Inventor · disambiguated record
Zhenning Tao
Also filed as: TAO ZHENNING
121 granted patents·13 pending applications·232 citations·filing 2006–2025
99Inventor score
Top patents by PatentIndex Score
134 records- 0196US9859977B2Method for estimating channel power, method for monitoring frequency spectrum characteristic, apparatus and systemFUJITSU LTD·Filed 2016·Granted Jan 2, 2018·24 cites·19 claims
- 0291US8472814B2Apparatus and method for equalizing chromatic dispersion and digital coherent optical receiverZHANG HUIJIAN·Filed 2010·Granted Jun 25, 2013·16 cites·10 claims
- 0390US8374512B2Frequency offset monitoring device and optical coherent receiverFUJITSU LTD·Filed 2008·Granted Feb 12, 2013·17 cites·3 claims
- 0487US7970290B2Digital phase estimator, digital phase locked loop and optical coherent receiverFUJITSU LTD·Filed 2008·Granted Jun 28, 2011·13 cites·22 claims
- 0586US7953328B2Optical DQPSK transmitter phase monitor and controlFUJITSU LTD·Filed 2007·Granted May 31, 2011·9 cites·25 claims
- 0685US10560195B2Bias control apparatus and method of modulator of optical transmitter and optical transmitterFUJITSU LTD·Filed 2018·Granted Feb 11, 2020·5 cites·12 claims
- 0784US8532502B2Filter coefficient adjustment apparatusZHANG HUIJIAN·Filed 2009·Granted Sep 10, 2013·11 cites·10 claims
- 0883US8078066B2Optical coherent receiver, frequency offset estimating apparatus and method for optical coherent receiverLI LEI·Filed 2008·Granted Dec 13, 2011·9 cites·9 claims
- 0983US7676162B2Phase monitor used in optical receiverFUJITSU LTD·Filed 2006·Granted Mar 9, 2010·11 cites·9 claims
- 1082US8774313B2Nonlinear compensating apparatus and transmitterDOU LIANG·Filed 2011·Granted Jul 8, 2014·7 cites·10 claims
- 1181US9258060B2Method and apparatus for compensating nonlinear distortions in intensity modulation-direct detection systemFUJITSU LTD·Filed 2013·Granted Feb 9, 2016·6 cites·13 claims
- 1280US9654211B2Estimation apparatus and method for nonlinear distortion and receiverFUJITSU LTD·Filed 2015·Granted May 16, 2017·4 cites·8 claims
- 1380US7877025B2Phase monitor apparatus, phase control apparatus and methods thereof for optical DQPSK receiverFUJITSU LTD·Filed 2006·Granted Jan 25, 2011·8 cites·39 claims
- 1479US8103177B2Apparatus and method for frequency offset monitoring used in digital coherent optical receiverZHANG HUIJIAN·Filed 2009·Granted Jan 24, 2012·8 cites·11 claims
- 1577US11626928B2Performance estimation apparatus and method for nonlinear communication system and an electronic deviceFUJITSU LTD·Filed 2021·Granted Apr 11, 2023·1 cites·9 claims
- 1677US10345673B2Bias control apparatus and method of modulator of optical transmitter and optical transmitterFUJITSU LTD·Filed 2018·Granted Jul 9, 2019·1 cites·8 claims
- 1777US9825699B2Method and apparatus for correcting inter-channel power imbalance and receiverFUJITSU LTD·Filed 2016·Granted Nov 21, 2017·3 cites·20 claims
- 1877US9646116B2Nonlinear term selection apparatus and method, identification system and compensation systemFUJITSU LTD·Filed 2013·Granted May 9, 2017·4 cites·8 claims
- 1977US9300401B2Updating apparatus and method for equalizer coefficient, receiver and otpical communication systemFUJITSU LTD·Filed 2013·Granted Mar 29, 2016·4 cites·10 claims
- 2077US9258166B2Timing synchronization apparatus and method for multi-carrier modulation signalsFUJITSU LTD·Filed 2014·Granted Feb 9, 2016·4 cites·8 claims
- 2177US8995835B2Inverse channel apparatus and transmitter, receiver and system containing the apparatusFUJITSU LTD·Filed 2013·Granted Mar 31, 2015·4 cites·9 claims
- 2276US8761613B2External modulator monitoring device and external modulator monitoring methodDOU LIANG·Filed 2010·Granted Jun 24, 2014·5 cites·5 claims
- 2375US9998223B2Calculating apparatus and method for nonlinear weighting coefficientFUJITSU LTD·Filed 2015·Granted Jun 12, 2018·3 cites·5 claims
- 2474US12328140B2Measurement apparatus and method for nonlinear damages in optical linkFUJITSU LTD·Filed 2023·Granted Jun 10, 2025·0 cites·10 claims
