Non-contact type intelligent card simulator

Abstract

The invention discloses a non-contact type intelligent card simulator comprising a simulator antenna, a carrier wave demodulating module, a signal regulating module and a simulated chip, wherein the signal regulating module is used for regulating a received reset signal; and the signal regulating module outputs an ineffective reset signal to the simulated chip when the received reset signal is unchanged no matter an effective reset signal or the ineffective reset signal is received and outputs a pulse-type effective reset signal to the simulated chip when the received reset signal is changed no matter the received reset signal is changed from the effective reset signal to the ineffective reset signal or changed from the ineffective reset signal to the effective reset signal. The inventionensures that the on-contact type intelligent card simulated chip and a simulator manufactured according to standard debugging protocols, i.e. a JTAG (Joint Test Action Group) and the like, compete the functions of the downloading, the operation starting, and the like of user codes even if a non-contact type intelligent card reader is not used under the precondition of ensuring that the functions are consistent to the functions of a product chip, thereby being convenient for users to use.

Description

technical field [0001] The invention relates to the field of integrated circuit chip emulators, in particular to a non-contact smart card emulator. Background technique [0002] There is a user program developed by the user in the non-contact smart card (product card). In the writing and debugging of the user program, the tool used is generally a non-contact smart card emulator. The non-contact smart card emulator uses an emulation chip including various functions of the product chip (that is, the non-contact smart card chip) to simulate the working behavior of the product card. Compared with the product chip, in addition to the chip function module that simulates the function of the chip in the simulation chip, there is also a simulation module for realizing the simulation debugging function. The simulation modules in many simulation chips will be designed according to a certain standard protocol to ensure the versatility of the simulation module part. For example, for a ...

AI Technical Summary

Problems solved by technology

[0003] However, these standard debugging protocols are general debugging protocols and are not specific to chips in a specific application field.

The emulation module and chip function module in the emulation chip realized according to these protocols cannot work when the external reset signal of the chip is valid; The simulation module in the simulation chip communicates, and the download and start-up of user programs cannot be realized through the simulation module.

For example, the emulation chip implemented by JTAG protocol, when the external reset signal of the chip is valid, the JTAG emulation module in the emulation chip cannot work, and the PC debugging software cannot complete the user program download and start the user program through the scan chain in the emulation chip JTAG emulation module. Program running and other functions

[0004] In the existing non-contact smart card emulator, the reset signal of the emulation chip is associated with whether there is a carrier signal from the antenna of the non-contact card reader, that is, the antenna of the emulator receives the signal sent by the antenna of the card reader. When the carrier signal of the emulation chip is received, the reset signal pin of the emulation chip receives an invalid reset signal, the chip function module and the emulation module of the emulation chip can work, and the user program can be downloaded, started and run, etc.; the antenna of the emulator is not When receiving the carrier signal sent by the antenna of the card reader, the reset signal pin of the emulation chip receives a valid reset signal, the chip function module and the emulation module of the emulation chip are in the reset state, unable to work, and unable to download the user program , start and run, etc., if these operations are performed on the PC debugging software at this time, the software will report an error

[0005] In this way, when using this kind of non-contact smart card emulator, when downloading and starting the user program to run, it must be ensured that there is a non-contact card reader, the antenna of the card reader has sent a carrier signal, and the antenna of the emulator must be placed The effective field strength range of the card reader antenna, otherwise the user code cannot be downloaded and started to run, and the PC debugging software will also report an error, which brings inconvenience to the debugging work and affects the efficiency of debugging

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