Patents by Inventor Mitsunori Fukutoku

Mitsunori Fukutoku 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).

  • Packet transmission method and packet transmission device
    Patent number: 8625588
    Abstract: A packet transfer method in a network apparatus that transfers packets is disclosed. In the packet transfer method, a sending side apparatus generates two copies of a send packet, provides a sequence number identifying the same sending sequence to each of the copied packets, provides an identifier corresponding to a send/receive pair to each of the copied packets to send the packets, and a receiving side apparatus receives each of the packets with two receiving units; recognizes the identifiers each corresponding to a send/receive pair; identifies packets having the same information and the sequence based on the sequence number when the identifiers are the same; selects one of the packets of the same sequence so as to send the packet downstream, and discards another packet, wherein, when only one of the packets of the same sequence arrives, the arriving packet is sent downstream.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 7, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Ippei Shake, Mitsunori Fukutoku, Wataru Imajyuku, Katsuhiro Shimano
  • PACKET TRANSMISSION METHOD AND PACKET TRANSMISSION DEVICE
    Publication number: 20110038373
    Abstract: A packet transfer method in a network apparatus that transfers packets is disclosed. In the packet transfer method, a sending side apparatus generates two copies of a send packet, provides a sequence number identifying the same sending sequence to each of the copied packets, provides an identifier corresponding to a send/receive pair to each of the copied packets to send the packets, and a receiving side apparatus receives each of the packets with two receiving units; recognizes the identifiers each corresponding to a send/receive pair; identifies packets having the same information and the sequence based on the sequence number when the identifiers are the same; selects one of the packets of the same sequence so as to send the packet downstream, and discards another packet, wherein, when only one of the packets of the same sequence arrives, the arriving packet is sent downstream.
    Type: Application
    Filed: October 28, 2010
    Publication date: February 17, 2011
    Applicant: NIPPON TELEGRAPH AND TELEPHONE CORP.
    Inventors: Ippei SHAKE, Mitsunori Fukutoku, Wataru Imajyuku, Katsuhiro Shimano
  • Packet transmission method and packet transmission device
    Patent number: 7869428
    Abstract: A packet transfer method in a network apparatus that transfers packets is disclosed. In the packet transfer method, a sending side apparatus generates two copies of a send packet, provides a sequence number identifying the same sending sequence to each of the copied packets, provides an identifier corresponding to a send/receive pair to each of the copied packets to send the packets, and a receiving side apparatus receives each of the packets with two receiving units; recognizes the identifiers each corresponding to a send/receive pair; identifies packets having the same information and the sequence based on the sequence number when the identifiers are the same; selects one of the packets of the same sequence so as to send the packet downstream, and discards another packet, wherein, when only one of the packets of the same sequence arrives, the arriving packet is sent downstream.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: January 11, 2011
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Ippei Shake, Mitsunori Fukutoku, Wataru Imajyuku, Katsuhiro Shimano
  • Packet Transmission Method and Packet Transmission Device
    Publication number: 20080279181
    Abstract: A packet transfer method in a network apparatus that transfers packets is disclosed. In the packet transfer method, a sending side apparatus generates two copies of a send packet, provides a sequence number identifying the same sending sequence to each of the copied packets, provides an identifier corresponding to a send/receive pair to each of the copied packets to send the packets, and a receiving side apparatus receives each of the packets with two receiving units; recognizes the identifiers each corresponding to a send/receive pair; identifies packets having the same information and the sequence based on the sequence number when the identifiers are the same; selects one of the packets of the same sequence so as to send the packet downstream, and discards another packet, wherein, when only one of the packets of the same sequence arrives, the arriving packet is sent downstream.
    Type: Application
    Filed: July 13, 2005
    Publication date: November 13, 2008
    Inventors: Ippei Shake, Mitsunori Fukutoku, Wataru Imajyuku, Katsuhiro Shimano