Inventor
TANIGUCHI ATSUKI
JP20 patents
Patents
20 patentsUS6674771B1Jan 6, 2004
Transmission method and apparatus for transmitting low-speed SDH signals using a high-speed SDH frame
FUJITSU LTD23 citations92
US6456587B2Sep 24, 2002
Ring transmission system and squelch method used for same
FUJITSU LTD33 citations92
US6130764AOct 10, 2000
Transmission apparatus in ring network
FUJITSU LTD25 citations92
US6122250ASep 19, 2000
Ring transmission system and squelch method used for same
FUJITSU LTD39 citations92
US6118795ASep 12, 2000
Reception pointer processing apparatus in SDH transmission system
FUJITSU LTD36 citations92
US5099477AMar 24, 1992
Phase matching circuit
FUJITSU LTD25 citations92
US5056120AOct 8, 1991
Phase adjusting circuit
FUJITSU LTD36 citations92
US5909175AJun 1, 1999
Connection switching circuit for ring system
FUJITSU LTD23 citations91
US6895182B1May 17, 2005
Optical ring transmission system using squelch method
FUJITSU LTD24 citations90
US5534822AJul 9, 1996
Parallel phase-locked loop oscillator circuits with average frequency calculation of input stage loop
FUJITSU LTD29 citations90
US5867544AFeb 2, 1999
Phase-locked loop oscillator, and moving-average circuit, and division-ratio equalization circuit suitable for use in the same
FUJITSU LTD17 citations84
US6728925B2Apr 27, 2004
Error correcting method and apparatus
FUJITSU LTD14 citations83
US5844889ADec 1, 1998
Different system transfer method for a ring transmission system and transmission apparatus
FUJITSU LTD14 citations73
US5020057AMay 28, 1991
Easy detection of head position of information data via reception processing unit in synchronous multiplex transmission apparatus
FUJITSU LTD15 citations73
US5319637AJun 7, 1994
Synchronous control method in plurality of channel units and circuit using said method
FUJITSU LTD9 citations68
US4935920AJun 19, 1990
Drop/insert processing circuit
FUJITSU LTD9 citations68
US7359316B1Apr 15, 2008
Reception pointer processing apparatus in SDH transmission system
FUJITSU LTD3 citations62
US6496518B1Dec 17, 2002
SDH transmission system, and frame transmission method in SDH transmission system and SDH transmission unit
FUJITSU LTD6 citations62
US6337848B1Jan 8, 2002
Path switching device for transmission apparatus
FUJITSU LTD5 citations62
US6763038B1Jul 13, 2004
Light transmission equipment
FUJITSU LTD2 citations56