Registers – Records – Conductive
Patent
1998-01-21
2000-10-03
Hajec, Donald
Registers
Records
Conductive
235380, 235382, G06K 1906
Patent
active
061260789
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an identification medium with a passive electronic data carrier, a system with identification media and a method for initializing an identification medium.
BACKGROUND OF THE INVENTION
Identification media are known for various applications, e.g., as access cards for specific areas of a company (electronic code), for time management, as access media for the use of equipment, e.g., data systems, and also as credit/debit card systems for procuring services. For each independent application an independent medium is required, e.g., in the form of a card or an electronic code. A new application which a user wishes to implement requires an additional new medium. Thus, a user wishing to use various applications must carry a corresponding number of individual media. This is both costly and cumbersome and there is also a risk of losing or forgetting one of the numerous media or cards and then not to have it available when required.
SUMMARY OF THE INVENTION
An object of the invention is to overcome the inadequacies and restrictions of the hitherto known solutions and to provide an identification medium with which several independent applications can be used with a single medium. The handling is simple and contactless and reliably operates in a hands-free manner. The security of the transmitted data must be guaranteed also with respect to faults, losses, including attempted fraud and the independence of the different applications must be so secured that no undesired influencing of other applications is possible. It also can include additional applications added subsequently on the same identification medium.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is described in greater detail hereinafter with reference to embodiments in the attached drawings, wherein:
FIG. 1 is a schematic circuit diagram of an identification medium according to the invention with a segmented application data field AD;
FIG. 2 is a schematic diagram of an associated decentralized read and write station WR;
FIGS. 3a and 3b are schematic side elevation and top plan views, respectively, of an identification medium with a large-area antenna;
FIGS. 4a and 4b are layouts of data organizations with a common data field and segmented application data field with several application segments;
FIG. 5 is a schematic block diagram of data organization of an application segment with a segment header SCDF and application data field SADF;
FIG. 6 is a diagram of data organization of an application segment with an implemented stamp;
FIG. 7 is a diagram of the association between organization levels and an implemented stamp;
FIGS. 8a and 8b are diagrams of the hierarchical authorization concept A of the system for all identification media and all associated read and write stations with organization levels;
FIG. 9 is a diagram of the link between the organization level and data organization;
FIG. 10 is a diagram of the uncopiable production of identification media;
FIG. 11 is a diagram showing the function and sequence of communication between an identification medium and a read and write station;
FIG. 12 is a diagram illustrating the function of a shadow memory in the application data field;
FIG. 13 is a diagram of a common cash segment as an application segment in ADF;
FIG. 14 is a diagram of an example of data organization with a common cash segment;
FIG. 15 is a diagram of the system compatibility of segmented and unsegmented identification media;
FIG. 16 is a diagram illustrating an example of a system with several independent applications with several read and write stations and several segmented identification media;
FIG. 17 is a diagram showing an example of a system used at a holiday location with several independent applications; and
FIGS. 18a, 18b and 19 are illustrations of examples of identification media which can be carried as identification carriers on a personal bracelet.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
FIG. 1 schematically shows an identification medium IM-S according to
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Graf Ulrich
Locher Johann
Farley Walter C.
Fureman Jared J.
Hajec Donald
Kaba Schliesssysteme AG
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