Patents by Inventor Setsuo Futamura

Setsuo Futamura 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).

  • Method and apparatus of packet switching
    Patent number: 4507782
    Abstract: It is efficient to detect a data error, which is produced in a packet switching network, in a range between final users of data. A packet including data for detecting a data error is formed for a data unit made up of a series of data packets sent to a packet mode terminal, and send to the packet mode terminal. A data error is detected by the data for detecting a data error each time the above-mentioned series of data packets are received.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: March 26, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Koichi Kunimasa, Setsuo Futamura, Jun Okada