Patents by Inventor Takayuki D. OKAMASU

Takayuki D. OKAMASU 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).

  • Method and device for time-synchronization in ad hoc network
    Patent number: 9585113
    Abstract: A method and a device perform time-synchronization with an ad hoc network configured by a plurality of nodes. The method includes: transmitting a time-synchronization request frame including an address of one of the plurality of nodes which belong to the ad hoc network to one of the plurality of nodes having a function of receiving the time-synchronization request frame and transmitting a time-synchronization reply frame including time-synchronization information; receiving the time-synchronization reply frame including the time-synchronization information from one of the plurality of nodes which receive the time-synchronization request frame; and performing time-synchronization with one of the plurality of nodes using the time-synchronization information included in the time-synchronization reply frame.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: February 28, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Yayoi Nomura, Takayuki D Okamasu, Yasuhiro Kurogi, Yuichi Inao, Kenji Yamada, Syunsuke Koga
  • METHOD AND DEVICE FOR TIME-SYNCHRONIZATION IN AD HOC NETWORK
    Publication number: 20140029603
    Abstract: A method and a device perform time-synchronization with an ad hoc network configured by a plurality of nodes. The method includes: transmitting a time-synchronization request frame including an address of one of the plurality of nodes which belong to the ad hoc network to one of the plurality of nodes having a function of receiving the time-synchronization request frame and transmitting a time-synchronization reply frame including time-synchronization information; receiving the time-synchronization reply frame including the time-synchronization information from one of the plurality of nodes which receive the time-synchronization request frame; and performing time-synchronization with one of the plurality of nodes using the time-synchronization information included in the time-synchronization reply frame.
    Type: Application
    Filed: September 26, 2013
    Publication date: January 30, 2014
    Applicant: FUJITSU LIMITED
    Inventors: Yayoi NOMURA, Takayuki D. OKAMASU, Yasuhiro KUROGI, Yuichi INAO, Kenji YAMADA, Syunsuke KOGA