JPS6454943A - Control method for rds receiver - Google Patents

Abstract

PURPOSE:To easily select a radio digital system broadcast station whose reception state is best, by selecting a reception frequency data in the order of larger reception signal levels and writing a selected reception frequency data in a memory corresponding to a preset channel. CONSTITUTION:In the arrival of the sweep mode by the operation of a sweeping mode button 23 of an operating section 16, a processing unit varies the reception frequency date given to a PLL circuit 2a of a front end 2 from a controller 14 to a minimum value to discriminate the presence and absence of the production of a station detection signal. When the broadcast wave cannot be received at the reception frequency, the reception frequency is increased by a prescribed value after a prescribed time elapses after the reception frequency data is varied. On the other hand, in receiving a new broadcast wave, an IF signal level reaches a prescribed level or above, and a station detection circuit 20 outputs a detection signal. When the signal is generated, a data fed from an error correction circuit 13 is inputted and when the input data is obtained, the reception frequency data in the order of larger reception signal levels is selected and the selected data is written in a memory corresponding to a preset channel.