Integrated circuit card
First Claim
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1. An IC card comprising:
- a processor contained therein and communicating with an external IC card acceptance means;
an internal memory contained in the IC card, cooperating with the processor and forming data files;
an external memory mounted on a surface of a body of the IC card, said internal memory including;
first files allotted to said external memory;
second files allotted to said internal memory; and
a first directory for defining said first files allotted to said external memory; and
an external memory access means, other than an internal memory access means, formed by said processor, said external memory access means alone can access said external memory by way of said external IC card acceptance means, said external memory access means established by a program and said internal memory access means established by a program, both programs being stored in a program ROM provided by said processor in the IC card.
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Abstract
An integrated circuit (IC) card is provided with an external memory having a much larger memory capacity than that of a usual internal memory packaged inside the IC card together with a processor. The external memory can be managed only by the processor through an external IC card accepted by a terminal machine.
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Citations
26 Claims
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1. An IC card comprising:
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a processor contained therein and communicating with an external IC card acceptance means; an internal memory contained in the IC card, cooperating with the processor and forming data files; an external memory mounted on a surface of a body of the IC card, said internal memory including; first files allotted to said external memory; second files allotted to said internal memory; and a first directory for defining said first files allotted to said external memory; and an external memory access means, other than an internal memory access means, formed by said processor, said external memory access means alone can access said external memory by way of said external IC card acceptance means, said external memory access means established by a program and said internal memory access means established by a program, both programs being stored in a program ROM provided by said processor in the IC card. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification