CLIENT DEVICE WITH APPLICATION STATE TRACKING AND METHODS FOR USE THEREWITH

• US 20140157425A1
• Filed: 01/02/2013
• Published: 06/05/2014
• Est. Priority Date: 12/03/2012
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: Morega Systems, Inc.
• Inventors: Saremi, Thomas Jefferson
• Granted Patent: US 9,088,825 B2
• Time in Patent Office: Days
• US Class Current: 726/26
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 63/12 Applying verification of the received information cryptographic mechanisms or cryptographic arrangements for data integrity or data verification H04L9/32
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08

Abstract

A client device includes a network interface that is coupled to receive media content via a network, wherein the media content is protected by digital rights management data. A processing device executes a digital rights management application for validating playback of media content based on state tracker data. A memory stores the media content, the digital rights management application, the digital rights management data and the state tracker data. The digital rights management application generates the state tracker data based on digital rights management data and state data of the digital rights management application.

Claims

1. A client device comprising:

a network interface, coupled to receive media content via a network, the media content protected by digital rights management data;

a processing device, coupled to the network interface, for executing a digital rights management application for validating playback of media content based on state tracker data; and

a memory, coupled to the processing device, for storing the media content, the digital rights management application, the digital rights management data and the state tracker data;

wherein the digital rights management application generates the state tracker data based on digital rights management data and state data of the digital rights management application.

2. The client device of claim 1 wherein the state tracker data includes integrity data for validating the digital rights management data and the state data.

3. The client device of claim 2 wherein the digital rights management application determines validity of the digital rights management data based on the integrity data, in response to the digital rights management data being retrieved from memory;

and

wherein the digital rights management application removes the digital rights management data and the state data from memory in response to determining that the digital rights management data is invalid.

4. The client device of claim 2 wherein the digital rights management application determines validity of the state data based on the integrity data, in response to the state data being retrieved from memory;

and

wherein the digital rights management application removes the digital rights management data and the state data from memory in response to determining that the state data is invalid.

5. The client device of claim 1 wherein the memory stores the media content, the digital rights management application, the digital rights management data and the state tracker data in a hierarchical file structure.

6. The client device of claim 1 wherein the state data includes an activation timestamp.

7. The client device of claim 1 wherein the state data includes a time to renewal of the digital rights management application.

8. The client device of claim 1 wherein the digital rights management data includes the media content and a license file associated with the media content.

9. A method for use in a client device, the method comprising:

receiving media content via a network, the media content protected by digital rights management data;

storing the media content, a digital rights management application, digital rights management data and state tracker data in a memory; and

executing a digital rights management application for validating playback of media content based on state tracker data, wherein the digital rights management application generates the state tracker data based on the digital rights management data and state data of the digital rights management application.

10. The method of claim 9 wherein the state tracker data includes integrity data for validating the digital rights management data and the state data.

11. The method of claim 10 wherein the digital rights management application determines validity of the digital rights management data based on the integrity data, in response to the digital rights management data being retrieved from memory;

and

wherein the digital rights management application removes the digital rights management data and the state data from memory in response to determining that the digital rights management data is invalid.

12. The method of claim 10 wherein the digital rights management application determines validity of the state data based on the integrity data, in response to the state data being retrieved from memory;

and

wherein the digital rights management application removes the digital rights management data and the state data from memory in response to determining that the state data is invalid.

13. The method of claim 9 wherein the memory stores the media content, the digital rights management application, the digital rights management data and the state tracker data in a hierarchical file structure.

14. The method of claim 9 wherein the state data includes an activation timestamp.

15. The method of claim 9 wherein the state data includes a time to renewal of the digital rights management application.

16. The method of claim 9 wherein the digital rights management data includes the media content and a license file associated with the media content.