Patents by Inventor Hitoshi Yamane

Hitoshi Yamane 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).

  • Publication number: 20050033457
    Abstract: A simulation aid tool uses a variable extracting part to analyze a ladder program to be tested and extracts variables used in the ladder program. A test input sequence managing part manages a test input sequence describing a table that correlates command, variable name and normal input value of each of input variables in the extracted variables in the order of test input. A test input ladder generating part generates a test input ladder program according to the test input sequence created by the test input sequence managing part. A ladder program verification system includes, connected by a network, a virtual I/O which is a programmable controller for generating virtual I/O having the test input ladder program generated by such a simulation aid tool installed and a programmable controller for executing a test target program which is a ladder program to be tested.
    Type: Application
    Filed: July 23, 2004
    Publication date: February 10, 2005
    Inventor: Hitoshi Yamane