Patents by Inventor Hayato Momma

Hayato Momma 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, detection method and monitoring method of network entity faults, and storage medium
    Patent number: 7136921
    Abstract: A monitor (102) receives a returned response message, and stores the state of the link directed to the NE that returned the message as a successful transmission, and then repeats the same operation at arbitrary intervals. When the monitor can not receive the response message after placing a certain interval, it stores the link as an unsuccessful transmission. At this point, if all the links for a particular NE are in the unsuccessful state, the monitor informs an NMS (151) of a fault in that NE. If the NE truly has the NE fault, other NEs that also have the links to that fault NE inform the NMS of the fault. Thereby the NMS itself does not need to do the monitoring. The NMS only collates fault information with topology information stored in a topology information storage (153) and can judge that a particular NE is out of communication and control.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: November 14, 2006
    Assignees: NEC Corporation, The Tokyo Electric Power Company, Incorporated
    Inventors: Ryota Motobayashi, Hayato Momma, Kazuhiko Azuma, Fumiyasu Hayakawa
  • Network system, detection method and monitoring method of network entity faults, and storage medium
    Publication number: 20030009556
    Abstract: A monitor (102) receives a returned response message, and stores the state of the link directed to the NE that returned the message as a successful transmission, and then repeats the same operation at arbitrary intervals. When the monitor can not receive the response message after placing a certain interval, it stores the link as an unsuccessful transmission. At this point, if all the links for a particular NE are in the unsuccessful state, the monitor informs an NMS (151) of a fault in that NE. If the NE truly has the NE fault, other NEs that also have the links to that fault NE inform the NMS of the fault. Thereby the NMS itself does not need to do the monitoring. The NMS only collates fault information with topology information stored in a topology information storage (153) and can judge that a particular NE is out of communication and control.
    Type: Application
    Filed: June 18, 2002
    Publication date: January 9, 2003
    Inventors: Ryota Motobayashi, Hayato Momma, Kazuhiko Azuma, Fumiyasu Hayakawa