| 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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| 07/04/2012 | CN101903183B Optically variable security element, manufacturing method, safety device, data medium and application |
| 06/27/2012 | CN101529888B Image encryption/decryption device, and method |
| 06/21/2012 | DE102010055237A1 Verfahren zum geschützten Ausführen einer kryptographischen Berechnung A method for carrying out a cryptographic calculation protected |
| 06/19/2012 | CA2242596C System for controlling access and distribution of digital property |
| 06/12/2012 | US8199913 Object authentication using embossed hidden images |
| 06/07/2012 | WO2012071617A1 Product labelling/identification |
| 05/30/2012 | EP2457227A1 Secure display of user data on a telecommunications terminal |
| 05/16/2012 | EP2453430A1 Method and device for 3D object protection by permutation of coordinates of its points |
| 05/16/2012 | EP2453429A1 Method and device for 3d object protection by permutation of coordinates of its points |
| 05/09/2012 | CN102446450A Multi-level encrypting method using yin-yang and five elements, and tai ji principles |
| 05/01/2012 | US8171294 Additional-information detection processing apparatus and method, content playback processing apparatus and method, and computer program |
| 05/01/2012 | US8170208 Image decrypting apparatus, image encrypting apparatus, and image decrypting method |
| 04/10/2012 | US8155313 Systems and methods for employing duo codes for product authentication |
| 04/05/2012 | US20120084870 Apparatus and method for embedding and extracting information in analog signals using distributed signal features and replica modulation |
| 03/21/2012 | EP2432211A1 Image encryption/decoding device, method, and program |
| 02/28/2012 | US8126142 Variable data encryption of characters printed or displayed on screen, which may be embedded in photos, images, drawings, illustrations, logos or figures, for security purposes |
| 02/23/2012 | WO2012024389A1 Detecting visible display of content |
| 01/31/2012 | CA2480487C Program encoding and counterfeit tracking system and method |
| 01/12/2012 | WO2012006136A1 Compact keyboard and cradle |
| 01/05/2012 | WO2012000898A1 Method and device for 3d object protection by permutation of its points |
| 01/05/2012 | DE102011076911A1 Einbettung von Infrarot-Wasserzeichen durch Frequenzmodulation in digitale Dokumente Embedding of infrared watermark by frequency modulation in digital documents |
| 01/04/2012 | EP2401734A1 System and method for performing exponentiation in a cryptographic system |
| 01/04/2012 | CN1694400B Randomized signal transforms and their applications |
| 12/28/2011 | EP2400476A1 Method and device for 3D object protection by permutation of its points |
| 12/27/2011 | US8085935 Embedding and extraction of information from an embedded content using replica modulation |
| 12/08/2011 | US20110299150 Light control material for displaying color, information, and images |
| 12/02/2011 | CA2741311A1 Document authentication enhancement processes |
| 12/01/2011 | DE102010021480A1 Method for hidden, analog embedding of information into sound-frequent carrier signal mixture, involves enabling lateral elongation of utilization signal and impression of carrier signal mixture for embedding information into mixture |
| 11/23/2011 | EP2388761A2 Marker placement device, marker placement detecting device, and computer readable storage medium for storing marker placement program |
| 11/10/2011 | WO2011138558A2 Method for authenticating a user requesting a transaction with a service provider |
| 11/08/2011 | US8055012 Hiding and detecting messages in media signals |
| 11/01/2011 | US8051294 Methods for audio watermarking and decoding |
| 10/30/2011 | CA2738606A1 Method and apparatus for providing flexible bit-length moduli on a block montgomery machine |
| 10/08/2011 | CA2734929A1 A device and a method for performing a cryptographic function |
| 10/04/2011 | US8031377 Encrypting image data based on paper fiber properties, printing encrypted image, and decrypting encrypted image |
| 09/20/2011 | US8023689 Robust signature for signal authentication |
| 09/15/2011 | WO2011111191A1 Image decoding device, image decoding method, and computer program for image decoding |
| 09/14/2011 | CN1659608B Multi-section decoding lens |
| 09/14/2011 | CN101542559B Coding method, decoding method, codec and data storage medium for holographic storage |
| 09/13/2011 | US8018482 Three-dimensional display device and driving method thereof |
| 09/06/2011 | US8015411 Active watermarks and watermark agents |
| 08/31/2011 | CN101540823B Image processing apparatus and image processing system and method |
| 08/23/2011 | US8006102 Method and apparatus for transmitting content data and recording and/or reproducing apparatus |
| 08/16/2011 | US8000009 Light control material for displaying color, information, and images |
| 08/11/2011 | US20110194690 Data Adaptive Message Embedding For Visible Watermarking |
| 08/03/2011 | EP2350811A1 Method and apparatus for modulus reduction |
| 07/26/2011 | US7987094 Audio encoding to convey auxiliary information, and decoding of same |
| 07/19/2011 | US7984288 Software protection apparatus and protection method thereof |
| 07/19/2011 | US7983440 Selection of I-frames for client-side watermarking |
