US Patent Issued to Xerox on Sept. 22 for "Digital (on screen) monochromatic watermark" (New York Inventor)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,743,737, issued on Sept. 22, was assigned to Xerox Corp. (Norwalk, Conn.).

"Digital (on screen) monochromatic watermark" was invented by Edward N. Chapman (Rochester, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for rendering a watermark, can involve creating a digital watermark by applying grayscale inversion and contrast reduction to a document, resulting in a visually distinguishable pattern and rendering a digital watermark on the document in a manner that allows verification at different viewing angles. The digital watermark can be created using a digital swatch sheet of multiple gray values. The document can be viewed v...