Inventor
SUEMURA YOSHIHIKO
JP28 patents
⚠️ This page may combine multiple inventors who share the name “SUEMURA YOSHIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
27 patentsUS7248561B2Jul 24, 2007
Path establishment method for establishing paths of different fault recovery types in a communications network
NEC CORP77 citations98
US6373911B1Apr 16, 2002
Bit synchronization circuit
NEC CORP89 citations98
US5887039AMar 23, 1999
Data transmission system using specific pattern for synchronization
NEC CORP66 citations96
US5812290ASep 22, 1998
Optical switching unit and control method for same
NEC CORP92 citations96
US5325382AJun 28, 1994
Method and electrode arrangement for inducing flat frequency modulation response in semiconductor laser
NEC CORP68 citations95
US6271949B1Aug 7, 2001
Optical communication system using wavelength-division multiplexed light
NEC CORP23 citations93
US5687181ANov 11, 1997
Parallel data transmission unit using byte error correcting code
NEC CORP25 citations93
US7471625B2Dec 30, 2008
Fault recovery system and method for a communications network
NEC CORP23 citations92
US7411964B2Aug 12, 2008
Communication network, path setting method and recording medium having path setting program recorded thereon
NEC CORP31 citations92
US6957018B2Oct 18, 2005
Optical packet exchange system and optical switch
NEC CORP26 citations92
US6760346B1Jul 6, 2004
Packet switching network
NEC CORP26 citations92
US6760552B1Jul 6, 2004
Optical receiving circuit and optical communication device
NEC CORP31 citations92
US6570687B2May 27, 2003
Optical packet exchange system and optical switch
NEC CORP13 citations92
US6441935B1Aug 27, 2002
Optical packet exchange system and optical switch
NEC CORP27 citations92
US6429955B1Aug 6, 2002
Optical network
NEC CORP22 citations92
US6243178B1Jun 5, 2001
Optical crossbar network using wavelength division multiplexing an optical crossbar exchange
NEC CORP46 citations92
US5400167AMar 21, 1995
Optical frequency acquisition apparatus for optical coherent communication system
NEC CORP25 citations92
US5506920AApr 9, 1996
Optical wavelength tunable filter
NEC CORP21 citations90
US7372806B2May 13, 2008
Fault recovery system and method for a communications network
NEC CORP14 citations84
US6445473B1Sep 3, 2002
Optical switching apparatus using wavelength division multiplexing technology
NEC CORP14 citations84
US7684417B2Mar 23, 2010
Method of migrating processes between networks and network system thereof
NEC CORP13 citations83
US7468944B2Dec 23, 2008
Path fault recovery method, switching-back method after recovery from fault, and node using the same
NEC CORP14 citations83
US6333800B1Dec 25, 2001
Optical communication system using wavelength-division multiplexed light
NEC CORP10 citations74
US7706284B2Apr 27, 2010
Link property setting method, route calculating method and system using the same
NEC CORP4 citations63
US6081557AJun 27, 2000
Datalink system and communication network
NEC CORP4 citations63
US7355979B2Apr 8, 2008
Communication network, path setting method, network management system and node
NEC CORP4 citations62
US7058303B2Jun 6, 2006
Optical cross-connecting device
NEC CORP3 citations62