Interactive video distribution systems – User-requested video program system – Video-on-demand
Reexamination Certificate
2002-07-18
2010-10-19
Kelley, Christopher (Department: 2424)
Interactive video distribution systems
User-requested video program system
Video-on-demand
C725S127000
Reexamination Certificate
active
07818772
ABSTRACT:
A system and method for improving quality of video communication includes a packets generator logical unit (PGU) coupled to a video source for receiving a compressed video stream and generating primary and secondary data chunks for transmittal to one or more destination nodes via a network. Each primary data chunk is associated with a secondary data chunk, and each secondary data chunk includes video data that covers a same portion of a video frame as video data included in each associated primary data chunk. The PGU encapsulates the primary and secondary data chunks in associated primary-secondary packet pairs composed of MB data fields, picture header fields, GOB and slice start header fields, and MB header fields, among others. The destination nodes process the secondary packets received via the network if the primary packets are damaged or lost in transmission.
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Elbaz Moshe
Yona Ilan
Andramuno Franklin S
Kelley Christopher
Polycom, Inc.
Wong Cabello Lutsch Rutherford & Brucculeri LLP
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