INTEGRATING DIGITAL WATERMARKS IN MULTIMEDIA CONTENT

摘要

A method for decoding auxiliary data from media signals in multimedia content decodes watermarks (40 and 42) from different media signals (44 and 46) and uses the watermarks to control processing of the multimedia content (58). A copy control method decodes a watermark from one of the media signals in multimedia content, and uses the watermark to control processing of the multimedia content. Another method uses a watermark decoded from a media signal to decode metadata associated with the media signal. Finaly, another method forms a key for decoding data from at least first and second watermarks extracted from first and second media signals.