Junqiang Hu

Person

Davis, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Physimetric-based data security for coded distributed temperature s...
- Patent number 12,256,002
- Issue date Mar 18, 2025
- NEC Corporation
- Qiang Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reduced complexity polarization combining method for coherent DAS
- Patent number 12,078,526
- Issue date Sep 3, 2024
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Two stage processing distributed fiber optic sensing (DFOS) interro...
- Patent number 12,025,488
- Issue date Jul 2, 2024
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Active microphone for increased DAS acoustic sensing capability
- Patent number 11,736,867
- Issue date Aug 22, 2023
- NEC Corporation
- Junqiang Hu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Spatial averaging method for coherent distributed acoustic sensing
- Patent number 11,733,088
- Issue date Aug 22, 2023
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Method providing increased signal-to-noise (SNR) for coherent distr...
- Patent number 11,698,289
- Issue date Jul 11, 2023
- NEC Corporation
- Junqiang Nochur Hu
- G01 - MEASURING TESTING
Information Patent Grant
Polarization diversity combining method in coherent DAS maintaining...
- Patent number 11,692,867
- Issue date Jul 4, 2023
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Saturation caused phase jump avoidance in DAS
- Patent number 11,674,827
- Issue date Jun 13, 2023
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Suppressed out-of-band level for increasing loss margin and stable...
- Patent number 11,664,893
- Issue date May 30, 2023
- NEC Corporation
- Yue-Kai Huang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rayleigh fading mitigation via short pulse coherent distributed aco...
- Patent number 11,566,937
- Issue date Jan 31, 2023
- NEC Corporation
- Ezra Ip
- G01 - MEASURING TESTING
Information Patent Grant
Distributed optical fiber sensing using point sensors
- Patent number 11,543,285
- Issue date Jan 3, 2023
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber sensing system with reduced spatial resolution and no...
- Patent number 11,391,622
- Issue date Jul 19, 2022
- NEC Corporation
- Ezra Ip
- G01 - MEASURING TESTING
Information Patent Grant
Efficient transfer of sensor data on dynamic software defined netwo...
- Patent number 11,387,926
- Issue date Jul 12, 2022
- NEC Corporation
- Ting Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Two stage detection method for distributed vibration detection
- Patent number 11,131,578
- Issue date Sep 28, 2021
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Uni-directional signal transmit method using distributed fiber sensing
- Patent number 11,054,303
- Issue date Jul 6, 2021
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Distributed fiber sensing interrogator with detachable end
- Patent number 10,797,789
- Issue date Oct 6, 2020
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Networked systems for monitoring fire extinguisher operational read...
- Patent number 10,010,733
- Issue date Jul 3, 2018
- NEC Corporation
- Junqiang Hu
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Apparatus, methods, and systems for monitoring fire extinguisher op...
- Patent number 10,010,732
- Issue date Jul 3, 2018
- NEC Corporation
- Junqiang Hu
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Mechanism for remote safety monitoring sensor with low-power consum...
- Patent number 9,807,476
- Issue date Oct 31, 2017
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Scalable hybrid packet/circuit switching network architecture
- Patent number 9,654,852
- Issue date May 16, 2017
- NEC Corporation
- Yawei Yin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reconfigurable and variable-rate shared multi-transponder architect...
- Patent number 9,609,400
- Issue date Mar 28, 2017
- NEC Corporation
- Konstantinos Kanonakis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reference signal generation for lock-in amplifier in high sensitivi...
