Method and apparatus for video watermarking using perceptual masks Grant US-6282299-B1 United States of America 28 Aug 2001
Digital watermarking to resolve multiple claims of ownership Grant US-6272634-B1 United States of America 07 Aug 2001
Method and apparatus for scene-based video watermarking Grant US-6226387-B1 United States of America 01 May 2001
Method and apparatus for embedding data, including watermarks, in human perceptible sounds Grant US-6061793-A United States of America 09 May 2000