Device having automatic process for upgrading the performance of mobile systems
First Claim
1. A communication system comprising:
- A. a service center;
B. a communication interface disposed between the service center and an electronic chip, the communication interface including a microprocessor and a program memory provided with a first limited set of instructions for communication with the electronic chip; and
C. the electronic chip, mounted on a chip support and including1. a microprocessor,2. a program memory provided with a second limited set of instructions which correspond to the first limited set of instructions,3. means for writing, in a reserved memory zone during a user session using the first and second limited sets of instructions, the characteristics of a different instruction, the different instruction being different than those of the second limited set of instructions, and4. an automatic execute system, the automatic execute system executing the different instruction during the user session after the characteristics are written in the reserved memory zone.
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Accused Products
Abstract
To simplify the manufacture of terminals for the use of chip cards, the system is designed so as to place a minimum set of instructions in these terminals and to transfer the storage of complementary instructions pertaining to uses of greater complexity and/or pertaining to the chip card into the chip card. To bring about the performance of these complementary instructions, an address designating an instruction of a complementary set is stored in a reserved memory of the chip card. The microprocessor of the chip card is furthermore provided with a microprogram enforcing the performance of an instruction thus designated as soon as it is detected that the reserved memory has been designated by an instruction of an elementary set of instructions of this microprocessor. It is shown that it is possible, in this way, to simplify and rationalize the manufacture of very powerful terminals.
16 Citations
10 Claims
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1. A communication system comprising:
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A. a service center; B. a communication interface disposed between the service center and an electronic chip, the communication interface including a microprocessor and a program memory provided with a first limited set of instructions for communication with the electronic chip; and C. the electronic chip, mounted on a chip support and including 1. a microprocessor, 2. a program memory provided with a second limited set of instructions which correspond to the first limited set of instructions, 3. means for writing, in a reserved memory zone during a user session using the first and second limited sets of instructions, the characteristics of a different instruction, the different instruction being different than those of the second limited set of instructions, and 4. an automatic execute system, the automatic execute system executing the different instruction during the user session after the characteristics are written in the reserved memory zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification