System for providing sub-data of broadcasting, device and method for providing sub-data of broadcasting, and recording medium thereof

摘要

PURPOSE: A broadcasting addition data separation supplying system and a method thereof are provided to supply a broadcasting addition data service through a terminal without disturbance of watching TV. CONSTITUTION: A broadcasting supplying unit(10) supplies addition broadcasting data. A first terminal(30) receives broadcasting data and broadcasting addition data from the broadcasting supplying unit. The first terminal outputs the broadcasting data. The first terminal transmits the broadcasting addition data according to a broadcasting addition data request of one or more second terminals(50). The second terminal receives the broadcasting addition data from the first terminal.