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:
Jul. 27, 2010
Filed:
Apr. 14, 2004
Masayuki Kumazawa, Yokohama, JP;
Taisuke Matsumoto, Yokohama, JP;
Shinkichi Ikeda, Yokohama, JP;
Hirokazu Kobayashi, Inagi, JP;
Makoto Funabiki, Yokohama, JP;
Toyoki Kawahara, Chofu, JP;
Masayuki Kumazawa, Yokohama, JP;
Taisuke Matsumoto, Yokohama, JP;
Shinkichi Ikeda, Yokohama, JP;
Hirokazu Kobayashi, Inagi, JP;
Makoto Funabiki, Yokohama, JP;
Toyoki Kawahara, Chofu, JP;
Panasonic Corporation, Osaka, JP;
Abstract
When the routing function of router becomes disabled, a routing stop message is multicast to all terminals and another router in a LAN. If another router can provide the routing function, a routing start message is multicast to all terminals and the other router in the LAN. This method allows the terminals in the LAN to switch the default router at a predetermined timing according to both messages, thus minimizing the default router switching delay time and the packet loss.