| 摘要 |
PURPOSE:To provide a system sending/receiving subbroadcast information at a low cost as program relating information to be broadcast while being multiplexed on a broadcasting signal. CONSTITUTION:Program relating information such as access data for a by directional broadcast and program reservation data is configured at a broadcast side by using a DTMF signal in an audio signal band and the information is broadcast while being multiplexed with a main broadcast audio signal. A DTMF decoder 32 at a receiver side decodes a DTMF signal from the demodulation signal S14 of an audio demodulator 14. Subbroadcast information such as decoded program relation information is stored in memories 23, 24 and the information stored in the memories is used for automatic replay dialing and program reservation or the like in the bydirectional broadcast. |