| 07/19/2011 | CA2364433C Signal processing methods, devices, and applications for digital rights management |
| 07/13/2011 | EP2343877A1 Image encryption device/decryption device, image encryption method/decryption method, and image encryption program/decryption program |
| 07/12/2011 | US7978876 Hiding codes in input data |
| 07/06/2011 | CN1691087B System and method for decoding digital coding image |
| 07/05/2011 | CA2401981C Method and system to uniquely associate multicast content with each of multiple recipients |
| 06/30/2011 | WO2011078074A1 Image encryption system characterized by outputting image obtained by subjecting encrypted image to blurring process at intensity in accordance with inspection right owner |
| 06/28/2011 | US7971020 Embedding data in an information signal |
| 06/15/2011 | CN102097032A Root key generation device |
| 06/09/2011 | US20110133443 Combination system of variable passwords |
| 06/08/2011 | CN102090052A Apparatus, method, and computer program product for detecting embedded information |
| 06/02/2011 | US20110129114 Method for inserting watermark assistance data in a bitstream and bitstream comprising the watermark assistance data |
| 05/26/2011 | US20110123125 Digital Anti-Counterfeiting Software Method and Apparatus |
| 05/25/2011 | CN101516635B Anti-counterfeit mark, anti-counterfeit packaging and method for detecting counterfeit product |
| 05/24/2011 | US7949147 Watermarking compressed data |
| 05/19/2011 | US20110119555 Apparatus, method, and computer program product for detecting embedded information |
| 05/12/2011 | WO2011033246A3 A device and method for obfuscating visual information |
| 05/05/2011 | WO2011052180A1 Encrypted message transmission device, program, encrypted message transmission method and authentication system |
| 05/03/2011 | CA2319340C Secure distribution of digital representations |
| 04/26/2011 | US7933406 Encryption device and method, and image forming apparatus |
| 04/20/2011 | CN102027526A Method and system for embedding covert data in a text document using space encoding |
| 04/19/2011 | US7929695 Printing system and printer with electronic signature capability and method thereof |
| 04/13/2011 | CN101551956B Bar code cipher device |
| 04/12/2011 | US7925882 Data application method |
| 04/06/2011 | EP2306727A2 Robust digital watermarking |
| 04/06/2011 | EP2306726A2 Robust digital watermarking |
| 04/06/2011 | EP2306725A2 Robust digital watermarking |
| 04/05/2011 | US7919155 Document and method of making document including invisible information for security applications |
| 03/31/2011 | WO2011009840A4 Secure display of user data on a telecommunications terminal |
| 03/30/2011 | EP2301236A1 Apparatus, method, and computer program product for detecting embedded information |
| 03/30/2011 | EP1190386B1 Identifying material |
| 03/29/2011 | US7916343 Method of encoding a latent image and article produced |
| 03/24/2011 | CA2804949A1 A device and method for obfuscating visual information |
| 03/03/2011 | WO2011023087A1 Rule disclosing type authority authentication method and system |
| 02/22/2011 | US7895439 Watermarked material processing |
| 02/15/2011 | CA2548819C System and method for embedding and extracting key information |
| 02/06/2011 | CA2674827A1 Tamper evident seal methods and life cycle management system |
| 02/03/2011 | WO2011014054A1 Nonlinear boolean permutation |
| 01/27/2011 | WO2011009840A1 Secure display of user data on a telecommunications terminal |
| 01/27/2011 | DE102009033919A1 Sicheres Anzeigen von Nutzdaten auf einem Telekommunikationssendgerät Secure Viewing of user data on a telecommunications terminal equipment |
| 01/27/2011 | DE102009033918A1 Method for displaying usage data on e.g. LCD display of mobile telephone terminal of user, involves separating filter element with filter pattern from card-shaped separation substrate, and applying filter element on display device |
| 01/26/2011 | EP2278497A2 Watermark encoder and decoder enabled software and devices |
| 01/18/2011 | US7873237 Degrading 3D information |
| 01/17/2011 | CA2710064A1 System and method for reducing the computation and storage requirements for a montgomery-style reduction |
| 12/29/2010 | WO2010151103A1 Bijective substitution box |
| 12/29/2010 | WO2010148448A1 Method and system for generating a visual key |
| 12/29/2010 | CN101933066A Genuine&counterfeit certification member |
| 12/28/2010 | US7861276 Video program broadcasting apparatus, method, and program which steganographically embeds use information |
| 12/16/2010 | DE102009024893A1 Method for safe display of display data on display device by visual cryptography, involves providing display data for producing pixel graphics of two sub-pixelgraphics by foreground pixels and background pixels |
| 12/01/2010 | EP2257068A2 Method for inserting watermark assistance data in a bitstream and bitstream comprising the watermark assistance data |
| 12/01/2010 | EP2257067A1 Method for inserting watermark assistance data in a bitstream, method of watermarking said bitstream, device implementing the method of watermarking and bitstream comprising the watermark assistance data |
| 12/01/2010 | CN101902627A Method for inserting watermark assistance data in a bitstream and bitstream comprising the watermark assistance data |