| 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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| 10/16/2003 | WO2003085632A2 Device for reconstructing a graphical message |
| 10/16/2003 | WO2003085536A1 Method for protecting work content in electronic work distribution |
| 10/16/2003 | WO2003030542A3 Encoding and encrypting devices for secure scalable data streaming |
| 10/16/2003 | US20030196086 Information processing apparatus, information processing system, information processing method, storage medium and program |
| 10/16/2003 | US20030195856 Copy protection of data |
| 10/16/2003 | US20030194109 Method of integrating a watermark into a compressed image |
| 10/16/2003 | US20030194108 Watermarking an information signal |
| 10/15/2003 | CN1124567C Method and apparatus for encoding image information into puzzle-type |
| 10/14/2003 | US6633652 Method of inserting a watermark and authenticating a digital signal |
| 10/09/2003 | US20030191941 Data transmitting apparatus, contents distribution apparatus, contents distribution system, digital contents distribution method and data storage apparatus |
| 10/09/2003 | US20030190043 Protection of software against use without permit |
| 10/09/2003 | US20030189731 Print user interface system and its applications |
| 10/08/2003 | EP1351246A2 System and method for copy protection for digital signals |
| 10/08/2003 | EP1351245A2 System and method for copy protection for digital signals |
| 10/08/2003 | EP1351244A2 System and method for copy protection for digital signals |
| 10/02/2003 | WO2003081896A1 Watermaking a digital object with a digital signature |
| 10/02/2003 | WO2003081438A1 Information image utilization system, information image management server, information image management method, device information image, program, and recording medium |
| 10/02/2003 | WO2003081437A1 Information image utilization system, information image management device, information image management method, content information image, program, and recording medium |
| 10/02/2003 | US20030188150 System and method for media authentication |
| 10/01/2003 | CN1123221C Marking video and/or audio signal |
| 09/30/2003 | US6628801 Image marking with pixel modification |
| 09/25/2003 | US20030179413 Identification card watermarking |
| 09/25/2003 | US20030179364 Micro-optics for article identification |
| 09/24/2003 | CN1444145A Digital bar code watermark and antifalse method |
| 09/23/2003 | US6624874 Apparatus and method for inserting an updateable hidden image into an optical path |
| 09/17/2003 | EP1345193A2 Anti-counterfeiting decoding method and apparatus |
| 09/17/2003 | CN2574151Y Conveing film band for covering secret information and card with same |
| 09/16/2003 | US6621933 MPEG2 moving picture encoding/decoding system |
| 09/11/2003 | US20030172034 System for controlling access and distribution of digital property |
| 09/11/2003 | US20030169456 Tampering judgement system, encrypting system for judgement of tampering and tampering judgement method |
| 09/10/2003 | CN1441935A System and method for reproduction and authentication of original documents |
| 09/10/2003 | CN1121019C Method of verifying integrity of data stored on processing facility used for processing sheet-like articles |
| 09/03/2003 | EP1340200A1 Product verification system |
| 09/02/2003 | US6614915 Image capture and marking |
| 08/28/2003 | US20030163430 Contents forming method and contents reproducing apparatus and method |
| 08/28/2003 | US20030163428 System for controlling access and distribution of digital property |
| 08/28/2003 | US20030161550 Enhanced Method for digital data hiding |
| 08/28/2003 | US20030161498 Digital watermark inserting system and digital watermark characteristic parameter table generating method |
| 08/28/2003 | US20030161475 Encryption of digitized physical information based on physical tags |
| 08/28/2003 | US20030161470 Apparatus and method for controlling the copy and play of a digital audio contents |
| 08/26/2003 | US6611599 Watermarking of digital object |
| 08/26/2003 | US6610386 Transferable support for applying data to an object |
| 08/21/2003 | US20030159046 Apparatus and method for issuing and authenticating securities, etc. using digital watermarking |
| 08/21/2003 | US20030159039 Method of protecting an electronic chip against fraud |
| 08/21/2003 | US20030156735 Method and arrangement for detecting multiple watermarks in an information signal |
| 08/20/2003 | EP1336161A1 Method and arrangement for embedding a watermark in an information signal |
| 08/19/2003 | US6608912 Method of integrating a watermark into a compressed image |
| 08/14/2003 | US20030154379 Watermark data embedding apparatus and extracting apparatus |
| 08/14/2003 | US20030154378 Data application method |
| 08/07/2003 | WO2003065723A2 Watermark-based access control method and device |
