Patents by Inventor Kazuyuki Tasaka

Kazuyuki Tasaka 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).

  • Load balance server and method for balancing load of presence information
    Patent number: 7885191
    Abstract: A load balance server has a first database for recording a list of identifiers of the presence servers, a second database for recording a subscription message receiving rate, an entry retrieval means for selecting a presence server that the subscription message receiving rate is lowest, in presence servers included in the list of the entry based on the presence information, a presence server selecting means for selecting an additional presence server whichever subscription message receiving rate is lower than predetermined threshold Ts, when the subscription message receiving rate in the selected presence server is higher than predetermined threshold Ts, and a message sending/receiving control means for sending the public message to the selected presence server.
    Type: Grant
    Filed: June 19, 2008
    Date of Patent: February 8, 2011
    Assignee: KDDI R&D Laboratories Inc.
    Inventors: Manabu Isomura, Naoki Imai, Kazuyuki Tasaka, Akira Idoue
  • LOAD BALANCE SERVER AND METHOD FOR BALANCING LOAD OF PRESENCE INFORMATION
    Publication number: 20090010163
    Abstract: A load balance server has a first database for recording a list of identifiers of the presence servers, a second database for recording a subscription message receiving rate, an entry retrieval means for selecting a presence server that the subscription message receiving rate is lowest, in presence servers included in the list of the entry based on the presence information, a presence server selecting means for selecting an additional presence server whichever subscription message receiving rate is lower than predetermined threshold Ts, when the subscription message receiving rate in the selected presence server is higher than predetermined threshold Ts, and a message sending/receiving control means for sending the public message to the selected presence server.
    Type: Application
    Filed: June 19, 2008
    Publication date: January 8, 2009
    Applicant: KDDI R&D LABORATORIES INC.
    Inventors: Manabu ISOMURA, Naoki IMAI, Kazuyuki TASAKA, Akira IDOUE