| 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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| 10/08/2009 | US20090252323 Methods, techniques and system for maintaining security on computer systems |
| 10/07/2009 | EP2107544A1 Image decryption apparatus |
| 10/07/2009 | CN101551956A Bar code cipher device |
| 09/24/2009 | WO2009116953A2 Method and system for embedding covert data in a text document using space encoding |
| 09/23/2009 | EP2104331A1 Image processing apparatus and image processing method for partial encryption of image blocks |
| 09/23/2009 | EP2104102A1 Contents judging device, contents judging method, information reproducing device, information reproducing method and information recording medium |
| 09/23/2009 | CN101542559A Coding method, decoding method, codec and data storage medium for holographic storage |
| 09/23/2009 | CN101540823A Image processing apparatus and image processing system and method |
| 09/22/2009 | US7593545 Determining whether two or more creative works correspond |
| 09/09/2009 | EP2097890A2 Coding method, decoding method, codec and data storage medium for holographic storage |
| 09/08/2009 | US7587603 Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections |
| 09/08/2009 | CA2504316C Method and system for digital image signatures |
| 09/03/2009 | US20090222673 System for controlling access and distribution of digital property |
| 09/03/2009 | US20090220077 Unit using operating system and image forming apparatus using the same |
| 09/03/2009 | US20090220076 Image decrypting apparatus, image encrypting apparatus, and image decrypting method |
| 09/01/2009 | US7583814 Protecting images with an image watermark |
| 08/26/2009 | CN101516635A Anti-counterfeit packaging |
| 08/26/2009 | CN100534181C Increasing integrity of watermarks using robust features |
| 08/18/2009 | US7577843 System and method for controlling contents by plurality of pieces of control information |
| 08/12/2009 | EP1700251A4 System and method for embedding and extracting key information |
| 08/05/2009 | EP2085895A1 Apparatus, method and system for multiple resolution affecting information access |
| 08/04/2009 | US7571323 Image processor, method thereof, computer program, and computer readable storage medium |
| 07/28/2009 | US7568105 Parallel distribution and fingerprinting of digital content |
| 07/28/2009 | US7568103 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 07/28/2009 | US7567686 Hiding and detecting messages in media signals |
| 07/21/2009 | US7564973 Digital watermark embedding device and digital watermark embedding method |
| 07/16/2009 | DE112007001726T5 Antifälschungsverpackung Anti-counterfeiting packaging |
| 07/15/2009 | EP2079228A1 Image encryption/decryption device, method, and program |
| 07/15/2009 | EP2079028A1 Apparatus, method, and system for providing DRM protected content with content permanence |
| 07/14/2009 | US7562141 Using an information image to perform a predetermined action |
| 07/08/2009 | CN100511333C Printing method for two-dimensional code symbol, and printer |
| 06/30/2009 | US7555650 Techniques for reducing the computational cost of embedding information in digital representations |
| 06/25/2009 | DE102007059550A1 Optisch variables Sicherheitselement An optically variable security element |
| 06/24/2009 | EP1264436A4 Method and system to uniquely associate multicast content with each of multiple recipients |
| 06/16/2009 | US7548887 Information-signal playback system, information-signal reading apparatus, information-signal processing apparatus, information-signal playback method, information-signal reading method and information-signal processing apparatus |
| 06/16/2009 | US7548633 Data processing apparatus and method, data processing program, and storage medium |
| 06/16/2009 | US7548619 System and method for copy protection for digital signals |
| 06/11/2009 | WO2009073584A1 Method and apparatus for display of secure visual content |
| 06/11/2009 | WO2009072387A1 Genuine & counterfeit certification member |
| 06/11/2009 | WO2008128528A3 Anti-tapping and manipulation encoding for online accounts |
| 06/09/2009 | US7546244 Image processing system and information processing method |
| 06/09/2009 | US7545938 Digital watermarking which allows tampering to be detected on a block-specific basis |
| 06/09/2009 | CA2174413C Steganographic methods and apparatuses |
| 06/04/2009 | US20090141892 Security printing method and system for enhancing security printing |
| 06/03/2009 | EP1156662B1 Method for embedding electronic watermark, decoding method, and devices for the same |
| 06/02/2009 | US7542584 Image processing method, image processing apparatus, program and recording medium that can reduce image quality degradation |
| 05/26/2009 | CA2360440C Recording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method |
| 05/21/2009 | US20090129592 Method of forming a securitized image |
| 05/19/2009 | US7536555 Methods for audio watermarking and decoding |
| 05/12/2009 | US7533266 Watermark-based access control method and device |
