Digital rights management for content rendering on playback devices

• US 7,882,034 B2
• Filed: 11/21/2003
• Issued: 02/01/2011
• Est. Priority Date: 11/21/2003
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: RealNetworks, Inc.
• Inventors: Hefta-Gaub, Bradley D., Hug, Joshua D.
• Primary Examiner(s): Fischer; Andrew J.
• Assistant Examiner(s): MURDOUGH, JOSHUA A
• Application Number:
  US10/719,981
• Publication Number:
  US 20050114896A1
• Time in Patent Office: 2,629 Days
• Field of Search: 380/211
• US Class Current: 705/52
• CPC Class Codes: H04N 21/25816 involving client authentication restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06
• CPC Class Codes: H04N 21/4108 characterised by an identification number or address, e.g. local network address protecting specific internal or external computer components using identification number G06F21/73; network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/44204 Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched monitoring of user activities for profile generation for accessing a video database G06F16/739; protecting generic digital content where the protection is independent of the precise nature of the content G06F21/10; arrangements for monitoring the use made of the broadcast services in broadcast systems H04H60/31
• 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
• CPC Class Codes: H04N 21/6334 for authorisation, e.g. by transmitting a key wireless communications network key management H04W12/04; wireless communications network access security H04W12/08
• CPC Class Codes: H04N 7/17309 Transmission or handling of upstream communications

Abstract

In one embodiment, an elapsed playback time associated with a digital playback device is determined and compared to an allotted playback time for the device. In the event the elapsed and allotted playback times satisfy a predetermined relationship with respect to one another, further content playback on the device may be denied or otherwise regulated until content playback rights intrinsic to the device are renewed or “recharged”.

Claims

1. In a client device, a method comprising:

receiving a request for playback of digital audio or video content stored on the device, wherein the requested digital audio or video content is included within a particular body of content comprising a plurality of digital audio or video contents accessible by the client device;

determining an allotted playback duration granted to the device for playing back the particular body of content;

determining an elapsed playback duration for the device, the elapsed playback duration representing an amount of time previously consumed by the device while rendering the digital audio or video contents of the particular body of content;

determining whether a predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is satisfied; and

regulating playback of the particular body of content if the predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is determined to be satisfied.

2. The method of claim 1, wherein the request for playback of digital audio or video content is received via a user input device.

3. The method of claim 1, wherein playback of the requested digital audio or video content track is denied if it is determined that the relationship between the allotted playback duration and elapsed playback duration is satisfied.

4. The method of claim 3, further comprising:

facilitating playback of the requested digital audio content if it is determined that the elapsed playback duration does not exceed the allotted playback duration.

5. The method of claim 3, further comprising:

indicating to the user at least one of the elapsed playback duration and the allotted playback duration.

6. The method of claim 3, further comprising:

indicating to the user the elapsed playback duration in relation to the allotted playback duration.

7. The method of claim 6, wherein the digital audio or video content is encoded in accordance with at least one of an advanced audio encoding algorithm, an adaptive multi-rate encoding algorithm and an MP3 encoding algorithm.

8. The method of claim 1, further comprising:

denying playback of the requested digital audio or video content if the elapsed playback duration added to a run length associated with the requested content exceeds the allotted playback duration.

9. The method of claim 1, further comprising:

denying playback of additional digital audio or video content stored on the device in addition to the requested digital audio or video content if it is determined that the elapsed playback duration is equal to or exceeds the allotted playback duration.

10. The method of claim 9, wherein the allotted playback duration is increased based upon entitlements granted to the user by a service provider.

11. The method of claim 1, wherein the allotted playback duration is determined based upon rights intrinsic to the device.

12. The method of claim 1, wherein the allotted playback duration is determined based upon data received from a content server.

13. The method of claim 1, further comprising:

periodically increasing the allotted playback duration prior to the allotted playback duration exceeding the elapsed playback duration.

14. In a digital content rendering device, a method comprising:

rendering one of a plurality of digital audio or video content items within a particular body of content;

determining an elapsed playback duration for which the digital audio or video content of the particular body of content has been rendered; and

regulating further content rendering of the particular body of content by the digital content rendering device if the elapsed playback duration satisfies a predetermined relationship with respect to an allotted playback duration granted to the device for playing back the particular body of content.

15. The method of claim 14, wherein the elapsed playback duration represents an amount of time for which content of the particular body of content has been rendered by the digital content rendering device.

16. The method of claim 14, wherein regulating comprises denying further content rendering of the particular body of content by the digital content rendering device if the elapsed playback duration satisfies a predetermined relationship with respect to the allotted playback duration.

17. The method of claim 16, wherein the allotted playback duration represents at least one of an amount of render time for which content of the particular body of content may be rendered on the digital content rendering device, and a quantity of data that may be processed by the digital content rendering device to render content of the particular body of content on the device.

