LexDanaLexDanabeta
Inventor

Zhenning Tao

Inventor
Beijing, CN

Overview

102→
Patents
2010–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 102 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Bprimary
H04BTransmission54%
H04LTransmission of digital information, e.g. telegraphic communication30%
H04JMultiplex communication9%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%
H03DDemodulation or transference of modulation from one carrier to another1%
H03FAmplifiers1%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light1%
G01RMeasuring electric variables1%
G06FElectric digital data processing1%
H04QSelecting1%
PatentTitleYear
10,771,230Estimating apparatus for bias drift of transmitting end modulator, compensating apparatus and receiver202010,739,388Harmonic distortion separation method, nonlinear character determination method and apparatus and system202010,742,316Apparatus and method for monitoring change of polarization state resulted from optical link and optical receiver202010,734,950Phase noise compensation apparatus and method and receiver202010,644,791Impairment monitoring apparatus, impairment monitoring and compensating system and method202010,630,526Estimation apparatus for IQ imbalance of optical transmitter, compensation apparatus for IQ imbalance of optical transmitter and electronic equipment202010,623,128Apparatus and method for processing a frequency offset of a pilot and receiver202010,601,504Method and apparatus for monitoring polarization dependent loss, receiver and communication system202010,560,195Bias control apparatus and method of modulator of optical transmitter and optical transmitter202010,547,381Apparatus and method for monitoring optical signal to noise ratio, receiver and communication system202010,491,294Signal processing apparatus, apparatus and method for monitoring channel spacing and system201910,491,526Transmission control method and apparatus for network services and controller201910,454,638Bit allocation method, apparatus for multicarrier modulation signal, and system201910,439,852Signal processing apparatus, signal transmitting apparatus and receiver201910,404,380Compensation apparatus for offset drift, received signal recovery apparatus and receiver201910,367,635Signal transmission apparatus, carrier phase recovery apparatus and method201910,345,673Bias control apparatus and method of modulator of optical transmitter and optical transmitter201910,313,007System performance prediction method and apparatus201910,313,008Measurement method and apparatus for residual direct-current components and a system201910,305,591Detection apparatus and method for noise intensity and coherent optical receiver201910,263,698Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiver201910,243,725Apparatus and method for generating transmitting sequence, training sequence synchronization apparatus and method, apparatus and method for estimating channel spacing and system201910,230,469Apparatus for measuring a filtering characteristic, pre-equalizer and optical communication equipment201910,230,463Transmission device and method for measuring optical transmission characteristics201910,225,010Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment201910,225,007Measuring apparatus and method of frequency response characteristic imbalance of optical receiver201910,181,907Method and apparatus for estimating polarization dependent loss and receiving device201910,177,844Measurement method and apparatus for a residual direct-current component and system201910,171,162Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiver201910,116,388Apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment201810,009,096Method for estimating frequency offset, apparatus and system20189,998,223Calculating apparatus and method for nonlinear weighting coefficient20189,985,801Apparatus and method for estimating a frequency offset, apparatus and method for estimating a channel spacing and system20189,979,471Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipment20189,973,272Method and apparatus for monitoring in-line signal quality and system20189,960,863Estimation apparatus and method for a nonlinear characteristic20189,882,636'Monitoring apparatus for an optical signal to noise ratio, signal transmission apparatus and receiver'20189,871,581'Monitoring apparatus and method for an optical signal-to-noise ratio and receiver'20189,859,977'Method for estimating channel power, method for monitoring frequency spectrum characteristic, apparatus and system'20189,853,767Method and apparatus for determining nonlinear characteristic and system20179,832,083Apparatus and method for detecting channel spacing and system20179,825,699'Method and apparatus for correcting inter-channel power imbalance and receiver'20179,825,708'Compensation apparatus and method for inter-channel nonlinear damage'20179,806,922'Apparatus for estimating channel spacing, apparatus for monitoring wavelength, and receiver'20179,780,812'Information transmission apparatus, information detection apparatus and transmitter'20179,774,399'Nonlinear compensation method and apparatus and system in multicarrier optical communication system'20179,749,166'Estimation apparatus and compensation apparatus for clipping distortion of multicarrier signals and receiver'20179,698,904'Apparatus