US 2006/0223477 A1 · Receiving apparatus, signal processing circuit, and signal receiving method

Abstract

There is provided a receiving apparatus having a simple configuration and an excellent ability to eliminate multipath noise, in which an antenna in a good reception state can be instantly selected. A reception signal from an antenna is inputted to an intermediate-frequency amplifying circuit via an antenna switching circuit, a front end and an A/D converting circuit, and an S meter signal from an S meter circuit is inputted to a controlling section via a noise detecting filter and an absolute value circuit. Then, the controlling section compares noise components outputted from the absolute value circuit (noise level) with a threshold value Vth outputted from a threshold value setting section. When the noise level becomes higher than the threshold value Vth, an antenna selection controlling signal is outputted to the antenna switching circuit, and antennas are switched.

Claims6

Dependent claims

A receiving apparatus comprising:

switching means for performing switch-over between a plurality of antennas;
noise detecting means for detecting noise included in a signal received from the antennas;
and
controlling means for controlling the switching means on a basis of comparison between a noise level of the detected noise and a threshold value,
wherein the controlling means performs a threshold value setting process for setting the threshold value to a value based on the noise level, and
control of the switching means is made to stop for a predetermined length of time after the threshold value setting process.

3 more elements

Dependencies are inferred from the claim text.

Receiving apparatus, signal processing circuit, and signal receiving method

Life of this patent

Receiving apparatus, signal processing circuit, and signal receiving method

Life of this patent

Abstract

Claims6