Methods, devices and computer program products facilitate conditional access to a content
embedded with watermarks. For Such a content, when copy control rules associated with an …

Methods and devices are provided to embed imperceptible watermarks into a host content
and to subsequently extract embedded watermarks in a manner so as to achieve desired …

Methods, devices and computer program products facilitate embedding and extraction of
watermarks into and from a host content. Embedded watermarks include an automatically …

Methods and devices are provided to thwart analysis of a watermarking system by
preventing analysis of watermarks in a host content. Upon receiving a content at a …

Methods, devices, and computer program products enable the embedding of forensic marks
in a host content that is in compressed domain. These and other features are achieved by …

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 4,703,476 4,706,282 4,723,302 4,729,398 4,739,398 …

Methods, systems and devices enable enhanced delivery of metadata, as well as auxiliary
programs and services asso ciated with a primary content. In one method, a primary content …

US6845170B2 - Watermark resistant to resizing and rotation - Google Patents
US6845170B2 - Watermark resistant to resizing and rotation - Google Patents Watermark …

Methods and devices are provided for reducing perceptible artifacts in a host content when
the host contend is embedded with watermarks. In one method, a first segment of a host …

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 4,789,863 4,805,020 …