Composite IC card
First Claim
1. A composite IC card for a plurality of different kinds of information systems, including:
- a control unit for receiving commands, designation codes from outside the IC card, said designation codes including first and second index codes, and for processing said commands and said designation codes from outside the IC card;
a user storage area having a plurality of storage areas for storing information, said storage areas being classifiable into groups corresponding to different information systems and each storage area within one of said groups having a security level;
means for storing enough of said designation codes to designate each of said storage areas as designated storage areas;
first means for accessing one of said groups of said storage areas based on said first index code;
second means for accessing at least one of said storage area within one of said groups of storage areas base on said second index code;
first means for internally verifying said first code for said first accessing means;
second means for internally verifying said second code for said second accessing means; and
means for accessing said designated storage areas when said first accessing means verifies said first code and said second accessing means verifies said second code.
1 Assignment
0 Petitions
Accused Products
Abstract
A composite IC card for controlling information of a plurality of different enterprises using an IC card in which a memory is divided into a plurality of storage areas and which has a code store section for storing a plurality of codes necessary to access the storage areas, a first code specify section for specifying a first code corresponding to each enterprise, a second code specify section for specifying a second code set according to the security level of each storage area, a code read section responsive to an instruction to access a desired storage areas from an external device for reading the first and second codes from the code store means, a code collate section for collating the externally inputted code with the code read by the code read section, and a section for allowing the access to the desired storage area thus instructed when all collations in the collate section result in a match.
148 Citations
15 Claims
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1. A composite IC card for a plurality of different kinds of information systems, including:
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a control unit for receiving commands, designation codes from outside the IC card, said designation codes including first and second index codes, and for processing said commands and said designation codes from outside the IC card; a user storage area having a plurality of storage areas for storing information, said storage areas being classifiable into groups corresponding to different information systems and each storage area within one of said groups having a security level; means for storing enough of said designation codes to designate each of said storage areas as designated storage areas; first means for accessing one of said groups of said storage areas based on said first index code; second means for accessing at least one of said storage area within one of said groups of storage areas base on said second index code; first means for internally verifying said first code for said first accessing means; second means for internally verifying said second code for said second accessing means; and
means for accessing said designated storage areas when said first accessing means verifies said first code and said second accessing means verifies said second code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification