Abstract: An object of the invention is to allow receiving a radio wave signal in a comfortable manner by overcoming defects in technique and performance according to the related art in reducing a multipath noise by use of an adaptive digital filter. In a multipath noise reducing apparatus (20), an A/D converter (24) converts a received signal from an analog signal to a digital signal, and an ADF (21) carries out a digital signal processing to reduce the multipath noise. At a time of determination of an overmodulation by an overmodulation determining unit (22), an operation of the ADF (21) is turned off to prevent deterioration in a distortion property. Therefore, the multipath noise reduction and prevention of the corresponding deterioration in the distortion property at a time of the overmodulation can be achieved at the same time.

Abstract: The present invention provides a mobile receiver, whereby the power consumption can be kept as lower as possible, as the size of the automobile equipment control system, the placement space thereof and the cost can be reduced, since an antenna and part of receiving circuits for keyless entry system are also used as those of a mobile radio receiver. Moreover, in order to prevent the users from feeling inconvenience in its use, the mobile receiver has a construction wherein a mixing circuit, a local oscillator circuit and the like for keyless entry system and those for radio receiver are separately arranged though the antenna and an intermediate frequency amplifier circuit are used both for keyless entry system and for radio receiver. As a result, signals from the remote control side can be received even while someone is listening to the radio.