Patents by Inventor Nobuhiko Onizuka

Nobuhiko Onizuka 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).

  • Method and system for logical simulation of information processing system including logic circuit model and logic function model
    Patent number: 4918594
    Abstract: A logical simulation system for a data processor includes a logic circuit model constituting a part of logic of the data processor to be tested with basic logic elements capable of calculating operation processes in detail, a logic function model describing functional operations of the other logic of the data processor in terms of machine word instructions for executing functional operations of the other logic at a high speed, and a communication routine for performing data transfer between both the models and controlling the execution of instructions. The processings for executing individual instructions contained in a test program are shared between both the models through the medium of the communication routine.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: April 17, 1990
    Assignee: Hitachi, Ltd.
    Inventor: Nobuhiko Onizuka