- Patent number 9,599,556
- Issue date Mar 21, 2017
- NEC Corporation
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Grant
Receiver bit alignment for multi-lane asynchronous high-speed data...
- Patent number 9,569,296
- Issue date Feb 14, 2017
- NEC Corporation
- Junqiang Hu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Burst switching system using optical cross-connect as switch fabric
- Patent number 9,544,667
- Issue date Jan 10, 2017
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adding link aggregation group to hitless protection in packet switc...
- Patent number 9,537,757
- Issue date Jan 3, 2017
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hitless service in a variable rate optical transponder
- Patent number 9,479,446
- Issue date Oct 25, 2016
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical network switching using N:N transponder through time-domain...
- Patent number 9,455,795
- Issue date Sep 27, 2016
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encoding method and system for quasi-cyclic low-density parity-chec...
- Patent number 9,450,612
- Issue date Sep 20, 2016
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Flexible-client, flexible-line interface transponder
- Patent number 9,414,135
- Issue date Aug 9, 2016
- NEC Corporation
- Ankitkumar Patel
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Elastic client interface for tunable optical transponder
- Patent number 9,369,202
- Issue date Jun 14, 2016
- NEC Corporation
- Junqiang Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
CASCADED DFOS TO REDUCE SYSTEM COST AND INCREASE SENSING REACH
- Publication number 20250123127
- Publication date Apr 17, 2025
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
AUTOMATIC CALIBRATION FOR BACKSCATTERING-BASED DISTRIBUTED TEMPERAT...
- Publication number 20240302225
- Publication date Sep 12, 2024
- NEC Laboratories America, Inc.
- Philip JI
- G01 - MEASURING TESTING
Information Patent Application
LASER FREQUENCY DRIFT COMPENSATION IN FORWARD DISTRIBUTED ACOUSTIC...
- Publication number 20240247974
- Publication date Jul 25, 2024
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
FAST OPTICAL CABLE IDENTIFICATION USING ACOUSTIC PEN
- Publication number 20240235668
- Publication date Jul 11, 2024
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
MULTI-BAND DAS WITH ENHANCED SNR, INCREASED SAMPLING RATE AND MINIM...
- Publication number 20230375398
- Publication date Nov 23, 2023
- NEC Laboratories America, Inc.
- Junqiang HU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TWO STAGE PROCESSING DISTRIBUTED FIBER OPTIC SENSING (DFOS) INTERRO...
- Publication number 20230228617
- Publication date Jul 20, 2023
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
AUTOMATIC FIBER END POINT DETECTION USING COHERENT OPTICAL TIME DOM...
- Publication number 20230152152
- Publication date May 18, 2023
- NEC Laboratories America, Inc.
- Philip JI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SUPPRESSED OUT-OF-BAND LEVEL FOR INCREASING LOSS MARGIN AND STABLE...
- Publication number 20220321214
- Publication date Oct 6, 2022
- NEC Laboratories America, Inc.
- Yue-Kai HUANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ACTIVE MICROPHONE FOR INCREASED DAS ACOUSTIC SENSING CAPABILITY
- Publication number 20220279287
- Publication date Sep 1, 2022
- NEC Laboratories America, Inc.
- Junqiang Hu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PHYSIMETRIC-BASED DATA SECURITY FOR CODED DISTRIBUTED TEMPERATURE S...
- Publication number 20220247562
- Publication date Aug 4, 2022
- NEC Laboratories America, Inc.
- Qiang WANG
- G01 - MEASURING TESTING
Information Patent Application
Method Providing Increased Signal-To-Noise (SNR) for Coherent Distr...
- Publication number 20220196461
- Publication date Jun 23, 2022
- NEC Laboratories America, Inc.
- Junqiang Nochur HU
- G01 - MEASURING TESTING
Information Patent Application
