Tuesdays the PTO issues new patents. Both of today's Spotlight Patents concern aspects of digital watermarking. Assigned to Intertrust, the first patent addresses encoding and protecting data using digital signature and watermarking techniques. Assigned to Cable Television Laboratories, the second patent addresses watermarks for roaming.
8,850,214, "Methods and systems for encoding and protecting data using digital signature and watermarking techniques," assigned to Intertrust Technologies Corporation.
Abstract
Systems and methods are provided for determining a presence of a watermark in electronic data. In certain embodiments, a plurality of keys is generated, and a plurality of payloads are retrieved from electronic data using the keys. A statistical indicia of randomness is generated based on the payloads, and the presence of a watermark is determined when the indicia is below a threshold.8,850,523, "Watermarks for roaming," assigned to Cable Television Laboratories, Inc.
Abstract
A watermarking process is contemplated to facilitate branding and other message communication operations, such as to facilitate notifying a user associated with a home service provider of a watermark or communicating advertisements and/or personal messages to the user while accessing services through a visited service provider. The contemplated watermarking process may be particularly beneficial with devices having capabilities to roam between multiple service providers.
