Patent · US Expired

Microprocessor, in particular for use in a chip card, with a control unit and with a housing surrounding the control unit

US6185507A · kind A · utility

19Cited by

3References

7Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Michael Huber · Bad Abbach, DE
Peter Stampka · Burglengenfeld, DE
Josef Heitzer · Neutraubling, DE

Key dates

Filing date	Feb 23, 1999
Grant date	Feb 6, 2001
Priority date	—
Expiry date	Feb 23, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG07F7/082
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A microprocessor has a control unit with a housing surrounding the control unit. The invention also relates to a chip card having such a microprocessor that is protected against manipulations. At least one sensor indicates ambient states and is connected to the control unit and is provided in a region of the housing of the microprocessor. The control unit is configured in such a way that it can be placed in an inactive state if a measurement signal that indicates a predetermined ambient state is and/or is not fed to the control unit from the sensor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.