporation
Inventor： Kenji SAKURADA , Naomi TAKEDA , Masanobu SHIRAKAWA , Marie TAKADA
Abstract: A memory system includes a first memory cell array which is a nonvolatile memory cell array, a controller configured to control read and write of data, a first data latch group used for input and output of the data between the controller and the first memory cell array, and at least one second data latch group in which stored data is maintained when the data is read from the first memory cell array by the controller. The controller is configured to store management information in the at least one second data latch group when or before executing a read process for the data from the first memory cell array, the management information being in a second memory cell array and used for read of the data.
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