Means for the communication of the chip cards, a usb using the transfer of a maximum speed or high

摘要

The present invention relates to a chip card able to communicate with a central in a standard protocol (usb (universal serial bus), via a cable that is compatible with the usb is terminated by a read head / connection of the card, the card including: - a first point of contact which receives a power signal coming from the central, - a second point of contact, which connects to the earth, - a third and fourth contact points which cooperate in order to send and receive data signals differential - an embodiment of the integrated circuit sending and receiving data signals that are compatible, thanks to said third and fourth contact points, - a time-stamping module having a sufficient accuracy for clocking at least one transfer of data at maximum speed of the signals.