| 摘要 |
<p>An information delivery system comprising a transmitter (1) arranged such that it is capable of performing at least one of receiving a received signal corresponding to an audio signal (16) which is either a digital signal or which the transmitter (1) is arranged to process into a digital signal; and receiving a digital signal providing information, and the transmitter (1) being arranged to modulate a radio frequency carrier (60) according to either or both digital signals, the system further comprising a receiver (2) arranged to receive the modulated carrier (60) such that the received modulated carrier induces power in the receiver (2) to allow the digital signal to be detected therein and the receiver (2) being further arranged to allow either or both of the audio signal and the information to be recovered from the detected digital signal.</p> |
