Patents by Inventor Hideyuki Sotobayashi

Hideyuki Sotobayashi 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: 8041214
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: October 18, 2011
    Assignee: National Institute of Information and Communications Technology
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Publication number: 20110081149
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Application
    Filed: December 15, 2010
    Publication date: April 7, 2011
    Applicant: Natnl. Instit. of Info. and Communications Tech.
    Inventors: Naoya WADA, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Patent number: 7899327
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 1, 2011
    Assignee: National Institute of Information and Communications Technology
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Patent number: 7873275
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: January 18, 2011
    Assignee: National Institute of Information and Communications Technology
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Patent number: 7228073
    Abstract: An optical signal transmission device for transmitting phase information of optical signals is provided. The device includes a multiplexing formatted optical signal generator arranged to generate multiplexing formatted optical signals. The device also includes an optical phase generator arranged to receive the multiplexing formatted optical signals. An optical information transmission method for transmitting optical signal information including phase information is also provided. The method includes receiving multiplexing formatted optical signals generated by a multiplexing formatted optical signal generator at an optical phase generator. The method also includes phase conjugating the multiplexing formatted optical signals by means of four wave mixing (FWM).
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: June 5, 2007
    Assignee: National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Jun Inoue, Hideyuki Sotobayashi, Wataru Chujo, Hitoshi Kawaguchi
  • Publication number: 20070098404
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 3, 2007
    Applicant: Natnl. Instit. of info. and Communications Tech.
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Publication number: 20070097954
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Application
    Filed: December 20, 2006
    Publication date: May 3, 2007
    Applicant: Natnl. Instit. of Info. and Communications Tech.
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Patent number: 7177544
    Abstract: A photonic network packet routing method includes the steps of optically encoding destination address information attached to an IP packet using light attributes, discriminating the encoded address information of the IP packet by optical correlation processing, switching to an output path for the IP packet based on a result of the discrimination, and outputting the IP packet labeled with prescribed address information on the output path selected by the switching step.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: February 13, 2007
    Assignee: National Institute of Information and Communications Technology
    Inventors: Naoya Wada, Hideyuki Sotobayashi, Ken-ichi Kitayama
  • Patent number: 6912338
    Abstract: An optical signal noise reduction device and method, where optical control signals are input into a first ring optical fiber, so that optical signals propagates clockwise and counter-clockwise in the optical fiber, with optical control signals propagating either clockwise or counter-clockwise in the first ring optical fiber. Optica signals propagating in the same direction as the optical control signals are affected with cross phase modulation with the optical control signals, while optical signals propagating in the opposite direction as the optical control signals are not affected with cross phase modulation with the optical control signals. The two kinds of the optical signals are then interfered with each other at the optical output to reduce noise of the optical.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: June 28, 2005
    Assignee: National Institute of Information and Communications Technology
    Inventors: Hideyuki Sotobayashi, Wataru Chujo
  • Publication number: 20050008366
    Abstract: An optical signal transmission device for transmitting phase information of optical signals is provided. The device includes a multiplexing formatted optical signal generator arranged to generate multiplexing formatted optical signals. The device also includes an optical phase generator arranged to receive the multiplexing formatted optical signals. An optical information transmission method for transmitting optical signal information including phase information is also provided. The method includes receiving multiplexing formatted optical signals generated by a multiplexing formatted optical signal generator at an optical phase generator. The method also includes phase conjugating the multiplexing formatted optical signals by means of four wave mixing (FWM).
    Type: Application
    Filed: July 9, 2003
    Publication date: January 13, 2005
    Inventors: Jun Inoue, Hideyuki Sotobayashi, Wataru Chujo, Hitoshi Kawaguchi
  • Publication number: 20030081890
    Abstract: An object is to reduce the noise of optical signals in optical processing. The optical signals and optical control signals are input into a first ring optical fiber, so that the optical signals propagates clockwise and counter-clockwise in the optical fiber, and the optical control signals propagates either clockwise or counter-clockwise in the first ring optical fiber. The optical signals propagating in the same direction with the optical control signals are affected with cross phase modulation with the optical control signals. The optical signals propagating in the different direction with the optical control signals are not affected with cross phase modulation with the optical control signals. The two kinds of the optical signals are interfered each other at the optical output means to reduce the noise of the optical signals.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 1, 2003
    Applicant: Communications Research Laboratory, Independent Administrative Institution
    Inventors: Hideyuki Sotobayashi, Wataru Chujo