Membership
Tour
Register
Log in
Fukutaro Hamaoka
Follow
Person
Musashino-shi, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
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
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
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 receiving apparatus and coefficient optimization method
Patent number
11,716,149
Issue date
Aug 1, 2023
Nippon Telegraph and Telephone Corporation
Takeo Sasai
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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
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
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
Optical transmission control method and optical transmission system
Patent number
11,245,487
Issue date
Feb 8, 2022
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
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 transmitter, optical receiver, optical data transmission sy...
Patent number
10,651,944
Issue date
May 12, 2020
Nippon Telegraph and Telephone Corporation
Kengo Horikoshi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Digital signal processing device
Patent number
9,749,061
Issue date
Aug 29, 2017
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system
Patent number
9,692,543
Issue date
Jun 27, 2017
Nippon Telegraph and Telephone Corporation
Toshiya Matsuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SIGNAL DETECTION DEVICE, SIGNAL DETECTION METHOD, AND PROGRAM
Publication number
20240388376
Publication date
Nov 21, 2024
Nippon Telegraph and Telephone Corporation
Koki SHIBAHARA
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
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
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
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 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 RECEIVING APPARATUS AND COEFFICIENT OPTIMIZATION METHOD
Publication number
20220131619
Publication date
Apr 28, 2022
Nippon Telegraph and Telephone Corporation
Takeo SASAI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM, OPTICAL RECEIVING APPARATUS AND OPTICA...
Publication number
20220069921
Publication date
Mar 3, 2022
Nippon Telegraph and Telephone Corporation
Akira MASUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTING SYSTEM, OPTICAL TRANSMITTING APPARATUS, OPTICA...
Publication number
20220029707
Publication date
Jan 27, 2022
Nippon Telegraph and Telephone Corporation
Masanori NAKAMURA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION SYSTEM, OPTICAL TRANSMITTING APPARATUS, AND OPTICAL R...
Publication number
20210384983
Publication date
Dec 9, 2021
Nippon Telegraph and Telephone Corporation
Seiji OKAMOTO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL COHERENT RECEIVER AND DIGITAL COHERENT RECEIVING METHOD
Publication number
20210218476
Publication date
Jul 15, 2021
Nippon Telegraph and Telephone Corporation
Akira MASUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION CONTROL METHOD AND OPTICAL TRANSMISSION SYSTEM
Publication number
20210211218
Publication date
Jul 8, 2021
Nippon Telegraph and Telephone Corporation
Fukutaro HAMAOKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTER, OPTICAL RECEIVER AND COMMUNICATION SYSTEM
Publication number
20200162167
Publication date
May 21, 2020
Nippon Telegraph and Telephone Corporation
Fukutaro HAMAOKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL RECEIVER, OPTICAL RECEPTION METHOD, AND OPTICAL COMMUNICATI...
Publication number
20200052793
Publication date
Feb 13, 2020
Nippon Telegraph and Telephone Corporation
Fukutaro HAMAOKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMITTER, OPTICAL RECEIVER, OPTICAL DATA TRANSMISSION SY...
Publication number
20190273560
Publication date
Sep 5, 2019
Nippon Telegraph and Telephone Corporation
Kengo HORIKOSHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL TRANSMISSION SYSTEM
Publication number
20160241352
Publication date
Aug 18, 2016
Nippon Telegraph and Telephone Corporation
Toshiya MATSUDA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
DIGITAL SIGNAL PROCESSING DEVICE
Publication number
20150236796
Publication date
Aug 20, 2015
Nippon Telegraph and Telephone Corporation
Fukutaro Hamaoka
H04 - ELECTRIC COMMUNICATION TECHNIQUE