| 05/07/2009 | WO2009055904A1 Fault detection in exponentiation and point multiplication operations using a montgomery ladder |
| 05/07/2009 | CA2701573A1 Fault detection in exponentiation and point multiplication operations using a montgomery ladder |
| 04/30/2009 | CA2642116A1 Cryptographic system configured for extending a repetition period of a random sequence |
| 04/29/2009 | EP2053525A2 Method, apparatus and computer medium for effecting registration of a persistent document identifier |
| 04/29/2009 | EP2052529A1 Document with linked viewer file for correlated printing |
| 04/28/2009 | US7526548 Distributing an information image |
| 04/23/2009 | WO2009050884A1 Content reproducing device, content reproducing method, recording medium, and integrated circuit |
| 04/21/2009 | US7523311 Method for embedding electronic watermark, decoding method, and devices for the same |
| 04/15/2009 | EP2003634A9 Secret code medium |
| 04/01/2009 | CN100474885C Printed document falsification detection device and falsification detection method |
| 03/18/2009 | CN100470655C Copy control method |
| 03/03/2009 | US7499564 Methods for decoding watermark data from audio, and controlling audio devices in accordance therewith |
| 02/26/2009 | US20090052666 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 |
| 02/19/2009 | US20090049304 Digital watermark embedding apparatus and method, and digital watermark analysis apparatus, method and program |
| 02/04/2009 | EP0981902B1 Watermark detection |
| 02/04/2009 | CN100459708C Method and device for inserting watermark into information signal |
| 02/03/2009 | US7487355 Data processing apparatus and method |
| 01/22/2009 | WO2009009871A1 Method of providing text representation of a cryptographic value |
| 01/22/2009 | CA2693234A1 Method of providing text representation of a cryptographic value |
| 01/13/2009 | US7478242 Increasing integrity of watermarks using robust features |
| 01/07/2009 | EP1364278A4 Apparatus, method and system for tracking information access |
| 01/06/2009 | CA2285027C Copy protection of data |
| 01/02/2009 | DE19881919B4 Verfahren und Vorrichtung zum Erstellen von Fingerabdrücken und zum Authentifizieren verschiedener magnetischer Medien Method and apparatus for creating and fingerprints to authenticate different magnetic media |
| 12/30/2008 | US7471806 Method, apparatus and computer program for inserting a watermarking program into an image processing program |
| 12/27/2008 | CA2593723A1 Multi-dimensional montgomery ladders for elliptic curves |
| 12/23/2008 | US7469342 Apparatus and methods for inserting and detecting electronic watermark |
| 12/17/2008 | EP2003634A2 Secret code medium |
| 12/16/2008 | US7466876 System and method for digital image encoding |
| 12/04/2008 | WO2008146332A1 Image encrypting device, image decrypting device, method and program |
| 12/04/2008 | WO2008002581A3 Multi-port memory device and method |
| 12/04/2008 | US20080298703 Hiding Codes in Input Data |
| 12/03/2008 | EP1998306A1 Image encryption/decryption system |
| 12/02/2008 | US7461255 Digital watermark processing apparatus, and digital contents distribution system using the apparatus |
| 11/25/2008 | US7457957 Apparatus and method for issuing and authenticating securities, etc. using digital watermarking |
| 11/20/2008 | US20080284565 Apparatus, System and Methods for Supporting an Authentication Process |
| 11/18/2008 | US7454628 Method and apparatus for transmitting content data and recording and/or reproducing apparatus |
| 11/13/2008 | US20080276817 Printed security mark |
| 11/13/2008 | DE102007021547A1 Method for optical coding of analog optical signal, involves modulating analog optical signal by change of signal parameter as function of secret modulation key function |
| 11/11/2008 | US7451317 Apparatus for and method of embedding watermark into original information, transmitting watermarked information, and reconstructing the watermark |
| 11/05/2008 | CN100431348C Watermark-based access control method and device |
| 11/04/2008 | US7447329 Apparatus and method for producing a document verifiable for its forgery or alteration, and apparatus and method for authenticating the document |
| 11/04/2008 | US7447312 Method and apparatus for secure ultrafast communication |
| 10/30/2008 | WO2008128528A2 Anti-tapping and manipulation encoding for online accounts |
| 10/30/2008 | US20080270881 System and method for embedding supplementary data into digital media files |
| 10/29/2008 | CN101296299A A system and method for determining whether a test object is an authentic object |
| 10/28/2008 | US7443999 Digital watermark embedding apparatus and method, and digital watermark analysis apparatus, method and program |
| 10/23/2008 | US20080263372 Method and apparatus for transmitting content data and recording and/or reproducing apparatus |
| 10/21/2008 | USRE40547 Software reproduction apparatus |
| 10/21/2008 | US7440143 Tampering judgement system, encrypting system for judgement of tampering and tampering judgement method |
| 10/09/2008 | DE102007015514A1 Übermittlungsverfahren Delivery Procedure |