Apparatus and method for sharing content between devices by using domain drm

An apparatus for sharing content between devices by using a domain DRM, comprising:

• a domain management module for requesting a domain server to create a domain and managing a domain ID and a domain key transmitted from the domain server through domain join;
• a device management module for making a request to the domain server for device registration and registering a device through authentication;
• a user management module that has information about users who use the device;
• a content management module for providing DRM content information to manage domain information about stored content and change the content into a domain DRM in conjunction with the domain management module;
• and
• a DRM management module for managing information of the DRM in the device and changing the DRM content stored in the content management module into a domain DRM in conjunction with the domain management module, or converting the content comprised of a domain DRM into a format of DRM content installed in the device.

A method for sharing content between devices by using a domain DRM, comprising:

• upon receipt of a request to make a domain from a specific domain client, performing domain creation through device authentication and transmitting information of the creation of the corresponding domain to the specific domain client;
• upon receipt of a request for join to the created domain from the domain client, performing domain join through authentication;
• and
• relaying such that DRM content stored in each domain client is converted into domain DRM content and domain DRM license so as to support content search among domain clients who joined to the domain and enable play of searched DRM content.

A method for sharing content between devices by using a domain DRM, comprising:

• upon requesting a domain server to create a domain, receiving domain creation information through device authentication;
• converting stored DRM content into a domain DRM content and license format and registering converted domain DRM content and license in the created domain;
• and
• permitting a specific domain client who joined to the created domain to search for content and transmitting the corresponding content of the domain DRM content and license format converted in response to a content request to the specific domain client.

A method for sharing content between devices by using a domain DRM, comprising:

• selecting desired content by performing content search via a home network;
• if a device has not yet joined to the domain for the selected content, making a request for join to a created domain through a domain server;
• if the device has joined to the created domain through device authentication of the domain server, receiving a corresponding domain ID and key;
• and
• requesting the domain client storing the selected content to receive the corresponding content of the domain DRM content and license format.