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8799659 Advanced multi-channel watermarking system and method  
A method, computer program product, and computing device for modifying a first channel portion of a digital media data file to include at least a first primary watermark. A second channel portion...
8792673 Modifying restricted images  
An apparatus, device, methods, computer program product, and system are described that determine a restricted image within a media asset, modify the restricted image to obtain a modified image...
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...
8731192 Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit  
A data generating is device capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing...
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...
8477937 Methods and systems for providing interference based physical-layer encryption  
A method for encrypting an information carrier comprising generating a sequence of data using a sequence generator, modulating, using a first modulator an output from the sequence generator such...
8467525 Steganographic method and device  
An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is...
8325917 Reproducing device, recording device, recording medium, data processing method, data processing program, data recording method, data recording program, and integrated circuit  
A data generating device is capable of preventing unauthorized extraction of plaintext content between decryption processing and digital watermark embedment processing. A content reproducing...
8290145 Transition between masked representations of a value during cryptographic calculations  
In a method for the transition from a first masked representation of a value to be kept secret to a second masked representation of the value, according to a first aspect of the invention at least...
8238692 Device and method for outputting a private image using a public display  
Disclosed are a device and a method for displaying a private image on a public display device. Image sequence pattern is generated for the private image and the corresponding masking image. The...
8224118 Device and method for outputting a private image using a public display  
Disclosed are a device and a method for displaying a private image on a public display device. Image sequence pattern is generated for the private image and the corresponding masking image. The...
8204222 Steganographic encoding and decoding of auxiliary codes in media signals  
Methods of steganographically encoding auxiliary data into audio and decoding the auxiliary data. In an encoding method, a processor maps the auxiliary data to samples in the audio data. A...
8074081 Method for replacing contents of a data storage unit  
A data storage device includes a plurality of data storage units, a physical random number generator with a noise source based on a physical noise process, for generating a random number, and a...
8064457 System and method for filtering a data packet using a common filter  
System and method for filtering a data packet using a combined filter are disclosed. In one aspect, the method includes receiving a data packet and N filters each comprising a mask and value. The...
7978929 Device and method for outputting a private image using a public display  
Disclosed are a device and a method for displaying a private image on a public display device. Image sequence pattern is generated for the private image and the corresponding masking image. The...
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...
7870393 Steganographic method and device  
An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is...
7860245 Methods and systems for multi-party sorting of private values  
Disclosed embodiments include a computer-implemented first method for providing the blinded result of a subtraction of a first split value of a first system from a second split value of the first...
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...
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...
7568100 Steganographic method and device  
An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is...
7447313 Pointers to encrypted data in RTP header  
In a system that transmits frames of data as a stream of packets, packet header information is augmented with localizing data that serves to distinguish frame header information and frame data of...
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...
7386130 Encryption secured against DPA  
The encryption device includes a random number generator for generating a random number; and a first selector for selecting one of q fixed values in response to the random number, a second...
7366908 Digital watermarking with content dependent keys and autocorrelation properties for synchronization  
A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of...
7315685 Method and apparatus for continuous feed of disks for recording digital video signals and authenticating the digitally recorded disks  
A digital signal recording apparatus a method of operating the same, used in conjunction with TV and video cameras, for example for security applications, includes a disk feeder system having a...
7305087 Digital home network and method for creating and updating such a network  
The local digital network comprises: access devices, for receiving data originating from outside the network and transmitting them at a point of the network; and presentation devices for receiving...
7086087 Information processing device, card device and information processing system  
It is a technological object of the present invention to provide an information processing device, a card and a card system that have a high level of security. In order to achieve the object...
6980650 System for providing keys  
A method for providing keys for descrambling scrambled content, the scrambled content being divided into frames, the method including: identifying a plurality of frames to be descrambled; for each...
6968058 Digital evidential camera system for generating alteration detection data using built-in encryption key  
A digital evidential camera system is for detecting the alteration of image data obtained by photographing an object. The system comprises the camera and an alteration detection unit. The camera...
