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Patents Grants
last 30 patents
Information
Patent Grant
Method and apparatus for generating equivalent nonlinear noise
Patent number
12,126,395
Issue date
Oct 22, 2024
Fujitsu Limited
Ke Zhang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Distorter coefficient updating apparatus, method and digital predis...
Patent number
11,901,951
Issue date
Feb 13, 2024
Fujitsu Limited
Ke Zhang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for measuring nonlinear signal-to-noise ratio,...
Patent number
11,881,906
Issue date
Jan 23, 2024
Fujitsu Limited
Xiaofei Su
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization change tracking apparatus, processing apparatus for re...
Patent number
11,777,613
Issue date
Oct 3, 2023
Fujitsu Limited
Jingnan Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Performance estimation apparatus and method for nonlinear communica...
Patent number
11,626,928
Issue date
Apr 11, 2023
Fujitsu Limited
Xiaofei Su
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Polarization recovery apparatus and method thereof and optical rece...
Patent number
11,626,930
Issue date
Apr 11, 2023
Fujitsu Limited
Jingnan Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Phase response measurement method and apparatus
Patent number
11,563,496
Issue date
Jan 24, 2023
Fujitsu Limited
Yangyang Fan
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Apparatus and method for monitoring polarization change
Patent number
11,463,172
Issue date
Oct 4, 2022
Fujitsu Limited
Jingnan Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
State of polarization tracking recovery method and apparatus
Patent number
11,329,724
Issue date
May 10, 2022
Fujitsu Limited
Yangyang Fan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for monitoring the change of state of polariza...
Patent number
11,296,797
Issue date
Apr 5, 2022
Fujitsu Limited
Xiaofei Su
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for determining coefficients of fixed equalizer
Patent number
11,108,464
Issue date
Aug 31, 2021
Fujitsu Limited
Yangyang Fan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for establishing transmission impairment decom...
Patent number
11,070,287
Issue date
Jul 20, 2021
Fujitsu Limited
Jingnan Li
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method and apparatus for monitoring modulation depth of dither sign...
Patent number
11,057,106
Issue date
Jul 6, 2021
Fujitsu Limited
Jingnan Li
G02 - OPTICS
Information
Patent Grant
Apparatus and method for monitoring change of polarization state re...
Patent number
10,962,714
Issue date
Mar 30, 2021
Fujitsu Limited
Yanhui Qi
G02 - OPTICS
Information
Patent Grant
Fiber nonlinear noise monitoring method and apparatus and optical r...
Patent number
10,917,171
Issue date
Feb 9, 2021
Fujitsu Limited
Ke Zhang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for estimating polarization skew
Patent number
10,903,911
Issue date
Jan 26, 2021
Fujitsu Limited
Yangyang Fan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Inter-channel linear crosstalk estimation method and apparatus and...
Patent number
10,892,962
Issue date
Jan 12, 2021
Fujitsu Limited
Ke Zhang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Estimating apparatus for bias drift of transmitting end modulator,...
Patent number
10,771,230
Issue date
Sep 8, 2020
Fujitsu Limited
Liang Dou
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for monitoring change of polarization state re...
Patent number
10,742,316
Issue date
Aug 11, 2020
Fujitsu Limited
Tong Ye
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Harmonic distortion separation method, nonlinear character determin...
Patent number
10,739,388
Issue date
Aug 11, 2020
Fujitsu Limited
Hao Chen
G01 - MEASURING TESTING
Information
Patent Grant
Phase noise compensation apparatus and method and receiver
Patent number
10,734,950
Issue date
Aug 4, 2020
Fujitsu Limited
Xiaofei Su
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Impairment monitoring apparatus, impairment monitoring and compensa...
Patent number
10,644,791
Issue date
May 5, 2020
Fujitsu Limited
Junpeng Liang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Estimation apparatus for IQ imbalance of optical transmitter, compe...
Patent number
10,630,526
Issue date
Apr 21, 2020
Fujitsu Limited
Yangyang Fan
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Apparatus and method for processing a frequency offset of a pilot a...
Patent number
10,623,128
Issue date
Apr 14, 2020
Fujitsu Limited
Huihui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for monitoring polarization dependent loss, re...
Patent number
10,601,504
Issue date
Mar 24, 2020
Fujitsu Limited
Huihui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Bias control apparatus and method of modulator of optical transmitt...
Patent number
10,560,195
Issue date
Feb 11, 2020
Fujitsu Limited
Yangyang Fan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Apparatus and method for monitoring optical signal to noise ratio,...
Patent number
10,547,381
Issue date
Jan 28, 2020
Fujitsu Limited
Huihui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal processing apparatus, apparatus and method for monitoring ch...
Patent number
10,491,294
Issue date
Nov 26, 2019
Fujitsu Limited
Huihui Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission control method and apparatus for network services and...
Patent number
10,491,526
Issue date
Nov 26, 2019
Fujitsu Limited
Lei Li
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Bit allocation method, apparatus for multicarrier modulation signal...
Patent number
10,454,638
Issue date
Oct 22, 2019
Fujitsu Limited
Weizhen Yan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAV...
Publication number
20240178853
Publication date
May 30, 2024
Fujitsu Limited
Ke ZHANG
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
METHOD AND APPARATUS FOR EVALUATING TRANSMISSION IMPAIRMENTS OF MUL...