| 08/07/2003 | US20030149890 Content distribution/protecting method and apparatus |
| 08/07/2003 | US20030147549 Apparatus and method for producing a document verifiable for its forgery or alteration, and apparatus and method for authenticating the document |
| 08/07/2003 | US20030145497 Display of symmetrical patterns with encoded information |
| 08/06/2003 | EP1333658A2 Apparatus and method for producing a watermarked document and for authenticating the same |
| 08/05/2003 | US6603864 Image processing apparatus and image processing method |
| 08/05/2003 | US6603576 Method and apparatus for superimposing additional information with image signal |
| 07/31/2003 | WO2003062900A1 Light control material for displaying color, information, and images |
| 07/31/2003 | WO2003061983A1 Micro-optics for article identification |
| 07/30/2003 | EP1330784A2 Contents forming method and contents reproducing apparatus and method |
| 07/30/2003 | CN1432977A Card forming method capable of producing anti-fake mark |
| 07/30/2003 | CN1116663C Cipher anti-fake method for products |
| 07/29/2003 | US6601046 Usage dependent ticket to protect copy-protected material |
| 07/29/2003 | US6600828 Image processing method and apparatus, and storage medium therefor |
| 07/29/2003 | US6600823 Apparatus and method for enhancing check security |
| 07/24/2003 | WO2003060674A1 Secure data input dialogue using visual cryptography |
| 07/24/2003 | US20030138126 Image attribute altering device and electronic watermark embedding device |
| 07/23/2003 | CN2562280Y Anti-secret leakage automatic induction separator |
| 07/17/2003 | US20030133591 Encoder and encoding method for electronic watermark, decoder and decoding method for electronic watermark, encoding and decoding program for electronic watermark, and recording medium for recording such program |
| 07/16/2003 | EP1327954A2 Systems and methods for distributed administration of public and private electronic markets |
| 07/16/2003 | EP1327201A1 System and method for hashing digital images |
| 07/16/2003 | CN2561038Y Anti-theft cipher-code input device for finance |
| 07/16/2003 | CN1430411A Image generation equipment and verification data generating method |
| 07/16/2003 | CN1114868C Embedded information detecting method and system |
| 07/10/2003 | US20030131242 Data processing apparatus and method |
| 07/10/2003 | US20030130952 Systems and methods for distributed administration of public and private electronic markets |
| 07/09/2003 | EP1326424A2 Image generating apparatus and verification data generation method |
| 07/09/2003 | EP1326423A1 Apparatus and method for inserting an updateable hidden image into an optical path |
| 07/09/2003 | EP1157499A4 Signal processing methods, devices, and applications for digital rights management |
| 07/09/2003 | EP1048168B1 Anti-counterfeiting method and apparatus using digital screening |
| 07/09/2003 | CN1114141C Computer with encrytion function |
| 07/08/2003 | US6591415 Polymorphic code generation method and system therefor |
| 07/08/2003 | US6591009 Information embedding method, apparatus and recording medium |
| 07/08/2003 | US6590997 Files and methods employing common information in both header and steganographic embedding |
| 07/08/2003 | US6590995 Method of inserting manipulation-proof digital fingerprints into electronic documents |
| 07/03/2003 | WO2003055222A2 Increasing integrity of watermarks using robust features |
| 07/03/2003 | WO2003054835A2 Computer-assisted method for the computerisation, recovery and management of thought-produced elements |
| 07/03/2003 | US20030126455 Content data transmitting device and method, and recording/reproducing device |
| 07/03/2003 | US20030126444 Image verification system |
| 07/03/2003 | US20030123699 Image generating apparatus and verification data generation method |
| 07/03/2003 | US20030123661 Apparatus for and method of embedding watermark into original information, transmitting watermarked information, and reconstructing the watermark |
| 07/03/2003 | US20030123658 Data processing apparatus and method |
| 07/02/2003 | EP1324264A2 Data processing apparatus and method |
| 07/02/2003 | EP1324263A2 Data processing apparatus and method |
| 07/02/2003 | CN1113527C Method for inserting and extracting digital watermark |
| 07/01/2003 | US6587821 Methods for decoding watermark data from audio, and controlling audio devices in accordance therewith |
| 06/26/2003 | US20030120926 Data encryption method, recording medium, data transfer apparatus, and encrypted data decryption method |
| 06/26/2003 | US20030117584 Apparatus and method for inserting an updateable hidden image into an optical path |
| 06/26/2003 | US20030116627 Method for integrating hidden information in a set of notes |
| 06/26/2003 | CA2413572A1 Display of symmetrical patterns with encoded information |
| 06/25/2003 | CN1426656A Method and device for controlling multimedia data watermark |