Patents by Inventor Takeshi Yamakita

Takeshi Yamakita 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 bus transmission system
    Patent number: 5363229
    Abstract: An optical bus transmission system wherein, even in the presence of an obstacle, a stable transmission is ensured if a plurality of transceivers are provided in the home station, or, if the subsidiary stations are equipped with a relay function and the transmission time is controlled to generate a vacant transmission time among the subsidiary stations, a more stable transmission is achieved, and, if the level of the light of the subsidiary stations is arranged to be controlled by the command information from the home station, the transmission becomes stable even when a obstacle is present.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: November 8, 1994
    Assignee: Matsushita Electrical Industrial Co., Ltd.
    Inventors: Tutomu Sakurai, Takeshi Yamakita