Patent ID: 7308235
Filing Date: 2007-12-11
Classification: H04B,H04H

Abstract:
1. An audio broadcast receiver for receiving an analog audio broadcast comprising: a station selecting portion for receiving RF signals of a fixed receiving frequency; a demodulating portion for demodulating the RF signals received in the station selecting portion to recover analog audio signals with which the RF signals were originally modulated; an electric field strength detecting portion for detecting the electric field strength of the RF signals received by the electric field strength detecting portion; a modulation factor detecting portion for detecting an evaluation value indicating a modulation factor of the RF signals, modulated with the analog audio signals, received in the station selecting portion; and an automatic station selecting portion in which, while the receiving frequency is being changed, a receiving frequency having an electric field strength that is equal to or larger than a predetermined level and an evaluation value that indicates a modulation factor being equal to or larger than a predetermined level is searched for, and then the searched for receiving frequency is set as a subsequent receiving frequency.