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Match Document Document Title
8774406 Masking addition operation device for prevention of side channel attack  
A masking addition operation apparatus for prevention of a side channel attack, includes a random value generation unit generating a first random value for a first input, second random value for a...
8553881 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...
8223964 Three-dimensional authentication of mircoparticle mark  
A system, method, and apparatus for authenticating microparticle marks or marks including other three-dimensional objects. The authentication utilizes two or more sets of information captured or...
8204929 Hiding sensitive information  
An improved methodology and implementing computer system are provided in which sensitive information is selectively masked in order to enable such information to be relatively securely and...
8094818 Method to synthesize video copy protection signals  
A method and apparatus for defeating copy protection signals in a video signal, and also for providing copy protection signals for a video signal, is disclosed. The defeat technique generally...
7940930 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...
7853121 Recording medium, reproduction device, program, and reproduction method  
A BD-ROM stores a video stream and a plurality of pieces of copy control information. The plurality of pieces of copy control information include “CCIforHD with CM”, “CCIforSD with CM”, “CCIforHD...
7831042 Three-dimensional authentication of microparticle mark  
A system, method, and apparatus for authenticating microparticle marks or marks including other three-dimensional objects. The authentication utilizes two or more sets of information captured or...
7817902 Apparatus and method of generating video-reproducing clock signal from 480p signal  
An apparatus and a method of generating a video-reproducing clock signal from a 480p signal. The apparatus generates a video-reproducing clock signal from a 480p signal that includes a vertical...
7765402 System and methods for the wireless delivery of a message  
Systems and methods for a wireless communication system used for transmitting and receiving information, the information not containing identification of the information's intended recipient. A...
7646869 System for copy protection of an information carrier  
The present invention relates to a system for copy protection of an information carrier, said system comprising a diffractive layer for delivering a speckle pattern when illuminated by a light...
7646963 Information processing apparatus, information processing method and presentation medium  
An information processing apparatus comprises an extracting means for extracting main information including first copy control information and auxiliary information representing attributes of the...
7391866 Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list  
A reception apparatus includes: a reception unit for receiving the scrambled content, the scrambled content being scrambled so that a predetermined unit of scrambled content is descrambled using a...
7389420 Content authentication and recovery using digital watermarks  
The disclosure describes methods for using digital watermarking to authenticate digital media signals, such as images, audio and video signals. It also describes techniques for using embedded...
7340059 Programmable scrambler and De-scrambler for digital telephony equipment  
A scrambler circuit for digital telephony equipment receives a sequence of input bits, generates the sequence of output bits based on the input bits and stores the sequence of output bits. The...
7233670 Signal tracing system and method  
A system and a method are for determining the origin of a signal received by a pay television subscriber in a given region. A system includes an encryption device located at a main operator, a...
7043022 Packet order determining method and apparatus  
A transmitter adds packet transmission order information to transmitted packets using a forward error device (416) and a masking device (420). The masking device (420) receives ordering masks...
6928162 Method and system for manipulating and telescoping a hash function  
A method and system for providing a hash and a complement of the hash for an item in a computer system are disclosed. The method and system include providing a plurality of components from the...
6925342 System and method for protecting digital media  
A system and method for verifying digital recordings that have a plurality of tracks. The system includes an encoder that: divides the digital recording into a plurality of sections and associates...
6839433 Method and apparatus for generating a signal that defeats illegal cable decoders  
Illegal cable decoders, i.e., black boxes, are defeated by adding, inserting and/or superimposing an added signal onto an already scrambled video signal, which added signal is capable of...
6792111 Cryptation system for packet switching networks based on digital chaotic models  
A cryptation system for information transmitted through packet switching networks masks the digital information data by combining it at the transmitting station with digital data of a certain...
6754347 Input/output unit, input/output method, and receiving unit  
A switching portion of an IRD supplies a non-descrambled TS (transport stream) received from a front end portion or a descrambled TS received from a descrambler to a DVCR connected to an IEEE 1394...
6633982 Method and process for managing ultra secure electronic distribution of digital movies to commercial exhibitors  
A method and system for managing electronic distribution of digital movies to commercial exhibitors at warp speed is made ultra secure by utilizing synchronized and concurrent digitally bifurcated...
6275509 Masked signal transceiver  
A masked signal transceiver of the present invention comprises a transmitter for transmitting a combined signal of a primary communications signal and an attenuated secondary communications signal...
