| 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) |
|---|
| 01/12/2006 | US20060008309 Authentic document and method of making |
| 01/12/2006 | US20060008115 Authentic document and method of making |
| 01/04/2006 | CN1717640A Key synchronization in an image cryptographic systems |
| 01/03/2006 | US6983058 Method of embedding digital watermark, storage medium in which the method is stored, method of identifying embedded digital watermark, and apparatus for embedding digital watermark |
| 01/03/2006 | US6983057 Methods for embedding image, audio and video watermarks in digital data |
| 01/03/2006 | US6983051 Methods for audio watermarking and decoding |
| 01/03/2006 | US6983048 Multi-section decoding lens |
| 12/29/2005 | US20050289066 Audio fingerprinting |
| 12/29/2005 | US20050289065 Audio fingerprinting |
| 12/28/2005 | CN1714573A Watermark-based access control method and device |
| 12/28/2005 | CN1234230C Vulnerable watermark method for protecting electronic signet |
| 12/27/2005 | US6980668 Information processing apparatus enabling electronic watermarking, and communication network connectable to such information processing apparatus |
| 12/22/2005 | WO2005122114A1 Water marks injector |
| 12/20/2005 | US6978035 Information hiding system, method, and printed matter into which information is hidden |
| 12/14/2005 | CN1231875C Method for protecting audio data |
| 12/13/2005 | US6975760 Shared image generation apparatus and method, computer program, and computer readable storage medium |
| 12/13/2005 | US6975743 Robust and stealthy video watermarking into regions of successive frames |
| 12/08/2005 | WO2005116909A1 An apparatus, system and methods for supporting an authentication process |
| 12/08/2005 | US20050273491 Process of and system for seamlessly embedding executable program code into media file formats such as MP3 and the like for execution by digital media player and viewing systems |
| 12/08/2005 | DE102004022976A1 Steganographic printing and verification system uses transparent overlay with apparently random pattern placed on apparently random printed pattern to make picture or text visible |
| 12/07/2005 | EP1362474B1 Method and apparatus for detecting a watermark in an information signal |
| 12/06/2005 | US6973198 Authentic document and method of making |
| 12/06/2005 | US6973196 Authentic document and method of making |
| 12/06/2005 | US6973195 Method for embedding electronic watermark and method for decoding the same |
| 12/01/2005 | US20050268105 System and method of content copy control |
| 11/30/2005 | EP1472584B1 Secure data input dialogue using visual cryptography |
| 11/30/2005 | CN1702595A Information processing equipment, method and information utilizing system |
| 11/29/2005 | US6971024 Recording medium, data recording method and apparatus, data reproducing method and apparatus, and copying control method |
| 11/29/2005 | US6971011 Watermark detection |
| 11/29/2005 | US6971010 Image and video authentication system |
| 11/24/2005 | US20050262347 Watermark insertion apparatus and watermark extraction apparatus |
| 11/22/2005 | US6968455 Method of referring to digital watermark information embedded in a mark image |
| 11/22/2005 | US6968058 Digital evidential camera system for generating alteration detection data using built-in encryption key |
| 11/17/2005 | US20050257075 Data output method and apparatus, data playback method and apparatus, data recording method and apparatus, and data recording and playback method and apparatus |
| 11/17/2005 | US20050257060 Randomized signal transforms and their applications |
| 11/16/2005 | EP1596599A2 Randomized signal transforms and their applications |
| 11/16/2005 | CN1227899C Method and apparatus for embedding auxiliary data into signal |
| 11/16/2005 | CN1227622C Image processing method |
| 11/15/2005 | US6966002 Methods and apparatus for secure distribution of software |
| 11/15/2005 | US6965996 Method for facilitating legitimate use of digital content |
| 11/09/2005 | CN1694398A Randomized signal transforms and their applications |
| 11/08/2005 | US6963975 System and method for audio fingerprinting |
| 11/03/2005 | US20050246543 System and method of content copy control |
| 11/03/2005 | US20050244004 Information processing apparatus and method |
| 11/02/2005 | CN1691087A System and method for decoding digital coding image |
| 11/02/2005 | CN1225913C Method and arrangement for detecting multiple watermarks in information signal |
| 11/01/2005 | US6961853 Digital watermarks |
| 10/25/2005 | US6959386 Hiding encrypted messages in information carriers |
| 10/13/2005 | WO2005053374A3 Printed product |
| 10/11/2005 | US6954857 Method and apparatus for detecting data |
| 10/11/2005 | US6954856 Additional information embedding method, additional information detecting method, additional information embedding apparatus and additional information detecting apparatus |
