METHOD AND APPARATUS FOR MULTIPLEXING SEPERATELY-AUTHORED METADATA FOR INSERTION INTO A VIDEO DATA STREAM
First Claim
1. An authoring system for interactive video, comprising:
- a video feed providing a main video presentation stream;
two or more authoring stations coupled to the video feed providing authoring functions creating metadata for enhancing the main video stream; and
a multiplexer for coordinating authored metadata with the main video stream;
wherein the authoring stations note a presentation time stamp (PTS) of video frames or a synchronized system time and incorporate the PTS in the authored metadata for matching the metadata with the main video presentation stream.
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Accused Products
Abstract
An authoring system for interactive video has two or more authoring stations for providing authored metadata to be related to a main video data stream and a multiplexer for relating authored metadata from the authoring sources to the main video data stream. The authoring stations annotate created metadata with presentation time stamps (PTS) from the main video stream, and the multiplexer relates the metadata to the main video stream by the PTS signatures. In analog streams PTS may be created and integrated. In some embodiments there may be multiple and cascaded systems, and some sources may be stored sources. Various methods are disclosed for monitoring and compensating time differences among sources to ensure time coordination in end product. In different embodiments transport of metadata to an end user station is provided by Internet streaming, VBI insertion or by Internet downloading. User equipment is enhanced with hardware and software to coordinate and present authored material with the main data stream.
473 Citations
27 Claims
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1. An authoring system for interactive video, comprising:
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a video feed providing a main video presentation stream;
two or more authoring stations coupled to the video feed providing authoring functions creating metadata for enhancing the main video stream; and
a multiplexer for coordinating authored metadata with the main video stream;
wherein the authoring stations note a presentation time stamp (PTS) of video frames or a synchronized system time and incorporate the PTS in the authored metadata for matching the metadata with the main video presentation stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for coordinating authored video metadata with a main video data stream, comprising steps of:
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(a) ensuring the main video data stream has a presentation time stamp (PTS);
(b) feeding the digital main video data stream to authoring stations;
(c) authoring matadata at the authoring stations; and
(d) marking the metadata with presentation time stamps (PTS) from the main digital video data stream. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A video multiplexing system comprising:
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inputs from video authoring stations;
an input for a main digital video data stream; and
an output to a video transport interface;
wherein the multiplexer notes presentation time stamps associated with authored metadata, and places the authored metadata relative to the main video data stream for transport to end users. - View Dependent Claims (24, 25, 26, 27)
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Specification