Nobukazu Koizumi

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Signal processing device and transmission device
- Patent number 11,476,946
- Issue date Oct 18, 2022
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalizer, optical receiver, and optical transmission system
- Patent number 11,159,352
- Issue date Oct 26, 2021
- Fujitsu Limited
- Daisuke Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalizer, optical receiver, and adaptive equalization method
- Patent number 11,146,428
- Issue date Oct 12, 2021
- Fujitsu Limited
- Daisuke Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalization circuit and optical receiver
- Patent number 10,931,485
- Issue date Feb 23, 2021
- Fujitsu Limited
- Yuya Imoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing circuit and optical receiving device
- Patent number 10,560,199
- Issue date Feb 11, 2020
- Fujitsu Limited
- Yuya Imoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplitude adjustment circuit, digital coherent receiver, and amplit...
- Patent number 10,177,855
- Issue date Jan 8, 2019
- Fujitsu Limited
- Masashi Sato
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Adaptive equalization circuit, digital coherent receiver, and adapt...
- Patent number 9,680,667
- Issue date Jun 13, 2017
- Fujitsu Limited
- Daisuke Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing apparatus, signal processing method, and signal p...
- Patent number 9,660,733
- Issue date May 23, 2017
- Fujitsu Limited
- Masashi Sato
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Optical communication receiving device and frequency offset compens...
- Patent number 9,496,966
- Issue date Nov 15, 2016
- Fujitsu Limited
- Kazuhiko Hatae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital coherent receiving apparatus
- Patent number 9,444,554
- Issue date Sep 13, 2016
- Fujitsu Limited
- Nobukazu Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalizer tap coefficient correction method and optical re...
- Patent number 9,407,471
- Issue date Aug 2, 2016
- Fujitsu Limited
- Taku Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loop filter
- Patent number 8,861,980
- Issue date Oct 14, 2014
- Fujitsu Limited
- Yasuo Ohtomo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalizer, optical receiver, and tap coefficient correctin...
- Patent number 8,693,898
- Issue date Apr 8, 2014
- Fujitsu Limited
- Nobukazu Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital coherent receiving apparatus
- Patent number 8,649,689
- Issue date Feb 11, 2014
- Fujitsu Limited
- Nobukazu Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical digital coherent receiver
- Patent number 8,606,118
- Issue date Dec 10, 2013
- Fujitsu Limited
- Kazuhiko Hatae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Simulation method and simulation apparatus
- Patent number 8,428,927
- Issue date Apr 23, 2013
- Fujitsu Limited
- Noriyasu Nakayama
- G01 - MEASURING TESTING
Information Patent Grant
Memory control method and memory control device
- Patent number 8,264,902
- Issue date Sep 11, 2012
- Fujitsu Limited
- Shizuko Maruyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Performance evaluation simulation
- Patent number 8,214,189
- Issue date Jul 3, 2012
- Fujitsu Limited
- Tomoki Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital subscriber line communicating system
- Patent number 7,555,055
- Issue date Jun 30, 2009
- Fujitsu Limited
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line transmission method, apparatus and system
- Patent number 7,423,984
- Issue date Sep 9, 2008
- Fujitsu Limited
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification device
- Patent number 7,417,792
- Issue date Aug 26, 2008
- Fujitsu Limited
- Kazuhiko Hatae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Controlling apparatus for optical amplifier and controlling method...
- Patent number 7,388,711
- Issue date Jun 17, 2008
- Fujitsu Limited
- Masato Oota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line communicating system
- Patent number 7,386,037
- Issue date Jun 10, 2008
- Fujitsu Limited
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line transmission method, apparatus and system
- Patent number 7,336,627
- Issue date Feb 26, 2008
- Fujitsu Limited
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line communicating system
- Patent number 7,295,620
- Issue date Nov 13, 2007
- Fujitsu Limited
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line transmission method, apparatus and system
- Patent number 7,286,495
- Issue date Oct 23, 2007
- Fujitsu Limited
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line communicating system
- Patent number 7,173,984
- Issue date Feb 6, 2007
- Fujitsu Limited
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line communicating system and a transceiver in t...
- Patent number 7,167,509
- Issue date Jan 23, 2007
- Fujitsu Limited
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Controlling apparatus for optical amplifier and controlling method...
- Patent number 7,158,290
- Issue date Jan 2, 2007
- Fujitsu Limited
- Masato Oota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital subscriber line communicating system
- Patent number 7,126,995
- Issue date Oct 24, 2006
- Fujitsu Limited
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SIGNAL PROCESSING DEVICE AND TRANSMISSION DEVICE
- Publication number 20220303021
- Publication date Sep 22, 2022
- Fujitsu Limited
- Yoshitaka Nomura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE EQUALIZER, OPTICAL RECEIVER, AND OPTICAL TRANSMISSION SYSTEM
- Publication number 20210160108
