Tianhai Chang

Person

Dongguan, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Multi-focal-plane image generation apparatus, head-up display appar...
- Patent number 12,055,712
- Issue date Aug 6, 2024
- Huawei Technologies Co., Ltd.
- Lei Mao
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Receiver, optical line terminal, and passive optical network system
- Patent number 11,711,152
- Issue date Jul 25, 2023
- Huawei Technologies Co., Ltd.
- Lei Jing
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Service data processing method and device
- Patent number 11,611,816
- Issue date Mar 21, 2023
- Huawei Technologies Co., Ltd.
- Junling Xiang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for spectrum defragmentation, device, and system
- Patent number 11,381,335
- Issue date Jul 5, 2022
- Huawei Technologies Co., Ltd.
- Tianhai Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier apparatus, optical communications station, and op...
- Patent number 10,911,137
- Issue date Feb 2, 2021
- Huawei Technologies Co., Ltd.
- Enbo Zhou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Network protection method, network node and system
- Patent number 10,778,570
- Issue date Sep 15, 2020
- Huawei Technologies Co., Ltd.
- Jun Yan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber status detection method, optical supervisory unit, an...
- Patent number 10,547,378
- Issue date Jan 28, 2020
- Huawei Technologies Co., Ltd.
- Tianhai Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Service switching system and service switching method
- Patent number 10,200,771
- Issue date Feb 5, 2019
- Huawei Technologies Co., Ltd.
- Buyun Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and device for time synchronization
- Patent number 8,817,823
- Issue date Aug 26, 2014
- Huawei Technologies Co., Ltd.
- Xinyu Shen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Upgrading method, system and apparatus of low-density wavelength di...
- Patent number 8,380,070
- Issue date Feb 19, 2013
- Huawei Technologies Co., Ltd.
- Congqi Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method, apparatus and system for optical communications
- Patent number 7,580,635
- Issue date Aug 25, 2009
- Huawei Technologies Co., Ltd.
- Weishi Li
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission module with digital adjustment and the adjusti...
- Patent number 7,564,881
- Issue date Jul 21, 2009
- Huawei Technologies Co., Ltd.
- Tianhai Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL DISTRIBUTION NETWORK APPARATUS AND SIGNAL PROCESSING METHOD
- Publication number 20240414460
- Publication date Dec 12, 2024
- Huawei Technologies Co., Ltd
- Zhicheng Ye
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM, TRANSMITTER, AND COMMUNICATION METHOD
- Publication number 20240236531
- Publication date Jul 11, 2024
- Huawei Technologies Co., Ltd
- Zeshan Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL COMMUNICATION SYSTEM, VEHICLE, AND INDUSTRIAL OPTICAL NETWORK
- Publication number 20240171270
- Publication date May 23, 2024
- Huawei Technologies Co., Ltd
- Xin Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM, TRANSMITTER, AND COMMUNICATION METHOD
- Publication number 20240137675
- Publication date Apr 25, 2024
- Huawei Technologies Co., Ltd
- Zeshan Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL COUPLER, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM
- Publication number 20230388017
- Publication date Nov 30, 2023
- Huawei Technologies Co., Ltd
- Yuanda Huang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND OPTICAL MODULATION METHOD
- Publication number 20230138252
- Publication date May 4, 2023
- HUAWEI TECHNOLOGIES CO., LTD.
- Guangcan MI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DISPLAY APPARATUS AND DISPLAY SYSTEM
- Publication number 20230072734
- Publication date Mar 9, 2023
- Huawei Technologies Co., Ltd
- Yunfei YAN
- B60 - VEHICLES IN GENERAL
Information Patent Application
MULTI-FOCAL-PLANE IMAGE GENERATION APPARATUS, HEAD-UP DISPLAY APPAR...
- Publication number 20230073664
- Publication date Mar 9, 2023
- Huawei Technologies Co., Ltd
- Lei MAO
- B60 - VEHICLES IN GENERAL
Information Patent Application
Head-Up Display Apparatus and Head-Up Display Method
- Publication number 20230063712
- Publication date Mar 2, 2023
- Huawei Technologies Co., Ltd
- Xiao Li
- G02 - OPTICS
Information Patent Application
RECEIVER, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM
- Publication number 20220239381
- Publication date Jul 28, 2022
- Huawei Technologies Co., Ltd
- Lei JING
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SERVICE DATA PROCESSING METHOD AND DEVICE
- Publication number 20210289273
- Publication date Sep 16, 2021
- Huawei Technologies Co., Ltd
- Junling XIANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and Apparatus for Spectrum Defragmentation, Device, and System
- Publication number 20200186273
- Publication date Jun 11, 2020
- Huawei Technologies Co., Ltd
- Tianhai Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical Amplifier Apparatus, Optical Communications Station, and Op...
- Publication number 20200145098
- Publication date May 7, 2020
- Huawei Technologies Co., Ltd
- Enbo Zhou
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL FIBER STATUS DETECTION METHOD, OPTICAL SUPERVISORY UNIT, AN...
- Publication number 20180123687
- Publication date May 3, 2018
- Huawei Technologies Co., Ltd
- Tianhai CHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Network Protection Method, Network Node and System
- Publication number 20180109445
- Publication date Apr 19, 2018
- Huawei Technologies Co., Ltd
- Jun Yan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Service Switching System and Service Switching Method
- Publication number 20170359638
- Publication date Dec 14, 2017
- Huawei Technologies Co., Ltd
- Buyun Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND DEVICE FOR TIME SYNCHRONIZATION
- Publication number 20130121352
- Publication date May 16, 2013
- Huawei Technologies Co., Ltd
- Xinyu SHEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
UPGRADING METHOD, SYSTEM AND APPARATUS OF LOW-DENSITY WAVELENGTH DI...
- Publication number 20100142960
- Publication date Jun 10, 2010
- Huawei Technologies Co., Ltd
- Congqi LI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method, apparatus and system for optical communications
- Publication number 20070031148
- Publication date Feb 8, 2007
- Huawei Technologies Co., Ltd.
- Weishi Ll
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission module with digital adjustment and the adjusti...
- Publication number 20040264518
- Publication date Dec 30, 2004
- Tianhai Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tianhai Chang

