| Patent application number | Description | Published |
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| 20080260201 | Digital Watermarking Apparatus and Methods - The present invention relates to various digital watermarking methods and systems. In one embodiment, monetary objects can be watermarked to signify currency denomination information. The information, once extracted, is used to provide feedback regarding the currency denomination. An audio signal or Braille output can be provided as feedback. In another embodiment, a document management system can be based on watermarks. Embedded watermarks can be used to track document history, determine document version information, and enhance overall security. Handheld computing devices can be advantageously employed with these embodiments. Of course, other embodiments are provided and claimed as well. | 10-23-2008 |
| 20090213828 | WIRELESS LOCAL AREA NETWORK-BASED POSITION LOCATING SYSTEMS AND METHODS - The location of one or more mobile nodes in a wireless local area network (WLAN) is determined. Nodes in the WLAN include respective ping drivers to generate ping event values related to transmit count stamps and receive count stamps for wireless messages exchanged between the nodes. Each wireless message is associated with a transmit offset corresponding to an expected transmit time. A sorting module groups the ping event values and produces a difference between the respective receive count stamps and the transmit count stamps for each wireless message. Based on the sorted ping event values, the sorting module generates transmit offset values relating to the transmit offsets. A space-time calibration unit generates, from the sorted differences and the transmit offset values, a clock rate solution and a location solution for at least one of the nodes in the WLAN. | 08-27-2009 |
| 20100142749 | Digital Watermarking Apparatus and Methods - The present invention relates to various digital watermarking methods, apparatus and systems. One claim recites a method of determining a size or denomination of a momentary object. The method includes: utilizing a configured, multi-purpose electronic processor, decoding a digital watermark embedded in a monetary object, the watermark including data corresponding to a denomination of the monetary object; based on the data, determining feedback to indicate the denomination of the monetary object; and providing the feedback. Handheld computing devices can be advantageously employed with this combination. Of course, other combinations are provided and claimed. | 06-10-2010 |
| 20110007364 | Electronic Forms Using Indicia, Sometimes Hidden Indicia - The present disclosure relates to creating and managing electronic documents. One claim recites a computerized tablet including: electronic memory for storing electronic data corresponding to an application document, an electronic processor, and a display. The electronic processor is programmed for: obtaining the electronic data corresponding to an application document; analyzing the electronic data to detect steganographic indicia encoded therein, the steganographic indicia comprising a plural-bit identifier; and generating an electronic form based at least in part on the steganographic indicia, the electronic form comprising at least one field to receive user input. The display is for displaying the electronic version of the application document, and for receiving user input corresponding to the at least one field. Other claims and combinations are provided as well. | 01-13-2011 |
| 20110007935 | Digital Watermarking in Data Representing Color Channels - The present disclosure relates to digital watermarking. One claim recites a method to detect two or more different digital watermarks in media. The method includes: receiving captured imagery of the media, the captured imagery comprising a plurality of image frames; for a first image frame applying a first watermark detector to search for a first digital watermark hidden within the first image frame, in which an electronic processor is programmed as the first watermark detector; and for a second image frame applying a second, different watermark detector to search for a second, different watermark hidden within the second image frame, in which an electronic processor is programmed as the second watermark detector. Other claims and combinations are provided too. | 01-13-2011 |
| 20110069861 | Distributed Decoding of Digitally Encoded Media Signals - Digital data is decoded from media signals (e.g., audio, images, video, etc.) using a distributed processing in which a first device receives and pre-processes the signal, and transmits it to a remote device for further decoding. One method pre-filters the media signal, leaving a residual from which digital data is decoded. Other arrangements progressively send portions of the signal for decoding operations. | 03-24-2011 |
| Patent application number | Description | Published |
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| 20100008538 | Watermarking Methods, Systems and Apparatus - 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. | 01-14-2010 |
| 20100310118 | Printing Media and Methods Employing Digital Watermarking - Stationery, or other printable media, is encoded with a digital watermark. The watermark is not conspicuous to a human observer of the media, yet conveys plural bits of auxiliary information when optically scanned and digitally processed. The watermark can be formed by ink-jet printing, or otherwise. The encoded information can be used for various purposes, including authenticating the document as an original, linking to associated on-line resources, and distinguishing seemingly-identical versions of the same document (document serialization). | 12-09-2010 |
