6,519,352 B2 2/2003 Rhoads 2002/0048369 A1 4/2002 Ginter et al................... 38O, 277
6,523,114 B1 2/2003 Barton 2002/0076080 A1 6, 2002 Hecht et al. 6,532,562 B 1 3/2003 …

(57) ABSTRACT A digital watermarking proceSS whereby an invisible water mark inserted
into a host image is utilized to determine whether or not the image has been altered and, if …

This invention relates to the field of security, and in par ticular to the protection of content
material via watermarking. 2. Description of Related Art Watermarking is becoming an …

Described herein is audio watermarking technology for inserting and detecting watermarks
in audio signals, such as a music clip. The watermark identifies the content producer …

The invention relates to methods, devices and Systems for reconfiguring a watermark
detector. In many applications, it is useful to be able to change the operation of a watermark …

The disclosure describes a method of embedding a digital watermark into a video signal
using a time based perceptual mask such that the digital watermark is substantially …

Methods, devices, systems and computer program products facilitate embedding and
extraction of transactional water marks into and from a video content. One method for select …

(57) ABSTRACT A System for embedding and detecting digital watermarks, eg, for copyright
protection of digital content distributed via the Internet or other channels. Different copies of …

The invention provides a method of forensic digital watermarking that randomly selects an
orientation and/or embedding protocol for a forensic digital watermark signal to be …

(57) ABSTRACT A method of embedding information in digital content representing media
streams. The method includes (1) Select ing a Set of locations within that digital content …