The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 1999
Filed:
Mar. 13, 1997
Scott Lee Linke, Flora, IN (US);
Everett Ray Lumpkin, Galveston, IN (US);
Kirk Alan Bailey, Westfield, IN (US);
Jill Gosma Hersberger, Kokomo, IN (US);
Delco Electronics Corporation, Kokomo, IN;
Abstract
The present invention relates to a method and apparatus for verifying the correct performance of software on an electrical system by use of a cycle-based simulator. More specifically, it relates to an apparatus and method for simulating an electrical interconnection between two electronic subsystems, or modules, within a cycle based simulator. Two separate devices, a hardware output's driver and a hardware input's receiver, are characterized as one type of simulated object, a node, and the interconnection between the two devices as a second type of simulated object, a wire. The activity of output nodes is limited to placing signal values on the wire. Input nodes have a characteristic behavior in response to the information from output nodes. The wire is enhanced by storage and comparison functions that allow the comparison between new and current values of output signals as well as identification of the cycle associated with a particular change.