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. 08, 2022
Filed:
Mar. 09, 2020
Applicant:
Texas Instruments Incorporated, Dallas, TX (US);
Inventor:
Johann Zipperer, Unterschleissheim, DE;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/14 (2006.01); G06F 21/53 (2013.01);
U.S. Cl.
CPC ...
G06F 12/1425 (2013.01); G06F 21/53 (2013.01);
Abstract
A method of protecting software for embedded applications against unauthorized access is disclosed. Software to be protected is loaded into a protected memory area and access to the protected memory area is controlled by sentinel logic circuitry. The sentinel logic circuitry allows access to the protected memory area only either from within the protected memory area or from outside of the protected memory area but through a dedicated memory location within the protected memory area. The dedicated memory location then points to protected address locations within the protected memory area.