Inventor · disambiguated record
Etsushi Yamazaki
Also filed as: YAMAZAKI ETSUSHI
44 granted patents·11 pending applications·108 citations·filing 2009–2022
96Inventor score
Files withNIPPON TELEGRAPH & TELEPHONE30NTT ELECTRONICS CORP15ISHIHARA KOICHI3NAKAGAWA TADAO3YAMAZAKI ETSUSHI2
Top patents by PatentIndex Score
55 records- 0196US8929750B2Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization systemISHIHARA KOICHI·Filed 2010·Granted Jan 6, 2015·53 cites·7 claims
- 0294US9621299B2Coherent communication system, communication method, and transmission methodNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Apr 11, 2017·15 cites·22 claims
- 0381US9614621B2Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization systemNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Apr 4, 2017·4 cites·5 claims
- 0480US10608743B2Transmission characteristic compensation apparatus, transmission characteristic compensation method, and communication apparatusNTT ELECTRONICS CORP·Filed 2017·Granted Mar 31, 2020·4 cites·14 claims
- 0578US9520947B2Signal generating circuit, optical signal transmitting apparatus, signal receiving circuit, method for establishing optical signal synchronization, and optical signal synchronization systemNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Dec 13, 2016·3 cites·7 claims
- 0677US8787769B2Chromatic dispersion value calculating apparatus, optical signal receiving apparatus, optical signal transmitting apparatus, and chromatic dispersion value calculation methodISHIHARA KOICHI·Filed 2010·Granted Jul 22, 2014·5 cites·22 claims
- 0773US10038507B2Optical transmission system, phase compensation method, and optical reception apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jul 31, 2018·3 cites·16 claims
- 0872US10868617B2Chromatic dispersion compensation device, chromatic dispersion compensation method, and communication deviceNTT ELECTRONICS CORP·Filed 2017·Granted Dec 15, 2020·2 cites·9 claims
- 0972US10305675B2Data phase tracking device, data phase tracking method and communication deviceNTT ELECTRONICS CORP·Filed 2017·Granted May 28, 2019·2 cites·16 claims
- 1071US10171173B2Optical signal transmission apparatus and optical signal transmission methodNIPPON TELEGRAPH & TELEPHONE·Filed 2015·Granted Jan 1, 2019·2 cites·18 claims
- 1169US8977141B2Digital signal processing apparatusHORIKOSHI KENGO·Filed 2012·Granted Mar 10, 2015·4 cites·10 claims
- 1265US10880193B2Error correction device, error correction method, and communication deviceNTT ELECTRONICS CORP·Filed 2017·Granted Dec 29, 2020·1 cites·8 claims
- 1365US8855485B2Frequency offset estimating method and frequency offset estimating apparatusNAKAGAWA TADAO·Filed 2011·Granted Oct 7, 2014·2 cites·10 claims
- 1464US10374718B2Optical transmission distortion compensation device, optical transmission distortion compensation method, and communication deviceNTT ELECTRONICS CORP·Filed 2017·Granted Aug 6, 2019·1 cites·13 claims
- 1562US8934782B2Transmission method, reception method, transmitter apparatus, and receiver deviceNAKAGAWA TADAO·Filed 2011·Granted Jan 13, 2015·2 cites·22 claims
- 1661US10422719B2Chromatic dispersion estimating circuit, optical reception device and chromatic dispersion amount estimating methodNTT ELECTRONICS CORP·Filed 2016·Granted Sep 24, 2019·1 cites·8 claims
- 1761US9698932B2Optical transmission/reception system, transmitter, receiver, and optical transmission/reception methodNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Jul 4, 2017·1 cites·10 claims
- 1861US9160600B2Method for receiving frequency domain multiplexed signal and device for receiving frequency domain multiplexed signalKUDO RIICHI·Filed 2010·Granted Oct 13, 2015·2 cites·16 claims
- 1960US12206450B2Phase difference distribution estimation method and phase difference distribution estimation apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 21, 2025·0 cites·4 claims
- 2059US11201721B2Frame synchronization apparatus, optical communication apparatus, and frame synchronization methodNTT ELECTRONICS CORP·Filed 2021·Granted Dec 14, 2021·0 cites·4 claims
- 2158US11323238B2Frame synchronization apparatus, optical communication apparatus, and frame synchronization methodNTT ELECTRONICS CORP·Filed 2019·Granted May 3, 2022·0 cites·11 claims
- 2256US8488696B2Receiver device, communication system and receiving methodISHIHARA KOICHI·Filed 2009·Granted Jul 16, 2013·1 cites·24 claims
