Patents by Inventor SUMIHIKO ARIMA

SUMIHIKO ARIMA 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).

  • Apparatus for switching between multiple servers in a web-based system
    Patent number: 9516042
    Abstract: A main server and a mirror server hold the same content. A server switching apparatus sets only one of the web servers to be active. In the case where the mirror server has not been attacked in an immediately-previous operating period, the server switching apparatus switches from the main server to the mirror server. Upon receiving a request from a client computer, the server switching apparatus transfers the request to the active web server. The active web server then sends the requested content.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: December 6, 2016
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Hisashi Sakamaki, Kiyoyuki Hattori, Yoshifumi Okamoto, Takashi Yotsuyanagi, Sumihiko Arima
  • APPARATUS FOR SWITCHING BETWEEN MULTIPLE SERVERS IN A WEB-BASED SYSTEM
    Publication number: 20150113647
    Abstract: A main server and a mirror server hold the same content. A server switching apparatus sets only one of the web servers to be active. In the case where the mirror server has not been attacked in an immediately-previous operating period, the server switching apparatus switches from the main server to the mirror server. Upon receiving a request from a client computer, the server switching apparatus transfers the request to the active web server. The active web server then sends the requested content.
    Type: Application
    Filed: October 20, 2014
    Publication date: April 23, 2015
    Inventors: HISASHI SAKAMAKI, KIYOYUKI HATTORI, YOSHIFUMI OKAMOTO, TAKASHI YOTSUYANAGI, SUMIHIKO ARIMA