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Process and system for video rate control in a multipoint video conference

  • US 5,594,725 A
  • Filed: 12/28/1995
  • Issued: 01/14/1997
  • Est. Priority Date: 12/28/1995
  • Status: Expired due to Term
First Claim
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1. A multipoint video conference system having video rate control and allowing communication of audio, video and data information between end-point units, the multipoint video conference system comprising:

  • a multipoint control unit having a plurality of interface units located therein, each interface unit operable to communicate with other interface units via a backplane of the multipoint control unit; and

    a plurality of end-point units, each end-point unit coupled to an associated interface unit;

    each end-point unit operable to communicate and process real data information and operable to receive and resend fill data information;

    the multipoint control unit operable, with respect to each participating end-point unit in a data channel, to allow communication of real data information and, with respect to each non-participating end-point unit, to allow communication of an equal amount of fill data information;

    each interface unit operable to transmit real data information to a participating end-point unit and to transmit fill data information to a non-participating end-point unit; and

    each non-participating end-point unit operable to retransmit fill data information back to an associated interface unit;

    such that available bandwidth for video information remains balanced for all end-point units when a data channel is open between participating end-point units.

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