Patent ID: 7224939

Claim:
An audio broadcast receiving apparatus comprising: a tuner for simultaneously receiving an analog audio broadcast radio wave and a digital broadcast radio wave transmitted in parallel with the analog audio broadcast radio wave in a specific frequency band; a demodulator for retrieving the intended audio information by demodulating the receiving signal received by the tuner; an analog receiving signal bandpass filter for selectively passing the receiving signal corresponding to the analog audio broadcast radio wave; an analog receiving signal amplifier for amplifying the receiving signal passed through the analog receiving signal bandpass filter and outputting an output signal to the demodulator, the analog receiving signal amplifier having the gain thereof controlled in accordance with the level of the output signal; a digital receiving signal bandpass filter for selectively passing the receiving signal corresponding to the digital audio broadcast radio wave; and a digital receiving signal amplifier for amplifying the receiving signal passed through the digital receiving signal bandpass filter and outputting an output signal to the demodulator, the digital receiving signal amplifier having the gain thereof controlled in accordance with the level of the output signal.