Method for Ensuring a Secure Nfc Functionality of a Wireless Mobile Communication Device and Wireless Mobile Communication Device Having a Secure Nfc Functionality
First Claim
1. 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;
- detecting the charge state of the second energy source, if an external NFC signal is received; and
charging of the second energy source via voltage induced by a received NFC signal to allow at least one NFC transaction, if the detected charge state of the second energy source is below a threshold.
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Abstract
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.
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Citations
7 Claims
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1. 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;
- detecting the charge state of the second energy source, if an external NFC signal is received; and
charging of the second energy source via voltage induced by a received NFC signal to allow at least one NFC transaction, if the detected charge state of the second energy source is below a threshold. - View Dependent Claims (2, 3)
- detecting the charge state of the second energy source, if an external NFC signal is received; and
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4. Wireless mobile communication device having a NFC functionality comprising antenna means t adapted to receive and send NFC signals;
- a NFC circuit adapted to provide a NFC functionality for the wireless mobile communication device;
a first energy source adapted to supply power for the wireless mobile communication device;
a second energy source connectable to the NFC circuit to supply power thereto;
control means adapted to monitor the charge state of the first energy source and adapted to switch off the first energy source and to switch on to the second energy source if the monitored charge state of the first energy source falls below a threshold;
detecting means adapted to detect the charge state of the second energy source; and
wherein the second energy source is adapted to be charged via voltage induced by an external NFC signal received by the antenna means if the detected charge state the second energy source is not sufficient to allow at least one NFC transaction. - View Dependent Claims (5, 6, 7)
- a NFC circuit adapted to provide a NFC functionality for the wireless mobile communication device;
Specification