Inventor · disambiguated record
Liang Dou
Also filed as: DOU LIANG
34 granted patents·2 pending applications·69 citations·filing 2010–2023
95Inventor score
Files withFUJITSU LTD30DOU LIANG3ALIBABA CHINA CO LTD1CLOUD INTELLIGENCE ASSETS HOLDING SINGAPORE PRIVATE LTD1HANGZHOU ALICLOUD FEITIAN INFORMATION TECH CO LTD1
Top patents by PatentIndex Score
36 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
- 0282US8774313B2Nonlinear compensating apparatus and transmitterDOU LIANG·Filed 2011·Granted Jul 8, 2014·7 cites·10 claims
- 0380US9654211B2Estimation apparatus and method for nonlinear distortion and receiverFUJITSU LTD·Filed 2015·Granted May 16, 2017·4 cites·8 claims
- 0477US9825699B2Method and apparatus for correcting inter-channel power imbalance and receiverFUJITSU LTD·Filed 2016·Granted Nov 21, 2017·3 cites·20 claims
- 0577US9300401B2Updating apparatus and method for equalizer coefficient, receiver and otpical communication systemFUJITSU LTD·Filed 2013·Granted Mar 29, 2016·4 cites·10 claims
- 0676US8761613B2External modulator monitoring device and external modulator monitoring methodDOU LIANG·Filed 2010·Granted Jun 24, 2014·5 cites·5 claims
- 0775US9998223B2Calculating apparatus and method for nonlinear weighting coefficientFUJITSU LTD·Filed 2015·Granted Jun 12, 2018·3 cites·5 claims
- 0874US10243725B2Apparatus 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
- 0973US10263698B2Monitoring apparatus for optical signal to noise ratio, signal transmission apparatus and receiverFUJITSU LTD·Filed 2016·Granted Apr 16, 2019·2 cites·5 claims
- 1071US8566073B2Simulation device and simulation methodDOU LIANG·Filed 2010·Granted Oct 22, 2013·3 cites·15 claims
- 1169US10171162B2Apparatus and method for measuring frequency response characteristics of optical transmitter and optical receiverFUJITSU LTD·Filed 2017·Granted Jan 1, 2019·2 cites·14 claims
- 1269US9825708B2Compensation apparatus and method for inter-channel nonlinear damageFUJITSU LTD·Filed 2014·Granted Nov 21, 2017·2 cites·8 claims
- 1368US9160448B2Apparatus and method for estimating intra-channel nonlinear damageFUJITSU LTD·Filed 2014·Granted Oct 13, 2015·2 cites·14 claims
- 1466US10491294B2Signal processing apparatus, apparatus and method for monitoring channel spacing and systemFUJITSU LTD·Filed 2017·Granted Nov 26, 2019·1 cites·11 claims
- 1566US9985801B2Apparatus 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
- 1666US9832083B2Apparatus and method for detecting channel spacing and systemFUJITSU LTD·Filed 2016·Granted Nov 28, 2017·1 cites·10 claims
- 1764US10623128B2Apparatus and method for processing a frequency offset of a pilot and receiverFUJITSU LTD·Filed 2017·Granted Apr 14, 2020·1 cites·9 claims
- 1863US9698904B2Apparatus for monitoring optical signal to noise ratio, transmitter and communication systemFUJITSU LTD·Filed 2015·Granted Jul 4, 2017·1 cites·9 claims
- 1961US9490901B2Bias monitoring method and apparatus and transmitterFUJITSU LTD·Filed 2015·Granted Nov 8, 2016·1 cites·9 claims
- 2056US12113572B2Method and apparatus for calculating configuration of optical transmission network, and optical transmission network systemALIBABA CHINA CO LTD·Filed 2022·Granted Oct 8, 2024·0 cites·20 claims
- 2152US2024421933A1Spectrum adjustment method for optical transmission system and network management systemHANGZHOU ALICLOUD FEITIAN INFORMATION TECH CO LTD·Filed 2023·Application pending·0 cites
- 2249US2025219756A1Fiber shuffle box, data processing method and computer storage mediumCLOUD INTELLIGENCE ASSETS HOLDING SINGAPORE PRIVATE LTD·Filed 2023·Application pending·0 cites
- 2347US9871581B2Monitoring apparatus and method for an optical signal-to-noise ratio and receiverFUJITSU LTD·Filed 2016·Granted Jan 16, 2018·0 cites·9 claims
- 2446US10574350B2Method and apparatus for estimating direct current bias of optical modulator and receiverFUJITSU LTD·Filed 2019·Granted Feb 25, 2020·0 cites·17 claims
- 2545US10771230B2Estimating apparatus for bias drift of transmitting end modulator, compensating apparatus and receiverFUJITSU LTD·Filed 2016·Granted Sep 8, 2020·0 cites·8 claims
- 2645US9979471B2Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipmentFUJITSU LTD·Filed 2016·Granted May 22, 2018·0 cites·12 claims
- 2744US9806922B2Apparatus for estimating channel spacing, apparatus for monitoring wavelength, and receiverFUJITSU LTD·Filed 2016·Granted Oct 31, 2017·0 cites·17 claims
- 2843US9143240B2Nonlinear compensating apparatus and method and transmitterFUJITSU LTD·Filed 2013·Granted Sep 22, 2015·0 cites·15 claims
- 2942US10225010B2Method and apparatus for measuring a filtering characteristic, pre-equalizer and communication equipmentFUJITSU LTD·Filed 2016·Granted Mar 5, 2019·0 cites·11 claims
- 3041US10367635B2Signal transmission apparatus, carrier phase recovery apparatus and methodFUJITSU LTD·Filed 2017·Granted Jul 30, 2019·0 cites·6 claims
- 3141US9882636B2Monitoring apparatus for an optical signal to noise ratio, signal transmission apparatus and receiverFUJITSU LTD·Filed 2016·Granted Jan 30, 2018·0 cites·4 claims
- 3240US10439852B2Signal processing apparatus, signal transmitting apparatus and receiverFUJITSU LTD·Filed 2016·Granted Oct 8, 2019·0 cites·3 claims
- 3340US8891669B2Nonlinear compensating apparatus and method and transmitterFUJITSU LTD·Filed 2012·Granted Nov 18, 2014·0 cites·9 claims
- 3440US8891684B2Nonlinear estimating apparatus and method and receiverFUJITSU LTD·Filed 2012·Granted Nov 18, 2014·0 cites·7 claims
- 3538US10116388B2Apparatus for measuring a filtering characteristic, pre-equalizer and communication equipmentFUJITSU LTD·Filed 2016·Granted Oct 30, 2018·0 cites·18 claims
- 3637US10230469B2Apparatus for measuring a filtering characteristic, pre-equalizer and optical communication equipmentFUJITSU LTD·Filed 2016·Granted Mar 12, 2019·0 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when Liang Dou files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →