Method and device for consuming rights objects having inheritance structure in environment where the rights objects are distributed over plurality of devices

• Main Authors: OH YUN-SANG, JUNG KYUNG-IM, LEE SUK-BONG
• Format: Patent
• Language: English
• Published: 13.07.2006
• Subjects: CALCULATING; COMPUTING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; PHYSICS; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

A digital rights management method and device are provided. To implement the DRM method and device, there is provided a master device including a storage module which stores a plurality of rights objects (ROs) having an inheritance structure, a detection module which detects the storage module for an RO needed for playing back a predetermined content object, a message generation module which, if the detection module fails to discover the RO needed for playing back the predetermined content object from the storage module, generates an RO request message, a device interface module which transmits the RO request message to a slave device and receives the RO needed for playing back the predetermined content object from the slave device, and a playback module which plays back the predetermined content object using at least one of the RO detected from the storage module and the RO received from the slave device.