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| Number | Title | Issue Date |
| 7366908 | Digital watermarking with content dependent keys and autocorrelation properties for synchronization A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of the host signal. Other watermark methods employ keys, including a key ... | 04/29/2008 |
| 7363645 | Interactive electronic program guide for use with television delivery system An interactive electronic program guide is disclosed for use with a television delivery system. The guide is generated by a set top terminal that receives a television signal from an operations center and extracts from the signal individual programs for display on a... | 04/22/2008 |
| 7359528 | Monitoring of video or audio based on in-band and out-of-band data The presently claimed invention relates generally to monitoring and/or filtering video or audio data. In one implementation a method is provided including: obtaining data representing video or audio; analyzing the data representing video or audio for an in-band sign... | 04/15/2008 |
| 7349956 | System and method for accessing and operating personal computers remotely A remote access device is disclosed for capturing, digitizing and communicating video signals from a host computer to a remote computer. The remote computer returns keyboard and mouse signals through the remote access device to the host computer to control the host ... | 03/25/2008 |
| 7349555 | Documents and apparatus to encode documents The present invention relates generally to documents, e.g., such as legal tender, currency and identification documents, and apparatus for encoding documents. One claim recites: a physical document including a machine-detectable hidden signal. Presence of the hidden... | 03/25/2008 |
| 7330563 | Documents, articles and authentication of documents and articles The present invention relates generally to physical articles, e.g., such as documents, and authenticating physical articles. One claim recites a method of determining authenticity of an analog form (e.g., a printed document such as legal tender, currency or identifi... | 02/12/2008 |
| 7324068 | Chained image display apparatus having mutual examining function A chained image display apparatus having a mutual examining function where a plurality of image display apparatuses, controlled by a central control unit and connected in series, recognize interruption of power to an image display apparatus and correspondingly notif... | 01/29/2008 |
| 7305117 | Methods and tangible objects employing machine readable data The present invention relates generally to steganography. In one implementation we provide a method comprising: receiving optical scan data representing at least a portion of a physical object. The physical object includes information steganographically hidden there... | 12/04/2007 |
| 7295680 | Embedding and detecting digital watermark in image An apparatus for embedding digital watermark information in an image, includes an image divider dividing the image into a plurality of partial images; and an embedder embedding in each of the partial images a digital watermark which indicates the digital watermark i... | 11/13/2007 |
| 7286684 | Secure document design carrying auxiliary machine readable information A two dimensional pattern design for secure documents serves as both a machine readable code and an aesthetic part of the documents' design. A method for generating the design generates a variable auxiliary message comprising message values and maps the message valu... | 10/23/2007 |
| 7271844 | Frame signal phase adjuster A frame signal phase adjuster comprises units for inputting a parallel clock and a reference signal (22-4 and 22-1); generating a frame signal from the reference signal (22-1), adjusting a phase of the frame signal (22 | 09/18/2007 |
| 7269275 | Physical objects and validation of physical objects The present invention relates generally to validating and providing physical objects. In one implementation, a physical object includes a first digital watermark carried thereon. The first digital watermark includes a first plural-bit message representing at least a... | 09/11/2007 |
| 7253917 | Image processing apparatus and its control method, computer program, and storage medium With this invention, upon scanning a print, since additional information recorded together with that print is reproduced while displaying the scanned image, a special effect that cannot normally be obtained from still images can be obtained. A print on which ... | 08/07/2007 |
| 7239734 | Authentication of identification documents and banknotes The present invention provides methods and systems that are helpful authentication of physical and electronic documents like financial documents and identification documents. Steganographic indicia plays a role in some of our implementations. In other implementation... | 07/03/2007 |
| 7224819 | Integrating digital watermarks in multimedia content A method for tracking media signals in multimedia content is provided by uniquely identifying the multimedia content with a digital watermark identifier. A video channel is preferably embedded with a first watermark identifier. The first identifier uniquely identifi... | 05/29/2007 |
| 7197164 | Time-varying video watermark A digital watermark embedder reduces a watermark signal as a function of time varying properties of video such that a watermark that would otherwise be static over frames is selectively reduced to make it imperceptible. The method computes a watermark signal corresp... | 03/27/2007 |
| 7196804 | Image processing apparatus and method, and storage medium used therewith An image processing apparatus forms an image by using a plurality of light-emitting devices to display each color. The image processing apparatus includes an input unit for inputting image information representing the image, and an adding unit for adding predetermin... | 03/27/2007 |
| 7181022 | Audio watermarking to convey auxiliary information, and media embodying same Methods of processing audio to convey auxiliary information therein without audible evidence of data alteration. Various arrangements are disclosed. One receives plural bit auxiliary data in which the auxiliary information is included, and modulates a carrier signal... | 02/20/2007 |
| 7177443 | Method and apparatus for associating identifiers with content Watermark detection in an image or the like can be optimized by exploiting the innate biases in the image to emphasize the watermark signal. The watermark signal can be trial-located with different origins in the image to find one that yields improved results. Simil... | 02/13/2007 |
