Patents by Inventor Syunji Fujikawa

Syunji Fujikawa 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).

  • Two wires time sharing two way full duplex communication system
    Patent number: 3967058
    Abstract: The system according to the present invention carries out two way communication of a digital signal between a master terminal having its own clock source and a slave terminal, which is synchronized with the clock of the master terminal. The master terminal sends a digital signal originating from its own clock to the slave terminal and the slave terminal in turn sends a digital signal based on a clock signal which is derived from the received digital pulse from the master terminal.
    Type: Grant
    Filed: November 11, 1974
    Date of Patent: June 29, 1976
    Assignee: Fujitsu Ltd.
    Inventors: Takao Moriya, Kazuo Murano, Syunji Fujikawa