| 10/11/2005 | US6954540 Image transmission device and storage medium with program for realizing its function, image display device and storage medium with program for realizing its function, and image transmission/reception system |
| 10/11/2005 | US6954532 Selective encryption of mixed raster content layers |
| 10/06/2005 | US20050219149 Device for reconstructing a graphical message |
| 10/05/2005 | EP1405251A4 Digital authentication with digital and analog documents |
| 09/28/2005 | EP1579674A2 Methods and apparatus for interactive network sharing of digital video content |
| 09/28/2005 | EP1579407A1 Methods and apparatus for interactive map-based analysis of digital video content |
| 09/22/2005 | US20050210257 System and method for protecting digital media |
| 09/22/2005 | US20050207325 Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method |
| 09/22/2005 | DE4416253B4 Verfahren zur datenschutzgerechten Verteilung von Schlüsselinformationen A method for privacy equitable distribution of key information |
| 09/21/2005 | EP1576567A1 Key synchronization in a visual cryptographic system |
| 09/20/2005 | US6947573 Watermarking an information signal |
| 09/20/2005 | US6947572 Image transmission system, method of the same, and recording medium |
| 09/20/2005 | US6947562 Electronic watermark detecting/inserting device |
| 09/14/2005 | EP0940037B1 Detecting a watermark embedded in an information signal |
| 09/13/2005 | US6944314 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 |
| 09/13/2005 | US6944313 Method and device for inserting and decoding a watermark in digital data |
| 09/09/2005 | CA2557516A1 Non-algorithmic vectored steganography |
| 09/06/2005 | US6940995 Method for embedding and extracting text into/from electronic documents |
| 09/01/2005 | US20050193206 Digital watermarking system using a cryptographic key |
| 08/31/2005 | EP1569063A2 Desynchronized fingerprinting method and system for digital multimedia data |
| 08/31/2005 | EP1567925A1 Key synchronization in an image cryptographic system |
| 08/31/2005 | CN1663276A Robust signature for signal authentication |
| 08/30/2005 | US6936334 Steganographically encoded media object having an invisible colorant |
| 08/24/2005 | CN1659608A Multi-section decoding lens |
| 08/24/2005 | CN1658555A Electronic watermark embedded device and method and electronic watermark pick up device and method |
| 08/23/2005 | US6934851 Method and apparatus for use of a time-dependent watermark for the purpose of copy protection |
| 08/23/2005 | US6934845 Method and system of reversibly marking a text document with a pattern of extra blanks for authentication |
| 08/23/2005 | CA2101673C Method and system for digital image signatures |
| 08/18/2005 | US20050180569 Tamper-resistant visual encryption method and device |
| 08/17/2005 | CN1656509A Tamper-resistant visual encryption method and device |
| 08/17/2005 | CN1655500A Desynchronized fingerprinting method and system for digital multimedia data |
| 08/17/2005 | CN1655269A Recording and reproducing system, recording apparatus and reproducing apparatus having copy protection function |
| 08/16/2005 | US6931541 Information processing apparatus and method |
| 08/16/2005 | US6931536 Enhanced copy protection of proprietary material employing multiple watermarks |
| 08/16/2005 | US6931156 Coding apparatus and method, decoding apparatus and method, data processing system, storage medium and signal |
| 08/11/2005 | US20050175224 Desynchronized fingerprinting method and system for digital multimedia data |
| 08/11/2005 | CA2491826A1 Desynchronized fingerprinting method and system for digital multimedia data |
| 08/10/2005 | EP1259961B1 System and method for protecting digital media |
| 08/10/2005 | EP1163117B1 Improved tamper-evident form |
| 08/09/2005 | US6928165 Communication system using digital watermark for synchronizing multiplexed text data to video frames |
| 08/04/2005 | US20050172130 Watermarking a digital object with a digital signature |
| 08/04/2005 | US20050172125 Information processing system, information processing apparatus, and computer-readable recording medium |
| 08/03/2005 | EP1055321B1 Secure distribution of digital representations |
| 08/02/2005 | US6925342 System and method for protecting digital media |
| 08/02/2005 | US6925192 Authenticatable image with an embedded image having a discernible physical characteristic with improved security feature |
| 07/27/2005 | CN1647140A Device for reconstructing a graphical message |
| 07/27/2005 | CN1647008A System and method for digital watermarking of data repository |
| 07/26/2005 | US6922777 Apparatus, computer medium, and method for embedding and extracting a first and second data into a watermark |
| 07/21/2005 | US20050157320 Recording medium, data recording method and apparatus, data regenerating method and apparatus, and copy control method |