A keyword showing the user's preference in radio programs is registered, and the number of hits of the above keyword in each radio program is totalized based on on-air information and now-on-air information being broadcast content information. The number of hits of the keyword is displayed on a display 26. Thereby, the user can recognize that which radio program is a radio program having a strong tendency to provide information concerning the keyword. Thus, a radio program matching to the user's preference can be shown to the above user.