| 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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| 12/27/2001 | WO2001099049A1 Watermark embedding method and arrangement |
| 12/27/2001 | WO2001098908A1 Watermark detector |
| 12/27/2001 | US20010056410 Electronic commerce system and method |
| 12/20/2001 | WO2001097128A1 System and method of providing and authenticating works of authorship based on watermark technique |
| 12/20/2001 | WO2001059705A3 Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections |
| 12/20/2001 | US20010054156 Image processing method and apparatus and image processing system |
| 12/20/2001 | US20010054146 Method and system of reversibly marking a text document with a pattern of extra blanks for authentication |
| 12/20/2001 | US20010054145 Digital information embedding device embedding digital watermark information in exact digital content, computer-readable recording medium having digital information embedding program recorded therein, and method of embedding digital information |
| 12/20/2001 | US20010053238 Digital watermark embedding method, digital watermark extracting method, recording medium, image recording device, and image replaying device |
| 12/20/2001 | US20010053237 Controlling a watermark strength embedded into a digital image |
| 12/20/2001 | US20010053236 Audio or video steganography |
| 12/20/2001 | US20010053234 Media commerce system employing watermarks |
| 12/19/2001 | EP1163117A1 Improved tamper-evident form |
| 12/19/2001 | CN1327673A Image and video authentication system |
| 12/19/2001 | CN1327591A Data recorded medium, data reproducing method and reproducing apparatus, and data processing system |
| 12/18/2001 | US6332194 Method for data preparation and watermark insertion |
| 12/12/2001 | CN2465263Y Foaming formed stamp |
| 12/11/2001 | US6330335 Audio steganography |
| 12/06/2001 | WO2001093267A1 Contents data, recording medium, recording method and device, reproducing method and device |
| 12/06/2001 | WO2001093264A1 Recording medium, recording method of recording medium, recording and/or reproducing method of recording medium, and data copy control method |
| 12/05/2001 | CN1325577A Watermarking of digital images using wavelet and discrete cosine tranforms |
| 12/05/2001 | CN1325093A Prepn. of color invisible graph regression anti-fake product |
| 11/29/2001 | WO2001091052A2 Contents forming method and contents reproducing apparatus and method |
| 11/29/2001 | WO2001091007A1 System and method for production and authentication of original documents |
| 11/29/2001 | WO2000070523A8 Methods and systems employing digital watermarking in music and other media |
| 11/29/2001 | CA2410089A1 System and method for production and authentication of original documents |
| 11/28/2001 | EP1157499A1 Signal processing methods, devices, and applications for digital rights management |
| 11/28/2001 | EP1125189A4 Methods of digital steganography for multimedia data |
| 11/28/2001 | CN1324541A Method for embedding electronic watermark and method for decoding the same |
| 11/28/2001 | CN1324058A information processing method |
| 11/22/2001 | US20010044744 Internet media commerce system |
| 11/22/2001 | US20010043343 Image processing and method, and storage medium |
| 11/22/2001 | DE10023759A1 Digital watermark inclusion method in musical note score printing, involves altering geometric elements of note score only in digital form without reducing legibility of note score |
| 11/21/2001 | EP1156662A1 Method for embedding electronic watermark, decoding method, and devices for the same |
| 11/21/2001 | EP0935872B1 Watermarking an information signal |
| 11/21/2001 | CN2461103Y Full fingerprint read-in device |
| 11/21/2001 | CN1323490A Use of a watermark for the purpose of copy protection |
| 11/21/2001 | CN1323022A Product anti-fake method with naturally hidden identification cipher destructed after being used |
| 11/15/2001 | US20010040980 Information processing method |
| 11/15/2001 | US20010040978 Verification data encoding method, original image verification method and apparatus, and computer readable medium |
| 11/14/2001 | EP1154648A1 Information detecting apparatus |
| 11/13/2001 | US6317505 Image marking with error correction |
| 11/08/2001 | WO2001084825A1 Method and device for controlling multimedia data watermark |
| 11/08/2001 | WO2001084283A2 Network enabled application software system and method |
| 11/08/2001 | US20010038898 Security protection double paper for facsimile reception |
| 11/07/2001 | EP1152412A1 Recording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method |
| 11/06/2001 | US6314409 System for controlling access and distribution of digital property |
| 11/06/2001 | US6314188 Motion picture data encrypting method and computer system and motion picture data encoding/decoding apparatus to which encrypting method is applied |
| 11/01/2001 | US20010037455 Authentication using a digital watermark |
