Patent 7522203 was granted and assigned to Eastman Kodak on April, 2009 by the United States Patent and Trademark Office.
An image sensor includes a substrate having a plurality of photosensitive sites for capturing an image and a plurality of additional photosensitive sites adjacent the image capturing photosensitive sites in which there is no image capture; and a digital signal embedded in one or more of the additional photosensitive sites for the purpose of identification.