Patents by Inventor Hisayoshi Sugiyama

Hisayoshi Sugiyama 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).

  • Digital signal transmitting system
    Patent number: 4787085
    Abstract: A digital signal transmitting system includes a plurality of digital signal reproducers, each outputting a digital data signal to be time-division multiplexed; a digital signal multiplexer supplied with a frame synchronizing signal, a service bit signal and the output digital signals from the reproducers and for producing a block data signal including the frame synchronizing signal, the service bit signal and a plurality of slot data bits arranged with the digital data signals, each one bit within a multiple-frame, in which the service bit signal is indicative of the transmission mode and the slot data associated with each of the plurality of digital data signals being transmitted.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: November 22, 1988
    Assignees: Nippon Telegraph and Telephone Corporation, Sony Corporation
    Inventors: Kohichi Suto, Hisayoshi Sugiyama, Akira Sakamoto, Takeshi Fukami, Toshiro Terauchi, Masakatsu Toyoshima