The present invention relates to toys and game applications that are enhanced with digital
watermarks. In one embodi ment, a character card includes a unique identifier in the form of …

4,677,466 A 6, 1987 Lert et al. 6,286,036 B1 9, 2001 Rhoads 4,682,370 A 7, 1987 Matthews
6,292,092 B1 9, 2001 Chow et al. 4,697,209 A 9, 1987 Kiewit et al. 6,304,523 B1 10/2001 …

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 …

Multimedia data embedding, such as video, image or audio data watermarking. In one
embodiment, a computer-implemented method first receives a vector x of N data samples …

(57) ABSTRACT A watermark System includes an embedder, detector, and reader. The
watermark embedder encodes a watermark Sig nal in a host signal to create a combined …

Human visual perception is able to recognize a wide range of targets but has limited
throughput. Machine vision can pro cess images at a high speed but suffers from inadequate …

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 …

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 …

4,564,862 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 …