Portable data carrier assembly comprising a security device
US7167077B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 9, 2002 |
| Grant date | Jan 23, 2007 |
| Priority date | — |
| Expiry date | Jun 2, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a portable data carrier system having a control unit, a body, a data memory integrated in a chip, in which security-relevant data can be stored, and a feature for permitting information exchange between the control unit and an external access unit. A security device of the chip transmits a security signal that is influenced by an influencing feature integrated in the body and non-electrically connected with the security device. A detection feature of the security device detects the influenced security signal, an evaluation feature evaluates the detected, influenced security signal, and a blocking feature blocks a security-critical operating state of the data carrier system if the evaluation feature does not recognize a security signal influenced in the expected way.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.