Method and system to support dynamic rights and resources sharing

• US 7,720,767 B2
• Filed: 10/24/2005
• Issued: 05/18/2010
• Est. Priority Date: 10/24/2005
• Status: Active Grant

• Current Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Original Assignee: ContentGuard Holdings, Inc. (Pendrell Corporation)
• Inventors: Demartini, Thomas, Wang, Xin, Ta, Thanh, Chen, Eddie J., Nguyen, Mai
• Primary Examiner(s): Fischer; Andrew J.
• Assistant Examiner(s): MCINTYRE, CHARLES AARON
• Application Number:
  US11/256,272
• Publication Number:
  US 20070094145A1
• Time in Patent Office: 1,667 Days
• Field of Search: None
• US Class Current: 705/59
• CPC Class Codes: G06F 21/105 Arrangements for software license management or administration, e.g. for managing licenses at corporate level
• CPC Class Codes: G06Q 30/06 Buying, selling or leasing transactions

Abstract

The invention relates to method for deriving a sub-right from a right, the right comprising a plurality of components, each of which specifies an aspect of the right. A component may be, for example, a principal, an action, a resource, and a condition. The invention also relates to a method for integrating a first right with a second right. Furthermore, the invention relates to a method of sharing rights by deriving a sub-right from a right, allowing use of the sub-right, and integrating the sub-right with the right. In addition, the invention relates to a system to support rights sharing by enabling the derivation of a sub-right from a right, the right comprising plural components each of which specifies an aspect of the right, the system comprising a receiving module for receiving a sub-right, the sub-right comprising plural components each of which specifies an aspect of the sub-right, and a confirmation module for confirming that the values of the components of the sub-right can be derived from the values of the corresponding components of the right. The invention further relates to a method for deriving a sub-right from a pool of rights granted by a grantor to a grantee for controlling use of resources within a computing environment, the computing environment having a mechanism for enforcing rights within the environment to control use of resources in accordance with the rights.

Claims

1. A method for deriving a sub-right from a shareable right, the shareable right comprising at least one component, each of which specifies an aspect of the shareable right, said method comprising:

receiving, by a computing device, a request for a sub-right, wherein the request specifies at least one component, each of which specifies an aspect of the sub-right; and

deriving, by the computing device, the sub-right comprising the at least one component when the values of the at least one component specified in the request can be derived from the values of the corresponding at least one component of the shareable right, wherein the sub-right is a shareable sub-right from which further sub-rights can be derived.

2. The method of claim 1, wherein the receiving step comprises generating components for the sub-right.

3. The method of claim 1, wherein the receiving step comprises receiving requests for shared licenses creation.

4. The method of claim 1, wherein the deriving step comprises a step of verifying that a component of the sub-right is the corresponding component of the right.

5. The method of claim 1, wherein the deriving step comprises a step of verifying that a component of the sub-right is part of the corresponding component of the right, the latter representing a collection.

6. The method of claim 1, wherein the deriving step comprises a step of verifying a component of the sub-right is an instance of the corresponding component of the right, the latter representing a class.

7. The method of claim 6, wherein the class represents a universe of the component.

8. The method of claim 1, wherein a component can be a principal, an action, a resource, or a condition.

9. The method of claim 8, wherein the right contains a state condition.

10. The method of claim 9, wherein the receiving step comprises apportioning state values for each state condition in the sub-right based on the permissible state values of the corresponding state condition in the right and its current state.

11. The method of claim 10, wherein the apportioning comprises deriving from a state condition specifying a maximum count, wherein the current state of the state condition denotes an accumulated count.

12. The method of claim 10, wherein the apportioning comprises deriving from a state condition specifying a range of values, wherein the current state of the state condition denotes the sub-ranges of the specified range that are no longer available.

13. The method of claim 8, further comprising creating restricted conditions to further restrict the use of a sub-right.

14. The method of claim 1, further comprising the step of updating the right expression after the derivation.

15. The method of claim 14, wherein the updating step comprises the step of updating the states of the right.

16. A system to support rights sharing by enabling the derivation of a sub-right from a shareable right, the shareable right comprising at least one component, each of which specifies an aspect of the shareable right, the system comprising one or more computing devices that execute:

a receiving module that receives a request for a sub-right, the request specifying at least one component, each of which specifies an aspect of the sub-right;

a confirmation module that confirms that the values of the at least one component of the sub-right can be derived from the values of the corresponding at least one component of the shareable right; and

a sharing module that derives the sub-right, wherein the sub-right is a shareable sub-right from which further sub-rights can be derived and the sub-right comprises the at least one component.

17. The system of claim 16, wherein the one or more computing devices further execute:

an installation module that installs a group license on a device, making it available for sharing; and

for uninstalling an installed group license, making it unavailable for sharing on the current device;

an installation tracking module that tracks the installed/uninstalled group license;

a tracking module that tracks the states of rights of a group license; and

a sharing module that;

creates shared licenses by;

(a) receiving a request for sharing;

(b) interpreting the installed group license including extracting the values of the states of rights and authorizing the request; and

(c) deriving a shared license and for integrating a shared license back to the group license; and

integrates a shared license to a group license by;

(a) verifying the shared license was derived from the group license; and

(b) updating the states values of the group license using the state values of the shared license.

18. The system of claim 17, wherein the installation module installs the group license by:

verifying the integrity and authenticity of the group license;

verifying that a shareable right in the group license has not been expired;

verifying with an installation tracking module that the group license has not been installed before;

using a state tracking module to keep track of the initial states of rights and to later update the states of rights as rights are being used; and

storing the group license in a license repository.

19. The system of claim 17, wherein the installation module uninstalls the group license by:

invoking the state tracking module to release the tracking of states of rights of the group license; and

invoking the installation tracking module, which then updates the tracking information to indicate that uninstalled status of the group license together with its certified states of rights at the time of uninstallation.