Patents by Inventor Toru Imanaka

Toru Imanaka 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).

  • Ethernet communication redundancy method
    Patent number: 6282669
    Abstract: In a redundancy method for Ethernet communication between a plurality of nodes constituting a distributed control system, the nodes are connected to each other in a duplex state through first and second Ethernet communication lines which are independent of each other. A node on the transmission side transmits identical data to both the first and second Ethernet communication lines. A node on the reception side determines one of the identical data received from the node on the transmission side through the first and second Ethernet communication lines which has arrived first as reception data.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: August 28, 2001
    Assignee: Yamatake-Honeywell Co., Ltd.
    Inventors: Toru Imanaka, Yumiko Otsuka