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:
Jun. 17, 2008
Filed:
Jul. 26, 2004
Migaku Ota, Yokohama, JP;
Hiroaki Miyata, Yokohama, JP;
Jun Nakajima, Yokohama, JP;
Hitachi Communication Technologies, Ltd., Tokyo, JP;
Abstract
An LAC manages multicast destinations, and forms and distributes copies of the multicast packets. An L2TP tunnel and an L2TP session are formed between LAC-and LNS-, and LNS-is connected to network NWsuch as the Internet. Data is transferred between a subscriber and the network through the L2TP connection. LNS-and sever Sare connected through network NWwhich has routers. A packet transfer apparatus enables LAC-to manage subscriber information and to form and distribute copies of the packets to the subscribers when server Son network NWdistributes multicast packets of a program or the like to the subscribers.