| 摘要 |
PURPOSE: A multi-channel broadcasting system using a broadcasting receiving device capable of multi-channel division and a service method therefor are provided to enhance the use degree of frequency by servicing a plurality of similar broadcasting channels through one frequency. CONSTITUTION: A frequency mixing unit(200) receives a plurality of broadcasting channels and compresses frequencies of the received broadcasting channels. A multi-channel modulating unit(300) modulates a plurality of the compressed frequencies into one broadcasting frequency signal. A transmitting unit(400) transmits the broadcasting frequency signal to the air. A broadcasting receiving device(500) has a frequency adjusting unit(510) for retrieving a frequency band and selecting one signal, a signal receiving unit(520) for receiving the broadcasting frequency signal transmitted through the transmitting unit(400), and a signal modulating unit(530) for modulating the received broadcasting frequency signal. The broadcasting receiving device(500) has a channel separating unit(540) for separating a plurality of broadcasting channels from the received broadcasting frequency signal, and a sound modulating unit(550) for adjusting a sound with respect to each broadcasting channel. The broadcasting receiving device(500) has a channel selecting unit(560) for selecting one among the separated broadcasting channels, and a channel signal transmitting unit(570) for transmitting the selected broadcasting channel to a radio(600) by wireless.
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