Takahashi Seigo

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Free-space optical communication receiving device and method of con...
- Patent number 10,862,593
- Issue date Dec 8, 2020
- NEC Corporation
- Kohei Hosokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Received signal processor and method for processing received signal
- Patent number 10,511,409
- Issue date Dec 17, 2019
- NEC Corporation
- Kohei Hosokawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Free space optical transmitter and free space optical communication...
- Patent number 10,454,577
- Issue date Oct 22, 2019
- NEC Corporation
- Seigo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication device, optical communication system, and opt...
- Patent number 10,411,802
- Issue date Sep 10, 2019
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Free space optical receiver and free space optical receiving method
- Patent number 10,313,011
- Issue date Jun 4, 2019
- NEC Corporation
- Seigo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Free space optical receiver and free space optical receiving method
- Patent number 10,256,904
- Issue date Apr 9, 2019
- NEC Corporation
- Seigo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Free space optical receiver and free space optical receiving method
- Patent number 10,122,447
- Issue date Nov 6, 2018
- NEC Corporation
- Seigo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret communication system and method for generating shared secret...
- Patent number 9,160,529
- Issue date Oct 13, 2015
- NEC Corporation
- Akio Tajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Motorcycle
- Patent number 9,097,201
- Issue date Aug 4, 2015
- Yamaha Hatsudoki Kabushiki Kaisha
- Seigo Takahashi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Circuit and method for controlling quality of random numbers
- Patent number 8,949,300
- Issue date Feb 3, 2015
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum key distribution system, optical transmitter, optical modul...
- Patent number 8,718,485
- Issue date May 6, 2014
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for managing shared random numbers in secret comm...
- Patent number 8,638,942
- Issue date Jan 28, 2014
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system and synchronization control method
- Patent number 8,391,491
- Issue date Mar 5, 2013
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bus control system and semiconductor integrated circuit
- Patent number 8,327,053
- Issue date Dec 4, 2012
- Fujitsu Semiconductor Limited
- Seigo Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and device for managing cryptographic keys in secret communi...
- Patent number 8,204,231
- Issue date Jun 19, 2012
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system and timing control method
- Patent number 8,184,989
- Issue date May 22, 2012
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system and method for controlling the same
- Patent number 8,171,354
- Issue date May 1, 2012
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable valve device for engine
- Patent number 8,096,272
- Issue date Jan 17, 2012
- Yamaha Hatsudoki Kabushiki Kaisha
- Seigo Takahashi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Secret communications system and channel control method
- Patent number 8,041,039
- Issue date Oct 18, 2011
- NEC Corporation
- Akio Tajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter and control method thereof
- Patent number 8,041,232
- Issue date Oct 18, 2011
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for measuring optical power of very weak light...
- Patent number 8,009,984
- Issue date Aug 30, 2011
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system and communication method using the same
- Patent number 7,974,540
- Issue date Jul 5, 2011
- Japan Science and Technology Agency
- Akihisa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable valve device for engine
- Patent number 7,938,100
- Issue date May 10, 2011
- Yamaha Hatsudoki Kabushiki Kaisha
- Seigo Takahashi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Grant
Communication system and method for controlling the same
- Patent number 7,934,132
- Issue date Apr 26, 2011
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication device and quantum key distribution system us...
- Patent number 7,907,850
- Issue date Mar 15, 2011
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication system and synchronization method thereof
- Patent number 7,783,042
- Issue date Aug 24, 2010
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Address translator and address translation method
- Patent number 7,761,686
- Issue date Jul 20, 2010
- Fujitsu Semiconductor Limited
- Seigo Takahashi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for managing shared information
- Patent number 7,734,757
- Issue date Jun 8, 2010
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Photo detecting circuit and noise elimination method utilized to pr...
- Patent number 7,560,683
- Issue date Jul 14, 2009
- NEC Corporation
- Seigo Takahashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Equalizer, equalization method, and transmitter
- Patent number 7,447,260
- Issue date Nov 4, 2008
- NEC Corporation
- Seigo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
FREE-SPACE OPTICAL COMMUNICATION RECEIVING DEVICE AND METHOD OF CON...
- Publication number 20200304213
- Publication date Sep 24, 2020
- NEC Corporation
