Patents by Inventor Masao KIZAWA

Masao KIZAWA 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).

  • Network system and network apparatus
    Patent number: 8670444
    Abstract: In a virtual network apparatus, even when a fault occurs on a private line connecting plural physical network apparatuses to communicate a control signal, the redundancy is maintained, and the lower forwarding capability is prevented. In this network system, a control signal for virtualization to be transmitted and received between plural physical network apparatuses is relayed via a unit spanning LA connecting each physical network apparatus and an adjacent network apparatus in the adjacent network apparatus. Thereby, even when a fault occurs in the private line, it is possible to continue to communicate the control signal between the physical network apparatuses and continuously operate the virtual network apparatus.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: March 11, 2014
    Assignee: Alaxala Networks Corporation
    Inventors: Masao Kizawa, Masaya Arai, Shinji Nozaki
  • NETWORK SYSTEM AND NETWORK APPARATUS
    Publication number: 20110292931
    Abstract: In a virtual network apparatus, even when a fault occurs on a private line connecting plural physical network apparatuses to communicate a control signal, the redundancy is maintained, and the lower forwarding capability is prevented. In this network system, a control signal for virtualization to be transmitted and received between plural physical network apparatuses is relayed via a unit spanning LA connecting each physical network apparatus and an adjacent network apparatus in the adjacent network apparatus. Thereby, even when a fault occurs in the private line, it is possible to continue to communicate the control signal between the physical network apparatuses and continuously operate the virtual network apparatus.
    Type: Application
    Filed: May 26, 2011
    Publication date: December 1, 2011
    Applicant: ALAXALA NETWORKS CORPORATION
    Inventors: Masao KIZAWA, Masaya ARAI, Shinji NOZAKI