Person

Patents Grantslast 30 patents

Multi-focal-plane image generation apparatus, head-up display appar...

Receiver, optical line terminal, and passive optical network system

Service data processing method and device

Method and apparatus for spectrum defragmentation, device, and system

Optical amplifier apparatus, optical communications station, and op...

Network protection method, network node and system

Optical fiber status detection method, optical supervisory unit, an...

Service switching system and service switching method

Method and device for time synchronization

Upgrading method, system and apparatus of low-density wavelength di...

Method, apparatus and system for optical communications

Optical transmission module with digital adjustment and the adjusti...

Patents Applicationslast 30 patents

OPTICAL DISTRIBUTION NETWORK APPARATUS AND SIGNAL PROCESSING METHOD

COMMUNICATION SYSTEM, TRANSMITTER, AND COMMUNICATION METHOD

OPTICAL COMMUNICATION SYSTEM, VEHICLE, AND INDUSTRIAL OPTICAL NETWORK

COMMUNICATION SYSTEM, TRANSMITTER, AND COMMUNICATION METHOD

OPTICAL COUPLER, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM

OPTICAL TRANSMITTER AND OPTICAL MODULATION METHOD

DISPLAY APPARATUS AND DISPLAY SYSTEM

MULTI-FOCAL-PLANE IMAGE GENERATION APPARATUS, HEAD-UP DISPLAY APPAR...

Head-Up Display Apparatus and Head-Up Display Method

RECEIVER, OPTICAL LINE TERMINAL, AND PASSIVE OPTICAL NETWORK SYSTEM

SERVICE DATA PROCESSING METHOD AND DEVICE

Method and Apparatus for Spectrum Defragmentation, Device, and System

Optical Amplifier Apparatus, Optical Communications Station, and Op...

OPTICAL FIBER STATUS DETECTION METHOD, OPTICAL SUPERVISORY UNIT, AN...

Network Protection Method, Network Node and System

Service Switching System and Service Switching Method

METHOD AND DEVICE FOR TIME SYNCHRONIZATION

UPGRADING METHOD, SYSTEM AND APPARATUS OF LOW-DENSITY WAVELENGTH DI...

Method, apparatus and system for optical communications

Optical transmission module with digital adjustment and the adjusti...