RADIO FREQUENCY SIM CARD, RADIO FREQUENCY CARD READER AND MAGNETIC INDUCTION CONTROL METHOD FOR RADIO FREQUENCY COMMUNICATION.

摘要

A radio frequency SIM card, a radio frequency card reader and a magnetic induction control method for radio frequency communication are disclosed. The radio frequency SIM card includes a SIM card itself, a first radio frequency transceiver module, a first radio frequency antenna, a first microcontroller and a magnetic induction module. Wherein, if the magnetic induction module doesn't induce corresponding magnetic signal, the first radio frequency transceiver module and the first microcontroller are in a sleep state (301,302). Once the magnetic induction module induces the magnetic signal generated by magnetic field of the radio frequency reader, the induced magnetic signal is converted into electrical signal to activate the first radio frequency transceiver module (304). The radio frequency transceiver module then detect whether there is radio frequency carrier signal (305) to determine whether external interrupt is generated to awaken the first microcontroller If yes, the first radio frequency transceiver module enters a normal operation state (307) and exchanges data to a second radio frequency transceiver module of the radio frequency card reader (308).