Patents by Inventor Eiji Omata

Eiji Omata 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 topology configuring method and node
    Patent number: 7496051
    Abstract: A node includes a manager configured to manage the hash value of the node and the hash values of adjacent nodes, and a calculator configured to calculate an insertion position of a new entry node in a ring network, based on the hash value of the new entry node, the hash value of the node and the hash values of the adjacent nodes.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: February 24, 2009
    Assignee: NTT DoCoMo, Inc.
    Inventors: Haoyi Wan, Norihiro Ishikawa, Hiromitsu Sumino, Takeshi Kato, Eiji Omata
  • Management node deice, node device, network configuration management system, network configuration management method, node device control method, management node device control method
    Publication number: 20050254429
    Abstract: There is installed a special management node to efficiently perform network configuration management. When a node starts communication with another node, the node sends a request for node position information about the communication counterpart node to a management node. Upon receiving the node position information request, the management node references a network configuration information table to calculate information about a route from the node to the communication counterpart node. The management node notifies the calculated route information. By utilizing the route information, the node can communicate with the communication counterpart node. Each node notifies node-to-node connection information, information about links with adjacent nodes, to the management node as necessary.
    Type: Application
    Filed: June 3, 2003
    Publication date: November 17, 2005
    Inventors: Takeshi Kato, Norihiro Ishikawa, Hiromitsu Sumino, Hideharu Suzuki, Jodetoshi Ueno, Eiji Omata
  • Network topology configuring method and node
    Publication number: 20050237948
    Abstract: A node includes a manager configured to manage the hash value of the node and the hash values of adjacent nodes, and a calculator configured to calculate an insertion position of a new entry node in a ring network, based on the hash value of the new entry node, the hash value of the node and the hash values of the adjacent nodes.
    Type: Application
    Filed: January 10, 2005
    Publication date: October 27, 2005
    Applicant: NTT DoCoMo, Inc.
    Inventors: Haoyi Wan, Norihiro Ishikawa, Hiromitsu Sumino, Takeshi Kato, Eiji Omata