| 7171020 | Method for utilizing fragile watermark for enhanced security A fragile watermark is embedded in a document. The fragile watermark provides enhance security. In one implementation, a method is provided for embedding information in an image so that the image will have different information when a scanning or printing process re... | 01/30/2007 |
| 7158654 | Image processor and image processing method A pattern signal is steganographically encoded in a content object to aid in identifying distortion (e.g., image rotation) to which the object may be subjected. The signal may include a feature that can be used to unambiguously identify correct orientation. ... | 01/02/2007 |
| 7136503 | Encoding hidden data A digital image is processed to hide information, by generally inconspicuous adjustments thereof. These adjustments can define a pattern that extends across some or all of the image. Desirably, the pattern is adapted to the particular image being encoded, so as to b... | 11/14/2006 |
| 7136502 | 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... | 11/14/2006 |
| 7130087 | Methods and apparatus to produce security documents Security documents (e.g. passports, currency, event tickets, and the like) are encoded to convey machine-readable multi-bit binary information (e.g., a digital watermark), usually in a manner not alerting human viewers that such information is present. The documents... | 10/31/2006 |
| 7127733 | System for bi-directional voice and data communications over a video distribution network The present invention relates generally to an apparatus for bi-directional communications of voice, data, and alarms, and simultaneous transmission of video signals over a single cable such as coax. In more particular, it applies to a communications system that util... | 10/24/2006 |
| 7116826 | Embedding with error-correction encoding A maximum embedding amount can be ensured depending on information to be embedded, by determining an error-correction capability in correspondence with the characteristic of embedded information. For this purpose, upon multiplexing additional information, the additi... | 10/03/2006 |
| 7099026 | Unique printer pass code system and method A unique printer pass code system and method provide the ability to remotely generate a unique pass code for printers operating under the system and method. A printer is configured to independently verify that a submitted pass code is the correct pass code for that ... | 08/29/2006 |
| 7072493 | Robust and stealthy video watermarking into regions of successive frames A technology is described herein for the protection of rights in the content of a video sequence. In one example the technology embeds an information pattern in one or more regions of a video signal. A region includes a plurality of successive frames. The example do... | 07/04/2006 |
| 7072487 | Watermark detection using adaptive color projections Matching the color axis of the watermark detector to the color direction used by the watermark embedder: A preferred projection axis is determined for each pixel. The preferred projection axis for each pixel is determined by examining the color values of the surroun... | 07/04/2006 |
| 7068812 | Decoding hidden data from imagery A digital image in which hidden information has been encoded, is processed to discern the hidden information. This processing can include identifying geometric distortions of the image (e.g., cropping, scaling, rotation), and compensating for such identified distort... | 06/27/2006 |
| 7055034 | Method and apparatus for robust embedded data This invention describes a method and apparatus for the increasing the robustness of embedded data. Since many times embedded data is susceptible to removal by an unauthorized person, one preferred embodiment enables an action such that removal of the embedded data ... | 05/30/2006 |
| 7054463 | Data encoding using frail watermarks Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be disting... | 05/30/2006 |
| 7050603 | Watermark encoded video, and related methods Watermarks in video signals or the accompanying audio track are used to associate video objects in a video sequence with object specific actions or information. A video object refers to a spatial and temporal portion of a video signal that depicts a recognizable obj... | 05/23/2006 |
| 7043052 | Digital authentication with analog documents Security of photographic identification documents is enhanced by embedding within the photographic image encoded information that may be correlated to other information pertaining to the individual represented by the image, such other information being, for example,... | 05/09/2006 |
| 7024435 | Data recording device, data recording method, data reproducing device and data reproducing method When the size of a file which has been read out from a magnetic disc unit less than a predetermined value, a CPU the file onto a magnetic tape of a magnetic tape unit as an archive file of a standard form to which attribute information where its size is represented ... | 04/04/2006 |
| 7016516 | Authentication of identification documents Security of photographic identification documents is enhanced by providing machine-readable information that may be correlated to other information pertaining to the individual represented by the image, such other information being, for example, printed on the docum... | 03/21/2006 |
| 7003132 | Embedding hidden auxiliary code signals in media Methods for embedding and reading auxiliary messages from image signals use embedded code signals modulated with the auxiliary message. These embedded ode signals may be used to convey hidden tracking codes in images, video and printed objects. The embedded code sig... | 02/21/2006 |
| 6987862 | Video steganography An input content signal, e.g., representing video, is encoded to hide plural-bit auxiliary data therein. The process generates an intermediate signal that is a function of (a) the plural-bit auxiliary data, and (b) data related to human perception attributes of the ... | 01/17/2006 |
| 6978036 | Tamper-resistant authentication techniques for identification documents The present invention provides techniques that are helpful in resolving the authentication of an identification document or banknote. The document or banknote includes a security enhancer. The enhancer can be a graphic or artwork design, or can be realized with line... | 12/20/2005 |
| 6975743 | Robust and stealthy video watermarking into regions of successive frames An implementation of a technology is described herein for the protection of rights in the content of a video sequence. This technology further generally relates to a technology facilitating embedding imperceptible, de-synchronization-resistant watermarks in video se... | 12/13/2005 |