- Publication date May 27, 2021
- Fujitsu Limited
- Daisuke SASAKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE EQUALIZER, OPTICAL RECEIVER, AND ADAPTIVE EQUALIZATION METHOD
- Publication number 20210152403
- Publication date May 20, 2021
- Fujitsu Limited
- Daisuke SASAKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE EQUALIZATION CIRCUIT AND OPTICAL RECEIVER
- Publication number 20200267030
- Publication date Aug 20, 2020
- Fujitsu Limited
- Yuya IMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING CIRCUIT AND OPTICAL RECEIVING DEVICE
- Publication number 20190280779
- Publication date Sep 12, 2019
- Fujitsu Limited
- Yuya IMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AMPLITUDE ADJUSTMENT CIRCUIT, DIGITAL COHERENT RECEIVER, AND AMPLIT...
- Publication number 20180123701
- Publication date May 3, 2018
- Fujitsu Limited
- Masashi Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE EQUALIZATION CIRCUIT, DIGITAL COHERENT RECEIVER, AND ADAPT...
- Publication number 20170012803
- Publication date Jan 12, 2017
- Fujitsu Limited
- Daisuke SASAKI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND SIGNAL P...
- Publication number 20160134261
- Publication date May 12, 2016
- Fujitsu Limited
- Masashi Sato
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
OPTICAL COMMUNICATION RECEIVING DEVICE AND FREQUENCY OFFSET COMPENS...
- Publication number 20150098714
- Publication date Apr 9, 2015
- FUJITSU LIMITED
- Kazuhiko HATAE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ADAPTIVE EQUALIZER TAP COEFFICIENT CORRECTION METHOD AND OPTICAL RE...
- Publication number 20140212132
- Publication date Jul 31, 2014
- Fujitsu Limited
- Taku Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIGITAL COHERENT RECEIVING APPARATUS
- Publication number 20140029959
- Publication date Jan 30, 2014
- Fujitsu Limited
- Nobukazu KOIZUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Adaptive equalizer, optical receiver, and tap coefficient correctin...
- Publication number 20120134684
- Publication date May 31, 2012
- FUJITSU LIMITED
- Nobukazu Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOOP FILTER
- Publication number 20120134685
- Publication date May 31, 2012
- Fujitsu Limited
- Yasuo OHTOMO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL DIGITAL COHERENT RECEIVER
- Publication number 20120128377
- Publication date May 24, 2012
- Fujitsu Limited
- Kazuhiko HATAE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIGITAL COHERENT RECEIVING APPARATUS
- Publication number 20100329697
- Publication date Dec 30, 2010
- FUJITSU LIMITED
- Nobukazu KOIZUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIGITAL SIGNAL PROCESSING APPARATUS AND DIGITAL SIGNAL PROCESSING M...
- Publication number 20100325184
- Publication date Dec 23, 2010
- Fujitsu Limited
- Yasutaka Kanayama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MEMORY CONTROL METHOD AND MEMORY CONTROL DEVICE
- Publication number 20100284234
- Publication date Nov 11, 2010
- Fujitsu Limited
- Shizuko Maruyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Simulation method, electronic apparatus design method, and simulati...
- Publication number 20100204975
- Publication date Aug 12, 2010
- FUJITSU LIMITED
- Noriyasu Nakayama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Performance evaluation simulation
- Publication number 20090204380
- Publication date Aug 13, 2009
- FUJITSU LIMITED
- Tomoki Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Circuit evaluation method and circuit evaluation apparatus
- Publication number 20070124129
- Publication date May 31, 2007
- FUJITSU LIMITED
- Yasuo Ohtomo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Controlling apparatus for optical amplifier and controlling method...
- Publication number 20070070492
- Publication date Mar 29, 2007
- Fujitsu Limited
- Masato Oota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Support apparatus and computer-readable storage medium
- Publication number 20070038660
- Publication date Feb 15, 2007
- FUJITSU LIMITED
- Noriyasu Nakayama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Workflow management apparatus, workflow management program, and wor...
- Publication number 20060026595
- Publication date Feb 2, 2006
- FUJITSU LIMITED
- Noriyasu Nakayama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital subscriber line transmission method, apparatus and system
- Publication number 20050237954
- Publication date Oct 27, 2005
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital subscriber line transmission method, apparatus and system
- Publication number 20050232171
- Publication date Oct 20, 2005
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Matched filter system
- Publication number 20050232343
- Publication date Oct 20, 2005
- Kazuhiko Sakai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplification device
- Publication number 20050157380
- Publication date Jul 21, 2005
- FUJITSU LIMITED
- Kazuhiko Hatae
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital subscriber line communicating system and a transceiver in t...
- Publication number 20050157779
- Publication date Jul 21, 2005
- Kazutomo Hasegawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Controlling apparatus for optical amplifier and controlling method...
- Publication number 20050116147
- Publication date Jun 2, 2005
- FUJITSU LIMITED
- Masato Oota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital subscriber line communicating system
- Publication number 20050105601
- Publication date May 19, 2005
- Seiji Miyoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Nobukazu Koizumi

