Brief description of the communication between a nfc card has a dual interface a contact and without contact inserted in a terminal nfc, and a device nfc

摘要

The present invention relates to a process for the contactless communication between a nfc card (nfse) with a double contact interface (c6) and without contact (cli), installed in a communication terminal (hd2), and a device nfc (ed), the terminal module comprising a nfc (controller nfcc) coupled to the contact interface of the card and including a contactless communication interface (ac1), the method comprising the steps of: selection of one or other of the interfaces to contact and without contact with the card, the transmission of signals between the card and the nfc device for the selected interface, and if the contact interface of the card is selected, for the contactless interface (ac1) of the module nfc, and detection by the card (nfse) of the presence of the module nfc (controller nfcc) connected to the contact interface (c6), the selection of one or other of the interfaces to contact and without any contact (cli) of the card is carried out by the card in accordance with the result of the detection of the presence of the module nfc.