Abstract: A method and apparatus for a digital broadcasting service may allow direct and real-time control of a digital broadcasting receiver. A service providing server inserts a content control access criteria descriptor into a transport stream and transmits content and the content control access criteria descriptor to the receiver through the transport stream. The receiver receives the transport stream and processes the content according to the content control access criteria descriptor, which can contain lock control information and coupon provision information. The lock control information indicates whether a control function of the receiver is locked or unlocked for specific content. The coupon provision information indicates whether a coupon available for the purchase of pay content is granted depending on execution of specific content.

Abstract: A method of providing DRM content, including transmitting, by a content issuer, when a request for a specific main content of a communication terminal is input, a DRM content including the main content and a preset sub-content corresponding to the main content to the communication terminal; transmitting, by a rights issuer, a rights object having constraint condition information for securing reproduction of the sub-content to the communication terminal; and reproducing, by the communication terminal, when the DRM content and the rights object are received, the sub-content by analyzing the rights object and reproducing, when reproduction of the sub-content is complete, the main content. Reproduction of a sub-content in a communication terminal can be secured through constraint condition information of a rights object, and waste of resources required for providing a sub-content can be suppressed.

Abstract: A method and apparatus for a digital broadcasting service may allow direct and real-time control of a digital broadcasting receiver. A service providing server inserts a content control access criteria descriptor into a transport stream and transmits content and the content control access criteria descriptor to the receiver through the transport stream. The receiver receives the transport stream and processes the content according to the content control access criteria descriptor, which can contain lock control information and coupon provision information. The lock control information indicates whether a control function of the receiver is locked or unlocked for specific content. The coupon provision information indicates whether a coupon available for the purchase of pay content is granted depending on execution of specific content.