Inventor
HAMADA TAKUJI
JP16 patents
Patents
16 patentsUS6728541B2Apr 27, 2004
Radio relay system
HITACHI LTD76 citations97
US4766590AAug 23, 1988
Loop transmission system having plural stations connected in a variable order
HITACHI LTD29 citations92
US4704714ANov 3, 1987
Method of detecting recovery from fault in a data transmission system which effects loopback control
HITACHI LTD27 citations92
US4530085AJul 16, 1985
Reconfiguration control method for a loop-type data network
HITACHI LTD44 citations92
US5657327AAug 12, 1997
Data transmission method and system for hub-based network
HITACHI LTD22 citations90
US4604742AAug 5, 1986
Loop type data transmission system
HITACHI LTD23 citations82
US4949336AAug 14, 1990
Multi-slot access system
HITACHI LTD21 citations81
US6934516B2Aug 23, 2005
Radio network system
HITACHI LTD7 citations73
US4432054AFeb 14, 1984
Loop data transmission control method and system
HITACHI LTD18 citations73
US4416008ANov 15, 1983
Dual loop type data highway system
HITACHI LTD10 citations73
US5517669AMay 14, 1996
Cyclic data communication system
HITACHI LTD12 citations72
US5497370AMar 5, 1996
Network system
HITACHI LTD16 citations72
US4855993AAug 8, 1989
Method and apparatus for detecting a fault in a ring network data transmission system
HITACHI LTD12 citations72
US6625421B1Sep 23, 2003
Radio network system
HITACHI LTD4 citations62
US4510494AApr 9, 1985
Loop type data highway system
HITACHI LTD3 citations61
US5724350AMar 3, 1998
Data transmission method and system for hub-based network
HITACHI LTD4 citations60