System for interfacing between a terminal and a smart card, method for same, and smart card applied to same
The present invention provides a system and method for interfacing between a terminal and a smart card embedded within smart card, and a Universal Subscriber Identification Module (USIM), and a smart card applied to the same. That is, the execution procedure of a service application in the smart card is defined using a new interface between the terminal and the smart card by providing construction of a smart card equipped with one or more service applications, executing the special service application according to the request of the terminal, providing an output value according to the execution of the special application to the terminal, and requesting a special I/O device.
1. A single smart card embedded with a USIM for executing an Application On Card function by forming an interface with a terminal, the smart card comprising:
an application storage unit for storing a plurality of service applications executable on a software platform;
a card control unit for waking up a special service application stored in the application storage unit of the smart card based upon an execution request for the special service application received from the terminal; and
an application interworking unit for requesting the terminal to check if it possesses an input/output device required for interworking with the smart card to execute the special service application and if checked to provide to the terminal an output value corresponding to the execution of the special service application;
wherein said smart card, at initial startup with a power supply, prepares an identification number list of each of the service applications embedded in the smart card and transmits the identification number list to the terminal for executing the special service application upon receipt by the terminal of said output value.
2. The smart card of claim 1 , wherein the application storage unit assigns an identification number to each of the one or more service applications and stores the identification number thereof.
3. The smart card of claim 1 , wherein the card control unit, according to the execution request of the terminal based on an identification number assigned to the special service application, wakes up the corresponding service application mapped into the identification number.
4. An interface method to permit a terminal to carry out an Application On Card function with one smart card having a USIM (Universal Subscriber Identify Module) for executing a service application selected from a plurality of service applications embedded within said one smart card, the interface method comprising:
waking up a special service application from the plurality of service applications embedded in said one smart card according to an execution request for the special service application received from the terminal;
checking whether the terminal has the required input/output device for interworking with the smart card in executing the special service application; and
providing an output value to the terminal corresponding to the execution of the special service application when the terminal is checked as having the required input/output device.
5. The interface method of claim 4 , wherein the waking-up step comprises:
preparing an identification number list for one or more embedded service applications at initial startup with a power supply and transmitting the identification number list to the terminal;
receiving an execution request based on an identification number assigned to the special service application from the terminal; and
waking up the special service application mapped into the identification number received from the terminal.
6. A computer-readable recording medium, comprising computer readable code to control at least one processing device to implement an interface method with a terminal to carry out an Application On Card function with one smart card having a USIM (Universal Subscriber Identify Module) for executing a service application selected from a plurality of service applications embedded within said one smart card, the method comprising:
waking up a special service application from the plurality of service applications embedded in said one smart card according to an execution request for the special service application received from the terminal;
checking whether the terminal has the required input/output device for interworking with the smart card in executing the special service application; and
providing an output value to the terminal corresponding to the execution of the special service application when the terminal is checked as having the required input/output device.