Patents by Inventor Toichi Kudo

Toichi Kudo 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).

  • Arithmetic logic unit of a sequence controller
    Patent number: 4621317
    Abstract: An arithmetic logic unit for a stored program sequence controller stores a program equivalent to a relay sequence in a program memory and executes sequence control in accordance with the stored program. A first push-down storage register for sequentially storing logical operation results at branch start points of the relay sequence and a second push-down storage register for sequentially storing logical operation results for branches connected to the branch points based on the logical operation results stored in the first push-down storage register are provided. The arithmetic logic unit carries out the operations based on the logical operation results stored in the first and second push-down storage registers.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: November 4, 1986
    Assignees: Hitachi, Ltd., Nissan Motor Co., Ltd.
    Inventors: Toichi Kudo, Takasi Abe, Seiichiro Ogawa