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. 04, 1997
Filed:
Jan. 24, 1996
Applicant:
Inventor:
Franz Weikmann, Munich, DE;
Assignee:
GAO Gesellschaft fuer Automation und Organisation, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395490 ; 364264 ; 3642645 ; 3642592 ; 3642864 ; 364D / ; 395800 ; 395493 ;
Abstract
A data protective microprocessor circuit for preventing access to data or programs stored in memories, includes a microprocessor, a memory for storing an operating system, at least one memory with an individual secondary program, a circuit for monitoring a particular valid address and generating a first signal, a circuit for monitoring particular contents of a microprocessor program counter and generating a second signal, and a circuit for generating an inhibit signal based on said first and second signals.