Patents by Inventor Keiji Shibata

Keiji Shibata 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).

  • Programmable logic device with circuit portions common to both configuration and use circuits
    Patent number: 5282163
    Abstract: In a programmable logic device having a memory circuit for storing circuit configuration data and a logic gate block for realizing a logic circuit desired by a user on the basis of the circuit configuration data written into the memory circuit, a switching circuit is provided for controlling at least a part of a circuit for writing the circuit configuration data into the memory circuit so as to be utilized as a part of the logic circuit desired by the user after the circuit configuration.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: January 25, 1994
    Assignee: Kawasaki Steel Corporation
    Inventor: Keiji Shibata