Simulcasting digital video programs for broadcast and interactive services

  • US 5,729,549 A
  • Filed: 06/19/1995
  • Issued: 03/17/1998
  • Est. Priority Date: 03/16/1995
  • Status: Expired due to Term
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First Claim
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1. A communication system comprising:

  • a headend system producing a signal containing multiplexed channels, each channel carrying a transport stream comprising multiplexed streams of digitized broadband information;

    at least one broadband wireless transmitter for broadcasting the signal into a service area;

    a two-way wireless packet data network;

    a plurality of receiver systems within the service area, each receiver system comprising;

    (i) an antenna for receiving a wireless transmission of the signal,(ii) an interface module processing the received signal to select one of the channels and acquire a transport stream from the selected channel,(iii) a digital signal processing section for processing digitized data from a selected stream of digitized broadband information contained in the acquired transport stream to present selected broadband information, and(iv) an RF modem for two-way communication of signaling messages to and from the receiver system via the wireless packet data network,wherein the interface module comprises;

    means for selectively receiving the selected channel; and

    means for demodulating a signal from the selected channel to acquire the transport stream from the selected channel,wherein the RF modem is an element of the interface module.

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