公开(公告)号：US20190238930A1

公开(公告)日：2019-08-01

申请号：US16376425

申请日：2019-04-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Xiong ,  Li Xue ,  Yihong Huang ,  Youqing Yang

IPC: H04N21/442 ,  H04N21/647 ,  H04N21/6437 ,  H04N21/44

CPC classification number: H04N21/442 ,  H04N17/00 ,  H04N17/004 ,  H04N21/44008 ,  H04N21/6437 ,  H04N21/64792

Abstract: A video quality assessment method and device are provided. The method includes: obtaining a video quality assessment parameter of a to-be-assessed video, where the video quality assessment parameter of the to-be-assessed video includes an average packet loss gap of the to-be-assessed video; determining packet loss dispersion of the to-be-assessed video based on the video quality assessment parameter of the to-be-assessed video; and determining quality of the to-be-assessed video based on a packet loss rate of the to-be-assessed video, an average consecutive packet loss length of the to-be-assessed video, the packet loss dispersion of the to-be-assessed video, and attribute information of the to-be-assessed video. In the technical solution, during video quality assessment, impact of packet loss distribution indicated by the packet loss dispersion on the video quality is considered. Therefore, video quality assessment accuracy can be improved.

公开(公告)号：US20230174826A1

公开(公告)日：2023-06-08

申请号：US17922258

申请日：2021-04-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Huan Pang ,  Chengwen Hu ,  Junyan Tan ,  Yujia Zhou ,  Yin Li ,  Yihong Huang

IPC: C09J7/29 ,  C09J7/38 ,  G02B1/14 ,  G02B1/111

CPC classification number: C09J7/29 ,  C09J7/385 ,  G02B1/14 ,  G02B1/111 ,  C09J2203/326 ,  C09J2301/41 ,  C09J2467/006 ,  C09J2479/086 ,  C09J2475/006 ,  C09J2433/006 ,  C09J2433/00 ,  C09J2471/006 ,  C09J2483/006 ,  G02B1/16

Abstract: A protective film includes an adhesive layer and a base film layer that are stacked. The adhesive layer is configured to adhere to a foldable display. The base film layer includes one or more layers of high-modulus base film and one or more layers of low-modulus base film. An elastic modulus of the high-modulus base film is greater than an elastic modulus of the low-modulus base film. The high-modulus base film and the low-modulus base film are alternately stacked. A surface layer in the base film layer and non-adjacent to the adhesive layer is the high-modulus base film. The protective film is configured to be firmly attached to the foldable display, resists rebounding and warping when the display is bent, and protects the foldable display.

公开(公告)号：US11591254B2

公开(公告)日：2023-02-28

申请号：US16616335

申请日：2017-05-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Qiuchun Sheng ,  Yihong Huang

IPC: C03C3/083 ,  C03C21/00 ,  C03C3/112 ,  C03C1/00 ,  G06F3/041

Abstract: Aluminosilicate glass, chemically strengthened glass, and an application are provided. After the aluminosilicate glass is chemically strengthened, a glass substrate featuring a good mechanical strength and high chemical stability can be obtained, thereby meeting a requirement of cover glass for a glass material. The aluminosilicate glass does not include a B element and a P element, and includes at least silicon oxide, aluminium oxide, alkali metal oxide, and gallium oxide. The alkali metal oxide is at least one of lithium oxide and sodium oxide. The glass is used for production of the cover glass.

公开(公告)号：US10917643B2

公开(公告)日：2021-02-09

申请号：US16284664

申请日：2019-02-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jie Xiong ,  Youqing Yang ,  Yihong Huang

IPC: H04N19/114 ,  H04N19/177 ,  H04N19/142 ,  G06K9/00 ,  H04N19/48 ,  H04N19/146 ,  H04N19/159 ,  G06T7/20 ,  H04N19/87

Abstract: A method and an apparatus for detecting a scene change frame in a video and a system, where when a scene change frame in the video is detected, whether a maximum P frame (Pmax) in all P frames in a group of pictures (GOP) of the video is a scene change frame is determined based on a relative relationship between a size Pkmax of Pmax and a median or an average of sizes of a plurality of I frames between Pmax and a scene change frame closest to Pmax and before Pmax, or a relative relationship between Pkmax and a median or an average of sizes of a plurality of P frames in the GOP to detect a scene change frame in the P frames such that missed detection of a scene change frame is effectively reduced.

公开(公告)号：US20210014174A1

公开(公告)日：2021-01-14

申请号：US17033100

申请日：2020-09-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Nu Xia ,  Jian Chen ,  Xia Zhu ,  Jun Zhou ,  Yihong Huang ,  Ji Li ,  Naiwen Wei

IPC: H04L12/927 ,  H04L12/18 ,  H04L12/741

Abstract: A method, a device, and a system for transmitting a multicast packet are provided. The method includes: when a device that is in a source subnet and that is connected to a core network receives a multicast packet of a target multicast group, determining addresses of devices that are in a plurality of destination subnets corresponding to the target multicast group and that are connected to the core network, replicating the multicast packet, to obtain a plurality of multicast packets whose quantity is equal to a quantity of the plurality of destination subnets, separately adding outer encapsulation to each multicast packet, and forwarding the multicast packet to which the outer encapsulation is added, where a destination address in the outer encapsulation is an address of a device that is in each destination subnet and that is connected to the core network.

公开(公告)号：US10834383B2

公开(公告)日：2020-11-10

申请号：US16283728

申请日：2019-02-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jie Xiong ,  Youqing Yang ,  Yihong Huang

IPC: H04N7/12 ,  H04N17/04 ,  H04N21/44 ,  H04N19/114 ,  H04N19/154 ,  H04N17/00

Abstract: When video quality is assessed, a proportion of a damaged data caused by packet loss in a video frame in which the damaged data is located is considered, and other factors are also considered, such as a position of the damaged data in the video frame and impact of a scene in which the video frame is located on the video frame or a video frame located after the video frame. Therefore, accuracy of quality assessment is higher.

公开(公告)号：US10237124B2

公开(公告)日：2019-03-19

申请号：US15494128

申请日：2017-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zitao Wang ,  Qin Wu ,  Yihong Huang ,  Liang Xia

IPC: H04L12/24

Abstract: This application discloses a network operation, administration, and maintenance (OAM) method, an apparatus, and a system. The method includes: receiving a fault alarm message sent by an MP, where the fault alarm message includes fault information; determining according to the fault alarm message, a first maintenance set to which the MP belongs, where the first maintenance set includes MPs using a first OAM technology; querying an OAM database, to obtain a second maintenance set interacting with the first maintenance set, where the second maintenance set includes MPs using a second OAM technology; and sending a fault notification message to all MPs in the second maintenance set or an MP that is determined according to a policy in the second maintenance set. Therefore, a related fault alarm may be centrally notified on a management plane, and is decoupled from a specific OAM technology, thereby greatly reducing an implementation difficulty.

公开(公告)号：US20170289041A1

公开(公告)日：2017-10-05

申请号：US15625638

申请日：2017-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jin Li ,  Feng Li ,  Yihong Huang

IPC: H04L12/801 ,  H04L29/06

Abstract: A data transmission method and an apparatus are provided. The data transmission method in the present invention includes: determining, by a first device and according to data stream information, whether a data transfer protocol TCP parameter in a data stream corresponding to the data stream information needs to be modified, where the data stream information includes at least one of the following information: information about the first device, information about a second device, service information, or network status information; if determining that the TCP parameter needs to be modified, modifying, by the first device, the TCP parameter, to obtain a modified TCP parameter; and generating, by the first device, a modification result of the TCP parameter.