| 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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| 08/09/2006 | CN1269342C Method and device for uniting digital water print based on singular value analysis and spread spectrum technique |
| 08/09/2006 | CN1269126C Data processor and data recorded medium |
| 08/08/2006 | US7089422 Embedding data in an information signal |
| 08/08/2006 | US7089420 Authentication method and system |
| 08/02/2006 | EP1236181B1 Secure photo carrying identification device, as well as means and method for authenticating such an identification device |
| 08/01/2006 | US7085474 Watermark detecting apparatus |
| 08/01/2006 | US7085397 Unfair contents appropriation detection system, computer program and storage medium |
| 07/27/2006 | US20060168452 Watermarked material processing |
| 07/26/2006 | CN1266699C Data reproducing device and method, data recording device and method, circuit element |
| 07/25/2006 | US7082572 Methods and apparatus for interactive map-based analysis of digital video content |
| 07/25/2006 | US7082414 Image encrypting method and device, image decrypting method and device, and recording medium |
| 07/19/2006 | CN1265630C Stream recording/reproducing apparatus and stream recording/reproducing method |
| 07/18/2006 | US7080253 Audio fingerprinting |
| 07/18/2006 | US7080041 System and method for production and authentication of original documents |
| 07/18/2006 | US7079649 Copy protection of data |
| 07/13/2006 | US20060155649 Information signal reproducing apparatus, information signal outputting apparatus, information signal reproducing method, and information signal outputting method |
| 07/13/2006 | US20060153424 Image processing apparatus and method, program code and storage medium |
| 07/13/2006 | US20060153421 Wm signal generation device, wm signal generation method, computer-executable program for executing wm signal generation method and computer readable recording medium on which the program is recorded, digital watermarking device, and digital tv set including the digital watermarking device |
| 07/12/2006 | CN1801249A Multi-unit multiple encryption magnetic digital counterfeit deterrence method |
| 07/11/2006 | US7076659 Enhanced method for digital data hiding |
| 07/11/2006 | US7075571 Digital camera, and system for detecting falsification of an image |
| 07/05/2006 | CN2793857Y Digital lock coding device of CNC tool device |
| 07/04/2006 | US7073065 Watermarked material processing |
| 07/04/2006 | US7072493 Robust and stealthy video watermarking into regions of successive frames |
| 07/04/2006 | US7072489 Print control method using electronic watermark information |
| 07/04/2006 | US7072260 Data recording medium, data reproducing method and reproducing device, and data processing system |
| 06/29/2006 | US20060140403 Multiple transform utilization and application for secure digital watermarking |
| 06/27/2006 | US7068812 Decoding hidden data from imagery |
| 06/27/2006 | US7068811 Protecting images with image markings |
| 06/27/2006 | US7068810 Methods and apparatus for embedding data and for detecting and recovering embedded data |
| 06/22/2006 | US20060133646 Video steganography |
| 06/21/2006 | EP1423764B1 Copy protection via multiple tests |
| 06/21/2006 | CN1792088A Printed document falsification detection device and falsification detection method |
| 06/20/2006 | US7065227 Data processing apparatus, image processing apparatus, and method therefor |
| 06/13/2006 | US7062070 Image marking adapted to the image |
| 06/07/2006 | EP1476782A4 Light control material for displaying color, information, and images |
| 06/07/2006 | EP1052612B1 Watermark applied to one-dimensional data |
| 06/06/2006 | US7058979 Method for inserting a watermark into an image |
| 06/06/2006 | US7058570 Computer-implemented method and apparatus for audio data hiding |
| 06/06/2006 | US7058196 Apparatus and method for processing image and computer-readable storage medium |
| 05/30/2006 | CA2224317C Procedure for marking binary coded data sets |
| 05/25/2006 | US20060109984 Methods for audio watermarking and decoding |
| 05/24/2006 | EP1371164A4 Theft resistant graphics |
| 05/23/2006 | US7051207 Apparatus and methods for inserting and detecting electronic watermark |
| 05/23/2006 | US7050588 System for processing an information signal |
| 05/16/2006 | US7046818 Standards compliant watermarking for access management |
| 05/16/2006 | US7046807 Data administration method |
| 05/16/2006 | US7046804 System for producing a printable security device image and detecting latent source image(s) therefrom |
| 05/16/2006 | US7046607 Multimedia copy control system and method using digital data recording medium and optical disc reproducing apparatus |
