Inventor
MATSUKAWA YOSHINOBU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “MATSUKAWA YOSHINOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
10 patentsUS6400729B1Jun 4, 2002
Protocol conversion system for data communication between different types of open networks
FUJITSU LTD130 citations95
US5805601ASep 8, 1998
System for controlling signal transfer between a plurality of devices
FUJITSU LTD44 citations91
US9900089B2Feb 20, 2018
Optical transmission device and method for checking optical connection in optical transmission device
FUJITSU LTD6 citations71
US9520959B2Dec 13, 2016
Optical drop apparatus, optical add apparatus, and optical add/drop apparatus
FUJITSU LTD6 citations71
US9300426B2Mar 29, 2016
Transmission apparatus, transmission system, and method of controlling average optical input power
FUJITSU LTD2 citations62
US8005357B2Aug 23, 2011
Optical transmission apparatus
FUJITSU LTD2 citations60
US7991286B2Aug 2, 2011
Optical transmission apparatus
FUJITSU LTD4 citations60
US11838103B2Dec 5, 2023
Wavelength conversion device and transmission system
FUJITSU LTD0 citations50
US9332326B2May 3, 2016
Optical transmission device and monitoring method of optical signal
FUJITSU LTD0 citations46
US8374500B2Feb 12, 2013
SONET/SDH transmission apparatus
FUJITSU LTD0 citations30