On Thursdays the USPTO publishes new patent applications. Both of today's Spotlight Applications concern aspects of digital watermarking. Assigned to Digimarc, the first application discloses techniques for using watermarks with images or video. Assigned to IBM, the second application discloses techniques for generating a watermark signal.
This disclosure describes, e.g., methods, systems, sensors and apparatus for steganographically encoding information in image or video data. One claim recites a method of introducing a message to a watermark embedder located on-chip with an image array. The method includes the acts of: color converting image data provided from the image array, in which the color converting provides a multi-color approximation per pixel; receiving color converted image data at the watermark embedder; receiving the message from at least one of a random access memory (RAM) or a chip interface; communicating the message to the watermark embedder; and steganographically embedding the message in the color converted image data. Of course, other claims are provided too.
20100011217, "Watermark signal generating apparatus," assigned to IBM.
An apparatus 10 for generating watermark signals to be embedded as a digital watermark in real-time contents includes: input means 12 for inputting the real-time contents; an input buffer 14 for storing the real-time contents; generation means for generating watermark signals corresponding to predicted intensities of the real-time contents from divided real-time contents; and an output buffer 18 for storing the generated watermark signals to be outputted. The generation means is configured by including prediction means 16 for predicting intensities of the watermark signals; control means 20 for controlling embedding by use of a message to be embedded as the digital watermark in the divided real-time contents; and means 22 for generating the watermark signals to be outputted.