HAND-HELD DEVICE, SMART CARD INTERFACE DEVICE(IFD) AND DATA TRANSMITTING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a smart card interface device. SOLUTION: The smart card interface device is the one to be installed inside the extension slot of a hand-held device. A system is constituted of the smart card interface device which comprises a host interface unit to be connected to an input/output port in order to exchange a serial communication data signal and a clock signal with the input/output port comprised in the extension slot of the hand-held device, a first smart card connector for electric connection to a first type smart card, a first smart card interface unit for driving the connected first smart card and a protocol implementation unit for controlling respective constitution elements.