Systems and methods for creating, manipulating and processing rights and contract expressions using tokenized templates

• US 7,558,759 B2
• Filed: 11/19/2002
• Issued: 07/07/2009
• Est. Priority Date: 11/20/2001
• Status: Active Grant

• Current Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Original Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Inventors: Tran, Duc, Chen, Eddie J., DeMartini, Thomas, Fung, Joseph Zhung Yee, Tieu, Vincent Hsiang, Valenzuela, Edgardo, Nguyen, Mai
• Primary Examiner(s): Hewitt, II; Calvin L
• Assistant Examiner(s): Winter; John M
• Application Number:
  US10/298,999
• Publication Number:
  US 20030182142A1
• Time in Patent Office: 2,422 Days
• Field of Search: 705/1, 705/51, 705/50, 705/59
• US Class Current: 705/50
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: H04N 21/83555 using a structured language for describing usage rules of the content, e.g. REL

Abstract

System and methods for manipulating rights expressions for use in connection with a rights management system include one or more tokenized templates. Each tokenized template includes one or more rights expression language statements and one or more tokens associated with at least one of the rights expression language statements. Further, the tokens can be place holders for data items or rights expression elements. The system further includes a license template module that creates the tokenized templates, and a license instance creation module that replaces at least one of the tokens in one or more selected license templates with one or more of the data items or rights expression elements to generate a license instance. Additionally, the system includes a license instance analysis module having sub-modules for validating and interpreting license instances, and a data parsing module for extracting data from created license instances.

Claims

1. Computer-readable media with computer-executable instructions recorded thereon for creating rights expressions utilizing a license template for use in connection with a rights management system, wherein said license template includes a rights expression statement created based on a defined grammar, the computer-executable instructions, when executed, cause the system to perform the steps of:

creating one or more license templates, the license templates have one or more rights expression statements, the fights expression statements each have one or more first tokens associated therewith, wherein said one or more first tokens is a place holder for one of a plurality of data items;

replacing at least one of the first tokens in one or more selected license templates with one or more of the data items to generate a license instance;

comparing one or more portions of the license instance with one or more of the license templates to find at least one portion of the license instance which corresponds to at least one of the license templates, a license instance analysis module providing a result set indicating whether at least one corresponding license template exists;

identifying the corresponding license templates based on the comparison;

extracting data from the license instance by using the one or more portions of the license instance and the one or more corresponding license templates, the one or more first tokens in the corresponding license templates identifying one or more of the data items within the at least one portion of the license instance to be extracted; and

generating a license using the extracted data.

2. The computer-readable media as set forth in claim 1 wherein at least one of the first tokens define a place holder for one of a plurality of corresponding second tokens, the second tokens being different than the corresponding first tokens.

3. The computer-readable media as set forth in claim 2 wherein creating one or more license templates includes replacing one or more first tokens in one or more selected license templates with the corresponding one or more second tokens.

4. The system computer-readable media as set forth in claim 1 wherein one or more of the first tokens in the license templates define data items to be ignored by a license instance analysis module.

5. The computer-readable media as set forth in claim 1 wherein comparing one or more portions of the license instance with one or more of the license templates includes determining whether a condition is satisfied as to a set minimum number of the one or more portions of the license instance having at least one corresponding license template, the result set representing the a determination by the license instance analysis module that the license instance is valid upon the set minimum number condition being satisfied.

6. The system computer-readable media as set forth in claim 5 wherein the set minimum number represents a total number of the portions that form the license instance.

7. The computer-readable media as set forth in claim 1 wherein comparing one or more portions of the license instance with one or more of the license templates includes obtaining a set of the corresponding license templates indicated to exist, the result set representing the set of the existing corresponding license templates.

8. The computer-readable media as set forth in claim 7 wherein the result set further comprises one or more method calls associated with the existing corresponding license templates.

9. The computer-readable media as set forth in claim 7 wherein the result set further comprises one or more definitions for one or more of the existing corresponding license templates.

10. The computer-readable media as set forth in claim 9 wherein the definitions comprise user-readable explanations.

11. The computer-readable media as set forth in claim 1 wherein the system is updated by adding a new license template.

12. The computer-readable media as set forth in claim 11 wherein the new license template is placed in a first location accessible to at least one of a license template module, a license instance creation module, a license instance analysis module, and a data parsing module in the computer-readable media for creating rights expressions.

13. The computer-readable media as set forth in claim 1 wherein the rights expression statements are expressed in a rights expression language.

14. The computer-readable media as set forth in claim 13 wherein the rights expression language comprises XrML.

15. The computer-readable media as set forth in claim 1 wherein the license templates define well-formed rights expressions.

16. The computer-readable media as set forth in claim 1 wherein at least one of the license templates comprise a full rights expression or a fragmented rights expression.

17. A computer-implemented method for generating rights expressions utilizing a license template for use in connection with a rights management system, wherein said license template includes a rights expression statement created based on a defined grammar, the method for generating rights expressions comprising:

creating, by a license template module, one or more license templates on a server, the license templates having one or more rights expression statements;

associating, by the license template module, one or more first tokens with the rights expression statements on the server, wherein said one or more first tokens is a place holder for one of a plurality of data items;

generating, by a license instance creation module, a license instance on the server by replacing at least one of the first tokens in one or more selected license templates on the server with one or more of the data items;

finding, by a license instance analysis module, at least one portion of the license instance on the server that corresponds to at least one of the license templates by comparing one or more portions of the license instance on the server with one or more of the license templates on the server;

providing, by the license instance analysis module, a result set indicating whether at least one corresponding license template exists;

extracting data, by a data parsing module, from the license instance on the server using the one or more portions of the license instance and the corresponding license templates, the first tokens in the corresponding license templates identifying one or more of the data items within the at least one portion of the license instance to be extracted; and

generating, by the rights management system, a license using the extracted data.

18. The method as set forth in claim 17 wherein at least one of the first tokens define a place holder for one of a plurality of corresponding second tokens, the second tokens being different than the corresponding first tokens.

19. The method as set forth in claim 18 further comprising replacing one or more first tokens in one or more selected license templates with the corresponding one or more second tokens.

20. The method as set forth in claim 17 wherein one or more of the first tokens in the license templates define data items to be ignored by a license instance analysis module.

21. The method as set forth in claim 17 further comprising determining whether a condition is satisfied as to a set minimum number of the one or more portions of the license instance having at least one corresponding license template, the result set representing the determination by a license instance analysis module that the license instance is valid upon the set minimum number condition being satisfied.

22. The method as set forth in claim 21 wherein the set minimum number represents a total number of the portions that form the license instance.

23. The method as set forth in claim 17 further comprising obtaining a set of the corresponding license templates indicated to exist, the result set representing the set of the existing corresponding license templates.

24. The method as set forth in claim 23 wherein the result set further comprises one or more method calls associated with the existing corresponding license templates.

25. The method as set forth in claim 23 wherein the result set further comprises one or more definitions for one or more of the existing corresponding license templates.

26. The method as set forth in claim 25 wherein the definitions comprise user-readable explanations.

27. The method as set forth in claim 17 further comprising adding a new license template to the rights management system.

28. The method as set forth in claim 27 further comprising placing the new license template in a first location accessible to one or more modules in the rights management system.

29. The method as set forth in claim 17 wherein the rights expression language statements are expressed in a rights expression language.

30. The method as set forth in claim 29 wherein the rights expression language comprises XrML.

31. The method as set forth in claim 17 wherein the license templates define well-formed rights expressions.

32. The method as set forth in claim 17 wherein at least one of the license templates comprise a full rights expression or a fragmented rights expression.