Data transmission system and method for operating a data transmission system
First Claim
1. A data transmission system, for executing applications which are independent of one another and which are reciprocally protected by secret keys, comprising:
- a data storage medium that has a segmented memory that stores an application directory that has an attribute for identifying an application area of the data storage medium and has a logical application number which is associated with an executable application and which is determinately specified by the attribute, wherein the logical application number is used as an index within the application directory; and
a read/write unit that stores the attribute and the logical application number of the application, the read/write unit being configured to execute the application by using the logical application number in the application directory for indexing and finding a start address for a sector of the memory which stores the executable application.
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Accused Products
Abstract
A data transmission system includes a data storage medium that has a segmented memory that stores an application directory that has an attribute for identifying an application area of the data storage medium and has a logical application number which is associated with an executable application and which is determinately specified by the attribute. The logical application number is used as an index within the application directory. The data transmission system further includes a read/write unit that stores the attribute and the logical application number of the application. The read/write unit is configured to execute the application by using the logical application number in the application directory for indexing and finding a start address for a sector of the memory which stores the executable application.
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Citations
21 Claims
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1. A data transmission system, for executing applications which are independent of one another and which are reciprocally protected by secret keys, comprising:
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a data storage medium that has a segmented memory that stores an application directory that has an attribute for identifying an application area of the data storage medium and has a logical application number which is associated with an executable application and which is determinately specified by the attribute, wherein the logical application number is used as an index within the application directory; and
a read/write unit that stores the attribute and the logical application number of the application, the read/write unit being configured to execute the application by using the logical application number in the application directory for indexing and finding a start address for a sector of the memory which stores the executable application. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a data transmission system, having a data storage medium with at least one executable application stored in a memory of the data storage medium and a stored application directory which stores an attribute for identifying an application area associated with the data storage medium and a logical application number associated with the executable application, and having a read/write unit which stores the attribute and the logical application number associated with the application, in which the read/write unit performs the following steps:
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evaluating the attribute prior to execution of the application in order to establish whether the application area associated with the data storage medium has provision for execution of the application, and if the result of the evaluation is positive, using a logical application number, corresponding to the executable application, in the application directory as an index in order to read a start address for a sector of the memory which stores the executable application. - View Dependent Claims (14, 15, 16, 17)
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18. A data transmission system, for executing applications which are independent of one another and which are reciprocally protected by secret keys, comprising:
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a data storage medium that has a segmented memory that stores an application directory that has an attribute for identifying an application area of the data storage medium and has a logical application number which is associated with an executable application and which is determinately specified by the attribute, wherein the logical application number is used as an index within the application directory; and
a read/write unit that that is configured to evaluate the attribute prior to execution of the application in order to determine whether the application area has provision for execution of the application and if the result of the evaluation is positive, the read/write unit is configured to execute the application and index and locate a start address for a sector of the memory which stores the executable application. - View Dependent Claims (19, 20, 21)
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Specification