| 摘要 |
PURPOSE: An additional information providing method of broadcast contents is provided to prevent interruption or suspend of broadcast contents watching environment of user even when the user uses the additional information. CONSTITUTION: An additional information providing method of broadcast contents comprises the following steps: A synchronization server detects n target additional information corresponding to received n viewing data(S820); the synchronization server detects a part of detected n target additional information as n transmission target additional information(S830); the synchronization server transmits the n transmission target additional information to a watching data generator(S840); the watching data generator creates broadcast data(S850); and the watching data generator transmits the synchronized data to a user terminal after synchronization of the broadcast data and the received transmission target additional information(S860).
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