| 摘要 |
PURPOSE: A data processing system is provided to allow a reduction of time for processing operations. CONSTITUTION: A data-processing system comprises a communication device(COM) communicating with an electronic module(MOD), a hardware circuit(HARD) and a microprocessor(PRC). The electronic module(MOD) is present in or inserted into a terminal and comprises information relating to the subscriber. For example, the electronic module(MOD) allows control of the memory dedicated to the user, integration of security mechanisms or realization of payments from a distance. In order to process the information comprised in the electronic module(MOD), the terminal comprises the microprocessor(PRC) which exchanges data with the electronic module(MOD) via the communication device(COM). For the exchange of data, there are two conventions, a direct and an indirect convention. These two conventions can be taken into account by the circuit(HARD) during an exchange of data between the electronic module(MOD) and the microprocessor(PRC). When a first data word(BYT1) is transmitted from the electronic module(MOD) to the microprocessor(PRC), it is processed by the hardware circuit(HARD) which transmits a second data word(BYT2) to the microprocessor. In the case where the direct convention is used, the second data word(BYT2) is identical to the first data word(BYT1). In the case where the indirect convention is used, the order of bits of the second data word(BYT2) is inverted with respect to the order of bits of the first data word(BYT1). When a third data word(BYT3) is transmitted from the microprocessor(PRC) to the electronic module(MOD), it is processed by the hardware circuit(HARD) which transmits a fourth data word(BYT4) to the electronic module(MOD). In the case where the direct convention is used, the fourth data word(BYT4) is identical to the third data word(BYT3). In the case where the indirect convention is used, the order of bits of the fourth data word(BYT4) is inverted with respect to the order of bits of the third data word(BYT3).
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