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Video communication apparatus

  • US 5,627,825 A
  • Filed: 09/02/1994
  • Issued: 05/06/1997
  • Est. Priority Date: 09/03/1993
  • Status: Expired due to Fees
First Claim
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1. A video communication apparatus for video communication between multiple parties, comprising:

  • a plurality of first demodulator and decoder units for demodulating and decoding a plurality of input video signals originating from said multiple parties, wherein each of said plurality of first demodulator and decoder units produces a first demodulated video signal including a sequence of fields;

    a plurality of video field buffers, each of said plurality of video field buffers storing one of a plurality of first demodulated video signals produced by an associated one of said plurality of first demodulator and decoder units from one of said plurality of input video signals;

    a video field selector that generates a single analog output video signal comprising a sequence of fields, wherein said video field selector selects each field within said single analog output video signal from among fields within said plurality of first demodulated video signals stored within said plurality of video field buffers; and

    a code generator which adds field identification codes to each field within said single analog output video signal, wherein each field identification code identifies an input video signal from which an associated field was derived; and

    a coder and modulator that codes and modulates said single analog output video signal for transmission to said multiple parties.

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