| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retransmission device for television broadcasting, which is installed at a head side of a community antenna television system to prevent restriction on locations and complexity of installation work, in use. Ž<P>SOLUTION: The retransmission device for television broadcasting includes: input ports PT1, PT2 for inputting terrestrial broadcast signals received by antennas 101, 102; an input port PT4 for inputting satellite broadcast signals received by an antenna 104; a terrestrial broadcast signal level adjustment section for adjusting the terrestrial broadcast signals input by the input ports PT1, PT2 to an appropriate level for each broadcast channel; a mixer for mixing the terrestrial broadcast signals of which the level is adjusted by the terrestrial broadcast signal level adjustment section with the satellite broadcast signals input by the input port PT4 or the satellite broadcast signals obtained by processing the satellite broadcast signals input by the input port PT4; and a DC power superimposition section for superimposing DC power to the input port PT4 to supply DC power to the antenna 104. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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