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US 2006/0150255 A1Published application
Manipulation-protected microcontroller system
OwnerHolger Ceskuttiinventor
Life of this patent
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Abstract
A microcontroller system encompasses a processor unit, a source for confidential data, and a bus that connects the processor unit and source. Integrated on one single substrate together with the source is an access control unit that decides, on the basis of signals transferred on the bus, whether an output of confidential data from the source is permitted or blocked.
Claims15
A microcontroller system, comprising:
- a substrate;
- a processor unit;
- a source for confidential data;
- a bus that connects the processor unit and the source;
- and
- an access control unit integrated on the substrate together with the source, wherein the access control unit decides, on the basis of a signal transferred on the bus, whether an output of the confidential data from the source is one of permitted and blocked.
3 more elements
Dependencies are inferred from the claim text.