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...
6901516 System and method for ciphering data  
A system for ciphering data for transmission by a communication device is provided. The system includes a memory device having a memory buffer a first access port connected to the memory buffer...
6529209 Method for providing privately viewable data in a publically viewable display  
A method for providing privately viewable data in a publically viewable display comprises the steps of: generating a sequencing pattern; generating a data signal having interspersed frames of...
6425082 Watermark applied to one-dimensional data  
In the process of embedding watermark information in one-dimensional source data, first spread one-dimensional data x(t) is generated by subjecting one-dimensional source data s(t) to...
6330333 Cryptographic system for wireless communications  
A wireless communications system (110) with increased privacy. The system (110) transmits an encrypted signal between a base station (112) and a wireless terminal (122). In the forward channel,...
6272634 Digital watermarking to resolve multiple claims of ownership  
A method and apparatus for digital watermarking to resolve multiple claims of ownership is disclosed. According to one embodiment of the invention, a first watermark requiring the host data for...
6061793 Method and apparatus for embedding data, including watermarks, in human perceptible sounds  
A technique for hiding of data, including watermarks, in human-perceptible sounds, that is, audio host data, is disclosed. In one embodiment a method comprises three steps. In the first step, data...
5396642 Variable frequency CATV jamming method and apparatus  
A frequency generating means, generates an initial frequency of greater amplitude than the amplitude of a television signal carrier wave. The generated frequency is compared to a reference...
5367269 System for producing an oscillating jamming signal utilizing a phase-locked loop  
A system for producing an oscillating signal includes a phase-locked loop including a control voltage producing circuit. The control voltage producing circuit is provided for producing a plurality...
5351292 Method and apparatus for preventing external detection of signal information  
In a method and an apparatus for preventing external detection of the signal information in video signals occurring in, and being emitted from, video signal circuits in a display unit, or a...
5321747 Method and apparatus for preventing extraneous detection of signal information  
In a method of preventing extraneous detection of signal information from raster scan signals in a plurality of consecutive line signals intended to form an image or partial images there is...
5287539 Interdiction program denial system for jamming audio and video signals  
Off premises cable television interdiction apparatus comprises a microprocessor actuation and control means for actuating and controlling at least one frequency agile voltage controlled...
5243647 Method and apparatus for broadband signal distribution  
Apparatus for broadband signal distribution is equipped with a detector for detecting when the apparatus is open and is further adapted to receive an entry code generator. If the entry code...
5056138 Television selection system  
A system connectable into standard television receiver systems for converting predetermined channels thereof to audio only channels and detecting selection of the predetermined channels to cause...
4991206 Method and apparatus for jamming selected television programs  
In order to selectively jam M selected channels to selected subscribers in a CATV system, each of M different oscillating signals, each of which oscillating signals has a duration longer than the...
4896354 Image reception system  
An image reception system is disclosed, which includes a tuner for selecting one of broadcast channels of CATV, a video detector connected to the tuner for deriving output signals having video...
4682359 Television picture and sound scrambler and method  
Television signal scrambling is effected by combining moderate level trap-attenuation of the visual carrier frequency with an injected fm-modulated interfering signal to effect, by adjustment of...
4599646 Method and apparatus for identifying unauthorized or defective converter/decoder boxes in CATV system  
A head-end apparatus for a CATV system is provided for facilitating identification of unauthorized or defective converter/decoder boxes in the system. According to the invention, an IF audio...
4521809 Method and apparatus for controlling access to selected television programs  
In order to control subscriber access to selected television programs in a CATV system, nonstandard horizontal synchronizing pulses, having a greater amplitude and either a higher or lower pulse...
4317213 Television reception interfering apparatus  
Apparatus for use with a television receiver for selectively inhibiting reception of television broadcast signals. The apparatus includes a number of signal generating circuits, each respectively...

Matches 1 - 50 out of 55 1 2 >