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Cryptography > Video Cryptography > Video Electric Signal Modification (e.g., Scrambling) > Image Data Converted To Digital Before Modification Image Data Converted To Digital Before ModificationImage Data Converted To Digital Before Modification patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070269046 - Receiver device for star pattern partial encryption A television signal receiver device consistent with certain embodiments has a receiver that receives a digital television signal including a plurality of unencrypted packets, and a plurality of encrypted packets, wherein the encrypted packets are of at least one selected packet type. The at least one selected packet type has ... 10/19/06 - 20060233369 - A partial dual encrypted stream utilizing program map tables The present invention is suitable for use in a partial dual encrypted system. The present invention allows for two different decryption devices (e.g., an incumbent, or first, set-top and an overlay, or second, set-top) to be located in a single system having an incumbent encryption scheme and a second encryption ... 07/13/06 - 20060153379 - Partial encryption and pid mapping A method consistent with certain embodiments carried out at a television provider headend involves receiving a feed of scrambled television content in the form of a stream of packets; descrambling the scrambled television content to produce a stream of clear packets; selecting a packet for multiple encryption; duplicating the packet ... 06/08/06 - 20060120524 - Method for secure object detection in images A method processes an input image securely. An input image I is acquired in a client. A set of m random images, H1, . . . , Hm, and a coefficient vector, a=[a1, . . . , am], are generated such that the input image I is I=Σi=1mαi Hj. The ... 06/01/06 - 20060115083 - Partial encryption and pid mapping A method of selecting data for multiple carriage partial encryption consistent with certain embodiments involves examining unencrypted packets of data in a digital audio/video data stream to identify a packet type; and selecting packets of the identified packet type for multiple partial encryption, wherein the amount of data to be ... 06/01/06 - 20060115082 - 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 representation of a first image visually encrypted under control of an encryption key. The encrypted first image uniquely identifies the respective authentication device. ... 08/04/05 - 20050169471 - Method for cryptographic conversion of binary data blocks The present invention pertains to the fields of electrical communications and computer techniques and more precisely relates to cryptographic methods and devices for the ciphering of digital data. This method comprises splitting a data block into N≧2 sub-blocks and sequentially converting said sub-blocks by applying at least one conversion operation ... 08/04/05 - 20050169470 - Encryption device and decryption device An apparatus for enciphering data by which enciphered digital information data with improved cipher strength are obtained by subjecting digital information data to enciphered process responding to random number data or pseudo-random number data produced in accordance with key data, and which comprises an enciphering portion 40 for subjecting an ... 07/14/05 - 20050152548 - Conditional access overlay partial encryption using mpeg transport continuity counter A conditional access overlay system utilizing partial encryption without requiring additional program identifiers. The conditional access overlay system generates duplicate critical packets for separate encryption that are sent using the same packet identifier. The rest of the content stream is sent in the clear. However, these duplicated packets are sent ... ### FreshPatents.com Support |