Publication number
20240129049
Publication date
Apr 18, 2024
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SIGNAL TRANSMISSION DEVICE AND METHOD BASED ON DIGITAL PRED...
Publication number
20240056109
Publication date
Feb 15, 2024
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD, APPARATUS AND COMMUNICATION SYSTEM FOR EVALUATING NONLINEAR...
Publication number
20240015054
Publication date
Jan 11, 2024
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATION APPARATUS AND METHOD
Publication number
20230370163
Publication date
Nov 16, 2023
Fujitsu Limited
Jingnan LI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR MEASURING NONLINEAR SYSTEM NOISES
Publication number
20230370168
Publication date
Nov 16, 2023
Fujitsu Limited
Jingnan LI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
MEASUREMENT APPARATUS AND METHOD FOR NONLINEAR DAMAGES IN OPTICAL LINK
Publication number
20230327759
Publication date
Oct 12, 2023
Fujitsu Limited
Yangyang FAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD, APPARATUS AND SYSTEM FOR MEASURING NONLINEAR RELATED PARAME...
Publication number
20230266370
Publication date
Aug 24, 2023
Fujitsu Limited
Tong YE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD, APPARATUS AND SYSTEM FOR MEASURING NONLINEAR CORRELATION PA...
Publication number
20230261765
Publication date
Aug 17, 2023
Fujitsu Limited
Tong YE
G01 - MEASURING TESTING
Information
Patent Application
METHOD AND APPARATUS FOR GENERATING EQUIVALENT NONLINEAR NOISE
Publication number
20230082707
Publication date
Mar 16, 2023
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR GENERATING SIGNAL
Publication number
20230083930
Publication date
Mar 16, 2023
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR MEASURING NONLINEAR SIGNAL-TO-NOISE RATIO,...
Publication number
20230084994
Publication date
Mar 16, 2023
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DISTORTER COEFFICIENT UPDATING APPARATUS, METHOD AND DIGITAL PREDIS...
Publication number
20230010592
Publication date
Jan 12, 2023
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD FOR UPDATING NON-LINEAR LOOK-UP TABLE, APPARATUS FOR UPDATIN...
Publication number
20230008430
Publication date
Jan 12, 2023
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATION DEVICE AND EQUALIZATION PROCESSING DEVICE
Publication number
20220385421
Publication date
Dec 1, 2022
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
POLARIZATION CHANGE TRACKING APPARATUS, PROCESSING APPARATUS FOR RE...
Publication number
20220255631
Publication date
Aug 11, 2022
Fujitsu Limited
Jingnan LI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
POLARIZATION RECOVERY APPARATUS AND METHOD THEREOF AND OPTICAL RECE...
Publication number
20220255630
Publication date
Aug 11, 2022
Fujitsu Limited
Jingnan LI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PERFORMANCE ESTIMATION APPARATUS AND METHOD FOR NONLINEAR COMMUNICA...
Publication number
20220166520
Publication date
May 26, 2022
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR MONITORING POLARIZATION CHANGE
Publication number
20220149941
Publication date
May 12, 2022
Fujitsu Limited
Jingnan LI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHASE RESPONSE MEASUREMENT METHOD AND APPARATUS
Publication number
20220140912
Publication date
May 5, 2022
Fujitsu Limited
Yangyang FAN
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
STATE OF POLARIZATION TRACKING RECOVERY METHOD AND APPARATUS
Publication number
20210399803
Publication date
Dec 23, 2021
Fujitsu Limited
Yangyang FAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR DETERMINING COEFFICIENTS OF FIXED EQUALIZER
Publication number
20210126710
Publication date
Apr 29, 2021
Fujitsu Limited
Yangyang FAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS FOR MONITORING MODULATION DEPTH OF DITHER SIGN...
Publication number
20210119699
Publication date
Apr 22, 2021
Fujitsu Limited
Jingnan LI
G02 - OPTICS
Information
Patent Application
METHOD AND APPARATUS FOR ESTABLISHING TRANSMISSION IMPAIRMENT DECOM...
Publication number
20210111789
Publication date
Apr 15, 2021
Fujitsu Limited
Jingnan LI
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD AND APPARATUS FOR MONITORING THE CHANGE OF STATE OF POLARIZA...
Publication number
20200295843
Publication date
Sep 17, 2020
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR MONITORING CHANGE OF POLARIZATION STATE RE...
Publication number
20200264368
Publication date
Aug 20, 2020
Fujitsu Limited
Yanhui QI
G02 - OPTICS
Information
Patent Application
APPARATUS AND METHOD FOR ESTIMATING POLARIZATION SKEW
Publication number
20200266901
Publication date
Aug 20, 2020
Fujitsu Limited
Yangyang FAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FIBER NONLINEAR NOISE MONITORING METHOD AND APPARATUS AND OPTICAL R...
Publication number
20200106523
Publication date
Apr 2, 2020
Fujitsu Limited
Ke ZHANG
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
APPARATUS AND METHOD FOR MONITORING CHANGE OF POLARIZATION STATE RE...
Publication number
20200106521
Publication date
Apr 2, 2020
Fujitsu Limited
Tong YE
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
PHASE NOISE COMPENSATION APPARATUS AND METHOD AND RECEIVER
Publication number
20190348950
Publication date
Nov 14, 2019
Fujitsu Limited
Xiaofei SU
H04 - ELECTRIC COMMUNICATION TECHNIQUE