https://patentbrief.org/company/digimarc-corp Plain-English explanations of patents assigned to Digimarc Corp, newest first. en-us Mon, 15 Jun 2026 05:56:14 GMT https://patentbrief.org/patent/us/6567533/playstation-2-emotion-engine A method for hiding invisible patterns in digital images that allow computers to detect if an image has been rotated or resized, even if the original version is missing. Tue, 20 May 2003 00:00:00 GMT https://patentbrief.org/patent/us/6567533/playstation-2-emotion-engine