Hirofumi ARAKI

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transmission apparatus, optical transmission system, and po...
- Patent number 9,882,647
- Issue date Jan 30, 2018
- Fujitsu Limited
- Taketo Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission apparatus and method for controlling optical p...
- Patent number 9,722,704
- Issue date Aug 1, 2017
- Fujitsu Limited
- Taku Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, wavelength control method and node
- Patent number 9,667,346
- Issue date May 30, 2017
- Fujitsu Limited
- Hirofumi Araki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal processing device, optical signal processing method...
- Patent number 9,564,964
- Issue date Feb 7, 2017
- Fujitsu Limited
- Taku Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver and signal processing method for optical receiver
- Patent number 9,413,522
- Issue date Aug 9, 2016
- Fujitsu Limited
- Daijiro Tanaka
- 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
Method and apparatus for preventing occurrence of surge light in op...
- Patent number 5,570,227
- Issue date Oct 29, 1996
- Fujitsu Limited
- Yoshio Nabeyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSMISSION APPARATUS AND METHOD FOR CONTROLLING OPTICAL P...
- Publication number 20160248513
- Publication date Aug 25, 2016
- Fujitsu Limited
- Taku Saito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND PO...
- Publication number 20160241341
- Publication date Aug 18, 2016
- Fujitsu Limited
- Taketo Endo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMISSION SYSTEM, WAVELENGTH CONTROL METHOD AND NODE
- Publication number 20160204875
- Publication date Jul 14, 2016
- Fujitsu Limited
- Hirofumi Araki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TRANSMISSION SYSTEM, TRANSMISSION DEVICE, AND TRANSMISSION METHOD
- Publication number 20160142300
- Publication date May 19, 2016
- Fujitsu Limited
- Hirofumi Araki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSCEIVER AND SIGNAL PROCESSING METHOD FOR OPTICAL TRANSC...
- Publication number 20150229401
- Publication date Aug 13, 2015
- Fujitsu Limited
- Daijiro TANAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL SIGNAL PROCESSING DEVICE, OPTICAL SIGNAL PROCESSING METHOD...
- Publication number 20140363154
- Publication date Dec 11, 2014
- Fujitsu Limited
- Taku SAITO
- 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
Frame synchronization device and frame synchronization method
- Publication number 20030037297
- Publication date Feb 20, 2003
- Hirofumi Araki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hirofumi ARAKI

Person

Patents Grantslast 30 patents

Optical transmission apparatus, optical transmission system, and po...

Optical transmission apparatus and method for controlling optical p...

Optical transmission system, wavelength control method and node

Optical signal processing device, optical signal processing method...

Optical receiver and signal processing method for optical receiver

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

Method and apparatus for preventing occurrence of surge light in op...

Patents Applicationslast 30 patents

OPTICAL TRANSMISSION APPARATUS AND METHOD FOR CONTROLLING OPTICAL P...

OPTICAL TRANSMISSION APPARATUS, OPTICAL TRANSMISSION SYSTEM, AND PO...

OPTICAL TRANSMISSION SYSTEM, WAVELENGTH CONTROL METHOD AND NODE

TRANSMISSION SYSTEM, TRANSMISSION DEVICE, AND TRANSMISSION METHOD

OPTICAL TRANSCEIVER AND SIGNAL PROCESSING METHOD FOR OPTICAL TRANSC...

OPTICAL SIGNAL PROCESSING DEVICE, OPTICAL SIGNAL PROCESSING METHOD...

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

Frame synchronization device and frame synchronization method