Legacy device registering method, data transferring method and legacy device authenticating method

A device comprising:

• an interface configured to:
• receive, from a legacy device, unique information of the legacy device uniquely identifying the legacy device;
• and
• a processor configured to:
• check a list that includes unique information of legacy devices that are registrable in a Digital Rights Management (DRM) interoperable domain, using the received unique information of the legacy device;
• determine whether the unique information of the legacy device is on the list;
• and
• if the unique information of the legacy device is not on the list, prevent the legacy device from being registered in the domain, or else request the manager of the domain to register the legacy device
• wherein the legacy device, when registered with the domain, acts as a client in the domain, and
• wherein the client
• transmits to a controller, a request message that requests transmission of multiple content items from a source to a destination and comprises a transport session identifier that identifies a transport session, wherein
• the transmission of the multiple content items is based on a transport protocol that supports transmission of the multiple content items in a single session identified by the transports session identifier,
• each content item is divided multiple frames, each frame having a header of N bits, N being an integer greater than or equal to 2, the header indicating a length of a payload of the corresponding frame,
• an index identifying each content item is inserted before the header of a first frame of each content item,
• an end of each content item is indicated by a separator constructed with a predetermined number of bits having first values, and
• an end of the transmission of the multiple content items is indicated by an end-of-transmission string constructed with a predetermined number of bits having second values, and
• receives an event message from the controller, the event message indicating a current status of transmission of one or more of the multiple content items.

A system comprising:

• one or more computers;
• and
• A non-transitory computer-readable storage coupled to the one or more computers having instructions
• stored thereon which, when executed by the one or more computers, causes the one or more computers to perform operations comprising:
• receiving, from a legacy device, unique information of the legacy device uniquely identifying the legacy device, checking a list that includes unique information of legacy devices that are registrable in a Digital Rights Management (DRM) interoperable domain, using the received unique information of the legacy device;
• determining whether the unique information of the legacy device is on the list;
• and if the unique information of the legacy device is not on the list, preventing the legacy device from being registered in the domain, or else requesting the manager of the domain to register the legacy device wherein the legacy device, when registered with the domain, acts as a client in the domain, and wherein the client transmits to a controller, a request message that requests transmission of multiple content items from a source to a destination and comprises a transport session identifier that identifies a transport session, wherein the transmission of the multiple content items is based on a transport protocol that supports transmission of the multiple content items in a single session identified by the transports session identifier, each content item is divided multiple frames, each frame having a header of N bits N being an integer greater than or equal to 2, the header indicating a length of a payload of the corresponding frame, an index identifying each content item is inserted before the header of a first frame of each content item, an end of each content item is indicated by a separator constructed with a predetermined number of bits having first values, and an end of the transmission of the multiple content items is indicated by an end-of-transmission string constructed with a predetermined number of bits having second values, and receives an event message from the controller, the event message indicating a current status of transmission of one or more of the multiple content items.