Right object renewal method and apparatus for right-protected broadcast service

An apparatus renewing a right-protected broadcast service using a long term right object having a purchased license duration and a short term right object having a temporary license duration which is shorter than the purchased license duration, said apparatus comprising:

• a storage unit which stores the short term right object;
• a broadcast reception unit which receives broadcast data on a specific broadcast channel and decodes the broadcast data using the short term right object;
• a control unit which checks whether the time to expiration of a previously issued short term right object is less than a predetermined threshold value, requests, when the time to expiration of the previously issued short term right object is less than the threshold value, a server to issue a new short term right object, and renews the temporary license duration using the new short term right object issued by the server;
• and
• a radio frequency unit which establishes a communication channel with the server and receives the new short term right object from the server.

An apparatus comprising;

• a processor in communication with a memory, the memory including code which when accessed by the processor causes the processor to:
• determining whether a time to expiration of a previously issued short term right object is less than a predetermined threshold value;
• requesting an issuance of a new short term right object, when the time to expiration of the previously issued short term right object is less than the threshold value;
• and
• renewing a temporary license duration associated with said short term right object using the new short term right object, wherein the short term right object time duration is shorter than a time duration of a longer term right object.