Method and apparatus for sharing data files among runtime environment applets in an integrated circuit card

• US 20040215674A1
• Filed: 04/29/2004
• Published: 10/28/2004
• Est. Priority Date: 05/11/1999
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Guthery, Scott B., Milstein, David, Odinak, Gilad, Perlin, Eric C., Deo, Vinay
• Application Number:
  US10/837,441
• Publication Number:
  US 20040215674A1
• Time in Patent Office: Days
• US Class Current: 707/205
• CPC Class Codes: G06Q 20/341 Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
• CPC Class Codes: G06Q 20/3552 Downloading or loading of personalisation data
• CPC Class Codes: G06Q 20/3576 Multiple memory zones on card
• CPC Class Codes: G07F 7/00 Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
• CPC Class Codes: G07F 7/1008 Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system

Abstract

An integrated circuit card includes a storage device to store one or more code files and one or more data files, and control logic. The control logic implements an ICC runtime environment that executes an applet in response to a command identifying both a code file and a data file received from a host system.

Claims

1. An integrated circuit card (ICC) comprising:

an operating system; and

a file system responsive to the operating system and configured to add, delete, modify, or execute discrete code files and data files.

2. An integrated circuit card as recited in claim 1, further comprising a runtime environment responsive to the operating system and configured to interface with the file system to execute a runtime environment applet.

3. An integrated circuit card as recited in claim 2, wherein the runtime environment selectively invokes one or more code files and one or more data files to implement the runtime environment applet.

4. An integrated circuit card as recited in claim 2, wherein the runtime environment is configured to selectively invoke a data file with different code files to implement the runtime environment applet.

5. An integrated circuit card as recited in claim 2, wherein the runtime environment is configured to selectively invoke a code file with multiple data files to implement the runtime environment applet.

6. An integrated circuit card as recited in claim 2, wherein the runtime environment applet is invoked in response to receiving a command from a host identifying one or more code files and one or more data files.

7. An integrated circuit card as recited in claim 2, wherein the runtime environment applet can execute the code file and the data file in response to a command received from a host system via the operating system.

8. An integrated circuit card as recited in claim 1, wherein the code files and the data files implement one or more runtime environment applets.

9. An integrated circuit card as recited in claim 1, wherein the file system facilitates modification in integrated circuit functionality without modifying the data files.

10. An integrated circuit card as recited in claim 1, wherein the file system facilitates addition and deletion of the code files independent of the data files.

11. An integrated circuit card application development system comprising a computer system communicatively coupled to the integrated circuit card of claim 1.

12. An integrated circuit readable storage medium having stored thereon a plurality of executable instructions to implement the file system of claim 1.

13. A method for executing a runtime environment applet in an integrated circuit card (ICC) comprising:

receiving a command at the ICC to execute an identified code file and an identified data file to execute the runtime environment applet;

accessing a file system to retrieve and load the identified code file and the identified data file; and

executing the identified code file through completion to perform operations in the identified data file called for by the executing code.

14. A method as recited in claim 13, further comprising:

receiving the command to execute multiple data files with the identified code file;

accessing the file system to retrieve and load the multiple data files; and

executing the identified code file through completion to perform operations in the multiple data files called for by the executing code.

15. A method as recited in claim 13, wherein the command is received from a host system in response to inserting the ICC into a card reader.

16. A method as recited in claim 13, further comprising:

receiving a second command to execute the identified code file with a different identified data file;

accessing the file system to retrieve and load the different identified data file; and

executing the identified code file through completion to perform operations in the different identified data file called for by the executing code.

17. A method as recited in claim 13, further comprising:

receiving a second command to execute a different identified code file with the identified data file;

accessing the file system to retrieve and load the different identified code file; and

executing the different identified code file through completion, performing operations in the identified data file called for by the executing code.