The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 1997
Filed:
Sep. 20, 1994
Applicant:
Inventors:
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Software Engineering Co., Ltd, Yokohama, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
34082502 ; 34082516 ; 395750 ; 364138 ; 364188 ; 370445 ;
Abstract
A network management system includes network stations each having a power source and a power switch to turn the power source on and off, a network management station to monitor the network stations, and a communication network enabling connections between the network stations and the network management station. When turned off by the power switch, the network station enables communication with the network management station and then sends an event to notify the power-off state thereto. This enables the network management system to display whether the communication failure is caused by a network failure or the power-off of the network station.