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. 23, 2003
Filed:
May. 10, 1999
Applicant:
Inventors:
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/122 ; G06F 1/200 ; G01R 3/13187 ;
U.S. Cl.
CPC ...
G06F 1/122 ; G06F 1/200 ; G01R 3/13187 ;
Abstract
A method and circuit for determining the health of a microcontroller is provided having a circuit that includes a bus, a CPU coupled to the bus and a register coupled to the bus. A memory is also coupled to the bus. The memory is utilized by the first CPU. A controller is coupled to the register for controlling reading of the memory. The register generates a signature in response to the memory. The controller compares the reference signature and the second signature. The controller generated a fault signal when the reference signature is unequal to the second signature.