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1. 发明申请

US20230063712A1 Head-Up Display Apparatus and Head-Up Display Method 有权
公开(公告)号：US20230063712A1
公开(公告)日：2023-03-02
申请号：US18055143
申请日：2022-11-14
申请人： Huawei Technologies Co., Ltd.
发明人： Xiao Li , Qingcong Lu , Tianhai Chang
IPC分类号： G02B27/01
摘要： 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.

2. 发明授权

US08817823B2 Method and device for time synchronization 有权
标题翻译：时间同步的方法和设备
公开(公告)号：US08817823B2
公开(公告)日：2014-08-26
申请号：US13735858
申请日：2013-01-07
申请人： Huawei Technologies Co., Ltd.
发明人： Xinyu Shen , Jianmei Zhang , Congqi Li , Tianhai Chang , Hao Liu , Zhiguo Liu
IPC分类号： H04J3/06 , H04J14/02
CPC分类号： H04J3/0602 , H04J3/0667 , H04J14/0201
摘要： 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.
摘要翻译：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。

3. 发明授权

US10778570B2 Network protection method, network node and system 有权
公开(公告)号：US10778570B2
公开(公告)日：2020-09-15
申请号：US15834683
申请日：2017-12-07
申请人： Huawei Technologies Co., Ltd.
发明人： Jun Yan , Zhiquan Liao , Tianhai Chang , Hongtao Lu , Min Chen , Qian Xiong
IPC分类号： H04L12/703 , H04L12/24 , H04W76/19 , H04W76/18 , H04W24/04
摘要： 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.

4. 发明授权

US10547378B2 Optical fiber status detection method, optical supervisory unit, and station 有权
公开(公告)号：US10547378B2
公开(公告)日：2020-01-28
申请号：US15830792
申请日：2017-12-04
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Tianhai Chang , Rui He , Hao Liu
IPC分类号： H04B10/071 , H04B10/077 , H04B10/25 , H04J14/08
摘要： 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.

5. 发明申请

US20180109445A1 Network Protection Method, Network Node and System 审中-公开
公开(公告)号：US20180109445A1
公开(公告)日：2018-04-19
申请号：US15834683
申请日：2017-12-07
申请人： Huawei Technologies Co., Ltd.
发明人： Jun Yan , Zhiquan Liao , Tianhai Chang , Hongtao Lu , Min Chen , Qian Xiong
IPC分类号： H04L12/703 , H04W24/04 , H04L12/24
摘要： 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.

6. 发明授权

US12055712B2 Multi-focal-plane image generation apparatus, head-up display apparatus, related method, and device 有权
公开(公告)号：US12055712B2
公开(公告)日：2024-08-06
申请号：US17986381
申请日：2022-11-14
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Lei Mao , Tianhai Chang , Shimao Li , Zhiyong Huang
IPC分类号： G02B27/01 , B60K35/00 , G02B27/28 , G09G3/00 , B60K35/23
CPC分类号： G02B27/0101 , B60K35/00 , G02B27/286 , G09G3/002 , B60K35/23 , B60K2360/23 , G02B2027/0123 , G09G2380/10
摘要： 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.

7. 发明公开

US20240236531A9 COMMUNICATION SYSTEM, TRANSMITTER, AND COMMUNICATION METHOD 审中-公开
公开(公告)号：US20240236531A9
公开(公告)日：2024-07-11
申请号：US18544932
申请日：2023-12-19
申请人： Huawei Technologies Co., Ltd.
发明人： Zeshan Chang , Tianhai Chang , Ning Deng
IPC分类号： H04Q11/00
CPC分类号： H04Q11/0062 , H04Q11/0005 , H04Q2011/0032 , H04Q2011/0073
摘要： 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.

8. 发明公开

US20240171270A1 OPTICAL COMMUNICATION SYSTEM, VEHICLE, AND INDUSTRIAL OPTICAL NETWORK 审中-公开
公开(公告)号：US20240171270A1
公开(公告)日：2024-05-23
申请号：US18425989
申请日：2024-01-29
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Xin Zhang , Yanbo Li , Tianhai Chang
IPC分类号： H04B10/032 , H04B10/038
CPC分类号： H04B10/032 , H04B10/038
摘要： 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.

9. 发明授权

US11381335B2 Method and apparatus for spectrum defragmentation, device, and system 有权
公开(公告)号：US11381335B2
公开(公告)日：2022-07-05
申请号：US16716060
申请日：2019-12-16
申请人： Huawei Technologies Co., Ltd.
发明人： Tianhai Chang
IPC分类号： H04J14/02 , H04B10/25 , H04W16/02 , H04W36/00
摘要： 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.

10. 发明公开

US20230388017A1 OPTICAL COUPLER, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM 审中-公开
公开(公告)号：US20230388017A1
公开(公告)日：2023-11-30
申请号：US18446611
申请日：2023-08-09
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Yuanda Huang , Xin Zhang , Tianhai Chang
IPC分类号： H04B10/291 , G02B6/28
CPC分类号： H04B10/291 , G02B6/2804
摘要： An optical coupler, a communication method, and a communication system are provided. The communication system includes N transmitters, M receivers, and an optical coupler, where both N and M are positive integers greater than 1. Each of the N transmitters is configured to send one first optical signal to the optical coupler. The optical coupler is configured to couple N first optical signals sent by the N transmitters into one second optical signal and to broadcast the second optical signal to the M receivers. Each of the M receivers is configured to receive the second optical signal sent by the optical coupler and to demodulate the second optical signal.

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