公开(公告)号：US12062387B2

公开(公告)日：2024-08-13

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: G11B7/24038 ,  G11B7/24062 ,  G11B7/243 ,  G11B7/26

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

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：US11922983B2

公开(公告)日：2024-03-05

申请号：US18174700

申请日：2023-02-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jia Xu ,  Yuhao Zou ,  Jun Xu

IPC: G09G3/32 ,  G02B6/42 ,  G11B7/127 ,  G11B7/1372 ,  G11B7/1384

CPC classification number: G11B7/1372 ,  G02B6/4203 ,  G11B7/127 ,  G11B7/1384

Abstract: The technology of this application relates to a data read/write apparatus and an electronic device, which relate to the data storage field, and can improve data read/write performance. The data read/write apparatus includes a first laser, configured to output a first optical pulse based on a control signal, where the control signal is a signal obtained based on to-be-written data, a dispersion compensator, configured to perform dispersion compensation on the first optical pulse to output a second optical pulse, and an optical fiber lens, connected to the dispersion compensator by using an optical fiber, and configured to focus the second optical pulse onto an optical storage medium, to write the to-be-written data to the optical storage medium.

公开(公告)号：US11656763B2

公开(公告)日：2023-05-23

申请号：US17306494

申请日：2021-05-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Xu ,  Junfeng Zhao ,  Yuangang Wang

IPC: G06F3/06 ,  G06F16/13

CPC classification number: G06F3/0607 ,  G06F3/067 ,  G06F3/0631 ,  G06F3/0643 ,  G06F3/0652 ,  G06F16/13

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：US11422703B2

公开(公告)日：2022-08-23

申请号：US16937946

申请日：2020-07-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qun Yu ,  Jun Xu ,  Yuangang Wang

IPC: G06F3/06 ,  G06F12/08 ,  G06F12/0868

Abstract: A storage system includes a management node and a plurality of storage nodes forming a redundant array of independent disks (RAID). When the management node determines that not all data in an entire stripe is updated based on a received write request, the management node sends update data chunk obtained from to-be-written data to corresponding storage node. The storage node do not directly update, based on the received update data chunks, data block stored in storage device of the storage node, but store the update data chunk into non-volatile memories (NVM) cache of the storage node and send the update data chunk to another storage node to backup. According to the data updating method, write amplification problems caused in a stripe update process can be reduced, thereby improving update performance of the storage system.

公开(公告)号：US20220262398A1

公开(公告)日：2022-08-18

申请号：US17733221

申请日：2022-04-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jia Xu ,  Jun Xu ,  Peng Lin

IPC: G11B7/09 ,  G11B7/0037

Abstract: A detection apparatus determines whether a recording layer of an optical disc is at a focal point of an objective lens. The detection apparatus includes an objective lens, a beam splitter, a reflector, a detector, and a servo controller. The reflector and the detector are disposed opposite to each other on two sides of an optical axis of the objective lens, and a normal line of the reflector is perpendicular to the optical axis. The beam splitter is disposed between the reflector and the detector and is located on the optical axis. The servo controller is connected to the detector.

公开(公告)号：US11237980B2

公开(公告)日：2022-02-01

申请号：US16910198

申请日：2020-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huan Zhang ,  Jun Xu ,  Guanyu Zhu

IPC: G06F12/10 ,  G06F12/1009 ,  G06F12/0882 ,  G06F12/14

Abstract: A file page table management method. The file page table management method is applied to a storage system in which a file system is created in a memory. According to the file page table management method, a mapping manner of a file page table can be dynamically adjusted based on an access type of an access request for accessing the memory, thereby improving memory access efficiency and saving memory space.

公开(公告)号：US20210342007A1

公开(公告)日：2021-11-04

申请号：US17373380

申请日：2021-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Xu ,  Fei Liu

IPC: G06F3/01 ,  G06F3/03 ,  G10L21/16 ,  G10L21/10

Abstract: The disclosure relates to technology for haptic stimulation. According to one aspect of the present disclosure, there is provided a haptic stimulation system comprising a haptic stimulation interface comprising a pattern of stimulation elements configured to stimulate receptors in skin of a user. The haptic stimulation system further comprises a control circuit configured to present information in the haptic stimulation interface in accordance with a presentation mode that is tailored to the user.

公开(公告)号：US11030092B2

公开(公告)日：2021-06-08

申请号：US16748372

申请日：2020-01-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Xu ,  Qun Yu ,  Licheng Chen

IPC: G06F12/02 ,  G06F3/06 ,  G06F12/0804 ,  G06F12/0868 ,  G06F12/0866

Abstract: An access request processing apparatus comprises, a processor determines an object cache page according to a write request when receiving the write request. After determining that the NVM stores a log chain of the object cache page, the processor inserts, into the log chain of the object cache page, a second data node recording information about a second log data chunk. The log chain already includes a first data node recording information about the first log data chunk. The second log data chunk is at least partial to-be-written data of the write request. Then, the processor sets, in the first data node, data that is in the first log data chunk and that overlaps the second log data chunk to invalid data.

公开(公告)号：US20200159655A1

公开(公告)日：2020-05-21

申请号：US16748372

申请日：2020-01-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Xu ,  Qun Yu ,  Licheng Chen

IPC: G06F12/02 ,  G06F3/06 ,  G06F12/0866 ,  G06F12/0868 ,  G06F12/0804

Abstract: An access request processing apparatus comprises, a processor determines an object cache page according to a write request when receiving the write request. After determining that the NVM stores a log chain of the object cache page, the processor inserts, into the log chain of the object cache page, a second data node recording information about a second log data chunk. The log chain already includes a first data node recording information about the first log data chunk. The second log data chunk is at least partial to-be-written data of the write request. Then, the processor sets, in the first data node, data that is in the first log data chunk and that overlaps the second log data chunk to invalid data.

公开(公告)号：US10649897B2

公开(公告)日：2020-05-12

申请号：US16021555

申请日：2018-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jun Xu ,  Qun Yu ,  Yuangang Wang

IPC: G06F12/00 ,  G06F11/00 ,  G06F12/0804 ,  G06F11/16 ,  G06F12/0868 ,  G06F12/02 ,  G06F11/14

Abstract: An access request processing method and apparatus, and a computer device are disclosed. The computer device includes a processor, a dynamic random-access memory (DRAM), and a non-volatile memory (NVM). When receiving a write request, the processor may identify an object cache page according to the write request. The processor obtains the to-be-written data from a buffer according to a buffer pointer in the write request, the to-be-written data including a new data chunk to be written into the object cache page. The processor then inserts a new data node into a log chain of the object cache page, where the NVM stores data representing the log chain of the object cache page. The new data node includes information regarding the new data chunk of the object cache page. The computer device provided in this application can reduce system overheads while protecting data consistency.