Patents by Inventor Tetsuo Yamaoka, legal representative

Tetsuo Yamaoka, legal representative 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).

  • Patent number: 8094636
    Abstract: Provided is a wireless communication system, comprising: a base station providing communication by a plurality of communication methods; and a mobile node for communicating with the base station by the plurality of communication methods. The mobile node calculates a first distance between a wireless LAN access point and the mobile node; and judges whether the communication by the wireless LAN is possible by comparing the calculated first distance and a second distance that is a distance within which communication by a wireless LAN is available.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: January 10, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Ryouji Yamaoka, Tetsuo Yamaoka, legal representative, Junji Yamamoto, Seishi Hanaoka, Toshiaki Suzuki, Masashi Yano
  • Patent number: 8073462
    Abstract: There is provided a communication system including a base station and a terminal which communicates with the base station through a plurality of communication methods. The base station is configured to predict a position of the terminal; select a communication method optimal for the terminal based on the predicted position; and notify the terminal of the selected communication method. The terminal is configured to measure the position of the terminal by prediction which is similar to the position prediction by the base station; and select the communication method notified from the base station in the case of which a difference between a result of the position prediction and a result of the measurement is smaller than a predetermined threshold.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: December 6, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Junji Yamamoto, Seishi Hanaoka, Ryouji Yamaoka, Tetsuo Yamaoka, legal representative