| 摘要 |
An RF(Radio Frequency) switching module is provided to control gain of a selected broadcasting signal by selecting and outputting terrestrial broadcasting and cable broadcasting to a first and second tuner. A first switch(210) selects a first or second RF broadcasting signal according to a first switching control signal. A second switch(220) selects the first or second RF broadcasting signal according to a second switching control signal. A first low noise amplifier(310) amplifies the RF broadcasting signal received from the first switch. A second low noise amplifier(320) amplifies the RF broadcasting signal received from the second switch. |
