US Patent 7783888 Watermarking in an audiovisual product
Patent 7783888 was granted and assigned to Zoo Digital Limited on August, 2010 by the United States Patent and Trademark Office.
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An audiovisual product (400) is recorded with a set of watermark characters (421, 701) as video or audio objects. A sequence of the watermark characters (421, 701) is selected and reproduced upon playback to uniquely identify a particular playback instance. Ideally, a user identity code is received upon playback amongst a predetermined set of user identity codes, and the sequence of watermark characters (421, 701) is selected and replayed according to the received user identity code. The sequence of watermark characters (421, 701) allows the user identity code to be traced should the audio and/or visual output of the audiovisual product (400) be recorded such as with a video cassette recorder (VCR).
US Patent 07783888 Watermarking in an audiovisual product US Patent 7783888 Watermarking in an audiovisual product
US Patent 07783888 Watermarking in an audiovisual product
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