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Akihide Sano
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Yokosuka-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
9,614,621
Issue date
Apr 4, 2017
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
9,520,947
Issue date
Dec 13, 2016
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for receiving frequency domain multiplexed signal and device...
Patent number
9,160,600
Issue date
Oct 13, 2015
Nippon Telegraph and Telephone Corporation
Riichi Kudo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission method, reception method, transmitter apparatus, and r...
Patent number
8,934,782
Issue date
Jan 13, 2015
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Signal generating circuit, optical signal transmitting apparatus, s...
Patent number
8,929,750
Issue date
Jan 6, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Frequency offset estimating method and frequency offset estimating...
Patent number
8,855,485
Issue date
Oct 7, 2014
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Chromatic dispersion value calculating apparatus, optical signal re...
Patent number
8,787,769
Issue date
Jul 22, 2014
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Frequency offset estimation apparatus, reception apparatus, frequen...
Patent number
8,781,029
Issue date
Jul 15, 2014
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Receiver device, communication system and receiving method
Patent number
8,488,696
Issue date
Jul 16, 2013
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical modulation circuit and optical transmission system
Patent number
8,437,638
Issue date
May 7, 2013
Nippon Telegraph and Telephone Corporation
Takayuki Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical OFDM receiver, optical transmission system, subcarrier sepa...
Patent number
8,355,637
Issue date
Jan 15, 2013
Nippon Telegraph and Telephone Corporation
Akihide Sano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, optical transmitter for optical transm...
Patent number
8,005,374
Issue date
Aug 23, 2011
Nippon Telegraph and Telephone Corporation
Kazushige Yonenaga
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical transmission system, optical transmitter for optical transm...
Patent number
7,734,194
Issue date
Jun 8, 2010
Nippon Telegraph and Telephone Corporation
Kazushige Yonenaga
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20150078765
Publication date
Mar 19, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20150078762
Publication date
Mar 19, 2015
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREQUENCY OFFSET ESTIMATION APPARATUS, FREQUENCY OFFSET ESTIMATION...
Publication number
20130070874
Publication date
Mar 21, 2013
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
FREQUENCY OFFSET ESTIMATING METHOD AND FREQUENCY OFFSET ESTIMATING...
Publication number
20130028595
Publication date
Jan 31, 2013
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
TRANSMISSION METHOD, RECEPTION METHOD, TRANSMITTER APPARATUS, AND R...
Publication number
20120315043
Publication date
Dec 13, 2012
Nippon Telegraph and Telephone Corporation
Tadao Nakagawa
G02 - OPTICS
Information
Patent Application
METHOD FOR RECEIVING FREQUENCY DOMAIN MULTIPLEXED SIGNAL AND DEVICE...
Publication number
20120106618
Publication date
May 3, 2012
Nippon Telegraph and Telephone Corporation
Riichi Kudo
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CHROMATIC DISPERSION VALUE CALCULATING APPARATUS, OPTICAL SIGNAL RE...
Publication number
20120099864
Publication date
Apr 26, 2012
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SIGNAL GENERATING CIRCUIT, OPTICAL SIGNAL TRANSMITTING APPARATUS, S...
Publication number
20120070159
Publication date
Mar 22, 2012
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RECEIVER DEVICE, COMMUNICATION SYSTEM AND RECEIVING METHOD
Publication number
20110129041
Publication date
Jun 2, 2011
Nippon Telegraph and Telephone Corporation
Koichi Ishihara
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL OFDM RECEIVER, OPTICAL TRANSMISSION SYSTEM, SUBCARRIER SEPA...
Publication number
20110002689
Publication date
Jan 6, 2011
Nippon Telegraph and Telephone Corporation
Akihide Sano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
OPTICAL MODULATION CIRCUIT AND OPTICAL TRANSMISSION SYSTEM
Publication number
20100220376
Publication date
Sep 2, 2010
Takayuki Kobayashi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Optical Transmission System, Optical Transmitter for Optical Transm...
Publication number
20100172653
Publication date
Jul 8, 2010
Nippon Telegraph and Telephone Corporation
Kazushige Yonenaga
H04 - ELECTRIC COMMUNICATION TECHNIQUE