Patents by Inventor Tsutomu Aoshima

Tsutomu Aoshima 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 device, packet control method based on prefix management, and program
    Patent number: 10291435
    Abstract: To prevent a packet including a prefix that should not be used from being forwarded. A router device 1 includes a prefix management unit 5 for creating a filtering rule including an indication of passage or block of a packet from a node 3 based on a prefix distributed from a prefix distributing device 2 and a prefix in a source IP address received from the node 3, and a filter unit 6 for passing or blocking the packet from the node according to the filtering rule created by the prefix management unit 5.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: May 14, 2019
    Assignee: NEC Platforms, Ltd.
    Inventor: Tsutomu Aoshima
  • Home gateway apparatus and packet transfer method
    Patent number: 9866524
    Abstract: In order to provide a home gateway apparatus capable of smoothly executing transfer processing while ensuring security, when transferring a packet between a node (102) and an external network (101), the home gateway apparatus (100) rewrites a first address to a second address, the first address being in EUI-64 format for use as a transmission source address by the node at the time of transmission (S206); and upon receiving a packet having the second address as a destination address from the external network, rewrites the destination address of the received packet to the first address (S207).
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: January 9, 2018
    Assignee: NEC Platforms, Ltd.
    Inventor: Tsutomu Aoshima
  • HOME GATEWAY APPARATUS AND PACKET TRANSFER METHOD
    Publication number: 20160065536
    Abstract: In order to provide a home gateway apparatus capable of smoothly executing transfer processing while ensuring security, when transferring a packet between a node (102) and an external network (101), the home gateway apparatus (100) rewrites a first address to a second address, the first address being in EUI-64 format for use as a transmission source address by the node at the time of transmission (S206); and upon receiving a packet having the second address as a destination address from the external network, rewrites the destination address of the received packet to the first address (S207).
    Type: Application
    Filed: March 26, 2014
    Publication date: March 3, 2016
    Applicant: NEC PLATFORMS, LTD.
    Inventor: Tsutomu AOSHIMA
  • ROUTER DEVICE, PACKET CONTROL METHOD BASED ON PREFIX MANAGEMENT, AND PROGRAM
    Publication number: 20130259061
    Abstract: To prevent a packet including a prefix that should not be used from being forwarded. A router device 1 includes a prefix management unit 5 for creating a filtering rule including an indication of passage or block of a packet from a node 3 based on a prefix distributed from a prefix distributing device 2 and a prefix in a source IP address received from the node 3, and a filter unit 6 for passing or blocking the packet from the node according to the filtering rule created by the prefix management unit 5.
    Type: Application
    Filed: February 16, 2012
    Publication date: October 3, 2013
    Applicant: NEC ACCESS TECHNICA, LTD.
    Inventor: Tsutomu Aoshima