Matches 1 - 22 out of 22


Match Document Document Title
US20150063567 METHOD FOR WATERMARKING A CONTENT  
A method for preparing a content for watermarking is disclosed, wherein the content is available in different versions on a server for at least a client and wherein the different versions of the...
US20060227968 Speech watermark system  
A time-dependent watermark system is provided for information integrity identification and tampering detection and damaged area reconstruction for digitally recorded speech that can be used as...
US20140064485 METHOD FOR REAL-TIME COMPOSITING OF ENCRYPTED VIDEO STREAMS WITHOUT DECRYPTION  
A system, method and device for real-time compositing of encrypted video streams without having to decrypt each video stream is disclosed herein. A shared encryption key is derived to encrypt...
US20100040228 PERSONALIZED MARKING FOR PROTECTING DIGITAL AUDIOVISUAL STREAMS  
A process for distributing a video stream to a multitude of destinations including marking by adding to the video stream at least a visual element such that the marking is applied to an original...
US20140177834 METHOD TO ENFORCE WATERMARKING INSTRUCTIONS IN A RECEIVING DEVICE  
A method to enforce watermarking instructions by a security module in a receiving device, comprising the steps of receiving a security message by—a security module, comprising at least a content...
US20140098954 DIGITAL VIDEO PROTECTION FOR AUTHENTICITY VERIFICATION  
A method for verifying the authenticity and integrity of an ordered sequence of digital video frames, without having access to the original recording, by embedding therein a respective series of...
US20070201694 PRIVACY MANAGEMENT IN IMAGING SYSTEM  
The system and method obscures descriptive image information about one or more images. The system comprises a selector for selecting the descriptive image information from one or more of the...
US20090208008 DIGITAL WATERMARKING WITH SPATIOTEMPORAL MASKING  
Visually imperceptible distortion, from watermarking or compression, desired for embedding into frames of a video sequence is computed. Within each spatiotemporal region of the frames, points are...
US20120027207 COMPOSITE MASKING SYSTEM AND METHOD FOR IMPROVING INVISIBILITY OF HIGH-DEFINITION VIDEO WATERMARKING  
A composite masking system and method for improving the invisibility of high-definition video watermarking. The composite masking system includes a watermark generation module, a mask generation...
US20060269056 Messaging interface for protected digital outputs  
An apparatus and method for determining and displaying status messages relating to protected digital content control information conveyed between a transmitting device, and a receiving device...
US20050144454 Video/image communication with watermarking  
A video communication unit (405, 450) comprising a video input (415) for receiving a video signal transmission having a number of video or image frames, wherein each video or image frame includes...
US20060256963 Key masking for cryptographic processes  
Countermeasures for differential power or electromagnetic analysis attacks are provided with the definition and use of key encryption masks and masked substitution tables in a cryptographic...
US20100208891 METHOD AND SYSTEM FOR THE SECURE DISTRIBUTION OF AUDIOVISUAL DATA BY TRANSACTIONAL MARKING  
A process for distributing a marked audiovisual sequence from a nominal audiovisual sequence towards a receiver, said nominal audiovisual sequence having a nominal content, comprising: generating...
US20090147952 SYSTEM AND METHOD FOR THE DISPLAY OF SCREEN APPARATUS CONTENT OVERLAYED ON PROTECTED CONTENT  
A system and method for the display of screen apparatus content overlayed on protected content is described. An embodiment of a system may include a device connected to a network. The device...
US20120076296 METHOD AND APPARATUS FOR A HIGH BANDWIDTH STREAM CIPHER  
A method and apparatus for a high-bandwidth stream cipher. In one embodiment of the invention, the stream cipher has an output function that receives secret state bits from a block cipher and...
US20080137851 Native Scrambling System  
A system for scrambling/descrambling packets of a stream of content, each packet having a must stay clear (MSC) section, the system including an input handler including a receiving module to...
US20060115082 Authentication system with visual encryption using polarisation of light  
An authentication system 600 includes optical authentication devices 620, 630, 640. Each optical authentication device includes an optical layer 622, 632, 642. The optical layer includes a...
US20120002809 Video Slice and Active Region Based Multiple Partial Encryption  
A television set-top box has a receiver receiving a digital television signal comprising: a plurality of unencrypted packets and a plurality of encrypted packets, where the encrypted packets carry...
US20080205643 Method and Apparatus for Distribution and Synchronization of Cryptographic Context Information  
Method and apparatus for distribution and synchronization of cryptographic context information is described. An aspect of the invention relates to synchronizing an encryptor and key management...
US20050141710 Video display  
A personal computer monitor comprises a liquid crystal display panel and a liquid crystal barrier. A first image and a second image are respectively drawn on a vertical line and a vertical line in...
US20140369500 Utilizing data reduction in steganographic and cryptographic systems  
The present invention relates to methods for protecting a data signal using the following techniques: applying a data reduction technique to reduce the data signal into a reduced data signal;...
US20110228932 DATA TRANSMISSION CIRCUIT  
A data transmission circuit analyzes video data and a pixel clock input from a video/audio signal processor, and determines whether the signals are valid or not. If a signal is invalid, the data...

Matches 1 - 22 out of 22