(57) ABSTRACT A method for tracking media signals in multimedia content is provided by
uniquely identifying the multimedia content With a digital Watermark identi? er. A video …

The present invention relates to digital watermarking. In a preferred embodiment, media is
embedded with one or more digital watermark components. The media includes a blue color …

A digital watermark reader performs a logarithmic sampling of a watermarked media signal
to produce a sampled signal. It then analyzes the sampled signal to detect attributes …

BACKGROUND Digital watermarking is a process for modifying physical or electronic media
content to embed a hidden machine readable code into the media. In digital watermarking, a …

(57) ABSTRACT A method for applying a digital watermark to a content Signal is disclosed.
In accordance with Such a method, a watermarking key is identified. The watermarking key …

Methods and apparatus for embedding digital watermarks into a digital host content are
provided. A digital host content is received, eg, at a receiver or other device incorporating a …

5,404,377 A 4/1995 Moses 5,526,427 A 6, 1996 Thomas et al. 5,664,018 A 9/1997 Leighton
5,671,277 A 9, 1997 Ikenoue et al. 5,774.452 A 6, 1998 Wolosewicz 5,809,139 A* 9/1998 …

Methods, devices and computer program products for enabling secure and efficient
extraction of embedded water marks from digital host content are provided. Upon the recep …

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 …

Methods for adapting the operation of a system in response to the detection of embedded
Watermarks from a digital host content are provided. A digital host content is received and …