Patents by Inventor Hironobu FUKUURA

Hironobu FUKUURA 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).

  • Optical communication device and signal adjusting method
    Patent number: 8891966
    Abstract: An optical packet switching device causes branching of an optical packet that is input to an optical switch and detects a synchronization pattern having a predetermined number of bits from the branched optical packet. Then, the optical packet switching device calculates a synchronization point indicating a location of the synchronization pattern with respect to a detection timing and controls, in accordance with the calculated synchronization point, a delay amount of a delay element that delays an optical packet ON signal that is output to the optical switch.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: November 18, 2014
    Assignees: Fujitsu Limited, Fujitsu Telecom Networks Limited
    Inventors: Tatsuya Toyozumi, Koji Matsunaga, Yasuo Tanaka, Hironobu Fukuura, Wataru Kawasaki, Shota Mori
  • OPTICAL COMMUNICATION DEVICE AND SIGNAL ADJUSTING METHOD
    Publication number: 20120315039
    Abstract: An optical packet switching device causes branching of an optical packet that is input to an optical switch and detects a synchronization pattern having a predetermined number of bits from the branched optical packet. Then, the optical packet switching device calculates a synchronization point indicating a location of the synchronization pattern with respect to a detection timing and controls, in accordance with the calculated synchronization point, a delay amount of a delay element that delays an optical packet ON signal that is output to the optical switch.
    Type: Application
    Filed: April 17, 2012
    Publication date: December 13, 2012
    Applicants: FUJITSU TELECOM NETWORKS LIMITED, FUJITSU LIMITED
    Inventors: Tatsuya TOYOZUMI, Koji MATSUNAGA, Yasuo TANAKA, Hironobu FUKUURA, Wataru KAWASAKI, Shota MORI