Patents by Inventor Daiki Matsuyama

Daiki Matsuyama 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).

  • Transmission device and method of setting transmission parameter
    Patent number: 11664904
    Abstract: A transmission device includes: a memory; and a processor coupled to the memory and configured to: transmit or receive an optical signal; filter an electrical electric field signal that indicates electric field information of the optical signal; calculate a transmission characteristic of filtering of the electric field signal and set the transmission characteristic in the filter on a basis of a narrowing amount of a wavelength band of the optical signal transmitted through a transmission line and a narrowing amount of the wavelength band when a state of the transmission line is changed on a basis of transmission line information regarding the transmission line of the optical signal; and set a transmission parameter of the optical signal according to quality of the electric field signal filtered by the filter.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: May 30, 2023
    Assignee: FUJITSU LIMITED
    Inventors: Shoichiro Oda, Daijiro Tanaka, Kenji Ota, Takafumi Kusumi, Daiki Matsuyama
  • TRANSMISSION DEVICE AND METHOD OF SETTING TRANSMISSION PARAMETER
    Publication number: 20220224417
    Abstract: A transmission device includes: a memory; and a processor coupled to the memory and configured to: transmit or receive an optical signal; filter an electrical electric field signal that indicates electric field information of the optical signal; calculate a transmission characteristic of filtering of the electric field signal and set the transmission characteristic in the filter on a basis of a narrowing amount of a wavelength band of the optical signal transmitted through a transmission line and a narrowing amount of the wavelength band when a state of the transmission line is changed on a basis of transmission line information regarding the transmission line of the optical signal; and set a transmission parameter of the optical signal according to quality of the electric field signal filtered by the filter.
    Type: Application
    Filed: November 1, 2021
    Publication date: July 14, 2022
    Applicant: FUJITSU LIMITED
    Inventors: Shoichiro Oda, Daijiro Tanaka, Kenji Ota, Takafumi Kusumi, Daiki Matsuyama