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. 09, 2001
Filed:
Jul. 09, 1997
Yoshifumi Atarashi, Zama, JP;
Kenji Hayashi, Hadano, JP;
Naoya Ikeda, Ebina, JP;
Shoichiro Yamaguchi, Hiratsuka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In order to realize server switching to a backup server from a working server without changing any setting on a client computer, a network system is provided having a network supervising means for supervising operations of a plurality of server computers connected to the network, a server switching means for realizing server switching in which the backup server computer alternatively executes the server function of the working server computer by virtually setting the address of the working server computer connected to the network as the address of the backup server computer. A packet converting means is provided for converting the packet transmitted and received between the working server computer and the client computer into the packet transmitted and received between the backup server computer and the client computer.