| 05/11/2006 | WO2005060590A3 System and method for embedding and extracting key information |
| 05/10/2006 | CN1255707C Copy protection via multiple tests |
| 05/09/2006 | US7043047 Digital image processing apparatus |
| 05/02/2006 | US7039189 Stream continuity enforcement |
| 05/02/2006 | US7036736 Event entry and advertising medium |
| 04/26/2006 | EP1476317A4 Micro-optics for article identification |
| 04/26/2006 | CN1254080C Image processing equipment |
| 04/19/2006 | CN1252623C Data processing method for application with photo and its system |
| 04/18/2006 | US7032113 Network enabled application software system and method |
| 04/18/2006 | US7031942 Information signal reproducing apparatus, information signal outputting apparatus, information signal reproducing method, and information signal outputting method |
| 04/18/2006 | US7031493 Method for generating and detecting marks |
| 04/13/2006 | US20060080556 Hiding and detecting messages in media signals |
| 04/12/2006 | EP1645437A2 Printed product and method for the production thereof |
| 04/11/2006 | US7028189 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 04/11/2006 | US7028188 Document authentication using the physical characteristics of underlying physical media |
| 04/11/2006 | US7027611 Controlling a watermark strength embedded into a digital image |
| 04/05/2006 | CN1249713C Device for reading, recording and restoring digital data in a copy-protection system for said data |
| 04/04/2006 | US7024558 Apparatus and method for authenticating digital signatures and computer-readable recording medium thereof |
| 03/30/2006 | US20060069919 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/29/2006 | CN1754194A Methods and apparatus for interactive map-based analysis of digital video content |
| 03/29/2006 | CN1754139A Methods and apparatus for interactive network sharing of digital video content |
| 03/28/2006 | US7020777 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/28/2006 | US7020775 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/21/2006 | US7017045 Multimedia watermarking system and method |
| 03/16/2006 | US20060059356 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/16/2006 | US20060059354 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/16/2006 | US20060059353 Derivation and quantization of robust non-local characteristics for blind watermarking |
| 03/16/2006 | US20060059349 Robust signature for signal authentication |
| 03/14/2006 | US7013078 Data processing apparatus, data processing method, data reading apparatus, and recording apparatus |
| 03/09/2006 | US20060048633 Method and system for synthesizing electronic transparent audio |
| 03/07/2006 | US7010123 Invisible graphics context identifying system and fabrication method thereof |
| 02/28/2006 | US7006660 Data processing apparatus and method, data processing program, and storage medium |
| 02/28/2006 | US7006655 Methods, apparatus and systems for an electronic watermark having resistance to scaling |
| 02/28/2006 | US7006294 Micro-optics for article identification |
| 02/22/2006 | CN1739295A Increasing integrity of watermarks using robust features |
| 02/15/2006 | EP1626565A1 Printed document falsification detection device and falsification detection method |
| 02/15/2006 | EP1625020A2 Method and apparatus for providing embossed hidden images |
| 02/15/2006 | CN1242615C Digital watermarking system and method for multimedia data |
| 02/08/2006 | CN1241389C Object-oriented self-synchronizing water mark detecting method for multimedia product |
| 02/08/2006 | CN1241083C Network enabled application software system and method |
| 02/07/2006 | US6996543 System for protection of goods against counterfeiting |
| 02/07/2006 | US6996250 Digital watermark embedding processor, digital watermark detecting processor, digital watermark embedding-processing method, digital watermark detecting-processing method, and program storage medium and program used therewith |
| 02/02/2006 | US20060026428 Key synchronization in an image cryptographic systems |
| 02/02/2006 | US20060023879 Object identifying medium using multi-layer thin-film |
| 02/01/2006 | CN1729495A Key synchronization in a visual cryptographic system |
| 02/01/2006 | CN1240215C Method for controlling digital data and its device |
| 01/26/2006 | US20060020809 Data processing apparatus and method, data processing program, and storage medium |
| 01/25/2006 | EP1619682A2 Recording and reproducing data with electronic watermark information |
| 01/18/2006 | EP1617643A2 Information processing apparatus, method and memory medium therefor |
| 01/18/2006 | CN1237484C Method and arrangement for embedding watermark in information signal |
| 01/17/2006 | US6987862 Video steganography |