Patent application number | Description | Published |
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 |
20120014557 | 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. | 01-19-2012 |
20120076295 | Message Key Generation - The disclosure relates to message encoding. One claim recites an apparatus comprising: electronic memory for storing a digital watermark plural-bit message; an electronic processor programmed for: providing a plural-bit seed; randomizing the plural-bit seed; and encoding the randomized plural-bit seed with convolutional encoding, the encoded, randomized plural-bit seed comprising a key for transforming the digital watermark plural-bit message. Of course, other claims and combinations are provided too. | 03-29-2012 |
20120076346 | Message Encoding - The present invention relates to message encoding. One claim recites a method of providing information to transform a plural-bit message for steganographic encoding, said method comprising: providing a unique plural-bit number; altering the unique plural-bit number; error correction encoding the altered, unique plural-bit number, wherein the error correction encoded, altered, unique plural-bit number comprises information for transforming an independent message. Of course, other claims and combinations are provided too. | 03-29-2012 |
20140036894 | 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. | 02-06-2014 |
20140161254 | MESSAGE KEY GENERATION - The disclosure relates to message encoding. One claim recites an apparatus comprising: electronic memory for storing a plural-bit message; an electronic processor programmed for: obtaining a multi-bit seed; transforming the multi-bit seed by applying randomizing process; and encoding the transformed multi-bit seed with convolutional encoding, the encoded seed comprising a key for transforming the plural-bit message, the key providing security for the plural-bit message. Of course, other claims and combinations are provided too. | 06-12-2014 |
Patent application number | Description | Published |
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 |
20110299725 | METHODS INVOLVING MAPS, IMAGERY, VIDEO AND STEGANOGRAPHY - The disclosure describes methods and apparatus of providing steganographic indicia or digital watermarking in image or video data. One implementation provides a method of embedding a digital watermark in image data captured by an imager, with watermark embedding occurring on-chip with the imager. Another implementation provides a method of managing images. Each of the images comprises plural-bit data steganographically embedded therein in the form of a digital watermark, with the plural-bit data corresponding to a geo-location. Yet another implementation provides a method of identifying locations on a map, with the map being for display via a computer display. Still another implementation provides a method of introducing a watermark message to a watermark embedder located on-chip with an image array. Other implementations and embodiments are provided as well. | 12-08-2011 |
20120179914 | Digital Watermark Key Generation - This disclosure relates to message encoding. One claim recites a digital watermark key generation method in which the key providing security for a plural-bit message. The method comprises: providing a plural-bit seed; randomizing the plural-bit seed; using a programmed electronic processor for encoding the randomized plural-bit seed with convolutional encoding, the encoded seed comprising a key; and transforming an independent message with the key, the independent message to be used in a digital watermark encoding process. Of course, other claims and combinations are provided too. | 07-12-2012 |
20120179951 | Digital Watermark Key Generation - This disclosure relates to message encoding. Once claim recites an apparatus comprising: electronic memory for buffering identifying data associated with an entity or client; and a multi-purpose electronic processor programmed for: modifying the identifying data with a random or pseudo-random signal; error correction encoding the modified identifying data; and transforming a plural-bit message with the error correction encoded, modified identifying data to produce a key for use with message encoding. Of course, other claims and combinations are provided as well. | 07-12-2012 |