METHOD, DEVICE, AND SYSTEM FOR DOWNLOADING CONTENTS ON THE BASIS OF A RIGHTS VERIFICATION

• US 20140230074A1
• Filed: 08/07/2012
• Published: 08/14/2014
• Est. Priority Date: 09/29/2011
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Lee, Minsoo, Yang, Seungryul, Park, Jangwoong
• Granted Patent: US 9,589,112 B2
• Time in Patent Office: Days
• US Class Current: 726/27
• 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: G06Q 30/018 Certifying business or products

Abstract

The present invention relates to a method, device, and system for downloading contents on the basis of a rights verification. The content download method is performed by a first device, which obtains digital rights management (DRM) information on an asset from asset metadata associated with the asset, obtains DRM capabilities on a second device, performs a rights verification for using the asset through the second device on the basis of the DRM information and the DRM capabilities that are obtained, and transmits a queuing request for staging the asset through the second device on the basis of the results of the rights verification. Thus, to enable the consumption of contents, the rights verification may be performed on the basis of device capabilities and content information, and contents may be stably and effectively downloaded using a target device on the basis of the verified results.

Claims

1. A method for downloading content, which is performed by a first device, comprising:

obtaining digital rights management (DRM) information for an asset from asset metadata associated with the asset;

obtaining a DRM capability on a second device;

performing rights check for using the asset through the second device based on the DRM information and the DRM capability that are obtained; and

transmitting a queue request for staging the asset through the second device to the second device based on the rights check.

2. The method of claim 1, further comprising:

receiving a content list from a server; and

selecting at least one asset based on the received content list.

3. The method of claim 1, further comprising:

transmitting a device capability request requesting a capability of the second device to the second device;

receiving a device capability response including the capability of the second device from the second device; and

selecting at least one asset suitable for staging through the second device based on the received device capability.

4. The method of claim 1, further comprising:

checking the DRM information obtained from the asset metadata associated with the asset; and

determining whether the asset is protected by the DRM, based on the checking the DRM information.

5. The method of claim 1, wherein the DRM information of asset is specified

by at least one of DASH (Dynamic Adaptive Streaming over HTTP) MPD (Media Presentation Description) information, UPnP(Universal Plug and Play) CDS(Content Directory Service) metadata, MIME (Multipurpose Internet Mail Extension) type information.

6. The method of claim 1, wherein the rights check is used when the first device requests staging an asset through a second device which directly consumes the asset, or the first device which directly consumes the asset request an asset staged through the second device, performed before the queue request enters into an active state, and when the rights check is failed, a queue request requiring the rights check is transited to a blocked state.

7. The method of claim 1, wherein the obtaining of the DRM capability on the second device includes

obtaining the DRM capability on the second device from a content format value of UPnP device description or UPnP CDS protocol information of the second device.

8. The method of claim 1, wherein the obtaining of the DRM capability on the second device includes

obtaining the DRM capability on the second device from a specific field included in the device capability received from the second device through exchanging of the device capability with the second device,

wherein the specific field is a supporting media profile field, and the information is a media profile.

9. The method of claim 1, wherein the performing of the rights check for using the asset through the second device based on the DRM information and the DRM capability that are obtained includes

performing DRM capability check verifying whether the second device can support a DRM system protecting the asset based on the DRM information and the DRM capability on the second device that are obtained;

and

performing license check verifying whether the second device can obtain a license for using the asset.

10. The method of claim 9, wherein the performing of the DRM capability check of the second device includes

checking whether the second device supports the DRM protecting the asset, by comparing asset content protecting demand and policy according to the DRM capability of the second device and the DRM information of the asset with the DRM capability of the second device,

wherein the DRM information of the asset is specified by one of DASH MPD information, UPnP CDS metadata, and MIME type information.

11. The method of claim 1, further comprising:

performing device discovery based on a recently connected device list; and

discovering the second device based on the device discovery.

12. The method of claim 11, wherein the performing of the device discovery includes

storing the recently connected device list including information about a device which is recently connected through the network;

unicasting a first device discovery request to another device included in the recently connected device list, when connected to the network;

receiving a first device discovery response to the first unicast device discovery request from another device; and

updating the recently connected device list based on the received first device discovery response.

13. The method of claim 12, further comprising:

updating an active device list representing an active state device based on the received first device discovery response; and

displaying at least one of the updated active device list and the updated recently connected device list,

wherein the selecting of the second device includes

selecting the second device in one of the displayed active device list and the updated recently connected device list.

14. A device, comprising:

an application configured to select an asset and a target device; and

a queue and policy engine configured to obtain DRM information for an asset from asset metadata associated with the asset, obtain a DRM capability on a second device, perform rights check for using the asset through the second device based on the DRM information and the DRM capability that are obtained, and transmit a queue request for staging the asset through the second device to the second device based on the rights check.

15. The device of claim 14, wherein the queue and policy engine verifies the DRM information obtained from the asset metadata associated with the asset, and determines whether the asset is protected by the DRM based on the checking of the DRM information.

16. The device of claim 14, wherein the DRM information of asset is specified

by at least one of DASH (Dynamic Adaptive Streaming over HTTP) MPD (Media Presentation Description) information, UPnP(Universal Plug and Play) CDS(Content Directory Service) metadata, MIME (Multipurpose Internet Mail Extension) type information.

17. The device of claim 14, wherein the queue and policy engine performs of the rights check for using the asset through the second device based on the DRM information and the DRM capability that are obtained, performs DRM capability check verifying whether the second device can support a DRM system protecting the asset based on the DRM information and the DRM capability on the second device that are obtained, and performs license check verifying whether the second device obtains a license for using the asset.

18. A system, comprising:

a second device; and

a first device configured to obtain DRM information for an asset from asset metadata associated with the asset, obtain a DRM capability on a second device, perform rights check for using the asset through the second device based on the DRM information and the DRM capability that are obtained, and transmit a queue request of requesting staging the asset through the second device to the second device based on the rights check.

19. The system of claim 18, wherein the first device verifies the DRM information obtained from the asset metadata associated with the asset, and determines whether the asset is protected by the DRM based on the checking of the DRM information.

20. The system of claim 18, wherein the DRM information of asset is specified

by at least one of DASH (Dynamic Adaptive Streaming over HTTP) MPD (Media Presentation Description) information, UPnP(Universal Plug and Play) CDS(Content Directory Service) metadata, MIME (Multipurpose Internet Mail Extension) type information.