Multiplex communications – Wide area network – Packet switching
Patent
1994-05-25
1996-01-09
Marcelo, Melvin
Multiplex communications
Wide area network
Packet switching
3701051, 348513, 348526, H04J 306, H04N 708
Patent
active
054835380
ABSTRACT:
Audio frame synchronization for embedded audio demultiplexers counts the number of audio samples for each video frame of a digital video signal. The pattern of audio samples per video frame for an audio frame is detected to identify an audio frame boundary, the pattern being a function of the respective video and audio standards for the digital video signal. For example in one embodiment the number of audio samples for consecutive video frames are compared, and when there is equality between consecutive video frames the audio frame boundary is detected.
REFERENCES:
patent: 5351090 (1994-09-01), Nakamura
patent: 5396497 (1995-03-01), Veltman
Gray Francis I.
Marcelo Melvin
The Grass Valley Group Inc.
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