SPATIAL AVERAGING METHOD FOR COHERENT DISTRIBUTED ACOUSTIC SENSING
- Publication number 20220187121
- Publication date Jun 16, 2022
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
REDUCED COMPLEXITY POLARIZATION COMBINING METHOD FOR COHERENT DAS
- Publication number 20220146304
- Publication date May 12, 2022
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
SATURATION CAUSED PHASE JUMP AVOIDANCE IN DAS
- Publication number 20220128384
- Publication date Apr 28, 2022
- NEC Laboratories America, Inc.
- Junqiang HU
- G01 - MEASURING TESTING
Information Patent Application
POLARIZATION DIVERSITY COMBINING METHOD IN COHERENT DAS MAINTAINING...
- Publication number 20220120608
- Publication date Apr 21, 2022
- NEC Laboratories America, Inc.
- Junqiang HU
- G02 - OPTICS
Information Patent Application
COMPLEX AND PHASE DOMAIN VIBRATION STRENGTH ESTIMATION FOR COHERENT...
- Publication number 20210356317
- Publication date Nov 18, 2021
- NEC Laboratories America, Inc.
- Ezra IP
- G01 - MEASURING TESTING
Information Patent Application
TWO STAGE PROCESSING DISTRIBUTED FIBER OPTIC SENSING (DFOS) INTERRO...
- Publication number 20210318162
- Publication date Oct 14, 2021
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
DISTRIBUTED OPTICAL FIBER SENSING USING POINT SENSORS
- Publication number 20210255007
- Publication date Aug 19, 2021
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
EFFICIENT TRANSFER OF SENSOR DATA ON DYNAMIC SOFTWARE DEFINED NETWO...
- Publication number 20210123798
- Publication date Apr 29, 2021
- NEC Laboratories America, Inc.
- Ting Wang
- G01 - MEASURING TESTING
Information Patent Application
RAYLEIGH FADING MITIGATION VIA SHORT PULSE COHERENT DISTRIBUTED ACO...
- Publication number 20200370950
- Publication date Nov 26, 2020
- NEC Laboratories America, Inc.
- Ezra IP
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL FIBER SENSING SYSTEMS, METHODS, STRUCTURES AND APPLICATION
- Publication number 20200249076
- Publication date Aug 6, 2020
- NEC Laboratories America, Inc.
- Ezra IP
- G01 - MEASURING TESTING
Information Patent Application
UNI-DIRECTIONAL SIGNAL TRANSMIT METHOD USING DISTRIBUTED FIBER SENSING
- Publication number 20200249078
- Publication date Aug 6, 2020
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
DISTRIBUTED FIBER SENSING INTERROGATOR WITH DETACHABLE END
- Publication number 20200007228
- Publication date Jan 2, 2020
- NEC Laboratories America, Inc.
- JUNQIANG HU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TWO STAGE DETECTION METHOD FOR DISTRIBUTED VIBRATION DETECTION
- Publication number 20200003612
- Publication date Jan 2, 2020
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
APPARATUS, METHODS, AND SYSTEMS FOR MONITORING FIRE EXTINGUISHER OP...
- Publication number 20170209725
- Publication date Jul 27, 2017
- NEC Laboratories America, Inc.
- Junqiang HU
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
Indoor Positioning System with Fast Plan Mapping
- Publication number 20170211937
- Publication date Jul 27, 2017
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
NETWORKED SYSTEMS FOR MONITORING FIRE EXTINGUISHER OPERATIONAL READ...
- Publication number 20170209726
- Publication date Jul 27, 2017
- NEC Laboratories America, Inc.
- Junqiang HU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Reference Signal Generation for Lock-In Amplifier in High Sensitivi...
- Publication number 20160301367
- Publication date Oct 13, 2016
- NEC Laboratories America, Inc.
- Junqiang Hu
- G01 - MEASURING TESTING
Information Patent Application
Mechanism for Remote Safety Monitoring Sensor with Low-Power Consum...
- Publication number 20160301993
- Publication date Oct 13, 2016
- NEC Laboratories America, Inc.
- JUNQIANG HU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SCALABLE HYBRID PACKET/CIRCUIT SWITCHING NETWORK ARCHITECTURE
- Publication number 20150181317
- Publication date Jun 25, 2015
- NEC Laboratories America, Inc.
- Yawei Yin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Junqiang Hu

