Method and Device for Sharing of Content Protected by Digital Rights Management

• US 20070283420A1
• Filed: 12/08/2003
• Published: 12/06/2007
• Est. Priority Date: 12/08/2003
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Rantalahti, Antti
• Granted Patent: US 7,690,042 B2
• Time in Patent Office: Days
• US Class Current: 726/4
• CPC Class Codes: G06F 21/1013 to locations
• CPC Class Codes: G06F 21/1077 Recurrent authorisation
• CPC Class Codes: G06F 21/1086 Superdistribution
• CPC Class Codes: G06F 2221/2111 Location-sensitive, e.g. geographical location, GPS
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04W 12/08 Access security

Abstract

The present invention provides methods and devices allowing a secure way of sharing DRM-protected content. A content holder may share the content under certain restrictions. These restrictions include range-based, time-based or usage-based limitations. The invention offers a secure sharing method preventing copyright violations and preserving the copyright owners control over the content use, while also offering new marketing possibilities to him.

Claims

1. Method for sharing content protected by digital rights management (DRM) between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, comprising the steps of:

receiving a request for sharing said content from said second mobile electronic terminal device;

answering said request by sending

a confirmation to said second mobile electronic terminal device about authorization of said first mobile electronic terminal device to access said content; and

a data signal based on said authorization to said second mobile electronic terminal device and indicative of at least one condition said second mobile electronic terminal device has to meet in order to be authorized for accessing said content.

2. Method according to claim 1, wherein said content is provided in said first mobile electronic terminal device, further comprising the step of:

sending said content to said second mobile electronic terminal device.

3. Method according to claim 1, wherein a key for accessing said content is provided in said first mobile electronic terminal device, further comprising the steps of:

receiving a clock synchronisation signal from said second mobile electronic terminal device;

generating a plurality of keys derived from said key, wherein said keys are suitable to partially access said content;

sending said keys to said second mobile electronic terminal device in accordance with said clock synchronisation signal.

17. Software tool comprising program code means stored on a computer readable medium for carrying out the method of claim 1 when said software tool is run on a computer or network device.

18. Computer program product comprising program code means stored on a computer readable medium for carrying out the method of claim 1 when said program product is run on a computer or network device.

19. Computer program product comprising program code, downloadable from a server for carrying out the method of claim 1 when said program product is run on a computer or network device.

20. Computer data signal embodied in a carrier wave and representing a program that instructs a computer to perform the steps of the method of claim 1.

4. Method for sharing content protected by digital rights management DRM between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, comprising the steps of:

sending a request for sharing of said content to said first mobile electronic terminal device;

receiving from said first mobile electronic terminal device in response to said request

a confirmation about authorization of said first mobile electronic terminal device to access said content;

a data signal indicative of at least one condition said second mobile electronic terminal device has to meet in order to be authorized to access said content; and

authorizing access to said content based on said confirmation and said condition being met.

5. Method according to claim 4, further comprising the step of:

receiving said content from said first mobile electronic terminal device.

6. Method according to claim 4, wherein said confirmation comprises a key for accessing said content.

7. Method according to claim 4, further comprising the step of:

denying authorization of access to said content if said condition is not met for a predetermined time.

8. Method according to claim 4, further comprising the step of:

denying authorization of access to said content if not meeting said condition has occurred a predetermined number of times.

9. Method according to claim 4, wherein said request comprises a user identification of said second mobile electronic terminal device.

10. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device having a network connection with said first mobile electronic terminal device.

11. Method according to claim 10, wherein said network connection is a wireless connection.

12. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device not exceeding a predetermined number of accesses to said content.

13. Method according to claim 4, wherein said at least one condition is said second mobile electronic terminal device not exceeding a predetermined time of access to said content.

14. Method for sharing content protected by digital rights management (DRM) between a first mobile electronic terminal device and a second mobile electronic terminal device, wherein said first mobile electronic terminal device is authorized for accessing said content, and said mobile electronic terminal devices are part of a location based service network, comprising the steps of:

receiving a request for sharing of said content from said second mobile electronic terminal device, said request containing an identification of said second mobile electronic terminal device, and an identification of said first mobile electronic terminal device;

comparing the location of said first mobile electronic terminal device and the location of said second mobile electronic terminal device in said network based on said identifications; and

sending an authorization to access said content to said second mobile electronic terminal device if said locations of said two mobile electronic terminals are in a predetermined area.

15. Method according to claim 14, wherein said authorization comprises a key to access said content.

16. Method according to claim 14, further comprising the steps of:

performing cyclic repeats of said comparing of said locations of said two mobile electronic terminals; and

denying authorization to access said content if said locations of said two mobile electronic terminals are not in a predetermined area.

21. Mobile electronic terminal device for sharing content protected by digital rights management (DRM) with a second mobile electronic terminal device, wherein said mobile electronic terminal device may be authorized for accessing said content, comprising:

a component adapted for transceiving data; and

a component for generating a data signal;

wherein said data signal generating component is adapted to generate a data signal indicative of at least one condition said second mobile electronic terminal device has to meet to be authorized for access to said content and being based on said authorization of said mobile electronic terminal device to access said content, and said transceiving component is adapted to send said data signal to said second mobile electronic terminal device.

22. Device according to claim 21, further comprising a component adapted to send said content to said second mobile electronic terminal device.

23. Device according to claim 21, wherein a key for accessing said content is provided in said first mobile electronic terminal device, and said transceiving component is adapted to send said key to said second mobile electronic terminal device.

24. Device according to claim 23, further comprising a component adapted to generate a plurality of keys derived from said key wherein each of said keys is suitable to partially access said content, wherein said transceiving component is adapted to receive a clock synchronisation signal from said second mobile electronic terminal device and send said keys to said second mobile electronic terminal device in accordance to said clock synchronisation signal.

29. Device according to claim 21, wherein said transceiving component comprises a local area network transceiver.

30. Device according to claim 21, wherein said transceiving component comprises a wide area network transceiver.

25. Mobile electronic terminal device for sharing content protected by digital rights management (DRM) from a first mobile electronic terminal device, wherein said first mobile electronic terminal device may be authorized for accessing said content, comprising:

a component adapted for transceiving data; and

an authorization component;

wherein said transceiving component is adapted to receive a data signal indicative of a condition, and said authorization component is adapted to authorize access to said content based on said condition being met.

26. Device according to claim 25, further comprising a component adapted to receive said content.

27. Device according to claim 25, wherein said transceiving component is adapted to receive said key.

28. Device according to claim 25, further comprising a component adapted to send a clock synchronisation signal, wherein said transceiving component is adapted to receive keys in accordance to said clock synchronization signal and said authorization component is adapted to authorize access to said content based on said keys.