- Kohei HOSOKAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RECEIVED SIGNAL PROCESSOR AND METHOD FOR PROCESSING RECEIVED SIGNAL
- Publication number 20180323904
- Publication date Nov 8, 2018
- NEC Corporation
- Kohei HOSOKAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FREE SPACE OPTICAL TRANSMITTER AND FREE SPACE OPTICAL COMMUNICATION...
- Publication number 20180234180
- Publication date Aug 16, 2018
- NEC Corporation
- Seigo TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL COMMUNICATION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPT...
- Publication number 20180212681
- Publication date Jul 26, 2018
- NEC Corporation
- Akihiro TANAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
- Publication number 20170264365
- Publication date Sep 14, 2017
- NEC Corporation
- Seigo TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
- Publication number 20170207850
- Publication date Jul 20, 2017
- NEC Corporation
- Seigo TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD
- Publication number 20170070289
- Publication date Mar 9, 2017
- NEC Corporation
- Seigo TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MOTORCYCLE
- Publication number 20130191009
- Publication date Jul 25, 2013
- YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Seigo Takahashi
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Application
SHARED RANDOM NUMBERS MANAGEMENT METHOD AND MANAGEMENT SYSTEM IN SE...
- Publication number 20110243331
- Publication date Oct 6, 2011
- NEC Corporation
- Wakako Yasuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION SYSTEM AND METHOD FOR CONTROLLING THE SAME
- Publication number 20110167299
- Publication date Jul 7, 2011
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BUS CONTROL SYSTEM AND SEMICONDUCTOR INTEGRATED CIRCUIT
- Publication number 20100306430
- Publication date Dec 2, 2010
- FUJITSU SEMICONDUCTOR LIMITED
- Seigo TAKAHASHI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
QUANTUM KEY DISTRIBUTION SYSTEM, OPTICAL TRANSMITTER, OPTICAL MODUL...
- Publication number 20100195831
- Publication date Aug 5, 2010
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND DEVICE FOR MANAGING CRYPTOGRAPHIC KEYS IN SECRET COMMUNI...
- Publication number 20090316910
- Publication date Dec 24, 2009
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for managing shared random numbers in secret comm...
- Publication number 20090262942
- Publication date Oct 22, 2009
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PHOTON DETECTION METHOD AND CIRCUIT HAVING PHASE ADJUSTER
- Publication number 20090236501
- Publication date Sep 24, 2009
- NEC Corporation
- Seigo Takahashi
- G01 - MEASURING TESTING
Information Patent Application
VARIABLE VALVE DEVICE FOR ENGINE
- Publication number 20090211548
- Publication date Aug 27, 2009
- YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Seigo TAKAHASHI
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
VARIABLE VALVE DEVICE FOR ENGINE
- Publication number 20090178646
- Publication date Jul 16, 2009
- YAMAHA HATSUDOKI KABUSHIKI KAISHA
- Seigo TAKAHASHI
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information Patent Application
OPTICAL TRANSMITTER AND CONTROL METHOD THEREOF
- Publication number 20090074425
- Publication date Mar 19, 2009
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for managing shared information
- Publication number 20080147820
- Publication date Jun 19, 2008
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CIRCUIT AND METHOD FOR CONTROLLING QUALITY OF RANDOM NUMBERS
- Publication number 20080052577
- Publication date Feb 28, 2008
- NEC Corporation
- Akihiro Tanaka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Secret communications system and channel control method
- Publication number 20080013738
- Publication date Jan 17, 2008
- NEC Corporation
- Akio Tajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communication device and quantum key distribution system us...
- Publication number 20070248362
- Publication date Oct 25, 2007
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Secret communication system and method for generating shared secret...
- Publication number 20070230688
- Publication date Oct 4, 2007
- NEC Corporation
- Akio Tajima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system and communication method using the same
- Publication number 20070110242
- Publication date May 17, 2007
- Japan Science and Technology Agency
- Akihisa Tomita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system and timing control method
- Publication number 20070110454
- Publication date May 17, 2007
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for measuring optical power of very weak light...
- Publication number 20070098402
- Publication date May 3, 2007
- NEC Corporation
- Wakako Maeda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system and synchronization control method
- Publication number 20070058810
- Publication date Mar 15, 2007
- NEC Corporation
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication system and method for controlling the same
- Publication number 20070009098
- Publication date Jan 11, 2007
- Akihiro Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Photo detecting circuit and noise elimination method
- Publication number 20060219871
- Publication date Oct 5, 2006
- NEC Corporation
- Seigo Takahashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Address translator and address translation method
- Publication number 20050273572
- Publication date Dec 8, 2005
- FUJITSU LIMITED
- Seigo Takahashi
- G06 - COMPUTING CALCULATING COUNTING

