Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2011-01-25
2011-01-25
Pham, Chi H. (Department: 2471)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S230000, C370S252000
Reexamination Certificate
active
07876685
ABSTRACT:
Devices and techniques for overcoming lost packets and avoiding congestion when conducting media conferences over packet switched networks are described herein. To avoid the problem of lost packets, redundant information is inserted into the media stream that permits the receiver to reconstruct any lost packets from the redundant information. Congestion avoidance techniques include adjusting the bitrate of the media stream to find the highest bitrate that can be supported without packet loss due to congestion. When increasing the bitrate to a higher rate, the additional bits can come from the redundant information used for lost packet recovery so that any lost packets caused by network congestion will not adversely affect the bitstream.
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Botzko Stephen
Flott, Jr. Richard
Hein David
Spearman John Paul
Mew Kevin
Pham Chi H.
Polycom, Inc.
Wong, Cabello, Lutsch, Rutherford & Brucculeri L.L.P.
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