Keisuke Harada

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical signal-to-noise ratio measuring device and optical signal-t...
- Patent number 10,374,701
- Issue date Aug 6, 2019
- Fujitsu Limited
- Shoichiro Oda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical level control apparatus and optical reception apparatus
- Patent number 10,003,406
- Issue date Jun 19, 2018
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus
- Patent number 9,019,593
- Issue date Apr 28, 2015
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Level control circuit, level control method, and level control system
- Patent number 8,937,762
- Issue date Jan 20, 2015
- Fujitsu Limited
- Yutaka Kai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical output level control apparatus
- Patent number 8,824,043
- Issue date Sep 2, 2014
- Fujitsu Limited
- Setsuo Yoshida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication apparatus, control apparatus, and method for...
- Patent number 8,301,035
- Issue date Oct 30, 2012
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical packet switching apparatus
- Patent number 8,155,517
- Issue date Apr 10, 2012
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical output power automatic attenuation circuit for optical comm...
- Patent number 7,136,584
- Issue date Nov 14, 2006
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Soft decision method and receiver
- Patent number 6,115,435
- Issue date Sep 5, 2000
- Advanced Digital Television Broadcasting Laboratory
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL SIGNAL-TO-NOISE RATIO MEASURING DEVICE AND OPTICAL SIGNAL-T...
- Publication number 20170230112
- Publication date Aug 10, 2017
- Fujitsu Limited
- Shoichiro Oda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL LEVEL CONTROL APPARATUS AND OPTICAL RECEPTION APPARATUS
- Publication number 20150117871
- Publication date Apr 30, 2015
- Fujitsu Limited
- Setsuo YOSHIDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL OUTPUT LEVEL CONTROL APPARATUS
- Publication number 20140078579
- Publication date Mar 20, 2014
- Fujitsu Limited
- Setsuo YOSHIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM
- Publication number 20120293228
- Publication date Nov 22, 2012
- Fujitsu Limited
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFICATION APPARATUS
- Publication number 20120257272
- Publication date Oct 11, 2012
- Fujitsu Limited
- Setsuo YOSHIDA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM
- Publication number 20110254608
- Publication date Oct 20, 2011
- FUJITSU LIMTED
- Yutaka KAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL COMMUNICATION APPARATUS, CONTROL APPARATUS, AND METHOD FOR...
- Publication number 20100074629
- Publication date Mar 25, 2010
- FUJITSU LIMITED
- Keisuke HARADA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL PACKET SWITCHING APPARATUS
- Publication number 20100027992
- Publication date Feb 4, 2010
- Fujitsu Limited
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical output power automatic attenuation circuit for optical comm...
- Publication number 20060098270
- Publication date May 11, 2006
- FUJITSU LIMITED
- Keisuke Harada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Keisuke Harada

Person

Patents Grantslast 30 patents

Optical signal-to-noise ratio measuring device and optical signal-t...

Optical level control apparatus and optical reception apparatus

Optical amplification apparatus

Level control circuit, level control method, and level control system

Optical output level control apparatus

Optical communication apparatus, control apparatus, and method for...

Optical packet switching apparatus

Optical output power automatic attenuation circuit for optical comm...

Soft decision method and receiver

Patents Applicationslast 30 patents

OPTICAL SIGNAL-TO-NOISE RATIO MEASURING DEVICE AND OPTICAL SIGNAL-T...

OPTICAL LEVEL CONTROL APPARATUS AND OPTICAL RECEPTION APPARATUS

OPTICAL OUTPUT LEVEL CONTROL APPARATUS

LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM

OPTICAL AMPLIFICATION APPARATUS

LEVEL CONTROL CIRCUIT, LEVEL CONTROL METHOD, AND LEVEL CONTROL SYSTEM

OPTICAL COMMUNICATION APPARATUS, CONTROL APPARATUS, AND METHOD FOR...

OPTICAL PACKET SWITCHING APPARATUS

Optical output power automatic attenuation circuit for optical comm...