Takahashi Seigo

Person

Patents Grantslast 30 patents

Free-space optical communication receiving device and method of con...

Received signal processor and method for processing received signal

Free space optical transmitter and free space optical communication...

Optical communication device, optical communication system, and opt...

Free space optical receiver and free space optical receiving method

Free space optical receiver and free space optical receiving method

Free space optical receiver and free space optical receiving method

Secret communication system and method for generating shared secret...

Motorcycle

Circuit and method for controlling quality of random numbers

Quantum key distribution system, optical transmitter, optical modul...

Method and system for managing shared random numbers in secret comm...

Communication system and synchronization control method

Bus control system and semiconductor integrated circuit

Method and device for managing cryptographic keys in secret communi...

Communication system and timing control method

Communication system and method for controlling the same

Variable valve device for engine

Secret communications system and channel control method

Optical transmitter and control method thereof

Method and apparatus for measuring optical power of very weak light...

Communication system and communication method using the same

Variable valve device for engine

Communication system and method for controlling the same

Optical communication device and quantum key distribution system us...

Communication system and synchronization method thereof

Address translator and address translation method

Method and system for managing shared information

Photo detecting circuit and noise elimination method utilized to pr...

Equalizer, equalization method, and transmitter

Patents Applicationslast 30 patents

FREE-SPACE OPTICAL COMMUNICATION RECEIVING DEVICE AND METHOD OF CON...

RECEIVED SIGNAL PROCESSOR AND METHOD FOR PROCESSING RECEIVED SIGNAL

FREE SPACE OPTICAL TRANSMITTER AND FREE SPACE OPTICAL COMMUNICATION...

OPTICAL COMMUNICATION DEVICE, OPTICAL COMMUNICATION SYSTEM, AND OPT...

FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD

FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD

FREE SPACE OPTICAL RECEIVER AND FREE SPACE OPTICAL RECEIVING METHOD

MOTORCYCLE

SHARED RANDOM NUMBERS MANAGEMENT METHOD AND MANAGEMENT SYSTEM IN SE...

COMMUNICATION SYSTEM AND METHOD FOR CONTROLLING THE SAME

BUS CONTROL SYSTEM AND SEMICONDUCTOR INTEGRATED CIRCUIT

QUANTUM KEY DISTRIBUTION SYSTEM, OPTICAL TRANSMITTER, OPTICAL MODUL...

METHOD AND DEVICE FOR MANAGING CRYPTOGRAPHIC KEYS IN SECRET COMMUNI...

Method and system for managing shared random numbers in secret comm...

PHOTON DETECTION METHOD AND CIRCUIT HAVING PHASE ADJUSTER

VARIABLE VALVE DEVICE FOR ENGINE

VARIABLE VALVE DEVICE FOR ENGINE

OPTICAL TRANSMITTER AND CONTROL METHOD THEREOF

Method and system for managing shared information

CIRCUIT AND METHOD FOR CONTROLLING QUALITY OF RANDOM NUMBERS

Secret communications system and channel control method

Optical communication device and quantum key distribution system us...

Secret communication system and method for generating shared secret...

Communication system and communication method using the same

Communication system and timing control method

Method and apparatus for measuring optical power of very weak light...

Communication system and synchronization control method

Communication system and method for controlling the same

Photo detecting circuit and noise elimination method

Address translator and address translation method