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 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 facilitate embedding and extraction of
watermarks into and from a host content. Embedded watermarks include an automatically …

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 …

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 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 …

Methods and devices are provided for embedding auxiliary information in a host content in a
manner that reduces memory, bandwidth and computational complexity of the embedding …

Methods, devices and computer program products allow embedding and detection of
watermarks into and from a multimedia content. One watermark embedding method includes …

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 …

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 …