SYSTEM AND DEVICE AND METHOD OF SETTING PRESENTATION TIME STAMP FOR SYNCHRONIZED IMAGE FRAME WITH COMPARING IMAGE FRAME ON BROADCASTING-COMMUNICATION PROGRAM

摘要

Disclosed herein is a system and method for synchronizing broadcast content with supplementary information. The supplementary information synchronization system of the present invention detects synchronization information in which a time offset between broadcast content, provided by a Content Provider (CP), and broadcast content, received over a broadcasting network, is considered, by comparing the broadcast content, received from over the broadcasting network, and synchronization information, transmitted from a supplementary information generating apparatus, and extracts screen information corresponding to the time at which an integrated terminal requested supplementary information based on the Present Time Stamp (Start) (PTS) information of broadcast content, received in response to a request for the supplementary information from the integrated terminal and corresponding to the time at which the supplementary information was requested, and the synchronization information in which the time offset is considered.