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Multi-channel PCM music broadcasting system

  • US 4,922,483 A
  • Filed: 09/29/1988
  • Issued: 05/01/1990
  • Est. Priority Date: 10/02/1987
  • Status: Expired due to Fees
First Claim
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1. A music broadcasting system comprising:

  • a transmitter including,(a) a plurality of time division multiplex (TDM) units, each unit accommodating music source channels and multiplexing signals from the music source channels in TDM channels to produce a TDM signal; and

    (b) a frequency division multiplex (FDM) unit for multiplexing the TDM signals from said plurality of TDM units in assigned frequency bands to produce a FDM signal for transmission,wherein the TDM signal in each frequency band includes music data for music source channels accommodated by the TDM unit corresponding to the same frequency band and header data for music source channels accommodated by all the TDM units in the transmitter, and the header data includes operation mode information representative of association of the music source channel with the frequency band for every music source channel;

    a receiver including,(a) means for receiving the transmitted FDM signal for the selected frequency band;

    (b) means for reproducing the TDM signal in the selected frequency band;

    (c) means for detecting the header data in the selectively received TDM signal; and

    (d) control means responsive to the designation of the music source channel by an operator for identifying the frequency band associated with the designated music source by referring to the detected header data and controlling said receiving means to receive the transmitted FDM signal for the identified frequency band.

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