IC card and system for checking the functionality thereof

Details IC card and system for checking the functionality thereof IC card and system for checking the functionality thereof

1987-12-22

1988-10-11

Pitts, Harold I.

Registers

Systems controlled by data bearing records

Credit or identification card systems

235492, G06K 500

Patent

active

047773553

ABSTRACT:
An IC card having a built-in microprocessor, a fixed program memory with an extended program memory section, and a programmable memory with an extended programmable memory section. An external program can be temporarily loaded into the extended programmable memory section through the microprocessor under the control of an operating program stored in the extended program memory section. Such an external program may be a test program for checking the functionality of the IC card. The test program once loaded into the programmable memory is preferably erased after execution by the microprocessor so that an unauthorized person cannot easily access data or information stored in the memories from outside the IC card, thereby improving the security.

REFERENCES:
patent: 4742351 (1988-05-01), Suzuki

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