| 摘要 |
A digital broadcasting receiver includes: a variable gain amplifier for amplifying an electric wave received through an antenna, a gain of the variable gain amplifier being made variable in accordance with a signal from the outside; a distributor for distributing the signal from the variable gain amplifier into two signals; first and second tuners connected to the distributor for performing selection of broadcastings, and amplification; digital demodulation ICs for demodulating output signals from the first and second tuners, thereby obtaining digital signals, respectively; and a signal processing portion for processing the digital signals from the digital demodulation ICs. The signal processing portion calculates bit error rates of the first and second tuners, and when at least one of the bit error rates is equal to or larger than a threshold, varies the gain of the variable gain amplifier.
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