| Patents for G09C 5 - Ciphering or deciphering apparatus or methods not provided for in other groups of this subclass, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages (2,737) |
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| 03/27/2007 | US7197644 Systems and methods for providing hardcopy secure documents and for validation of such documents |
| 03/27/2007 | US7197162 Image processing apparatus and method, computer program, and computer-readable storage medium |
| 03/27/2007 | US7197157 Image sensing apparatus and method for adaptively embedding a watermark into an image |
| 03/22/2007 | WO2006085151A3 System and method of generic symbol recognition and user authentication using a communication device with imaging capabilities |
| 03/20/2007 | US7194635 Method for secure delivery of digital image data using an embedded watermark based on a receiving indentity |
| 03/14/2007 | CN1928305A Smart IC card remote control antitheft device |
| 03/14/2007 | CN1304914C System and method for digital watermarking of data repository |
| 03/13/2007 | US7191334 Embedding auxiliary data in a signal |
| 03/06/2007 | US7188249 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/06/2007 | US7188247 System and method of content copy control |
| 03/06/2007 | US7188186 Process of and system for seamlessly embedding executable program code into media file formats such as MP3 and the like for execution by digital media player and viewing systems |
| 02/28/2007 | CN1302434C Watermark embedding method and arrangement |
| 02/22/2007 | WO2007021124A1 Method for encryption and decryption of data using pixel |
| 02/21/2007 | EP0900500B1 Embedding supplemental data in an encoded signal |
| 02/20/2007 | US7181622 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 02/20/2007 | US7181069 Image processing apparatus |
| 02/20/2007 | US7181022 Audio watermarking to convey auxiliary information, and media embodying same |
| 02/15/2007 | WO2007018091A1 Encrypted content and decryption key providing system |
| 02/14/2007 | CN1911675A High information quantity antifalse seal |
| 02/13/2007 | US7177525 Digital watermark embedding method, digital watermark embedding apparatus and recording medium having a digital watermark |
| 02/13/2007 | US7177442 Methods and systems for fingerprinting digital data |
| 02/07/2007 | EP1750426A1 Methods and apparatus for embedding data and for detecting and recovering embedded data |
| 01/25/2007 | US20070019837 Image Data Processing |
| 01/24/2007 | CN1296864C Method and device for identifying material |
| 01/23/2007 | US7167599 Method and device for controlling multimedia data watermark |
| 01/17/2007 | EP1330784B1 Contents forming method and contents reproducing apparatus and method |
| 01/16/2007 | US7165177 Method of protecting an electronic chip against fraud |
| 01/16/2007 | US7164393 Display of symmetrical patterns with encoded information |
| 01/10/2007 | CN1893530A Information processing apparatus and its control method, computer program and storage medium |
| 01/10/2007 | CN1294738C Method for detecting watermark in information signal |
| 01/09/2007 | US7162638 Electronic data management system and method |
| 01/09/2007 | US7162637 Image verification system |
| 01/02/2007 | US7159117 Electronic watermark data insertion apparatus and electronic watermark data detection apparatus |
| 01/02/2007 | US7158655 Systems for fingerprinting digital data |
| 12/27/2006 | CN1291850C Image processing device and its method |
| 12/26/2006 | US7155068 Systems for spectral multiplexing of source images to provide a composite image, for rendering the composite image, and for spectral demultiplexing the composite image, which achieve increased dynamic range in a recovered source image |
| 12/26/2006 | US7154560 Watermarking of digital image data |
| 12/19/2006 | US7152047 System and method for production and authentication of original documents |
| 12/13/2006 | CN1290290C Method for computerized voice data hidden |
| 12/13/2006 | CN1290054C Method and apparatus for original information water mark inlaying, water-mark information conreying and reconstructuring water-mark |
| 12/07/2006 | WO2006128214A1 Device for keeping track of passwords |
| 12/07/2006 | US20060274954 Image processing apparatus |
| 12/06/2006 | EP1046169B1 System and method for copy protection for digital signals |
| 12/06/2006 | CN1288904C Digital watermark embedding method and equipment and record medium with digital watermark |
| 12/05/2006 | US7146501 Method and apparatus for encrypting and decrypting data using encrypting key contained in electronic watermark |
| 12/05/2006 | US7146394 Watermark detection |
| 12/05/2006 | US7146339 Multiplexing user information to an output image |
| 11/30/2006 | WO2006127826A2 Display mounting apparatus |
| 11/29/2006 | CN1287595C Content distribution/protecting method and apparatus |
| 11/29/2006 | CN1287381C Duplicating protective system and method for digital signal |
| 11/23/2006 | DE19507043B4 Verfahren zur Erzeugung und Verteilung unpersonalisierter vertraulicher elektronischer Schlüssel Process for the production and distribution unpersonalized confidential electronic key |
| 11/21/2006 | US7139408 Transform domain watermarking of image signals |
