公开(公告)号：US20240345949A1

公开(公告)日：2024-10-17

申请号：US18612896

申请日：2024-03-21

Applicant: Micron Technology, Inc.

Inventor： Daming Liu ,  Qingyuan Wang ,  Lei Cui ,  Wenjun Wu

IPC: G06F12/02

CPC classification number: G06F12/0246 ,  G06F2212/7201

Abstract: Methods, systems, and devices for techniques for logical-to-physical information compression are described. In some cases, a memory system may compress a logical-to-physical (L2P) mapping to expand the quantity of physical addresses mapped by the L2P mapping. For example, if a set of consecutive entries of an uncompressed L2P mapping includes consecutive physical addresses, the memory system may compress the consecutive entries into a single entry which includes a starting physical address of the consecutive physical addresses. Additionally, the memory system may include an indication of a starting logical address corresponding to the starting physical address in the compressed entry. To identify a physical address within the compressed entry, the memory system may determine an offset between a logical address corresponding to the physical address and the starting physical address using the indication, and may apply the offset to the starting physical address to determine the physical address.

公开(公告)号：US20240193095A1

公开(公告)日：2024-06-13

申请号：US17758335

申请日：2022-03-17

Applicant: Micron Technology, Inc.

Inventor： Liping Xu ,  Zhen Gu ,  Qingyuan Wang

IPC: G06F12/1009 ,  G06F12/1045

CPC classification number: G06F12/1009 ,  G06F12/1054 ,  G06F2212/7201

Abstract: Methods, systems, and devices for a sorted change log for physical page table compression are described. A mapping between a logical address and a physical address may be stored in a change log buffer. The mapping may be stored at a location of the change log buffer based on the logical address of the mapping relative to logical addresses of other mappings stored in the change log buffer. Based on storing mappings in the change log buffer based on logical addresses of the mappings, a set of mappings in the change log may include a set of sequentially-indexed logical addresses. A compressed entry for a logical-to-physical table may be generated based on the set of mappings.

公开(公告)号：US20240192888A1

公开(公告)日：2024-06-13

申请号：US17758332

申请日：2022-03-17

Applicant: Micron Technology, Inc.

Inventor： Na Zhu ,  Ling Shi ,  Bo Sun ,  Huachen Li ,  Qingyuan Wang

IPC: G06F3/06

CPC classification number: G06F3/0659 ,  G06F3/0611 ,  G06F3/0656 ,  G06F3/0683

Abstract: Methods, systems, and devices for low-latency processing for unmap commands are described. A plurality of commands including one or more unmap commands and one or more other types of commands may be received from a device. The one or more unmap commands may be stored in a queue used for unmap commands and the other commands may be stored in another queue. Ready-to-transfer messages for the one or more unmap commands stored in the queue may be transmitted to the device. In response to the ready-to-transfer messages, one or more messages including data for executing the one or more unmap commands may be received and stored in a portion of a buffer used for unmap commands.

公开(公告)号：US20240201860A1

公开(公告)日：2024-06-20

申请号：US18511814

申请日：2023-11-16

Applicant: Micron Technology, Inc.

Inventor： Wenjun Wu ,  Huachen Li ,  Xiaolai Zhu ,  Ling Shi ,  Qingyuan Wang

IPC: G06F3/06 ,  G06F12/1009

CPC classification number: G06F3/0613 ,  G06F3/0656 ,  G06F3/0679 ,  G06F12/1009

Abstract: Methods, systems, and devices for address mappings for random access operations are described. A portion of a L2P table may be loaded (e.g., to a buffer) upon receiving a write command (e.g., a random write command). In some instances, one or more entries (e.g., one or more mappings) included in the portion of the L2P table may be updated based on the write command. The portion of the L2P table may be maintained in the buffer during subsequent access operations, such as random read operations. The subsequent access operations may utilize the portion of the L2P table to access a memory device.