BROADCAST DATA TRANSCEIVING METHOD IN A DIGITAL BROADCAST SYSTEM CAPABLE OF PROVIDING A NEW BROADCAST SERVICE USING ADDITIONAL DATA IN THE DIGITAL BROADCAST SYSTEM AND A DEVICE THEREOF

摘要

PURPOSE: A broadcast data transceiving method in a digital broadcast system and a device thereof are provided to obtain additional transmission capacity while maintaining reverse-compatibility with an ATSC mode.;CONSTITUTION: A detector(362) determines whether a level of a main data symbol belongs to a first group. When the level of the main data symbol belongs to the first group, a mapping unit(366) maps the main data symbol in an extension level using a modulation value of additional data. When the level of the main data symbol belongs to a second group, a bypass unit(364) maintains the level of the main data symbol.;COPYRIGHT KIPO 2012