New pending patent applications are published on Thursdays. Both of today's Spotlight Applications concern aspects of digital watermarking. Assigned to Digimarc, the first application discloses techniques for smartphone payments and transactions using watermarks. Assigned to Infosys (IN), the second application discloses techniques for embedding and extracting a watermark in a text document.
20150227925, "Methods and arrangements for smartphone payments and transactions," assigned to Digimarc.
The disclosure relates to digital signal processing such as digital watermarking, and the utilization of portable devices for such signal processing. One claim recites a portable device comprising a touch screen display; memory for storing a payload, and for storing portions of imagery; means for processing the payload with an erasure code generator, in which the erasure code generator produces a plurality of outputs corresponding to the payload; means for embedding a first of the plurality of outputs in a first portion of the imagery and proceeding with embedding until each of the plurality of outputs is embedded in portions of the imagery; and means for causing the touch screen display to display embedded portions of imagery so that a digital watermark reader analyzing captured image data representing the touch screen display can recover the payload. Of course, other claims and combinations are provided.
20150228045, "Methods for embedding and extracting a watermark in a text document and devices thereof," assigned to Infosys (IN).
Method, apparatus and non-transitory computer readable medium for embedding and extracting a watermark in a text document using digital watermarking processes is disclosed. When the text document is watermarked, the following steps are performed. The pages of the text document are transformed into corresponding images. Then, the margins on each of the images are detected and cropped to generate the cropped images. The cropped images are segmented into blocks among which some blocks are selected based on content of each block. The watermark is embedded in the selected blocks using a digital watermarking process. When the watermark from the watermarked text document is extracted, the watermark-embedding process is referred to determine the block information, for selecting each block of a watermarked text document, from where the watermark needs to be extracted.