Patents by Inventor Kuniyuki Hatakeyama

Kuniyuki Hatakeyama 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).

  • Connection recovery device, method and computer-readable medium storing therein processing program
    Patent number: 7974186
    Abstract: A connection information takeover unit in an active communication processing apparatus in the system sends connection information and a transmission sequence number of each data to be transmitted to a standby connection recovery device when a connection is established, and a connection information takeover unit in a standby communication processing apparatus retains the connection information and the latest transmission sequence number in a connection information storing unit. A dummy data sending unit of the communication processing apparatus which is switched to active because a failover occurred sends dummy data to a client, and if a transmission sequence number of a reply packet for the dummy data matches with the transmission sequence number in the connection information storing unit, a connection continuity determining unit notifies a communication processing unit that connection can be continued.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: July 5, 2011
    Assignee: Fujitsu Limited
    Inventors: Takeo Yonezawa, Kuniyuki Hatakeyama
  • Connection recovery device, method and computer-readable medium storing therein processing program
    Publication number: 20100014418
    Abstract: A connection information takeover unit in an active communication processing apparatus in the system sends connection information and a transmission sequence number of each data to be transmitted to a standby connection recovery device when a connection is established, and a connection information takeover unit in a standby communication processing apparatus retains the connection information and the latest transmission sequence number in a connection information storing unit. A dummy data sending unit of the communication processing apparatus which is switched to active because a failover occurred sends dummy data to a client, and if a transmission sequence number of a reply packet for the dummy data matches with the transmission sequence number in the connection information storing unit, a connection continuity determining unit notifies a communication processing unit that connection can be continued.
    Type: Application
    Filed: July 16, 2009
    Publication date: January 21, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Takeo YONEZAWA, Kuniyuki HATAKEYAMA
  • RECORDING MEDIUM HAVING RECEPTION PROGRAM RECORDED THEREIN, RECORDING MEDIUM HAVING TRANSMISSION PROGRAM RECORDED THEREIN, TRANSMISSION/RECEPTION SYSTEM AND TRANSMISSION/RECEPTION METHOD
    Publication number: 20080205406
    Abstract: The reception program making a transmission-destination computer control the processing of receiving a packet having the same content which is transmitted from a transmission-source computer through plural routes. The reception program making the transmission-destination computer compare the transmission order information of the packets. If the packet is duplication, the reception program making the transmission-destination computer neglect the duplicate packet. If the packet is lack, the reception program making the transmission-destination computer requests to resend the lack packet to the transmission-source computer.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 28, 2008
    Applicant: FUJITSU LIMITED
    Inventor: Kuniyuki Hatakeyama