| 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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| 11/30/2010 | US7844054 Stream recording and/or reproducing apparatus and method |
| 11/23/2010 | US7840816 Identifying material stored using a signature as a retrieval index |
| 11/09/2010 | US7830969 Encoding devices for scalable data streaming |
| 11/07/2010 | CA2701433A1 Secured integrated circuit that includes means for dissemination of countermeasure mask values |
| 10/26/2010 | US7822990 Online data encryption and decryption |
| 10/19/2010 | US7818577 Identifying material using a watermark and a signature |
| 10/06/2010 | EP2237247A1 Genuine&counterfeit certification member |
| 10/06/2010 | EP2235713A1 Method and apparatus for display of secure visual content |
| 10/05/2010 | US7809952 System for registering sensing device with relay device |
| 10/05/2010 | US7808599 Flat display module |
| 09/21/2010 | US7802100 Watermark system |
| 09/16/2010 | DE102004022976B4 Steganographisches Druckverfahren und Verifikationssystem Steganographic printing process and verification system |
| 09/14/2010 | US7796753 Digital anti-counterfeiting software method and apparatus |
| 09/09/2010 | US20100228809 Randomized Signal Transforms and Their Applications |
| 09/07/2010 | US7792331 Composition of raster and vector graphics in geographic information systems |
| 09/07/2010 | US7792291 XOR encoded document for secure message exchange |
| 09/02/2010 | WO2010096902A1 System and method for performing exponentiation in a cryptographic system |
| 09/02/2010 | US20100220934 Hiding Codes in Input Data |
| 09/02/2010 | CA2752750A1 System and method for performing exponentiation in a cryptographic system |
| 08/25/2010 | EP0852441B1 Data hiding method |
| 08/17/2010 | US7778418 System and method for copy protection for digital signals |
| 08/17/2010 | US7778416 Print data communication with data encryption and decryption |
| 08/10/2010 | US7773751 Apparatus and method for controlling the copy and play of a digital audio contents |
| 08/10/2010 | US7773749 Authentication method and system |
| 08/04/2010 | EP2213037A1 Fault detection in exponentiation and point multiplication operations using a montgomery ladder |
| 08/03/2010 | US7770014 Randomized signal transforms and their applications |
| 07/06/2010 | US7752446 System and method for digital watermarking of data repository |
| 06/22/2010 | US7743426 Information data and management data processing apparatus and method |
| 06/22/2010 | US7740281 Method and system for producing certified documents and the like |
| 06/22/2010 | CA2318133C System for processing an information signal |
| 06/16/2010 | EP2197205A2 Signal conversion apparatus and method |
| 06/10/2010 | US20100142005 Visual cryptography and voting technology |
| 06/09/2010 | EP1183872B1 Watermarked material processing |
| 06/03/2010 | WO2010061456A1 Information processing device, information processing method and image processing program |
| 06/02/2010 | CN1398385B Identification device,terminal communicating with the identification device and method for authenticating photographing image |
| 05/27/2010 | US20100131768 Method and apparatus for digital watermarking |
| 05/27/2010 | US20100131767 Methods for Audio Watermarking and Decoding |
| 05/27/2010 | US20100131759 Method and system for authenticating senders and recipients in a carrier system and providing receipt of specified content by a recipient |
| 05/27/2010 | US20100131753 Image forming apparatus, host apparatus and encryption method of job object document thereof |
| 05/18/2010 | US7720223 System and method of content copy control |
| 05/06/2010 | WO2010048721A1 Collision-resistant elliptic curve hash functions |
| 05/06/2010 | WO2010048719A1 Method and apparatus for modulus reduction |
| 05/06/2010 | CA2741698A1 Method and apparatus for modulus reduction |
| 04/30/2010 | CA2642399A1 Collision-resistant elliptic curve hash functions |
| 04/27/2010 | US7703809 Printed product and method for the production thereof |
| 04/14/2010 | EP2174445A1 Method of providing text representation of a cryptographic value |
| 03/30/2010 | US7689823 Content distribution/protecting method and apparatus |
| 03/24/2010 | CN101682503A Image encrypting device, image decrypting device, method and program |
| 03/18/2010 | US20100067691 Document certification and authentication system |
| 03/16/2010 | US7680274 Security element comprising micro- and macrostructures |
| 03/04/2010 | US20100054467 Image forming system and security printing method thereof |
| 02/25/2010 | US20100046753 Information output system, method, and program for tampering detection |
