


G06F21/10- Protecting distributed programs or content, e.g.G06F21/00- Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity.

VISUAL WATERMARK FOR VIDEO PDF
Google Patents US7526733B1 - Visual watermarkĭownload PDF Info Publication number US7526733B1 US7526733B1 US10/226,039 US22603902A US7526733B1 US 7526733 B1 US7526733 B1 US 7526733B1 US 22603902 A US22603902 A US 22603902A US 7526733 B1 US7526733 B1 US 7526733B1 Authority US United States Prior art keywords visual watermark user software product visual code Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
