Abstract: A smart SD card and a method of accessing the same are disclosed, which resolve a problem of incompatibilities between drivers of various smart SD cards. The smart SD card includes a SD interface (201), a SD memory (203), a smart card (204) and a SD controller (202). The method of accessing the SD card includes: an application program performing a write operation on the smart card interface file and notifying the SD controller establishing a communication connection with the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller; the establishing of the connection being successful, the application program writing the smart card operation commands into the interface file, and the SD controller forwarding the commands to the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller.

Abstract: A multi-application smart card and a multi-application management system and method for the smart card are provided. The multi-application smart card comprises a management device for the application security domain, and the management device is use to manage and maintain the application security domains in the multi-application smart card, and the application security domains comprise a plurality of issuer application security domains which share the control right of the multi-application smart card. Optionally, the application security domains also comprise at least one cardholder application security domain which is subordinate to the issuer application security domain that creates the cardholder application security domain, and wherein the at least one cardholder application security domain is used to manage and maintain the applications created by the cardholder.

Abstract: A card to card transfer method used in the financial system is provided in the present invention, and comprises an initializing step, a transferring step and a transaction confirming step, wherein the initializing step includes the steps of calculating and obtaining the public key certificate and checking the amount of the transaction and so on, and the transferring step includes the steps of performing the transaction and so on. The present invention can achieve the function of transferring the electronic cash between two cards and can prevent the risk of repeatedly transferring the money into the card for transfer-in by using the card for transfer-out and so on.

Abstract: A computer processing system for implementing data upgrade includes a communication interface device, at least two application servers and a database server for storing data, wherein the communication interface device detects in real-time a connection state of the communication interface device and each of the application servers, and sends data received from external to an application server connected with itself for processing; all the application servers are connected with the database server to process data and store the processed data in the database server, the data upgrade is implemented in batch for the application servers requiring the data upgrade by disconnecting the application servers from the communication interface device and reestablishing the connection of the application servers with the communication interface device after the data upgrade is completed. During the data upgrade, upgrade may be implemented without shut-down of the system.

Abstract: A smart SD card and a method of accessing the same are disclosed, which resolve a problem of incompatibilities between drivers of various smart SD cards. The smart SD card includes a SD interface (201), a SD memory (203), a smart card (204) and a SD controller (202). The method of accessing the SD card includes: an application program performing a write operation on the smart card interface file and notifying the SD controller establishing a communication connection with the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller; the establishing of the connection being successful, the application program writing the smart card operation commands into the interface file, and the SD controller forwarding the commands to the smart card; the application program reading the interface file and receiving response data returned by the smart card via the SD controller.

Abstract: A computer processing system for implementing data upgrade includes a communication interface device, at least two application servers and a database server for storing data, wherein the communication interface device detects in real-time a connection state of the communication interface device and each of the application servers, and sends data received from external to an application server connected with itself for processing; all the application servers are connected with the database server to process data and store the processed data in the database server, the data upgrade is implemented in batch for the application servers requiring the data upgrade by disconnecting the application servers from the communication interface device and reestablishing the connection of the application servers with the communication interface device after the data upgrade is completed. During the data upgrade, upgrade may be implemented without shut-down of the system.