| 11/01/2001 | US20010037307 Signal transmission apparatus and signal transmission method |
| 10/31/2001 | EP1150492A2 Electronic watermark embedding and detecting device and method |
| 10/30/2001 | US6310962 MPEG2 moving picture encoding/decoding system |
| 10/24/2001 | EP1148708A1 Method for embedding electronic watermark, recorded medium on which the method is recorded, method for proving embedded electronic watermark, and device for embedding electronic watermark |
| 10/24/2001 | EP1148704A2 Apparatus and methods for inserting and detecting electronic watermark |
| 10/24/2001 | EP1148429A1 Method of referring to digital watermark information embedded in a mark image |
| 10/23/2001 | US6307950 Methods and systems for embedding data in images |
| 10/18/2001 | WO2001078386A2 Data scrambling and descrambling system |
| 10/18/2001 | US20010032186 Image processing apparatus, image processing method, electronic commerce system, electronic commerce method and a computer program product |
| 10/18/2001 | US20010031340 Thermally fusible substance and non-transferable binder; clarity |
| 10/18/2001 | CA2405262A1 System for scrambling content, and system for descrambling scrambled content |
| 10/17/2001 | CN1317774A Enciphering method of photoelectric information |
| 10/11/2001 | WO2001076253A1 Watermarked material processing |
| 10/11/2001 | WO2001075876A1 Device for reading, recording and restoring digital data in a copy-protection system for said data |
| 10/11/2001 | WO2001075821A1 Method for protecting an electronic chip against fraud |
| 10/11/2001 | WO2001075794A2 Identifying material |
| 10/11/2001 | WO2001075782A1 Individual body identifying method by two-dimensional code, hybrid individual person authenticating system, and off-line person identifying system |
| 10/11/2001 | US20010028728 Electronic watermark embedding device and electronic watermark detecting device, and electronic watermark embedding method and electronic watermark detecting method implemented therein |
| 10/11/2001 | US20010028715 Apparatus and methods for inserting and detecting electronic watermark |
| 10/10/2001 | EP1142298A1 Image and video authentication system |
| 10/10/2001 | EP1142190A1 Counterfeit deterrence system |
| 10/09/2001 | US6301663 Copy protection apparatus and information recording medium used in this copy protection apparatus |
| 10/09/2001 | US6301360 Method of encoding information using a position-based encoding scheme |
| 10/04/2001 | US20010026616 Electronic watermark data insertion apparatus and electronic watermark data detection apparatus |
| 10/04/2001 | US20010026248 Method and apparatus for providing visual display security |
| 10/04/2001 | EP1139650A1 Method for embedding electronic watermark and method for decoding the same |
| 10/04/2001 | EP1139244A2 Method and system for selling data |
| 09/30/2001 | CA2317141A1 Method and system for selling data |
| 09/27/2001 | US20010025341 Digital watermarks |
| 09/26/2001 | EP1137250A1 Improvements relating to digital watermarks |
| 09/26/2001 | EP1136947A2 Information processing method |
| 09/26/2001 | EP1136946A2 Electronic watermark data insertion apparatus and electronic watermark data detection apparatus |
| 09/26/2001 | EP0846146B1 Colorant stabilizing composition |
| 09/26/2001 | CN1314668A Time-space coding method and relative product |
| 09/26/2001 | CN1314270A Method for wireless coding and decoding by using automobile license plate number |
| 09/19/2001 | CN1313578A Print method of holographic image or words |
| 09/13/2001 | WO2001067741A1 Method for transmitting data with digital watermark access control and devices therefor |
| 09/13/2001 | WO2001067740A1 Method of integrating a watermark into a compressed image |
| 09/13/2001 | WO2001067667A1 Method and system to uniquely associate multicast content with each of multiple recipients |
| 09/13/2001 | US20010021978 Method of referring to digital watermark information embedded in a mark image |
| 09/13/2001 | US20010021926 System for controlling access and distribution of digital property |
| 09/13/2001 | US20010021260 MPEG2 moving picture encoding/decoding system |
| 09/12/2001 | EP1132895A2 Watermarking generation method for audio signals |
| 09/12/2001 | EP1132119A2 Method for concealing information and document for securely communicating concealed information |
| 09/12/2001 | CN1312532A Nanometer anti-fake mark making process and equipment |
| 09/12/2001 | CN1312531A Safety anti-fake holographical picture on thin paper |
| 09/12/2001 | CN1312530A Safety anti-fake holographical picture on paper |
| 09/11/2001 | US6289108 Methods for detecting alteration of audio and images |
| 09/07/2001 | CA2332080A1 Secure holographic images on tissue |
| 09/06/2001 | US20010019659 Data processing apparatus, data processing method, data reading apparatus, and recording apparatus |
| 09/05/2001 | EP1130924A2 Electronic watermark detecting/inserting device |