Patents by Inventor Kawana Keiichi

Kawana Keiichi 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 having a reduced switching matrix
    Patent number: 5153463
    Abstract: A programmable wiring is provided for connecting wiring elements in a channel region with each other in a programmable manner, the programmable wiring including programmable switches of the number less than the number of all combinations in the direction of connection in a switching matrix for connecting the wiring elements in accordance with a program. The number of programmable switches for connecting the respective wiring elements with each other in a straight direction is less than the number of programmable switches for connecting the respective wiring elements in a turn direction, a ratio of both numbers being preferably selected to be 0.2:1 to 0.5:1.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: October 6, 1992
    Assignee: Kawasaki Steel Corporation
    Inventor: Kawana Keiichi