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Communications system having receivers which can be addressed in selected classes

  • US 4,916,539 A
  • Filed: 03/14/1989
  • Issued: 04/10/1990
  • Est. Priority Date: 04/21/1983
  • Status: Expired due to Term
First Claim
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1. An addressable receiver for receiving video and digital data signals, transmitting video output signals and controlling external devices, comprising:

  • (a) means for processing the video and digital data signals into a first video signal available for receiver output, a synchronization signal available for receiver output, and a serial digital data stream for controlling the receiver;

    (b) means for processing the digital data stream to recognize within such stream control words;

    (c) means for storing digital data contained in the digital data stream;

    (d) means for recognizing within the digital data stream hierarchical addresses, controlling the means for storing digital data selectively to store data in accordance with the hierarchical address preceding such data and;

    (e) means for recognizing within the digital data stream non-hierarchical designator data;

    (f) means for converting stored digital data into a second video signal containing characters and available for receiver output; and

    (g) means responsive to the digital data stream for controlling the receiver output.

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