| 摘要 |
PURPOSE: An interface device is provided to supply a desired signal to users by using a control system of a central processing unit including a TV which receives and transmits a signal with an input of a mixing signal. CONSTITUTION: A first and a second modulators(20, 21) each input output signals from a first and a second external device(10, 11) and each modulates the output signals. A first mixer(30) mixes modulated signals out putted from the first and the second modulator(20, 21) and an RF signal inputted from the external. A central processing unit(50) outputs a control signal. A second mixer(40) mixes the mixing signal out putted from the first mixer(30) and the control signal out putted from the central processing unit(50). A TV receives the mixing signal out putted from the second mixer(40), and receives and transmits a signal.
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