| 摘要 |
PROBLEM TO BE SOLVED: To provide an output signal switching device capable of outputting an RF signal or a television signal from an RF input terminal while preventing the RF signal from an RF modulator and the television signal from an antenna input terminal from interfering with each other. SOLUTION: In a television mode, since a relay 3 for signal opening is turned on and the attenuation operation of an attenuator 4 is stopped, the television signal from the antenna input terminal 1 is outputted from the RF output terminal 5. In an RF output mode, the relay 3 is turned off and the attenuator 4 performs an attenuation operation, the television signal entered into the antenna input terminal 1 becomes an open state, and is not guided to the RF output terminal 5. COPYRIGHT: (C)2005,JPO&NCIPI
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