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Multiple encoder output buffer apparatus for differential coding of video information

  • US 5,416,520 A
  • Filed: 11/30/1993
  • Issued: 05/16/1995
  • Est. Priority Date: 11/30/1993
  • Status: Expired
First Claim
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1. For use in a communications network having a plurality of nodes wherein a node may encode real-time information for propagating over said network, a method of processing said real-time information comprising the steps of:

  • providing said node with a plurality of output buffers;

    (a) electronically capturing said real-time information and converting it into electronic data;

    (b) differentially encoding said electronic data using a previously stored transmit reference image as a base to produce differential data;

    (c) storing said differential data in one of said plurality of output buffers;

    (d) monitoring said network for access to propagate said differential data;

    repeating steps (a)-(d) until said node may propagate said differential data over said network;

    transmitting data over said network from the one of said plurality of output buffers providing a best differential data to a receiving node on said network, wherein said best differential data represents a differential data whose use in conjunction with the previously stored transmit reference image produces an image that approximates a current frame better than use of other differential data contained in said plurality of output buffers; and

    calculating a new transmit reference image based on said best differential data and said previously stored transmit reference image.

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