Patents by Inventor Katsunori MURASE

Katsunori MURASE 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).

  • Frame transfer apparatus and frame transfer method
    Patent number: 8565097
    Abstract: It is intended to provide a frame transfer apparatus for transferring an LLDP frame to reduce a traffic load of the LLDP frame periodically sent for survival confirmation. The frame transfer apparatus within a network sends the LLDP frame by converting a TTL of the LLDP frame to be transferred to its maximum value of 65535. Also, the frame transfer apparatus makes the survival confirmation for a terminal, and sends as proxy the LLDP frame in which the TTL is set to 0, in place of the terminal, at a moment of expiration of the TTL, whereby the disconnection of the terminal from the network is appropriately notified to the other terminals. Thereby, the load of the LLDP frame periodically sent for survival confirmation within the network can be reduced.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: October 22, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Shin Nishikawa, Takanori Yaginuma, Shinichiro Saito, Katsunori Murase, Hisaya Tanaka
  • FRAME TRANSFER APPARATUS AND FRAME TRANSFER METHOD
    Publication number: 20110249562
    Abstract: It is intended to provide a frame transfer apparatus for transferring an LLDP frame to reduce a traffic load of the LLDP frame periodically sent for survival confirmation. The frame transfer apparatus within a network sends the LLDP frame by converting a TTL of the LLDP frame to be transferred to its maximum value of 65535. Also, the frame transfer apparatus makes the survival confirmation for a terminal, and sends as proxy the LLDP frame in which the TTL is set to 0, in place of the terminal, at a moment of expiration of the TTL, whereby the disconnection of the terminal from the network is appropriately notified to the other terminals. Thereby, the load of the LLDP frame periodically sent for survival confirmation within the network can be reduced.
    Type: Application
    Filed: March 24, 2011
    Publication date: October 13, 2011
    Inventors: Shin NISHIKAWA, Takanori YAGINUMA, Shinichiro SAITO, Katsunori MURASE, Hisaya TANAKA