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AssigneeNXP B.V.
InventorsPhilippe Maugars, Patrice Gamand
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The invention provides a method for ensuring a secure NFC functionality of a wireless mobile communication device comprising the steps of detecting the charge state of a first energy source (1) which supplies the voltage for operating the wireless mobile communication device (S1); switching off the first energy source and switching on a second energy source (2), if the detected charge state of the first energy source (1) falls below a threshold (S2); detecting the charge state of the second energy source (2), if an external NFC signal is received (S3); charging of the second energy source via voltage induced by a received NFC signal to allow at least one secure NFC transaction, if the detected charge state of the second energy source (2) is below a threshold (S4). Furthermore the invention provides a wireless mobile communication device having a secure NFC functionality, which is always ready for operation of at least the secure NFC functionality.
Method for ensuring a NFC functionality of a wireless mobile communication device comprising of detecting the charge state of a first energy source which supplies the voltage for operating the wireless mobile communication device switching off the first energy source and switching on a second energy source, if the detected charge state of the first energy source falls below a threshold;
Wireless mobile communication device having a NFC functionality comprising antenna means t adapted to receive and send NFC signals;
Dependencies are inferred from the claim text.