Interactive video-on-demand system
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United States of America Patent
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Apr 1, 2003
Grant Date -
N/A
app pub date -
Nov 20, 1997
filing date -
Nov 27, 1996
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Abstract
A data distribution system and a protocol for interactive information services over a network and in particular for video-on-demand applications. A shared buffer and a split-and-merge protocol are implemented to allow multiple users to share the same video stream multicasted over a network with true VOD services including the ability to access any available video at any time, and to perform any VCR-like functions and random access. Video requests for a video program are served in batches. A user interaction is first handled by splitting off the interactive user from a shared video stream in a batch, and by subsequently assigning the user a new dedicated video stream. The interactive user is subsequently merged back to one of the batching video streams shared by multiple users upon resuming normal play mode.
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