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Class Information
Number: 380/239
Name: Cryptography > Video cryptography > Video electric signal modification (e.g., scrambling) > Encrypted code control signal
Description: Subject matter wherein a control coding signal modifying the video electric signal has itself been made unintelligible.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8666072 Method and a system for receiving a multimedia signal, a cryptograophic entity for said reception method and system, and a method and a black box for producing said cryptographic entity Mar. 4, 2014
8646097 Security module for audio/video data processing unit Feb. 4, 2014
8638934 Method and apparatus for secure key delivery for decrypting bulk digital content files at an unsecure site Jan. 28, 2014
8640249 Digital broadcasting conditional access system and method Jan. 28, 2014
8634552 System and method for using a streaming protocol Jan. 21, 2014
8625792 Methods and apparatus to reduce channel switching time Jan. 7, 2014
8627350 Systems and method for determining visual media information Jan. 7, 2014
8621540 Apparatus and methods for provisioning in a download-enabled system Dec. 31, 2013
8612752 Communicating a packet from a mesh-enabled access point to a mesh portal in a multi-hop mesh network Dec. 17, 2013
8605097 Method and system for determining the compliance encrypted and non-encrypted display outputs Dec. 10, 2013
8595854 Processing recordable content in a stream Nov. 26, 2013
8582763 Method and apparatus for decoding broadband data Nov. 12, 2013
RE44594 Method and circuit for data encryption/decryption Nov. 12, 2013
8577033 Method for partially encrypting program data Nov. 5, 2013
8572390 Method for transmitting and receiving data, in particular for secure exchanges between an aircraft and a ground base, related devices and aircraft equipped with such devices Oct. 29, 2013
8548166 Method for partially encrypting program data Oct. 1, 2013
8548167 System for traceable decryption of bandwidth-efficient broadcast of encrypted messages and security module revocation method used for securing broadcasted messages Oct. 1, 2013
8548168 Security module for securing an encrypted signal with system and method for use therewith Oct. 1, 2013
8549307 Forensic marking using a common customization function Oct. 1, 2013
8542830 Method for partially encrypting program data Sep. 24, 2013
8533849 Traitor tracing in a content protection system Sep. 10, 2013
8532294 Just in time delivery of entitlement control messages (ECMs) and other essential data elements for television programming Sep. 10, 2013
8532293 Method and system for securely providing and storing content in a multiple dwelling unit system Sep. 10, 2013
8526612 Selective and persistent application level encryption for video provided to a client Sep. 3, 2013
8527426 Using smartcards to enable probabilistic transactions on an untrusted device Sep. 3, 2013
8520850 Downloadable security and protection methods and apparatus Aug. 27, 2013
8509435 Method and system for a transport single key change point for all package identifier channels Aug. 13, 2013
8510792 Gated network service Aug. 13, 2013
8494160 Method and apparatus for decrypting encrypted content Jul. 23, 2013
8489884 Methods and apparatus for generating signatures Jul. 16, 2013
8472624 Generating a scrambled data stream Jun. 25, 2013
8428256 Method and apparatus for efficiently fixing transformed part of content Apr. 23, 2013
RE44121 Copy prevention method and apparatus of a digital recording/reproducing system Apr. 2, 2013
8406425 Method and apparatus for minimizing co-channel interference Mar. 26, 2013
RE44106 Copy prevention method and apparatus of a digital recording/reproducing system Mar. 26, 2013
8401191 Efficient broadcast entitlement management message delivery mechanism using a scheduled delivery window Mar. 19, 2013
8401190 Portable security module pairing Mar. 19, 2013
8401189 Opportunistic use of keys during encryption/decryption Mar. 19, 2013
8401187 Processing recordable content in a stream Mar. 19, 2013
8401186 Cloud storage data access method, apparatus and system based on OTP Mar. 19, 2013
8396217 Broadcast receiving apparatus and channel changing method thereof Mar. 12, 2013
RE44068 Method and apparatus for descrambling digital video data and digital audio data using control data Mar. 12, 2013
8385545 Secure content key distribution using multiple distinct methods Feb. 26, 2013
8385546 System and method for storing and accessing digital media content using smart card technology Feb. 26, 2013
8379854 Secure wireless communication Feb. 19, 2013
8379853 Descrambler Feb. 19, 2013
RE43993 Method and apparatus for scrambling and/or descrambling digital video data and digital audio data using control data Feb. 12, 2013
8363840 Method and apparatus for providing broadcast service using encryption key in a communication system Jan. 29, 2013
8365214 Systems and method for determining visual media information Jan. 29, 2013
8345869 Method and apparatus for file sharing of missing content between a group of user devices in a peer-to-peer network Jan. 1, 2013

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