RADIO BROADCAST RECEIVER AND ON-VEHICLE NAVIGATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a car navigation device 10 by which a user can efficiently select another appropriate FM multiplex radio broadcast program with VICS information when a reception state of a FM multiplex radio broadcast program with VICS information is deteriorated. SOLUTION: An FM car radio receiver 45 uses an FM reception section 47 and a VICS decoder to extract VICS information from an FM multiplex radio broadcast program with VICS information that is selected at present and a sensitivity measurement circuit 50 scans an FM radio broadcast frequency band so as to retrieve the presence of an FM multiplex radio broadcast program with VICS information whose electric field strength E is a prescribed value Er or over at all times. A display device 38 displays all the FM multiplex radio broadcast programs with VICS information retrieved by the sensitivity measurement circuit 50 whose electric field strength E is the prescribed value Er or over while its reception frequency R is related to the electric field strength E as information or the user.