To properly switch a plurality of broadcasts in the same transmission channel corresponding to reception environment.

A CNR indicating a reception state of broadcasting wave of the selected channel to be reproduced is detected by a channel decode unit 130. Further, a packet error regarding B-rank broadcasting of the channel is detected by a source decode unit 140. A switch determination part 212k determines switching between A-rank broadcasting and B-rank broadcasting for each threshold THk in accordance with a comparison result of reception quality of the B-rank broadcasting calculated based on these detection results and each of thresholds THk (k=1-3, V). According to the results of switching determination and B-rank packet error detection, a threshold calculation part 215 calculates a new threshold THV so that a ratio of an appropriate period for selecting the B-rank broadcasting approaches a ratio of an actual period of selecting the B-rank broadcasting, and uses the value for switching control of the A-rank broadcasting and the B-rank broadcasting.