Patent ID: 6915107

Claim:
A method of providing content specific information over an FM subcarrier frequency on demand, the method comprising: securing at least one FM subcarrier frequency; distributing portable receivers adapted to play audio signals broadcast on the at least one FM subcarrier frequency on demand; compiling content specific information; recording at least one public service audio clip including the content specific information; recording at least one advertising audio clip; preparing automated playback recording of the at least one public service audio clip; generating a modulated signal of the automated playback recording of the at least one public service audio clip and the at least one advertising audio clip in coincident relation wherein users of the portable receivers desiring to hear the automated playback recording are also exposed to the at least one advertising audio clip; transmitting the modulated signal and start and stop signals to the portable receivers in a continuous loop wherein the start signal indicates the beginning of the continuous loop and the stop signal identifies the end of the continuous loop; and receiving the transmission signal at the portable receiver wherein the portable receiver is adapted to demodulate the transmission signal providing an audio signal broadcast of duration specified by the start and stop signals.