DRM interoperable system

• US 8,082,350 B2
• Filed: 12/31/2008
• Issued: 12/20/2011
• Est. Priority Date: 03/06/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Jeong, Man-soo, Park, Il-gon, Pak, Koo-yong, Chung, Min-gyu, Cho, Sung-hyun, Kim, Soo-jung, K, Kiran Kumar
• Primary Examiner(s): JEAN GILLES, JUDE
• Application Number:
  US12/347,426
• Publication Number:
  US 20090248848A1
• Time in Patent Office: 1,084 Days
• Field of Search: 709/223, 709/224, 709/206, 709/208, 709/217, 709/246, 709/227, 709/209, 709/220, 709/229
• US Class Current: 709/227
• CPC Class Codes: G06F 21/1012 to domains
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources
• CPC Class Codes: H04L 63/166 at the transport layer
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: Y10S 707/99931 Database or file accessing
• CPC Class Codes: Y10S 707/99932 Access augmentation or optimizing
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation
• CPC Class Codes: Y10S 707/99935 Query augmenting and refining, e.g. inexact access
• CPC Class Codes: Y10S 707/99936 Pattern matching access
• CPC Class Codes: Y10S 707/99937 Sorting
• CPC Class Codes: Y10S 707/99938 Concurrency, e.g. lock management in shared database
• CPC Class Codes: Y10S 707/99939 Privileged access
• CPC Class Codes: Y10S 707/9994 Distributed or remote access
• CPC Class Codes: Y10S 707/99941 Database schema or data structure

Abstract

A DRM interoperable system is provided. The DRM interoperable system includes: a domain manager which manages a domain; first and second devices which are authenticated by the domain manager and registered in the domain; and a control unit which gathers information on entities that are to participate in transmission of data when the first device requests the second device to transmit the data, controls at least two entities so that a chain including the at least two entities is constructed by using the gathered information on the entities, and controls the at least two entities so that a plurality of data is transmitted to the second device through the chain. Accordingly, it is possible to provide a DRM interoperable environment in which data can be effectively transmitted.

Claims

1. A system comprising:

devices associated with a domain, wherein the devices include a first device and a second device, the first device configured to transmit content or a license of the content to the second device by establishing a secure authenticated channel with the second device; and

a controller configured to perform a function of a local master for the domain, wherein the controller has a highest capability among the devices and is elected by performing an election competition based on comparing, among the devices, the capability of each device with each other.

2. The system of claim 1, wherein:

if the controller enters a failure state, the devices perform the election competition for electing a new controller, and

the controller is replaced by the new controller elected by the election competition for electing the new controller.

3. The system of claim 1, wherein performing the election competition further comprises:

transmitting, among the devices associated with the domain, data describing a capability of each device;

comparing, among the devices, the capability of each device with each other using the transmitted data; and

electing, as the elected controller, a device associated with the domain with a capability higher than a capability of any other device associated with the domain.