公开(公告)号：US20170168952A1

公开(公告)日：2017-06-15

申请号：US15445349

申请日：2017-02-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guanyu ZHU ,  Jun XU ,  Qun YU

IPC: G06F12/1009

CPC classification number: G06F12/1009 ,  G06F3/0643 ,  G06F12/00 ,  G06F12/109 ,  G06F17/30091 ,  G06F17/30123 ,  G06F2212/1024 ,  G06F2212/651 ,  G06F2212/656 ,  G06F2212/657

Abstract: A file access method and apparatus, and a storage system are provided. After receiving a file access request from a process, a first physical address space is accessed according to a preset first virtual address space and a preset first mapping relationship between the first virtual address space and the first physical address space, where the first physical address space stores a file system. After obtaining an index node of a target file from the first physical address space according to a file identifier of the target file carried in the file access request, a file page table of the target file is obtained according to file page table information. The file page table records a second physical address space in the first physical address space. The target file is accessed according to the second physical address space.

公开(公告)号：US20170153822A1

公开(公告)日：2017-06-01

申请号：US15428527

申请日：2017-02-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun XU ,  Junfeng ZHAO ,  Yuangang WANG

IPC: G06F3/06

CPC classification number: G06F3/0607 ,  G06F3/0631 ,  G06F3/0643 ,  G06F3/0652 ,  G06F3/067 ,  G06F17/30091

Abstract: A file management method, a distributed storage system, and a management node are disclosed. In the distributed storage system, after receiving a file creation request sent by a host for requesting to create a file in a distributed storage system, a management node allocates, to the file, first virtual space from global virtual address space of the distributed storage system, where local virtual address space of each storage node in the distributed storage system is corresponding to a part of the global virtual address space. Then, the management node records metadata of the file, where the metadata of the file includes information about the first virtual space, and the information about the first virtual space is used to point to local virtual address space of a storage node that is used to store the file. Further, the management node sends, the information about the first virtual space to the host.

公开(公告)号：US20230282234A1

公开(公告)日：2023-09-07

申请号：US18197465

申请日：2023-05-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jingsong WEI ,  Jun XU ,  Yang WANG ,  Renqi LIU ,  Hongwei TANG

IPC: G11B7/26 ,  G11B7/24062 ,  G11B7/243

CPC classification number: G11B7/268 ,  G11B7/24062 ,  G11B7/243 ,  G11B2220/2541 ,  G11B2007/24314 ,  G11B2007/24316

Abstract: An optical storage medium, a method for preparing an optical storage medium, and a system are provided. In this application, the optical storage medium includes a substrate and at least one data layer, the data layer includes a recording layer and a spacer layer, the recording layer is located on the spacer layer, and the data layer is located above the substrate. The recording layer may store data, the recording layer includes an area in which a phase change material is distributed and an area in which no phase change material is distributed, and the two different areas may indicate different data.

公开(公告)号：US20230134189A1

公开(公告)日：2023-05-04

申请号：US17908626

申请日：2021-03-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun XU ,  Yu LI ,  Liang WANG ,  Rui NING ,  Qiangguo JIANG

IPC: A63F13/525 ,  G09G3/00

Abstract: A refresh rate switching method and an electronic device are provided. In the method, the electronic device dynamically switches a corresponding screen refresh rate by determining whether a current display image is a high frame rate scenario or a standard frame rate scenario. In the high frame rate scenario, a relatively high screen refresh rate is used to support a high display frame rate. In this way, a user can obtain experience of the high display frame rate, and the display image is smooth without motion blur. In the standard frame rate scenario, a default low screen refresh rate is used to reduce power consumption of an entire system.

公开(公告)号：US20180293075A1

公开(公告)日：2018-10-11

申请号：US16006878

申请日：2018-06-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiyan LIU ,  Jun XU ,  Qun YU

IPC: G06F9/38

CPC classification number: G06F9/38 ,  G06F9/5066 ,  G06F2209/5011

Abstract: A data processing method and apparatus are provided. A system includes a CPU pool and a storage pool, a mapper node and a reducer node respectively run on different CPUs in the CPU pool, and a remote storage area shared by the mapper node and the reducer node is delimited in the storage pool. In this method, the mapper node executes a map task, and stores a data segment obtained by executing the map task, into the remote storage area; and the reducer node directly obtains a data segment to be processed by the reducer node from the remote storage area, and executes a reduce task on the data segment. The method omits some actions in the prior art, and shortens a time for executing the Map/Reduce task.