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Signal distribution system

  • US 4,654,843 A
  • Filed: 09/12/1983
  • Issued: 03/31/1987
  • Est. Priority Date: 09/17/1982
  • Status: Expired due to Fees
First Claim
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1. A head-end signal distribution system comprising:

  • means for encoding a plurality of wideband input signals into a plurality of mutually asynchronous digital signal streams;

    a space switching network for selectively switching said plurality of mutually asynchronous digital signal streams to a plurality of at least three output terminals;

    multiplexing means for combining signals from said at least three output terminals into a composite signal comprising;

    modulating means for amplitude modulating two of said terminal output signals on first and second carrier signals of the same frequency and differing in phase by 90°

    ; and

    summing means for combining a remaining output terminal signal from said space switching network with said first and second modulated carrier signals to form a single composite signal for distribution.

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