| 11/21/2006 | CA2170834C Apparatus and method for enhancing the security of negotiable documents |
| 11/14/2006 | US7136503 Encoding hidden data |
| 11/09/2006 | US20060253781 Methods and apparatus for interactive point-of-view authoring of digital video content |
| 11/09/2006 | US20060251251 Embedding data in an information signal |
| 11/08/2006 | CN2836140Y Coder for automobile anti-theft device |
| 11/02/2006 | WO2006116394A2 System reactions to the detection of embedded watermarks in a digital host content |
| 11/02/2006 | WO2006116270A2 Security enhancements of digital watermarks for multi-media content |
| 11/02/2006 | CA2605646A1 System reactions to the detection of embedded watermarks in a digital host content |
| 11/02/2006 | CA2605641A1 Security enhancements of digital watermarks for multi-media content |
| 11/01/2006 | CN1856100A Digital watermark embedding method, digital watermark embedding apparatus and recording medium having a digital watermark |
| 11/01/2006 | CN1283103C Duplicating protective system and method for digital signal |
| 11/01/2006 | CN1283102C Duplicating protective system and method for digital signal |
| 10/26/2006 | US20060239504 Automated digital watermarking methods using neural networks |
| 10/26/2006 | US20060239503 System reactions to the detection of embedded watermarks in a digital host content |
| 10/26/2006 | US20060239502 Methods and apparatus for enhancing the robustness of watermark extraction from digital host content |
| 10/26/2006 | US20060239501 Security enhancements of digital watermarks for multi-media content |
| 10/26/2006 | US20060239500 Method of and apparatus for reversibly adding watermarking data to compressed digital media files |
| 10/26/2006 | US20060239454 Image forming method and an apparatus capable of adjusting brightness of text information and image information of printing data |
| 10/24/2006 | US7127112 Systems for spectral multiplexing of source images to provide a composite image, for rendering the composite image, and for spectral demultiplexing of the composite image by use of an image capture device |
| 10/18/2006 | CN1280820C Recording method and equipment, reprdoucing method and equipment |
| 10/17/2006 | US7123743 Method and arrangement for detecting a watermark in an information signal |
| 10/17/2006 | US7123742 Print user interface system and its applications |
| 10/17/2006 | US7123741 Technique of embedding and detecting digital watermark |
| 10/17/2006 | US7123739 Copy protection via multiple tests |
| 10/12/2006 | WO2005057356A3 System and method for controlling display of copy-never content |
| 10/12/2006 | DE102005016818A1 Object image optical encryption device for safety engineering, has hole apertures and detectors, which are arranged so that direction of axis of channel is irregular and also provides encryption code, where axis forms connection line |
| 10/03/2006 | US7116781 Counteracting geometric distortions in watermarking |
| 09/26/2006 | US7114073 Digital contents generating apparatus and digital contents reproducing apparatus |
| 09/21/2006 | US20060210109 Multiple Watermarks In Content |
| 09/21/2006 | US20060210074 Digital recording device digital reproduction device digital recording/reproduction device encryption device decryption device, encryption method and decryption method |
| 09/20/2006 | EP1257921A4 Watermark encoder and decoder enabled software and devices |
| 09/19/2006 | US7111171 Parallel distribution and fingerprinting of digital content |
| 09/13/2006 | EP1700251A2 System and method for embedding and extracting key information |
| 09/12/2006 | US7107453 Authenticatable graphical bar codes |
| 09/12/2006 | US7107450 Content-based authentication of graph presented in text documents |
| 09/07/2006 | US20060197335 Printed product |
| 08/29/2006 | US7100050 Secured signal modification and verification with privacy control |
| 08/29/2006 | US7099491 Contents forming method and contents reproducing apparatus and method |
| 08/24/2006 | DE19920045B4 Empfangsvorrichtung, Übertragungsvorrichtung und Kommunikationssystem, die eine Wasserzeichen-Einfügemethode verwenden Receiving apparatus, transmission apparatus and communication system using a watermark insertion method |
| 08/23/2006 | CN1822029A Conditioned decoding flexible article tag and device base on magnetic dot |
| 08/15/2006 | US7092910 Method, apparatus, and system for processing information by attaching information to digital data, and storage medium storing computer-readable program codes to carry out the method |
| 08/15/2006 | US7092522 Apparatus for solving system of equations on finite field and apparatus for inverting element of extension field |
| 08/15/2006 | US7091826 User authentication system using biometric information |
| 08/10/2006 | US20060179318 Apparatus and methods for inserting and detecting electronic watermark |
| 08/10/2006 | US20060178997 Systems and methods for authoring and protecting digital property |
| 08/10/2006 | US20060177057 Object authentication using embossed hidden images |
| 08/09/2006 | EP1506467B1 System and method for digital watermarking of data repository |
| 08/09/2006 | EP1002388B1 Apparatus and method for embedding and extracting information in analog signals using distributed signal features |