System and method for reducing jitter in a packet-based transmission network
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United States of America Patent
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Jul 29, 1997
Grant Date -
N/A
app pub date -
Sep 27, 1994
filing date -
Sep 27, 1994
priority date (Note) -
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Abstract
A system and method for use in a video transmission network that regulates the timing of both the video signal and the audio signal regardless of the transport mechanism used to deliver the digitized audio and video signals from the source to a set top box, comprising replacing a program clock reference when it is present in ones of the audio and video transport packets with a new time derived from a high reliability source. A constant value is then derived from the new PCR value to be added to a program time stamp and a decode time stamp, if present, and the buffer size is increased merely by the amount of the constant times the bit rate of delivery of the packets.
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