BROADCASTING FOR WARNING DISASTER USING SATELLITE

摘要

PURPOSE: A disaster warning broadcasting system using a satellite is provided to transmit TDM(Time Division Multiplexing) signal for disaster warning through residual band except for band for transmitting broadcasting CDM(Code Division Multiplexing) signal among band of KU-band satellite signal. CONSTITUTION: An EAS(Emergency Alert System) server transmits a disaster warning signal. A DMB(Digital Multimedia Broadcasting) transmitter(10) transmits the disaster warning signal with a broadcasting data stream. A satellite(20) relays the transmission signal of the DMB transmitter. A DMB relay unit(30) receives a relayed signal. A user terminal(40) reproduces the broadcasting stream or reproduces the disaster warning data by decoding the transmission signal of the DMB relay device.