License-card-controlled chip card system
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United States of America Patent
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Sep 5, 2000
Grant Date -
N/A
app pub date -
Jan 16, 1998
filing date -
Mar 7, 1996
priority date (Note) -
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Abstract
A chip card system, whose chip cards (AK, LK) have in each case at least one internal processor (P) and a non-volatile memory (S) at least for an operating system of the processor (P). There are a multiplicity of user chip cards (AKn) whose processors (P) can in each case execute user command instructions only after an activation, and there is at least one license chip card (LK), in whose non-volatile memory (S) a limitable number of activatable user chip cards (AKn) can be managed. By means of at least one read-write station (AKg) for chip cards (LK), the activation of the internal processor (P) is effected in a user chip card (AKi) if in the memory (S) of the license chip card (LK) the number of activatable user chip cards (AKn) is not yet exhausted. Thereafter, the number of activatable user chip cards (AKn) is decremented in the memory (S) of the license chip card (LK).
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