Versatile watermark transport system

Details Versatile watermark transport system Versatile watermark transport system

2006-03-30

2009-11-24

Lu, Tom Y (Department: 2624)

Image analysis

Applications

Reexamination Certificate

active

07623673

ABSTRACT:
Watermark data may be transported by preprocessing one or more elementary data streams. Preprocessing may be achieved by demultiplexing the elementary data stream or by including an extra elementary data stream among the elementary data stream. To insert a watermark in either the elementary data stream or extra elementary data stream, a watermark object may be created by precomputing watermark change data using watermark metadata. Once created, the watermark object may be transported either by packetizing and multiplexing the watermark object into the elementary data stream or overwriting the extra elementary data stream. Afterwards, process takes place. Where packetizing and multiplexing occurs, processing includes demultiplexing the elementary data stream, creating a watermarked elementary data stream and reinserting the watermarked elementary data stream. Where overwriting occurs, processing may include discarding the watermark object upon completing watermarking and may include decoding the watermarked elementary data stream.

REFERENCES:
patent: 6614844 (2003-09-01), Proehl
patent: 6865747 (2005-03-01), Mercier
patent: 7162642 (2007-01-01), Schumann et al.

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