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Video conferencing system using spatial reduction and temporal resolution

  • US 4,004,084 A
  • Filed: 03/03/1976
  • Issued: 01/18/1977
  • Est. Priority Date: 03/03/1976
  • Status: Expired due to Term
First Claim
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1. In a video conferencing system, apparatus for reducing bandwidth of a plurality of video pictures;

  • each picture having one or more fields, each picture being provided by a corresponding one of a plurality of video cameras, and each picture for display on a corresponding one of a plurality of video monitors;

    said apparatus including means for spatially reducing a picture from a first group of one or more cameras, said spatial reduction means including means for providing a spatial portion of said picture from said first group of cameras, said spatial portion being less than the total raster of a picture and CHARACTERIZED IN THAT said apparatus further comprises;

    temporal resolution means operative upon said picture from said first group of cameras, said temporal resolution means including means for interleaving each picture in said first group in a prefixed rotational sequence.

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