Person

Patents Grantslast 30 patents

Physimetric-based data security for coded distributed temperature s...

Reduced complexity polarization combining method for coherent DAS

Two stage processing distributed fiber optic sensing (DFOS) interro...

Active microphone for increased DAS acoustic sensing capability

Spatial averaging method for coherent distributed acoustic sensing

Method providing increased signal-to-noise (SNR) for coherent distr...

Polarization diversity combining method in coherent DAS maintaining...

Saturation caused phase jump avoidance in DAS

Suppressed out-of-band level for increasing loss margin and stable...

Rayleigh fading mitigation via short pulse coherent distributed aco...

Distributed optical fiber sensing using point sensors

Optical fiber sensing system with reduced spatial resolution and no...

Efficient transfer of sensor data on dynamic software defined netwo...

Two stage detection method for distributed vibration detection

Uni-directional signal transmit method using distributed fiber sensing

Distributed fiber sensing interrogator with detachable end

Networked systems for monitoring fire extinguisher operational read...

Apparatus, methods, and systems for monitoring fire extinguisher op...

Mechanism for remote safety monitoring sensor with low-power consum...

Scalable hybrid packet/circuit switching network architecture

Reconfigurable and variable-rate shared multi-transponder architect...

Reference signal generation for lock-in amplifier in high sensitivi...

Receiver bit alignment for multi-lane asynchronous high-speed data...

Burst switching system using optical cross-connect as switch fabric

Adding link aggregation group to hitless protection in packet switc...

Hitless service in a variable rate optical transponder

Optical network switching using N:N transponder through time-domain...

Encoding method and system for quasi-cyclic low-density parity-chec...

Flexible-client, flexible-line interface transponder

Elastic client interface for tunable optical transponder

Patents Applicationslast 30 patents

CASCADED DFOS TO REDUCE SYSTEM COST AND INCREASE SENSING REACH

AUTOMATIC CALIBRATION FOR BACKSCATTERING-BASED DISTRIBUTED TEMPERAT...

LASER FREQUENCY DRIFT COMPENSATION IN FORWARD DISTRIBUTED ACOUSTIC...

FAST OPTICAL CABLE IDENTIFICATION USING ACOUSTIC PEN

MULTI-BAND DAS WITH ENHANCED SNR, INCREASED SAMPLING RATE AND MINIM...

TWO STAGE PROCESSING DISTRIBUTED FIBER OPTIC SENSING (DFOS) INTERRO...

AUTOMATIC FIBER END POINT DETECTION USING COHERENT OPTICAL TIME DOM...

SUPPRESSED OUT-OF-BAND LEVEL FOR INCREASING LOSS MARGIN AND STABLE...

ACTIVE MICROPHONE FOR INCREASED DAS ACOUSTIC SENSING CAPABILITY

PHYSIMETRIC-BASED DATA SECURITY FOR CODED DISTRIBUTED TEMPERATURE S...

Method Providing Increased Signal-To-Noise (SNR) for Coherent Distr...

SPATIAL AVERAGING METHOD FOR COHERENT DISTRIBUTED ACOUSTIC SENSING

REDUCED COMPLEXITY POLARIZATION COMBINING METHOD FOR COHERENT DAS

SATURATION CAUSED PHASE JUMP AVOIDANCE IN DAS

POLARIZATION DIVERSITY COMBINING METHOD IN COHERENT DAS MAINTAINING...

COMPLEX AND PHASE DOMAIN VIBRATION STRENGTH ESTIMATION FOR COHERENT...

TWO STAGE PROCESSING DISTRIBUTED FIBER OPTIC SENSING (DFOS) INTERRO...

DISTRIBUTED OPTICAL FIBER SENSING USING POINT SENSORS

EFFICIENT TRANSFER OF SENSOR DATA ON DYNAMIC SOFTWARE DEFINED NETWO...

RAYLEIGH FADING MITIGATION VIA SHORT PULSE COHERENT DISTRIBUTED ACO...

OPTICAL FIBER SENSING SYSTEMS, METHODS, STRUCTURES AND APPLICATION

UNI-DIRECTIONAL SIGNAL TRANSMIT METHOD USING DISTRIBUTED FIBER SENSING

DISTRIBUTED FIBER SENSING INTERROGATOR WITH DETACHABLE END

TWO STAGE DETECTION METHOD FOR DISTRIBUTED VIBRATION DETECTION

APPARATUS, METHODS, AND SYSTEMS FOR MONITORING FIRE EXTINGUISHER OP...

Indoor Positioning System with Fast Plan Mapping

NETWORKED SYSTEMS FOR MONITORING FIRE EXTINGUISHER OPERATIONAL READ...

Reference Signal Generation for Lock-In Amplifier in High Sensitivi...

Mechanism for Remote Safety Monitoring Sensor with Low-Power Consum...

SCALABLE HYBRID PACKET/CIRCUIT SWITCHING NETWORK ARCHITECTURE