In addition, the broadcast unit includes complementation data group transmission means for transmitting a first complementation data group in which a plurality of first complementation data packets for complementing the first broadcast program are continued and a second complementation data group in which a plurality of second complementation data packets for complementing the second broadcast program are continued on a communication path different from that of broadcast. また、放送とは異なる通信路で、第1の放送番組を補完するための第1の補完データパケットが複数連続する第1の補完データ群および第2の放送番組を補完するための第2の補完データパケットが複数連続する第2の補完データ群を送信する補完データ群送信手段を備える。 - 特許庁
Transmission/reception of radio signals between nearby outdoor public address devices, in which a complementary group is set beforehand, is executed in acomplementation transmitting/receiving part 22. 補完用送受信部22は予め補完グループを設定した近隣の屋外拡声装置との間で無線信号の送受信を行う。 - 特許庁