MP3 PLAYER FOR DEALING ELETRONIC CASH AND METHOD THEREOF

摘要

An MP3(MPEG(Moving Picture Experts Group) audio layer 3) player having an electronic money transfer function and an electronic money transfer method using the same are provided to transfer stored electronic money to another MP3 player irrespective of a place and a time. An SIM(Subscriber Identification Module) control unit confirms a data communication session with a transfer transaction MP3 player(S400). The SIM control unit receives an amount of transfer money inputted by a user(S404). The SIM control unit requests traffic card information including traffic card identification information and charging money information from an embedded traffic card(S406). The SIM control unit receives the traffic card information from the embedded traffic card(S408). An amount of the received transfer money is compared with the received traffic card information. When an amount of charging money is less than an amount of the transfer money(S410), the SIM control unit outputs an error message(S402). When an amount of the charging money is greater than an amount of the transfer money, the SIM control unit transmits a traffic card charging money amount reduction command to the traffic card(S412). The SIM control unit receives a traffic card charging money amount reduction completion message from the traffic card(S414). The SIM control unit encrypts the received traffic card identification information and an amount of the received transfer money(S416). The SIM control unit transmits the encrypted information to the transfer transaction MP3 player connected through the USB cable(S418). The SIM control unit receives a transfer completion message from the transfer transaction MP3 player(S420).