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公开(公告)号：US20240414460A1
公开(公告)日：2024-12-12
申请号：US18814387
申请日：2024-08-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhicheng Ye , Benbo Xu , Zongzhao Zheng , Tianhai Chang
Abstract: An optical distribution network ODN apparatus includes an optical splitting module, a control chip, a first optical port connected to the OLT, a second optical port connected to a next-level ODN apparatus, and a plurality of third photoelectric composite ports connected to the plurality of ONUs. The control chip sends a plurality of electrical signals that carry the port identification information to the plurality of corresponding ONUs. The optical splitting module performs power splitting on a first optical signal sent by the OLT to obtain a second optical signal transmitted to the next-level ODN apparatus and a plurality of third optical signals transmitted to the plurality of ONUs. The optical splitting module can be further configured to separately receive upstream optical signals of the plurality of corresponding ONUs and to transmit the upstream optical signals carrying identification information of the ONUs to the OLT.
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公开(公告)号：US20230063712A1
公开(公告)日：2023-03-02
申请号：US18055143
申请日：2022-11-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiao Li , Qingcong Lu , Tianhai Chang
IPC: G02B27/01
Abstract: This application provides a head-up display apparatus and a display method. The display method comprising: obtaining line-of-sight information of a user, and determining a target display area of a head-up display based on the line-of-sight information, wherein the target display area is a sub-area of an overall display area of the head-up display; adjusting a light field to generate a real image of target content based on the target content in the target display area; and forming a light beam based on the real image of the target content, and projecting the light beam onto a windshield, to generate a virtual image of the target content.
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公开(公告)号：US08817823B2
公开(公告)日：2014-08-26
申请号：US13735858
申请日：2013-01-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xinyu Shen , Jianmei Zhang , Congqi Li , Tianhai Chang , Hao Liu , Zhiguo Liu
CPC classification number: H04J3/0602 , H04J3/0667 , H04J14/0201
Abstract: A method and a device for time synchronization are disclosed according to the embodiments of the present invention. The method includes: selecting, by a slave device, a port of a single-fiber bi-directional line as a synchronization port of a 1588 clock protocol; specifying a work mode of the synchronization port; exchanging a 1588 clock synchronization packet with a master device through the synchronization port according to the work mode; acquiring transmission time information and restore a system clock according to the 1588 clock synchronization packet; and adjusting the system clock according to the work mode and the transmission time information. The device includes: a line processing module, a clock recovery module and a clock adjustment module. Through the method and the device, zero-error time synchronization is implemented; and in the case of unfixed path delay, the time synchronization can also be implemented.
Abstract translation: 根据本发明的实施例公开了一种用于时间同步的方法和装置。 该方法包括：由从设备选择单光纤双向线路的端口作为1588时钟协议的同步端口; 指定同步端口的工作模式; 根据工作模式通过同步端口与主设备交换1588时钟同步报文; 根据1588时钟同步包获取传输时间信息并恢复系统时钟; 并根据工作模式和传输时间信息调整系统时钟。 该设备包括：线路处理模块，时钟恢复模块和时钟调整模块。 通过该方法和设备，实现零错误时间同步; 并且在非固定路径延迟的情况下，也可以实现时间同步。
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公开(公告)号：US10778570B2
公开(公告)日：2020-09-15
申请号：US15834683
申请日：2017-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Yan , Zhiquan Liao , Tianhai Chang , Hongtao Lu , Min Chen , Qian Xiong
IPC: H04L12/703 , H04L12/24 , H04W76/19 , H04W76/18 , H04W24/04
Abstract: In a network protection method, a network node, and a communications system provided in embodiments of the present disclosure, when signal degrade or signal fail occurs in a service transmission path, a communication status of a source node of a current protection segment is obtained, and whether to perform protection switching is determined according to the communication status of the source node and a communication status of a local communication path. This can avoid erroneous switching to some extent, thereby improving protection switching accuracy of a communications network.
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公开(公告)号：US10547378B2
公开(公告)日：2020-01-28
申请号：US15830792
申请日：2017-12-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Tianhai Chang , Rui He , Hao Liu
IPC: H04B10/071 , H04B10/077 , H04B10/25 , H04J14/08
Abstract: An optical fiber status detection method includes: alternately sending, by a first station, an optical time domain reflectometer (OTDR) pulse and optical supervisory channel (OSC) data to a second station on a same channel, where the second station is a neighboring station of the first station; and receiving, by the first station, reflection light returned by the OTDR pulse by using an optical fiber between the first station and the second station, and obtaining an OTDR probe value according to the reflection light.
