| 摘要 |
A high frequency switch apparatus for reception/transmission of two-way broadcasting signals is provided to receive a cable television broadcasting signal as receiving a television public wave signal by automatically selecting a cable television broadcasting signal input/output terminal and a television public wave broadcasting signal input/output terminal by using a remote controller, thereby enabling a viewer to transmit a transmission signal to a television broadcasting station or a cable television broadcasting station by using the remote controller. A high frequency switch apparatus for reception/transmission of two-way broadcasting signals comprises the followings: the first coupling capacitor(C1) which intercepts a low frequency signal after receiving a public wave signal received from the first antenna(ANT1), and bypasses a high frequency signal; a level control resistance(R1) for controlling a voltage level of the public wave signal outputted from the first coupling capacitor(C1); the first static electricity preventing diode(D5) for bypassing the static electricity, generated by the voltage of which the level is controlled by the level control resistance(R1), to ground; and the first controller(200) which receives B+ DC(Direct Current) power of a certain level from a B+ power terminal(190), receives specific power inputted through a low noise amplifier power terminal(191), and outputs a control signal of a high level or a low level.
|
