Double-interface intelligent card simulator based on field programmable gata array (FPGA)

Abstract

The invention discloses a double-interface intelligent card simulator based on a field programmable gata array (FPGA), which is high in efficiency and reliability, low in cost and high in performance and comprises a simulation antenna, a contact type card surface, an analog front end and a simulation unit. The analog front end is in non-contact type communication with the simulation antenna through a wireless passage, communication between the analog front end and the simulation antenna follows an international standardization organization (ISO) / international electrotechnical commission (IEC) 14443 TypeA international standard, contact type communication between the contact type card surface and the analog front end is achieved through a wire passage, communication between the analog front end and the contact type interface follows an ISO / IEC 7816 international standard, the simulation unit is communicated with the analog front end through the wire passage, and the analog front end and the simulation unit follow a universal serial bus (USB) v 2.0 communication protocol. The simulation antenna and the contact type card surface simulate communication modes with a reader under two working modes, the simulation unit is achieved through an FPGA chip, the analog front end is achieved through a radio frequency chip, and the priority of the communication mode between the analog front end and the contact type interface is higher than that of the communication mode between the analog front end and the simulation antenna.

Description

technical field [0001] The invention relates to a smart card emulator, in particular to an FPGA-based dual-interface smart card emulator. Background technique [0002] Smart Card (Smart Card) is a general term for a plastic card embedded with an integrated circuit chip. According to the type of embedded chip, IC card can be divided into three categories: memory card, logic encryption card, CPU card, but only CPU The smart card is the real smart card. The integrated circuit in the smart card (CPU card) includes a central processing unit (CPU), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM) and a memory solidified in a read-only memory (ROM). ) in the card operating system COS (Chip Operating System). Generally, a custom microcontroller (MCU) integrated with a CPU, memory and peripherals is used as the total control unit of the smart card. [0003] FPGA (Field Programmable Gate Array), that is, field programmable gate array, is ...

AI Technical Summary

Problems solved by technology

[0010] Existing deficiencies: At present, many existing dual-interface CPU card chip emulators based on RFID applications usually cannot meet or cannot fully meet the stringent requirements of dual-interface CPU card chips for emulators. Therefore, the existing dual-interface CPU card It is difficult for chip emulators to be directly applied to the field of RFID dual-interface CPU cards

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