Digital watermarking was introduced at the end of the 20th century to provide means of
enforcing copyright protection once the use and distribution of digital multimedia data have …

In this paper, we will provide an overview of the wavelet-based watermarking techniques
available today. We will see how previously proposed methods such as spread-spectrum …

This paper provides a tutorial and survey of digital fingerprinting and video scrambling
algorithms based on partial encryption. Necessary design tradeoffs for algorithm …

(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 …

Methods, devices, and computer program products facilitate the application of a content use
policy based on watermarks that are embedded in a content. Watermark extraction and …

Methods, systems, devices and computer program products are provided to facilitate
enhanced use and interaction With multimedia content that is based on a time-varying …

4,464,656 4497, 060 4,512,013 4,547,804 4,564,862 4,593.904 4,639,779 4,669,089
4,677.466 4,686,707 4,703,476 4,706,282 4,723,302 4,729,398 4,739,398 4,750,173 …

4,225,967 4,230,990 4,281.217 4,295,128 4.425, 578 4454, 610 4,464,656 4497, 060
4,512,013 4,547,804 4,564,862 4,593.904 4,639,779 4,669,089 4,677.466 4,686,707 …

The analysis of the security of watermarking algorithms has received increasing attention
since it has been recognized that the sole investigation of robustness issues is not enough …

4,564,862 4,593.904 4,639,779 4,669,089 4,677.466 4,686,707 4,703,476 4,706,282
4,723,302 4,729,398 4,739,398 4,750,173 4,755,871 4,755,884 4,764,608 4,764,808 …