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Masanori Nakamura
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Optical transmission system, control apparatus, optical transmissio...
Patent number
12,184,337
Issue date
Dec 31, 2024
Nippon Telegraph and Telephone Corporation
Shuto Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, communication method and program
Patent number
12,057,863
Issue date
Aug 6, 2024
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical transmission system and characteristic estimation method
Patent number
11,901,953
Issue date
Feb 13, 2024
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
S/N ratio estimation circuit, and adaptive filter circuit
Patent number
11,870,489
Issue date
Jan 9, 2024
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, optical transmitting apparatus and opt...
Patent number
11,855,699
Issue date
Dec 26, 2023
Nippon Telegraph and Telephone Corporation
Shuto Yamamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication apparatus, and optical transmission system
Patent number
11,799,557
Issue date
Oct 24, 2023
Nippon Telegraph and Telephone Corporation
Takeshi Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal processing apparatus, signal processing method, and program
Patent number
11,799,547
Issue date
Oct 24, 2023
Nippon Telegraph and Telephone Corporation
Kengo Horikoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength dispersion amount calculation apparatus and wavelength d...
Patent number
11,742,950
Issue date
Aug 29, 2023
Nippon Telegraph and Telephone Corporation
Shimpei Shimizu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver evaluation method and optical receiver evaluation...
Patent number
11,736,202
Issue date
Aug 22, 2023
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitting apparatus and transmission characteristics est...
Patent number
11,728,889
Issue date
Aug 15, 2023
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system and compensation method
Patent number
11,711,151
Issue date
Jul 25, 2023
Nippon Telegraph and Telephone Corporation
Asuka Matsushita
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Symbol judgement apparatus and symbol judgement method
Patent number
11,706,065
Issue date
Jul 18, 2023
Nippon Telegraph and Telephone Corporation
Hiroki Taniguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength dispersion compensation apparatus, optical receiving app...
Patent number
11,683,093
Issue date
Jun 20, 2023
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Signal processing apparatus and signal processing method
Patent number
11,671,119
Issue date
Jun 6, 2023
Nippon Telegraph and Telephone Corporation
Seiji Okamoto
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Signal processing method, signal processing apparatus and communica...
Patent number
11,632,185
Issue date
Apr 18, 2023
Nippon Telegraph and Telephone Corporation
Takayuki Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission characteristics compensating method and optica...
Patent number
11,558,114
Issue date
Jan 17, 2023
NTT Electronics Corporation
Akihiro Yamagishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wavelength dispersion amount estimation apparatus
Patent number
11,463,169
Issue date
Oct 4, 2022
Nippon Telegraph and Telephone Corporation
Kengo Horikoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, optical receiving apparatus and optica...
Patent number
11,444,699
Issue date
Sep 13, 2022
Nippon Telegraph and Telephone Corporation
Akira Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generation device
Patent number
11,438,083
Issue date
Sep 6, 2022
Nippon Telegraph and Telephone Corporation
Hiroshi Yamazaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Automatic bias control circuit
Patent number
11,397,363
Issue date
Jul 26, 2022
Nippon Telegraph and Telephone Corporation
Hiroto Kawakami
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiving apparatus and waveform distortion compensation me...
Patent number
11,381,317
Issue date
Jul 5, 2022
Nippon Telegraph and Telephone Corporation
Seiji Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, optical transmitting apparatus, and op...
Patent number
11,349,572
Issue date
May 31, 2022
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system, optical transmitting apparatus, and optical r...
Patent number
11,303,359
Issue date
Apr 12, 2022
Nippon Telegraph and Telephone Corporation
Seiji Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital coherent receiver and digital coherent receiving method
Patent number
11,283,528
Issue date
Mar 22, 2022
Nippon Telegraph and Telephone Corporation
Akira Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitting system, optical transmitting apparatus, optica...
Patent number
11,283,527
Issue date
Mar 22, 2022
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Receiving apparatus and receiving method
Patent number
11,258,512
Issue date
Feb 22, 2022
Nippon Telegraph and Telephone Corporation
Seiji Okamoto
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission characteristics estimation method, optical tra...
Patent number
11,228,366
Issue date
Jan 18, 2022
NTT Electronics Corporation
Akihiro Yamagishi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmitter, optical receiver and communication system
Patent number
11,108,468
Issue date
Aug 31, 2021
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver, optical reception method, and optical communicati...
Patent number
10,826,620
Issue date
Nov 3, 2020
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver, optical transmission device, and method for optic...
Patent number
10,742,354
Issue date
Aug 11, 2020
Nippon Telegraph and Telephone Corporation
Masanori Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
ESTIMATION METHOD, OPTICAL RECEIVING APPARATUS, AND COMPUTER PROGRAM
Publication number
20250038860
Publication date
Jan 30, 2025
Nippon Telegraph and Telephone Corporation
Kyo MINOGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ENCODING CIRCUIT, DECODING CIRCUIT, ENCODING METHOD, DECODING METHO...
Publication number
20250038767
Publication date
Jan 30, 2025
Nippon Telegraph and Telephone Corporation
Takeshi KAKIZAKI
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, TRANSMITTER, AND CONTROL METHOD
Publication number
20240413922
Publication date
Dec 12, 2024
Nippon Telegraph and Telephone Corporation
Akira KAWAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, TRANSMISSION APPARATUS, RECEIVING APPA...