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Patent Agency Ranking
公开(公告)号：US20180109445A1
公开(公告)日：2018-04-19
申请号：US15834683
申请日：2017-12-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jun Yan , Zhiquan Liao , Tianhai Chang , Hongtao Lu , Min Chen , Qian Xiong
IPC: H04L12/703 , H04W24/04 , H04L12/24
Abstract: In a network protection method, a network node, and a communications system provided in embodiments of the present disclosure, when signal degrade or signal fail occurs in a service transmission path, a communication status of a source node of a current protection segment is obtained, and whether to perform protection switching is determined according to the communication status of the source node and a communication status of a local communication path. This can avoid erroneous switching to some extent, thereby improving protection switching accuracy of a communications network.
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7.发明授权公开(公告)号：US12055712B2
公开(公告)日：2024-08-06
申请号：US17986381
申请日：2022-11-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Lei Mao , Tianhai Chang , Shimao Li , Zhiyong Huang
CPC classification number: G02B27/0101 , B60K35/00 , G02B27/286 , G09G3/002 , B60K35/23 , B60K2360/23 , G02B2027/0123 , G09G2380/10
Abstract: This application provides example multi-focal-plane image generation apparatuses, example head-up display apparatuses, example methods, and example devices. One example apparatus includes a pattern generation device and a focal length adjuster. The pattern generation device is configured to generate a light beam that carries image information, and irradiate the light beam to a surface of the focal length adjuster. The focal length adjuster is configured to perform focal length adjustment on the light beam that is irradiated to the surface of the focal length adjuster to generate a plurality of focal planes of the multi-focal-plane image generation apparatus.
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公开(公告)号：US20240236531A9
公开(公告)日：2024-07-11
申请号：US18544932
申请日：2023-12-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeshan Chang , Tianhai Chang , Ning Deng
IPC: H04Q11/00
CPC classification number: H04Q11/0062 , H04Q11/0005 , H04Q2011/0032 , H04Q2011/0073
Abstract: A communication system, a transmitter, and a communication method. The communication system includes M transmitters, N receivers, and an optical switch network. Both N and M are positive integers greater than 1. The optical switch network includes one or more optical switches. A plurality of optical paths are configured in the optical switch network. When the transmitter communicates with the receiver, the transmitter can determine, from the plurality of optical paths, a target optical path from a source communication node to a destination communication node. After the optical switch network receives a target optical signal sent by the transmitter, the optical switch directly sends the target optical signal to the receiver based on the target optical path.
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公开(公告)号：US20240171270A1
公开(公告)日：2024-05-23
申请号：US18425989
申请日：2024-01-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xin Zhang , Yanbo Li , Tianhai Chang
IPC: H04B10/032 , H04B10/038
CPC classification number: H04B10/032 , H04B10/038
Abstract: This application provides an optical communication system, a vehicle, and an industrial optical network, and relates to the field of optical communications. A light source module in the optical communication system can be connected to a group of first nodes separately through two carrier bearer networks. Therefore, even if either carrier bearer network is faulty, the other carrier bearer network can continue to transmit an optical carrier, thereby effectively improving reliability of optical carrier transmission, and further improving reliability of the optical communication system. In addition, because the two carrier bearer networks are independent of each other and can work simultaneously, after either carrier bearer network is faulty, no failover is needed. This can avoid interrupted transmission of the optical carrier caused by the failover, and further avoid interrupted transmission of a service optical signal.
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公开(公告)号：US11381335B2
公开(公告)日：2022-07-05
申请号：US16716060
申请日：2019-12-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tianhai Chang
Abstract: A method and an apparatus for spectrum defragmentation, where the method includes: obtaining, by a transmit end, a target data stream; sending the target data stream on one line using a to-be-adjusted frequency band; adjusting, on another line, an occupied frequency band of the target data stream from the to-be-adjusted frequency band to a target frequency band; switching the target data stream to the other line; and transmitting the target data stream using the target frequency band.
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