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:
Jan. 12, 2010
Filed:
May. 06, 2002
Applicant:
Werner Ness, Unterschleissheim, DE;
Inventor:
Werner Ness, Unterschleissheim, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
For protecting a computer from manipulation of register contents, copies of registers to be protected (; PC) are created in separate redundancy registers (-). At each instruction execution, the content of the register to be protected is compared with the copy thereof. The instruction is only executed if there is a match of register contents. If there is a mismatch of register contents, this is interpreted as an indication that the content of the register to be protected has been manipulated, and error handling is performed.