Consuming device and method for authenticating a consumable component
AssigneeInfineon Technologies AG
InventorsArmin Krieg, Christoph Saas, Matthias Pichler
Life of this patent
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Abstract
In accordance with one embodiment, a consuming device is provided, comprising a power supply for an authentication chip of a consumable component, wherein the internal resistance of the power supply is variable, a detection device configured to capture information about an operating state of the authentication chip for a plurality of values of the internal resistance of the power supply and to determine a dependence of the operating state of the authentication chip on the internal resistance of the power supply, and an authentication circuit configured to authorize the use of the consumable component by the consuming device based on the determined dependence.
Claims20
A system, comprising:
- a consumable component including an authentication chip;
- a consuming device configured to receive the consumable component, the consuming device comprising:
- a power supply having an internal resistance configured to vary between a plurality of resistance values, wherein the authentication chip is configured to change its operating state depending on a supply voltage from the power supply;
- and
- a detection device configured to capture information about the operating state of the authentication chip for the plurality of resistance values of the internal resistance of the power supply, and further configured to determine a dependence of the operating state of the authentication chip on the plurality of resistance values;
- and
- an authentication circuit configured to authorize use of the consumable component based on the determined dependence.
A consuming device, comprising:
- a power supply for an authentication chip of a consumable component, the power supply having a variable internal resistance;
- a detection device configured:
- to capture information about an operating state of the authentication chip for a plurality of resistance values of the variable internal resistance of the power supply, and
- to determine a dependence of the operating state of the authentication chip on the plurality of resistance values of the power supply;
- and
- an authentication circuit configured to authorize use of the consumable component by the consuming device based on the determined dependence.
A method for authenticating a consumable component at a consuming device, comprising:
- capturing information about an operating state of an authentication chip of the consumable component for a plurality of values of a variable internal resistance of a power supply used by the consuming device to supply the authentication chip;
- determining a dependence of the operating state of the authentication chip on the variable internal resistance of the power supply;
- and
- authorizing use of the consumable component by the consuming device depending on the determined dependence.
Dependencies are inferred from the claim text.