Method and system for implementing digital rights management

• US 20070300310A1
• Filed: 08/27/2007
• Published: 12/27/2007
• Est. Priority Date: 03/18/2003
• Status: Abandoned Application

• Current Assignee: Sony Corporation Of America (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Original Assignee: Sony Corporation Of America (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Inventors: Molaro, Donald
• Application Number:
  US11/895,870
• Publication Number:
  US 20070300310A1
• Time in Patent Office: Days
• US Class Current: 726/29
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed

Abstract

In one embodiment, a content license is created that defines parameters for accessing a piece of digital content. A first logical expression in the content license defines a plurality of playback devices that are authorized to access the piece of digital content. A second logical expression in the content license defines at least one time interval when the plurality of playback devices are authorized to access the piece of digital content. The content license is used to access the piece of digital content.

Claims

1. A method of creating a content license for facilitating access to a piece of digital content comprising:

accessing a plurality of parameters wherein said plurality of parameters is operable to uniquely identify a plurality of authorized playback devices that are associated with a recipient; and

utilizing said plurality of parameters to create said content license, wherein said content license enables any one of said plurality of authorized playback devices to access said piece of digital content.

2. The method as described in claim 1, wherein said plurality of parameters is further operable to define a time interval that said plurality of authorized playback devices are authorized to access said piece of digital content.

3. The method as described in claim 1, wherein said plurality of parameters uniquely identify said plurality of authorized play devices through a unique identification of each of said plurality of playback devices.

4. The method as described in claim 1, wherein said accessing said plurality of parameters comprises:

using a logical expression that comprises a plurality of mathematical expressions.

5. The method as described in claim 1 further comprising:

transmitting said created content license to said recipient.

6. The method as described in claim 1 further comprising:

verifying an identity of said recipient of said piece of digital content.

7. The method as described in claim 6 wherein said verifying comprises:

using of a digital certificate that is substantially compliant with the X.509 standard.

8. The method as described in claim 1 further comprising:

verifying each of said plurality of playback devices using a plurality of digital certificates.

9. The method as recited in claim 8, wherein said plurality of digital certificates are substantially compliant with the X.509 standard.

10. A method of creating a content license for facilitating access to a piece of digital content comprising:

accessing a request for accessing said piece of digital content;

accessing a plurality of parameters operable to identify a plurality of authorized playback devices that belong to a client requesting said piece of digital content; and

utilizing said plurality of parameters to create said content license, wherein said content license enables any one of said plurality of authorized playback devices to access said piece of digital content.

11. The method as described in claim 10, wherein said plurality of parameters is further operable to define a time interval that said plurality of authorized playback devices are authorized to access said piece of digital content.

12. The method as described in claim 10, wherein said plurality of parameters uniquely identify said plurality of authorized play devices through a unique identification of each of said plurality of playback devices.

13. The method as described in claim 10, wherein said accessing said plurality of parameters is through use of a logical expression that comprises a plurality of mathematical expressions.

14. The method as described in claim 10 further comprising:

transmitting said created content license to said recipient.

15. The method as described in claim 10 further comprising:

verifying an identity of said recipient of said piece of digital content.

16. The method as described in claim 15 wherein said verification is through use of a digital certificate that is substantially compliant with the X.509 standard.

17. The method as described in claim 10 further comprising:

verifying each of said plurality of playback devices using a plurality of digital certificates.

18. The method as recited in claim 17, wherein said plurality of digital certificates are substantially compliant with the X.509 standard.

19. A computer system comprising:

a bus;

a memory unit coupled with said bus; and

a processor coupled with said bus, said processor for executing a method of creating a content license for facilitating access to a piece of digital content comprising;

accessing a plurality of parameters wherein said plurality of parameters is operable to uniquely identify a plurality of authorized playback devices that belong to a recipient; and

utilizing said plurality of parameters to create said content license, wherein said content license enables any one of said plurality of authorized playback devices to access said piece of digital content.

20. The computer system as described in claim 19, wherein said plurality of parameters is further operable to define a time interval that said plurality of authorized playback devices are authorized to access said piece of digital content.

21. The computer system as described in claim 19, wherein said plurality of parameters uniquely identify said plurality of authorized play devices through a unique identification of each of said plurality of playback devices.

22. The computer system as described in claim 19, wherein said accessing said plurality of parameters comprises using a logical expression that comprises a plurality of mathematical expressions.

23. The computer system as described in claim 19, wherein said method further comprises:

transmitting said created content license to said recipient.

24. The computer system as described in claim 19, wherein said method further comprises:

verifying an identity of said recipient of said piece of digital content.

25. The computer system as described in claim 24 wherein said verification comprises using a digital certificate that is substantially compliant with the X.509 standard.

26. The computer system as described in claim 19, wherein said method further comprises:

verifying each of said plurality of playback devices using a plurality of digital certificates.

27. The computer system as recited in claim 26, wherein said plurality of digital certificates is substantially compliant with the X.509 standard.