Addressable PCM music broadcast receiver

Claim 1

A receiver for reproducing a music program from an addressable PCM music broadcast signal which includes music data in every frame and contract code data for each of a predetermined number of frames, the receiver comprising: demodulating means for demodulating the music data and the addressable music broadcast signal to reproduce the music program; read-out means for reading out the contract code data; comparing means for comparing the read-out contract code data with a code assigned to the receiver for each of the predetermined number of frames; counting means in response to the comparing means for counting coincidence events in which the read-out contract code data coincides with the code assigned to the receiver and non-coincidence events in which the read-out contract code data does not coincide with the code assigned to the receiver, and generating a demonstration service mode indication signal until either of the counts of the coincidence events or non-coincidence events reaches a predetermined count, said counting means further generating a contract program service mode indication signal when the count of the coincidence events reaches the predetermined count first and generating a muting signal to said demodulating means to inhibit the music program reproduction when the count of the non-coincidence events reaches the predetermined count first.