- 2574US10243725B2Apparatus and method for generating transmitting sequence, training sequence synchronization apparatus and method, apparatus and method for estimating channel spacing and systemFUJITSU LTD·Filed 2017·Granted Mar 26, 2019·2 cites·9 claims
- 2674US8849131B2Polarization scattering compensation device and polarization scattering compensation methodLI LEI·Filed 2012·Granted Sep 30, 2014·3 cites·10 claims
- 2774US8086114B2Filter coefficient changing apparatus and methodLIU LING·Filed 2009·Granted Dec 27, 2011·6 cites·10 claims
- 2873US10263698B2Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiverFUJITSU LTD·Filed 2016·Granted Apr 16, 2019·2 cites·5 claims
- 2971US8566073B2Simulation device and simulation methodDOU LIANG·Filed 2010·Granted Oct 22, 2013·3 cites·15 claims
- 3069US10171162B2Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiverFUJITSU LTD·Filed 2017·Granted Jan 1, 2019·2 cites·14 claims
- 3169US9825708B2Compensation apparatus and method for inter-channel nonlinear damageFUJITSU LTD·Filed 2014·Granted Nov 21, 2017·2 cites·8 claims
- 3268US9160448B2Apparatus and method for estimating intra-channel nonlinear damageFUJITSU LTD·Filed 2014·Granted Oct 13, 2015·2 cites·14 claims
- 3367US9209899B2Method and apparatus for adaptive nonlinear equalization in a polarization multiplexing optical communication systemFUJITSU LTD·Filed 2012·Granted Dec 8, 2015·2 cites·12 claims
- 3467US8977119B2Automatic bias control method and apparatus for optical transmitterFUJITSU LTD·Filed 2013·Granted Mar 10, 2015·2 cites·8 claims
- 3567US8654826B2Multi-stage phase estimation method and apparatusLI JIANQIANG·Filed 2012·Granted Feb 18, 2014·2 cites·10 claims
- 3667US8103176B2Frequency offset compensating apparatus and method, and optical coherent receiverLI LEI·Filed 2008·Granted Jan 24, 2012·3 cites·8 claims
- 3766US12431912B2Mismatch error calibration method and apparatus of a time interleaving digital-to-analog converterFUJITSU LTD·Filed 2023·Granted Sep 30, 2025·0 cites·10 claims
- 3866US10742316B2Apparatus and method for monitoring change of polarization state resulted from optical link and optical receiverFUJITSU LTD·Filed 2019·Granted Aug 11, 2020·1 cites·10 claims
- 3966US10491294B2Signal processing apparatus, apparatus and method for monitoring channel spacing and systemFUJITSU LTD·Filed 2017·Granted Nov 26, 2019·1 cites·11 claims
- 4066US9985801B2Apparatus and method for estimating a frequency offset, apparatus and method for estimating a channel spacing and systemFUJITSU LTD·Filed 2017·Granted May 29, 2018·1 cites·8 claims
- 4166US9832083B2Apparatus and method for detecting channel spacing and systemFUJITSU LTD·Filed 2016·Granted Nov 28, 2017·1 cites·10 claims
- 4265US10404380B2Compensation apparatus for offset drift, received signal recovery apparatus and receiverFUJITSU LTD·Filed 2017·Granted Sep 3, 2019·1 cites·7 claims
- 4365US8762086B2Phase imbalance monitoring apparatus, amplitude imbalance monitoring apparatus, and apparatus using the sameTAO ZHENNING·Filed 2008·Granted Jun 24, 2014·3 cites·5 claims
- 4464US11881906B2Apparatus and method for measuring nonlinear signal-to-noise ratio, and test instrumentFUJITSU LTD·Filed 2022·Granted Jan 23, 2024·0 cites·17 claims
- 4564US10623128B2Apparatus and method for processing a frequency offset of a pilot and receiverFUJITSU LTD·Filed 2017·Granted Apr 14, 2020·1 cites·9 claims
- 4664US10454638B2Bit allocation method, apparatus for multicarrier modulation signal, and systemFUJITSU LTD·Filed 2015·Granted Oct 22, 2019·1 cites·9 claims
- 4764US8442406B2Filter, coherent receiver device and coherent receiving methodLI JIANQIANG·Filed 2011·Granted May 14, 2013·2 cites·12 claims
- 4864US8189718B2Adaptive optimization method and apparatus for average lengthLI LEI·Filed 2009·Granted May 29, 2012·2 cites·13 claims
- 4963US12452111B2Method, apparatus and communication system for evaluating nonlinear compensation performanceFUJITSU LTD·Filed 2023·Granted Oct 21, 2025·0 cites·9 claims
- 5063US9698904B2Apparatus for monitoring optical signal to noise ratio, transmitter and communication systemFUJITSU LTD·Filed 2015·Granted Jul 4, 2017·1 cites·9 claims
Showing the top 50 of 134 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →