APPARATUS FOR RETRIEVING ADDITIONAL DATA BASED ON DIGITAL DATA BROADCASTING AND METHOD THEREFOR

摘要

PURPOSE: An apparatus for retrieving additional data based on digital data broadcasting and a method therefor are provided to easily offer information for which a user wishes on the basis of an additional data ID by systematically arranging data broadcasting information and transmitting arranged data broadcasting information. CONSTITUTION: A contents storing unit(111) stores additional data, and generates additional data information. A control unit(112) receives additional data information generated in the contents storing unit(111), generates meta data for encapsulation, and controls the contents storing unit(111) and a contents encapsulating unit(113). The contents encapsulating unit(113) encapsulates the additional data according to the meta data generated in the control unit(112). A remultiplexing/transmitting unit(114) remultiplexes the additional data encapsulated in the contents encapsulating unit(113), an audio/video transport stream and PSIP/SI(Program and System Information Protocol/Service Information), and transmits the remultiplexed data to a terminal.