- 2350US2025379659A1Sample interval synchronous position notification device, optical receiver and sample interval synchronous position notification methodNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 2450US2025323732A1Estimation apparatus, estimation method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 2549US12224889B2Adaptive equalization filter and method for updating filter coefficientsNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Feb 11, 2025·0 cites·8 claims
- 2649US12206458B2Communication apparatus and optical communication systemNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Jan 21, 2025·0 cites·5 claims
- 2749US11251870B2Optical transmission systemNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Feb 15, 2022·0 cites·7 claims
- 2848US10122462B2Transport apparatus and transport methodNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted Nov 6, 2018·0 cites·11 claims
- 2947US11349572B2Optical transmission system, optical transmitting apparatus, and optical receiving apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted May 31, 2022·0 cites·7 claims
- 3047US2025070871A1Communication method, optical receiving apparatus, optical transmitting apparatus, and communication systemNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3147US2025055573A1Gain adjustment method, optical receiving apparatus and computer programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3247US2025373330A1Optical transmission characteristics estimation apparatus, optical transmission characteristics estimation method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 3346US11671119B2Signal processing apparatus and signal processing methodNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Jun 6, 2023·0 cites·2 claims
- 3446US10396895B2Compensation coefficient calculation methodNTT ELECTRONICS CORP·Filed 2017·Granted Aug 27, 2019·0 cites·11 claims
- 3546US2024187107A1Frequency offset estimation apparatus, receiving apparatus, frequency offset estimation method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3646US2024146420A1Optical signal controller, optical signal control method, and optical signal transmission systemNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 3745US11799547B2Signal processing apparatus, signal processing method, and programNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Oct 24, 2023·0 cites·4 claims
- 3845US11316588B2Wavelength dispersion compensation apparatus, wavelength dispersion compensation method, and optical receiving apparatusNIPPON TELEGRAPH & TELEPHONE·Filed 2019·Granted Apr 26, 2022·0 cites·5 claims
- 3945US10128818B2Data processor, data processing method and communication deviceNTT ELECTRONICS CORP·Filed 2017·Granted Nov 13, 2018·0 cites·10 claims
- 4045US2025105917A1Optical transmission characteristic estimation apparatus, optical transmission characteristic estimation method and programNIPPON TELEGRAPH & TELEPHONE·Filed 2022·Application pending·0 cites
- 4144US12149285B2Optical wireless communication system and optical wireless communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Nov 19, 2024·0 cites·7 claims
- 4243US12224797B2Optical wireless communication device and optical wireless communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Granted Feb 11, 2025·0 cites·4 claims
- 4343US9667350B2Optical receiving device and phase cycle reduction methodNIPPON TELEGRAPH & TELEPHONE·Filed 2014·Granted May 30, 2017·0 cites·15 claims
- 4443US2024283544A1Optical transmission system, transmission apparatus, receiving apparatus and method for device characteristic estimationNIPPON TELEGRAPH & TELEPHONE·Filed 2021·Application pending·0 cites
- 4543US2024048250A1Wireless communication apparatus, wireless communication system and wireless communication methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 4641US10419127B2Phase compensation device, phase compensation method and communication apparatusNTT ELECTRONICS CORP·Filed 2017·Granted Sep 17, 2019·0 cites·8 claims
- 4740US2023097741A1Optical receiving apparatus and optical receiving methodNIPPON TELEGRAPH & TELEPHONE·Filed 2020·Application pending·0 cites
- 4839US10523335B2Known signal detection methodNTT ELECTRONICS CORP·Filed 2017·Granted Dec 31, 2019·0 cites·7 claims
- 4938US10685095B2Processing equipment and remote management systemNTT ELECTRONICS CORP·Filed 2016·Granted Jun 16, 2020·0 cites·13 claims
- 5038US10389452B2Coherent optical reception deviceNIPPON TELEGRAPH & TELEPHONE·Filed 2016·Granted Aug 20, 2019·0 cites·11 claims
Showing the top 50 of 55 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →