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:
Feb. 19, 2008
Filed:
Nov. 24, 2004
Applicants:
Thomas H. Keller, Jr., Elgin, IL (US);
Nandor C. Toth, Carpentersville, IL (US);
Gary E. Mastenbrook, Schaumburg, IL (US);
Inventors:
Thomas H. Keller, Jr., Elgin, IL (US);
Nandor C. Toth, Carpentersville, IL (US);
Gary E. Mastenbrook, Schaumburg, IL (US);
Assignee:
Northrop Grumman Corporation, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A timer circuit for tracking an elapsed time of an electronic device is provided. The timer circuit compares differences in elapsed times written to memory addresses of a memory chip with a periodic interval to determine whether any elapsed times written to the memory chip is corrupt. If so, then the corrupt data is discarded and the device elapsed time is tracked once again based on a valid elapsed time.