digital watermark


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digital watermark

[‚dij·əd·əl ′wȯd·ər‚märk]
(computer science)
Invisible or inaudible data (a random pattern of bits or noise) permanently embedded in a graphic, video, or audio file for protecting copyright or authenticating data.

digital watermark

A pattern of bits embedded into a file that is used to identify the source of illegal copies. For example, if a digital watermark is placed into a master copy of an audio CD or DVD movie, then all copies of that disc are uniquely identified. If a licensee were to manufacture and distribute them in areas outside of their authorized territories, the watermark provides a trace.

The watermark developer has to find creative ways of altering the file without disturbing it for the user. It is extremely difficult to embed a watermark within an ASCII file, which is just raw text. But it is relatively easy to alter a few bits within audio, video and graphics formats without making a noticeable difference on playback or display.
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The digital watermark obtained from the Authentication System is set on the customer's website, and the bona fide data for the website is recorded.
A work product of the DCIA-sponsored P2P Digital Watermark Working Group (PDWG), the document is being provided today to Members of Congress at the House Entertainment Industries Caucus hosted by the Digital Watermarking Alliance (DWA), a PDWG participant.
driver licenses issued in 2007 will be secured with digital watermarks.
Digital watermarks offer brand-sensitive companies an elegant, inobtrusive alternative to industrial-style barcodes and QR codes, allowing companies to easily extend their print campaigns to the mobile world without having to use visible marks that detract from the their brand.
The rollout of new digital watermark authentication capabilities in Nebraska follows the State's successful pilot of the technology under a grant from the U.