Inventor
KAWANO TOSHIBUMI
JP3 patents
Patents
3 patentsUS5436750AJul 25, 1995
Optical repeatered transmission with fault locating capability
NEC CORP47 citations87
US6420962B1Jul 16, 2002
Automatic identification level control circuit, identification level control method, automatic identification phase control circuit, identification phase control method, optical receiver, and optical communication system
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US7120686B2Oct 10, 2006
Method and system for notification of maintenance information using portable terminal and computer program product
NEC CORP9 citations68