Publication number
20240283544
Publication date
Aug 22, 2024
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD AND COMMUNICA...
Publication number
20240267129
Publication date
Aug 8, 2024
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVEGUIDE ESTIMATION APPARATUS, WAVEGUIDE ESTIMATION METHOD AND PRO...
Publication number
20240259095
Publication date
Aug 1, 2024
Nippon Telegraph and Telephone Corporation
Akira KAWAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SIGNAL CONTROLLER, OPTICAL SIGNAL CONTROL METHOD, AND OPTIC...
Publication number
20240146420
Publication date
May 2, 2024
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CODING CIRCUIT, DECODING CIRCUIT, CODING METHOD, DECODING METHOD AN...
Publication number
20240080045
Publication date
Mar 7, 2024
Nippon Telegraph and Telephone Corporation
Takeshi KAKIZAKI
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
ADAPTIVE EQUALIZER, STEP SIZE DERIVATION METHOD AND PROGRAM
Publication number
20240007195
Publication date
Jan 4, 2024
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ADAPTIVE EQUALIZATION FILTER AND METHOD FOR UPDATING FILTER COEFFIC...
Publication number
20230421420
Publication date
Dec 28, 2023
Nippon Telegraph and Telephone Corporation
Etsushi YAMAZAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYMBOL DETERMINATION DEVICE AND TAP SELECTION METHOD
Publication number
20230361881
Publication date
Nov 9, 2023
Nippon Telegraph and Telephone Corporation
Hiroki TANIGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, CONTROL APPARATUS, OPTICAL TRANSMISSIO...
Publication number
20230291482
Publication date
Sep 14, 2023
Nippon Telegraph and Telephone Corporation
Shuto YAMAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL SIGNAL DEMODULATOR, CONTROL METHOD AND PROGRAM
Publication number
20230261759
Publication date
Aug 17, 2023
Nippon Telegraph and Telephone Corporation
Shuto YAMAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND CHARACTERISTIC ESTIMATION METHOD
Publication number
20230106338
Publication date
Apr 6, 2023
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING APPARATUS AND OPTICAL RECEIVING METHOD
Publication number
20230097741
Publication date
Mar 30, 2023
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
S/N RATIO ESTIMATION CIRCUIT, AND ADAPTIVE FILTER CIRCUIT
Publication number
20230097193
Publication date
Mar 30, 2023
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, COMMUNICATION METHOD AND PROGRAM
Publication number
20230091550
Publication date
Mar 23, 2023
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, OPTICAL TRANSMITTING APPARATUS AND OPT...
Publication number
20230071063
Publication date
Mar 9, 2023
Nippon Telegraph and Telephone Corporation
Shuto YAMAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTING APPARATUS AND TRANSMISSION CHARACTERISTICS EST...
Publication number
20220416890
Publication date
Dec 29, 2022
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVELENGTH DISPERSION AMOUNT CALCULATION APPARATUS AND WAVELENGTH D...
Publication number
20220407600
Publication date
Dec 22, 2022
Nippon Telegraph and Telephone Corporation
Shimpei SHIMIZU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND PROGRAM
Publication number
20220303003
Publication date
Sep 22, 2022
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION APPARATUS, AND OPTICAL TRANSMISSION SYSTEM
Publication number
20220294535
Publication date
Sep 15, 2022
Nippon Telegraph and Telephone Corporation
Takeshi Kakizaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVELENGTH DISPERSION COMPENSATION APPARATUS, OPTICAL RECEIVING APP...
Publication number
20220224415
Publication date
Jul 14, 2022
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
SYMBOL JUDGEMENT APPARATUS AND SYMBOL JUDGEMENT METHOD
Publication number
20220224575
Publication date
Jul 14, 2022
Nippon Telegraph and Telephone Corporation
Hiroki TANIGUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM AND COMPENSATION METHOD
Publication number
20220216923
Publication date
Jul 7, 2022
Nippon Telegraph and Telephone Corporation
Asuka MATSUSHITA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION CHARACTERISTICS COMPENSATING METHOD AND OPTICA...
Publication number
20220173807
Publication date
Jun 2, 2022
NTT ELECTRONICS CORPORATION
Akihiro YAMAGISHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
WAVELENGTH DISPERSION AMOUNT ESTIMATION APPARATUS
Publication number
20220158731
Publication date
May 19, 2022
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL PROCESSING METHOD, SIGNAL PROCESSING APPARATUS AND COMMUNICA...
Publication number
20220149974
Publication date
May 12, 2022
Nippon Telegraph and Telephone Corporation
Takayuki KOBAYASHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Receiver Evaluation Method and Optical Receiver Evaluation...
Publication number
20220140913
Publication date
May 5, 2022
Nippon Telegraph and Telephone Corporation
Shogo Yamanaka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVING APPARATUS AND WAVEFORM DISTORTION COMPENSATION ME...
Publication number
20220094440
Publication date
Mar 24, 2022
Nippon Telegraph and Telephone Corporation
Seiji OKAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE