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:
May. 26, 1998
Filed:
Mar. 05, 1996
Applicant:
Inventors:
Wendell L Little, Denton, TX (US);
Matthew K Adams, Dallas, TX (US);
David A Bunsey, Jr, Dallas, TX (US);
Assignee:
Dallas Semiconductor Corp, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
39518306 ; 39518501 ; 39518401 ; 39518301 ; 364D / ;
Abstract
A hardware circuit for verifying the execution of software is disclosed wherein the circuit compares a stored value with another value that is stored at at least one predetermined time in the course of program execution. If the two values correspond in some predetermined fashion then it is verified with a level of certainty that the program executed the program steps at or near the predetermined times.