6215875 Cipher processing system  
A cipher processing apparatus which readily updates a cipher processing circuit for encrypting information communicated through a communication function. A service station side and a user side are...
6188870 Passive interdiction system for scrambling  
The passive interdiction system for CATV scrambling provides a plurality of passive, preselected negative signal traps for securing specific CATV channels. Each trap cyclically attenuates the...
5621792 Method and system of controlling the mode of access to signals, in particular picture signals  
The present invention concerns a method of controlling the mode of access to wanted signals, such as picture signals (IMAGE), whereby the user selects an access mode to a wanted signal remotely. A...
5467397 Interdiction method and apparatus with variable dwell time  
A cable television interdiction apparatus comprises a microprocessor actuation and control means for actuating and controlling one or more frequency agile voltage controlled oscillators. The...
5463689 Interdiction method and apparatus with random mode jamming  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5361301 Interdiction method and apparatus with direct memory control of variable frequency elements  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5355410 Method and apparatus for multi-tire time shared CATV jamming  
A method and apparatus, for jamming selected channels, in a CATV system, wherein six different pre-determined frequencies ("fx"), are generated at a head end, on a time divisional basis, which...
5341424 Interdiction method and apparatus with frequency change inhibit function  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5323462 CATV subscriber disconnect switch  
Television service denial apparatus comprises a microprocessor controller for controlling the generation of a control signal waveform. The control signal toggles a program denial device between...
5317635 Interdiction method and apparatus with mode control for variable frequency elements  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5289541 Interdiction method and apparatus with constant blanking and variable dwell times  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5278908 Interdiction method and apparatus with programmable jamming effectiveness  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5276734 Oscillator system  
A system for producing an oscillating signal to be used for jamming signal for a band of CATV has a voltage producing circuit for producing a control voltage corresponding to the band, a first...
5265160 Interdiction method and apparatus with pulsed mode jamming  
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization...
5255318 Expandable cable television subscriber control system  
A subscriber control system designed to be placed outside of the subscriber's home, for controlling access to cable television signals provided by a cable television headend. The system is modular...
5243651 Diagnostic method and apparatus for a cable television interdiction system  
A diagnostic method and apparatus for a cable television interdiction system is provided. One or more diagnostic modes each corresponding to a particular problem or state associated with the...
5233652 Selective off-premises jamming for premium CATV service  
Selective off-premises jamming for premium CATV service is provided by using continuously running fixed-frequency oscillators (19.1-19.n) for generating jamming signals at each of a plurality of...
5228082 Jamming signal producing system in CATV  
A system for producing a jamming signal to be inserted in a band of CATV has a voltage producing circuit for producing a control voltage corresponding to the band, and a first voltage-controlled...
5142574 Optimum amplitude and frequency of jamming carrier in interdiction program denial system  
Off premises cable television interdiction apparatus comprises a microprocessor actuation and control means for actuating and controlling one or more frequency agile voltage controlled...
5140633 Cable subscriber control device using shared jamming modules  
A device is disclosed for controlling access to cable television signals. Jamming oscillators are shifted in frequency, jamming multiple services each. The oscillators are shared between multiple...
5014309 Off-premises cable television channel interdiction method and apparatus  
An off-premises cable television interdiction apparatus provides a microprocessor controller for controlling and switching one or more variable frequency voltage controlled oscillators. The...
4837820 Hybrid CATV scrambling system  
A CATV scrambling system ultilizes low cost, uncritical, pole mounted components for all subscriber locations and high cost precision components only in subscriber units provided at "premium"...
4825468 Video noise jammer  
A multichannel signal distribution control system, such as a CATV system, providing a plurality of video signal channels wherein selected channels are obscured by random noise jammer signals. The...
4792971 Selective viewing control system for CATV  
A selective viewing control system for controlling viewing access to designated channels in a CATV system. A CATV control center sends to viewing control units a digital signal indicating which...
4769838 Community antenna television reception controlling apparatus  
A reception controlling apparatus for a CATV system in which jamming signals are added to the signals sent to each subscriber's terminal unit in such a manner as to accurately jam the designated...
4737990 Unauthorized channel jamming signal applying method for CATV system  
In a jamming signal applying device connected between a cable and subscribers' terminal units in a CATV system, a signal for scrambling the video signal is produced in a time sharing mode, with...

Matches 1 - 50 out of 55 1 2 >