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System and method for compressing video data for video conferencing at a reduced frame rate

  • US 5,966,166 A
  • Filed: 11/07/1996
  • Issued: 10/12/1999
  • Est. Priority Date: 11/07/1996
  • Status: Expired due to Term
First Claim
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1. A method for compressing video data from a video source located at a first node and for first transmission to a second node in order to enable second transmission from additional video sources to the second node, the second transmission being separate from the first transmission, the method comprising:

  • at the first node, sequentially storing a first number of fields N at a selected rate and dropping a second number of fields P to achieve a compression ratio of (P+N);

    N in order to enable transmission from the additional video sources to the second node; and

    converting the video signals from analog to digital prior to storing in a digital memory and converting the video data from digital to analog upon transferring the data for transmission of the first number of fields to the second node without transmitting the second number of fields to the second node.

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