Recharging an embedded battery in a smart card
AssigneeIdemia France
InventorsLudovic Martin-Martinasso, Aissa Waknioun
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Abstract
Devices and methods for recharging an embedded battery in a smart card, including a control method implemented by a smart card (CD1) including a rechargeable battery (8). The control method may include operations for processing a transaction (TR1) with a terminal (T); receiving during this transaction a predetermined transaction command requiring a processing time, by the smart card, long enough to allow a recharging of the battery to at least a first predetermined threshold charge level; and, upon detection (S32) of this transaction command, triggering the recharging of the battery (8) by using a power supply delivered by the terminal (T) to reach at least the first predetermined threshold charge level.
Claims15
A control method implemented by a smart card including a battery that is rechargeable, the method comprising:
- processing a transaction during which the smart card communicates with an external terminal with which said smart card is coupled;
- receiving, during said processing of the transaction, a predetermined transaction command;
- detecting, from a current charge level of the battery, that said predetermined transaction command requires a processing time, by said smart card, long enough to allow a recharging of the battery to at least a first predetermined threshold charge level;
- and
- in response to said detecting, triggering the recharging of the battery by using a power supply delivered by the external terminal to reach at least the first predetermined threshold charge level during the processing time of the predetermined transaction command.
A smart card comprising:
- a rechargeable battery;
- a processing module configured to process a transaction during which the smart card communicates with an external terminal with which said smart card is coupled;
- a communication module configured to receive, during said processing of the transaction, a predetermined transaction command and to detect, from a current charge level of the battery, that said predetermined transaction command requires a processing time, by said smart card, long enough to allow a recharging of the battery to at least a first predetermined threshold charge level;
- and
- a control module configured, in response to said detection that the predetermined transaction command requires a processing time long enough to allow a recharging of the battery to at least a first predetermined threshold charge level, to trigger the recharging of the battery by using a power supply delivered by the external terminal in order to reach at least the first predetermined threshold charge level during the processing time of the predetermined transaction command.
Dependencies are inferred from the claim text.