3 569 619 A 3/1971 Simjian...................... 235/380 Watermarks transform Video Objects into
“Watermark 3: 665j162 A 5/1972 Yamamoto et a1_ _______ __ 235/380 enabled” video …

The present invention relates generally to systems for creat ing and authenticating printed
objects using authentication information. One implementation recites: An apparatus for …

The present invention provides methods and systems for authenticating identi? cation
documents. We also teach an identi? cation document including tWo or more digital Water …

Watermarks in video signals or the accompanying audio track are used to associate video
objects in a video sequence with object specific actions or information. A video object refers …

2000-11-13 Assigned to DIGIMARC CORPORATION reassignment DIGIMARC
CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR …

(57) ABSTRACT A method is provided for authenticating a media signal and related
Software, Systems and applications. A digital water mark is embedded in the media signal. A …

The following detailed description is grouped into four main sections. The grou** is not
meant to limit the scope of the present invention, and is merely provided for the readers …

Methods, apparatus, and articles of manufacture for media monitoring are disclosed. In
particular, the example methods, apparatus, and articles of manufacture generate digital …

A watermark can be viewed as an information signal that is embedded in a host signal. Such
as an image, audio, or Some other media content. Watermarking systems based on the …

Two or more digital watermarks, with different characteristics, are embedded in a document.
The characteristics are chosen so that the watermarks will be affected in different manners if …