for monitoring optical signal to noise ratio, transmitter and communication system'20179,654,211'Estimation apparatus and method for nonlinear distortion and receiver'20179,646,116'Nonlinear term selection apparatus and method, identification system and compensation system'20179,490,901'Bias monitoring method and apparatus and transmitter'20169,450,675'Method and apparatus for estimating cross-phase modulation impairments'20169,300,401'Updating apparatus and method for equalizer coefficient, receiver and otpical communication system'20169,264,214'Phase detection method and apparatus for clock recovery'20169,258,077'Butterfly filter coefficient setting method and device, receiver and receiving method'20169,258,166'Timing synchronization apparatus and method for multi-carrier modulation signals'20169,258,060'Method and apparatus for compensating nonlinear distortions in intensity modulation-direct detection system'20169,219,622'Method and apparatus for compensating nonlinear damage'20159,209,899'Method and apparatus for adaptive nonlinear equalization in a polarization multiplexing optical communication system'20159,160,448'Apparatus and method for estimating intra-channel nonlinear damage'20159,143,240'Nonlinear compensating apparatus and method and transmitter'20159,106,339'Coefficient determining apparatus, equalizer, receiver and transmitter'20158,995,835'Inverse channel apparatus and transmitter, receiver and system containing the apparatus'20158,989,324'Receiver and receiving method'20158,977,119'Automatic bias control method and apparatus for optical transmitter'20158,935,115'Method and apparatus for compensating nonlinear damage'20158,891,684'Nonlinear estimating apparatus and method and receiver'20148,891,669'Nonlinear compensating apparatus and method and transmitter'20148,886,056'Apparatus for self-phase modulation noise calculation, apparatus for self-phase modulation noise elimination and optical coherent receiver'20148,849,131'Polarization scattering compensation device and polarization scattering compensation method'20148,798,477'Chromatic dispersion monitor and method, chromatic dispersion compensator'20148,787,437'Adaptive equalizer and method thereof'20148,774,313'Nonlinear compensating apparatus and transmitter'20148,762,086'Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the same'20148,761,613'External modulator monitoring device and external modulator monitoring method'20148,750,443'Phase error estimator, coherent receiver and phase error estimating method'20148,725,003'External modulator monitoring device and external modulator monitoring method'20148,693,892'External modulator monitoring device and external modulator monitoring method'20148,687,646'Method and apparatus for bit and power allocation, and communication system'20148,675,470'Crosstalk coefficient estimating apparatus and crosstalk coefficient estimating method'20148,666,262'Method for adaptive blind equalization of PSK signal, equalizer and receiver'20148,654,826'Multi-stage phase estimation method and apparatus'20148,655,195'Average length magnitude detecting apparatus, and method'20148,571,407'Optical coherent receiver, apparatus for and method of monitoring performance thereof'20138,566,073'Simulation device and simulation method'20138,532,502'Filter coefficient adjustment apparatus'20138,521,498'Simulation device and simulation method'20138,514,922'Filter coefficient control apparatus and method'20138,472,814'Apparatus and method for equalizing chromatic dispersion and digital coherent optical receiver'20138,452,192'Apparatus and method for monitoring statistical characteristics of phase noises, and coherent optical communication receiver'20138,442,406'Filter, coherent receiver device and coherent receiving method'20138,374,512'Frequency offset monitoring device and optical coherent receiver'20138,331,496'Phase recovery device, phase recovery method and receiver for 16 QAM data modulation'20128,189,718'Adaptive optimization method and apparatus for average length'20128,103,177'Apparatus and method for frequency offset monitoring used in digital coherent optical receiver'20128,103,176'Frequency offset compensating apparatus and method, and optical coherent receiver'20128,086,114'Filter coefficient changing apparatus and method'20118,078,066'Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiver'20117,970,290'Digital phase estimator, digital phase locked loop and optical coherent receiver'20117,953,328'Optical DQPSK transmitter phase monitor and control'20117,877,025'Phase monitor apparatus, phase control apparatus and methods thereof for optical DQPSK receiver'20117,676,162'Phase monitor used in optical receiver'2010

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2010–2020Patents assigned to FUJITSU LTD (99)· patent assignee history
2010–2020Based in Beijing, CN· patent location history
2011–2015Patents assigned to TAO ZHENNING (29)· patent assignee history
2011–2014Patents assigned to LI LEI (12)· patent assignee history
2012–2014Patents assigned to ODA SHOICHIRO (8)· patent assignee history
2012–2014Patents assigned to ZHANG HUIJIAN (8)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD992010–2020
TAO ZHENNINGself292011–2015
LI LEI122011–2014
ODA SHOICHIRO82012–2014
ZHANG HUIJIAN82012–2014
Locations
LocationPatentsSpan
Beijing, CN1022010–2020