| 02/25/2010 | US20100046750 Coding method, decoding method, codec and data storage medium for holographic storage |
| 02/24/2010 | EP2157560A2 Document data encryption method and document data encryption system |
| 02/17/2010 | EP2154878A1 Image encyption device, image decyption device, method, and program |
| 02/17/2010 | EP2154815A1 Image encrypting device, image decrypting device, method and program |
| 02/17/2010 | CN100590682C Printing and printer method for two-dimensional code symbol |
| 02/16/2010 | US7664261 Encryption processor |
| 02/11/2010 | US20100034379 Content assessment apparatus, content assessment method, information reproducing apparatus, and information reproducing method |
| 02/09/2010 | US7660991 Embedding, processing and detection of digital content, information and data |
| 02/05/2010 | CA2670184A1 Signcryption scheme based on elliptic curve cryptography |
| 02/04/2010 | US20100027853 Image encryption system and method for automatically encrypting image of at least partially nude person and digital image capture device having same |
| 02/03/2010 | CN101640003A Rule-revealing type authentication method and system |
| 02/03/2010 | CN100587764C Method for encryption and decryption of data using pixel |
| 01/28/2010 | US20100021004 Hiding and Detecting Messages in Media Signals |
| 01/28/2010 | US20100020970 System And Method For Camera Imaging Data Channel |
| 01/26/2010 | US7653198 Recording medium for data including concealment data and recording/reproducing method for such data |
| 01/20/2010 | EP2146290A1 Apparatus method and system for registration of a publisher prefix for document object identifiers |
| 01/20/2010 | CN100583750C Desynchronized fingerprinting method and system for digital multimedia data |
| 01/19/2010 | US7650646 Information-recording apparatus, information reproduction apparatus, information-recording method, information reproduction method and computer program |
| 01/19/2010 | US7650499 Encryption apparatus and decryption apparatus |
| 01/14/2010 | WO2010004934A1 Apparatus, method, and computer program product for detecting embedded information |
| 01/12/2010 | US7646867 System and/or method for encrypting data |
| 12/23/2009 | CN100574408C Post decode watermarking of media |
| 12/22/2009 | US7636849 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 12/22/2009 | US7636847 Material distribution apparatus |
| 12/16/2009 | EP2133853A1 Image encryption apparatus and image decryption apparatus |
| 12/15/2009 | US7634660 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 12/10/2009 | WO2009116953A3 Method and system for embedding covert data in a text document using space encoding |
| 12/09/2009 | EP1290877B1 Data scrambling and descrambling system |
| 12/08/2009 | US7630494 Forgery-proof packaging material with a security feature |
| 12/03/2009 | WO2009144802A1 Information generating equipment and method, information reproduction equipment and method, and recording medium |
| 12/03/2009 | WO2009144796A1 Electronic document processing system, method, and program |
| 12/03/2009 | WO2009143731A1 An anti-forgery system and its method for identifying the truth of an object by verifying a micro-code and a verification code |
| 12/01/2009 | US7627124 Wireless communication authentication process and system |
| 11/24/2009 | US7623661 Motion picture encoding and counterfeit tracking system and method |
| 11/10/2009 | US7617398 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 11/05/2009 | US20090276619 Parallel distribution and fingerprinting of digital content |
| 11/05/2009 | US20090274298 Method for producing a security feature on a flat substrate |
| 11/03/2009 | US7613320 Digital watermark embedding apparatus and method, and digital watermark analysis apparatus, method and program |
| 11/03/2009 | US7612276 Method and system for synthesizing electronic transparent audio |
| 10/29/2009 | US20090268904 Display device for visually reconstructing an image |
| 10/22/2009 | US20090262932 Embedding and extraction of information from an embedded content using replica modulation |
| 10/22/2009 | US20090262931 Device, method, and program for image encryption/decryption |
| 10/21/2009 | CN100553285C Electronic water print embedding device and its embedding method |
| 10/20/2009 | US7607017 Embedding data in material |
| 10/20/2009 | US7606426 Image processing apparatus and method and storage medium |
| 10/20/2009 | US7606366 Apparatus and method for embedding and extracting information in analog signals using distributed signal features and replica modulation |
| 10/20/2009 | US7604257 Printed product |
| 10/15/2009 | US20090257586 Image processing apparatus and image processing method |