New patents are issued by the USPTO on Tuesdays. Both of today's Spotlight Patents concern aspects of digital watermarking. Assigned to Snowflake Solutions, the first patent addresses techniques for unique watermarking for digital media. Assigned to Digimarc, the second patent addresses techniques for digital watermarking and data hiding with narrow-band absorption materials
9,756,289, "Unique watermarking for digital media," assigned to Snowflake Solutions, Inc.
Systems, methods and computer-readable media for uniquely identifying a digital medium by receiving a request for the digital medium, the request corresponding to a requestor, associating a unique identification with the requestor, encoding the digital medium based on the unique identification to provide a watermarked digital medium, the watermarked digital medium including a watermark that can be used to determine the unique identification, and providing the watermarked digital medium to the requestor.
9,754,341, "Digital watermarking and data hiding with narrow-band absorption materials," assigned to Digimarc.
The present disclosure relates to signal processing such as digital watermarking and data hiding. A sparse or dense digital watermark signal can be conveyed with a narrow-band absorption material corresponding to a center wavelength of a Point of Sale (POS) barcode scanner. The POS barcode scanner typically captures 2D imagery. Since the narrow-band absorption material absorbs over a narrow-band it is relatively imperceptible to the Human Visual System (HVS) but can be seen by the POS scanner.