Patents by Inventor Keisuke Kabashima

Keisuke Kabashima 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).

  • Optical network, optical edge router, program thereof, cut through method, and edge router
    Patent number: 8532087
    Abstract: An optical network has: sections for establishing optical paths; a plurality of optical edge routers for connecting external IP networks to the optical network (1001); and a plurality of optical cross connects, for connecting the optical edge routers by the optical paths, having switching sections with respect to an optical pulse unit. In the optical network, each of the optical edge routers has both of: (1) an optical network control instance (INSp) for maintaining topology information in the optical network and switching/signaling the optical paths; and (2) an IP network instance (INSi) for maintaining a routing table in each of the external IP networks and activating routing protocols between the external IP networks and the IP network instance. By doing this, it is possible to realize a multi-layer cooperative function and provide highly safe optical networks, etc.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: September 10, 2013
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Hisashi Kojima, Takashi Kurimoto, Ichiro Inoue, Tomonori Takeda, Takashi Miyamura, Keisuke Kabashima, Nobuaki Matsuura, Michihiro Aoki, Shigeo Urushidani
  • Data transfer apparatus and data transfer system
    Patent number: 7797444
    Abstract: A data transfer apparatus and a data transfer system are provided that can reduce the cost of installing communication equipment compatible with each of several dissimilar communication protocols in one exchange office and can reduce the cost of constructing the network.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: September 14, 2010
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Keisuke Kabashima, Michihiro Aoki, Takashi Kurimoto, Takashi Miyamura, Masahiro Goshima, Nobuaki Matsuura, Shigeo Urushidani
  • Data transmission device and data transmission system
    Publication number: 20060168316
    Abstract: A data transfer apparatus and a data transfer system are provided that can reduce the cost of installing communication equipment compatible with each of several dissimilar communication protocols in one exchange office and can reduce the cost of constructing the network.
    Type: Application
    Filed: February 2, 2004
    Publication date: July 27, 2006
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Keisuke Kabashima, Michihiro Aoki, Takashi Kurimoto, Takashi Miyamura, Masahiro Goshima, Nobuaki Matsuura, Shigeo Urushidani