Person

Patents Grantslast 30 patents

Signal processing device and transmission device

Adaptive equalizer, optical receiver, and optical transmission system

Adaptive equalizer, optical receiver, and adaptive equalization method

Adaptive equalization circuit and optical receiver

Signal processing circuit and optical receiving device

Amplitude adjustment circuit, digital coherent receiver, and amplit...

Adaptive equalization circuit, digital coherent receiver, and adapt...

Signal processing apparatus, signal processing method, and signal p...

Optical communication receiving device and frequency offset compens...

Digital coherent receiving apparatus

Adaptive equalizer tap coefficient correction method and optical re...

Loop filter

Adaptive equalizer, optical receiver, and tap coefficient correctin...

Digital coherent receiving apparatus

Optical digital coherent receiver

Simulation method and simulation apparatus

Memory control method and memory control device

Performance evaluation simulation

Digital subscriber line communicating system

Digital subscriber line transmission method, apparatus and system

Optical amplification device

Controlling apparatus for optical amplifier and controlling method...

Digital subscriber line communicating system

Digital subscriber line transmission method, apparatus and system

Digital subscriber line communicating system

Digital subscriber line transmission method, apparatus and system

Digital subscriber line communicating system

Digital subscriber line communicating system and a transceiver in t...

Controlling apparatus for optical amplifier and controlling method...

Digital subscriber line communicating system

Patents Applicationslast 30 patents

SIGNAL PROCESSING DEVICE AND TRANSMISSION DEVICE

ADAPTIVE EQUALIZER, OPTICAL RECEIVER, AND OPTICAL TRANSMISSION SYSTEM

ADAPTIVE EQUALIZER, OPTICAL RECEIVER, AND ADAPTIVE EQUALIZATION METHOD

ADAPTIVE EQUALIZATION CIRCUIT AND OPTICAL RECEIVER

SIGNAL PROCESSING CIRCUIT AND OPTICAL RECEIVING DEVICE

AMPLITUDE ADJUSTMENT CIRCUIT, DIGITAL COHERENT RECEIVER, AND AMPLIT...

ADAPTIVE EQUALIZATION CIRCUIT, DIGITAL COHERENT RECEIVER, AND ADAPT...

SIGNAL PROCESSING APPARATUS, SIGNAL PROCESSING METHOD, AND SIGNAL P...

OPTICAL COMMUNICATION RECEIVING DEVICE AND FREQUENCY OFFSET COMPENS...

ADAPTIVE EQUALIZER TAP COEFFICIENT CORRECTION METHOD AND OPTICAL RE...

DIGITAL COHERENT RECEIVING APPARATUS

Adaptive equalizer, optical receiver, and tap coefficient correctin...

LOOP FILTER

OPTICAL DIGITAL COHERENT RECEIVER

DIGITAL COHERENT RECEIVING APPARATUS

DIGITAL SIGNAL PROCESSING APPARATUS AND DIGITAL SIGNAL PROCESSING M...

MEMORY CONTROL METHOD AND MEMORY CONTROL DEVICE

Simulation method, electronic apparatus design method, and simulati...

Performance evaluation simulation

Circuit evaluation method and circuit evaluation apparatus

Controlling apparatus for optical amplifier and controlling method...

Support apparatus and computer-readable storage medium

Workflow management apparatus, workflow management program, and wor...

Digital subscriber line transmission method, apparatus and system

Digital subscriber line transmission method, apparatus and system

Matched filter system

Optical amplification device

Digital subscriber line communicating system and a transceiver in t...

Controlling apparatus for optical amplifier and controlling method...

Digital subscriber line communicating system