Patents by Inventor Norihiko Sawai

Norihiko Sawai 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).

  • Control apparatus for sequence control of a die casting machine
    Patent number: 6772235
    Abstract: A data input/output apparatus capable of decreasing a number of wires between a sequence controller and a control panel and not requiring a change of the number of the wires even if the number of input/output points of data is increased, provided with switches and light emitting diodes, a plurality of wires which can be directly connected to buses for transmission of data between an I/O unit and a CPU, a plurality of electronic switches connected to the buses by wires, outputting signals in accordance with levels of signals from the buses to the light emitting diodes based on input of a selection signal or outputting signals in accordance with levels of signals input from the switches to the buses, and address decoders connected to the buses by the wires and outputting selection signals to the corresponding electronic switches in accordance with a request from the CPU.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 3, 2004
    Assignee: Toshiba Kikai Kabushiki Kaisha
    Inventors: Norihiko Sawai, Toshinori Nakamoto
  • Data input/output apparatus and control apparatus of die casting machine
    Publication number: 20010054117
    Abstract: A data input/output apparatus capable of decreasing a number of wires between a sequence controller and a control panel and not requiring a change of the number of the wires even if the number of input/output points of data is increased, provided with switches and light emitting diodes, a plurality of wires which can be directly connected to buses for transmission of data between an I/O unit and a CPU, a plurality of electronic switches connected to the buses by wires, outputting signals in accordance with levels of signals from the buses to the light emitting diodes based on input of a selection signal or outputting signals in accordance with levels of signals input from the switches to the buses, and address decoders connected to the buses by the wires and outputting selection signals to the corresponding electronic switches in accordance with a request from the CPU.
    Type: Application
    Filed: February 27, 2001
    Publication date: December 20, 2001
    Inventors: Norihiko Sawai, Toshinori Nakamoto