18. The method of claim 17, further comprising:

facilitating playback of the digital audio content of the particular body of content if it is determined that the elapsed playback duration does not exceed the amount of render time corresponding to allotted playback right.

19. In a digital content rendering device, a method comprising:

identifying a playback right granted to the digital content rendering device representing an allotted measure of a plurality of digital audio or video content within a particular body of content that may be rendered by the digital content rendering device;

determining whether the allotted measure of content for the particular body of content has been rendered by the device; and

preventing further content rendering from the particular body of content on the digital content rendering device if it is determined that the allotted measure of digital audio or video content for the particular body of content that may be rendered by the digital content rendering device has previously been rendered by the device.

20. The method of claim 19, wherein the allotted measure of the plurality of digital audio or video content within the particular body of content that may be rendered represents an amount of time that the digital content rendering device may render the digital audio or video content of the particular body of content.

21. The method of claim 19, wherein the playback right associated with the digital content rendering device is further associated with a user, and wherein the user is denied playback of any additional content items by the digital content rendering device once it is determined that the allotted measure of digital audio or video content for the particular body of content that may be rendered by the digital content rendering device has previously been rendered by the device.

22. The method of claim 21, wherein the playback right is determined based upon a subscription agreement between the user and a content provider.

23. A digital content rendering apparatus comprising:

a storage medium having stored therein programming instructions designed to enable the apparatus to

receive a request for playback of digital audio or video content stored on the apparatus, wherein the requested digital audio or video content is included within a particular body of content comprising a plurality of digital audio or video contents accessible by the apparatus,

determine an allotted playback duration granted to the apparatus for playing back the particular body of content,

determine an elapsed playback duration for the apparatus, the elapsed playback duration representing an amount of time previously consumed by the apparatus while rendering the digital audio or video contents of the particular body of content,

determine whether a predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the apparatus is satisfied, and

regulate playback of the particular body of content if the predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the apparatus is determined to be satisfied; and

at least one processor coupled with the storage medium to execute the programming instructions.

24. A digital content rendering apparatus comprising:

a storage medium having stored therein programming instructions designed to enable the apparatus to

render one of a plurality of digital audio or video content items within a particular body of content,

determine an elapsed playback duration for which the digital audio or video content of the particular body of content has been rendered, and

regulate further content rendering of the particular body of content by the digital content rendering apparatus if the elapsed playback duration satisfies a predetermined relationship with respect to an allotted playback duration granted to the digital content rendering apparatus for playing back the particular body of content; and

at least one processor coupled with the storage medium to execute the programming instructions.

25. A digital content rendering apparatus comprising:

a storage medium having stored therein programming instructions designed to enable the digital content rendering apparatus to

identify a playback right granted to the digital content rendering apparatus representing an allotted measure of a plurality of digital audio or video content within a particular body of content that may be rendered by the digital content rendering apparatus,

determine whether the allotted measure of content for the particular body of content has been rendered by the apparatus, and

prevent further content rendering from the particular body of content on the digital content rendering apparatus if it is determined that the allotted measure of digital audio or video content for the particular body of content that may be rendered by the digital content rendering apparatus has previously been rendered by the apparatus; and

at least one processor coupled with the storage medium to execute the programming instructions.

26. A machine readable medium having stored thereon machine executable instructions, the execution of which to implement a method comprising:

receiving a request for playback of digital audio or video content stored on the device, wherein the requested digital audio or video content is included within a particular body of content comprising a plurality of digital audio or video contents accessible by the client device;

determining an allotted playback duration granted to the device for playing back the particular body of content;

determining an elapsed playback duration for the device, the elapsed playback duration representing an amount of time previously consumed by the device while rendering the digital audio or video contents of the particular body of content;

determining whether a predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is satisfied; and

regulating playback of the particular body of content if the predetermined relationship between the elapsed playback duration and the allotted playback duration granted to the device is determined to be satisfied.

27. A machine readable medium having stored thereon machine executable instructions, the execution of which to implement a method comprising:

rendering one of a plurality of digital audio or video content items within a particular body of content;

determining an elapsed playback duration for which the digital audio or video content of the particular body of content has been rendered; and

regulating further content rendering of the particular body of content by the digital content rendering device if the elapsed playback duration satisfies a predetermined relationship with respect to an allotted playback duration granted to the device for playing back the particular body of content.

28. A machine readable medium having stored thereon machine executable instructions, the execution of which to implement a method comprising:

identifying a playback right granted to the digital content rendering device representing an allotted measure of a plurality of digital audio or video content within a particular body of content that may be rendered by the digital content rendering device;

determining whether the allotted measure of content for the particular body of content has been rendered by the device; and

preventing further content rendering from the particular body of content on the digital content rendering device if it is determined that the allotted measure of digital audio or video content for the particular body of content that may be rendered by the digital content rendering device has previously been rendered by the device.