|
Match
|
Document |
Document Title |
|
|
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 selector...
|
|
|
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 and...
|
|
|
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, the...
|
|
|
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 similar...
|
|
|
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 oscillator....
|
|
|
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...
|
|
|
4216500 |
Encoding and decoding system
The frequencies of a channel containing at least one modulated carrier are encoded by heterodyning them with an alternating current wave having a cyclically varying frequency, and decoding of the...
|
|
|
4085422 |
Fee-charging apparatus for television sets
An apparatus with specified video carrier jamming for disturbing the image on a screen of a TV receiver for Fee-charged Viewing Thereof comprises an oscillating circuit, a switch means, a feeding...
|
|
|
3899633 |
Subscription television system
A subscription television system, in which secure television signals modulated on carriers not directly receivable by a standard television set are impressed upon a master cable system extending to...
|
|
|
3896262 |
Subscription television jamming system
A system is disclosed for transmitting television signals which can only be intelligibly received by authorized subscribers. At the transmitter end of the system, a CW jamming signal is inserted in...
|
|
|
3760097 |
ADJACENT CATV CHANNEL JAMMING
A system for allowing the intelligible reception of a selected CATV channel at the subscriber's TV set and for jamming the CATV channels adjacent to the selected channel so that the subscriber...
|