Patents by Inventor Ryoichi Mutou

Ryoichi Mutou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Router, frame forwarding method, and lower layer frame virtual forwarding system
    Publication number: 20050169270
    Abstract: In an MPLS network, multicast, broadcast and address learning belonging to the layer 2 functions are realized. An ingress router comprises a frame receiving unit, a determining unit, a first frame transmitting unit, a physical address table for multicast, a label switching unit, a tunnel label table, a VCID giving unit, a L2 header creating unit and a second frame transmitting unit. The load on the network is suppressed, the band is efficiently used, and wasteful frame duplication and frame forwarding between edge routers are avoided.
    Type: Application
    Filed: March 29, 2005
    Publication date: August 4, 2005
    Inventors: Ryoichi Mutou, Masato Okuda, Atsushi Kitada