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:
Jul. 02, 2002
Filed:
May. 10, 1999
Terry L. Fruehling, Kokomo, IN (US);
Charles I. Duncan, Kokomo, IN (US);
Troy L. Helm, Kokomo, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A method and circuit for determining the health of a microcontroller is provided having a circuit that includes a bus having data streams thereon. A first CPU is coupled to the bus. A linear feedback shift register is coupled to the bus and generates a signature in response to the data streams. A memory is coupled to the bus. The memory is utilized by the first CPU. A controller is coupled to the register for controlling the reading of the data streams. The register generates a second signature in response to the data stream. The controller compares the reference signature and the second signature. The controller generates a fault signal when the reference signature is unequal to the second signature.