| Title: | Chip card | ||
| Application Number: | 99104112 | Application Date: | 1999.03.17 |
| Publication Number: | 1233028 | Publication Date: | 1999.10.27 |
| Approval Pub. Date: | 2003.07.02 | Granted Pub. Date: | 2003.07.02 |
| International Classifi-cation: | G06K19/073 | ||
| Applicant(s) Name: | Siemens AG | Address: | |
| Inventor(s) Name: | Dominik Berger;Heiko Fibranz;Wolfgang Eber | ||
| Attorney & Agent: | cheng tianzheng | ||
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Abstract: |
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| The invention relates to a chip card includes a semiconductor chip that contains at least one memory. In order to supply energy to the chip and to provide for bi-directional data transmission from and to the chip, both contacts and a device for contactless data transmission are provided. The memory (1) is directly connected with means being provided for contactless data transmission (2) via a line (5) and a demodulation circuit (3), at this time, the memory connects with a voltage-supply contact (21) only via a switch (10) which is drives by a logic circuit (8). | |||
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| Time: | 6 | ||
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