| 摘要 |
Three antennas receive broadcasting signals from the same station. A demultiplexer 120 carries out demultiplex processes on video signals received by the three antennas, and obtains three bit streams and an error rate for each bit stream. A decoder 130 decodes each of the bit streams to obtain three decoded data, and also obtains a BER value (Bit Error Rate) for each picture obtained in the decoding. A CPU 150 selects the decoded data of bit streams having transmission quality equal to or higher than a predetermined reference quality based on the error rates obtained by the demultiplexer 120, obtains the transmission quality for each picture, for the selected decoded data, based on the BER value from the decoder 130, and selects the picture having the highest transmission quality from among pictures that correspond to each other among the selected decoded data. |
