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Match Document Document Title
8645281 Process for authenticating an end user  
A process for authenticating an end user. A first pattern of colored quadrilaterals is generated. A second pattern of multiple colored nodes that include a first subset of nodes is generated. The...
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...
8150034 Method and system for transmitting data from a first data processing device to a second data processing device  
A method and a system for transmitting data from a first data processing device to a second data processing device, wherein the first data processing device has a display device. The second data...
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...
7900264 Multimedia client/server system with copy protection recovery and methods for use therewith  
A multimedia client/server system includes a multimedia server module that is coupleable to a plurality of multimedia sources that produce at least one multimedia signal. The multimedia server...
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...
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...
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...
7218737 System and method for an adaptive state machine to control signal filtering in a serial link  
A method for adaptively filtering a control signal in a serial link includes monitoring for a blanking interval in a video stream having an associated clock signal and monitoring for an occurrence...
7117128 Method and apparatus for digital signal filtering  
A Q-Filter is a reconfigurable technique that performs a continuum of linear and nonlinear filtering operations. It is modeled by unique mathematical structure, utilizing a function called the...
6654887 Steganography decoding methods employing error information  
Media content, such as imagery (including video) and audio, can be encoded to convey hidden information (steganographic encoding) for a variety of purposes, including communication of auxiliary...
6557103 Spread spectrum image steganography  
The Spread Spectrum Image Steganography (SSIS) of the present invention is a data hiding/secret communication steganographic system which uses digital imagery as a cover signal. SSIS provides the...
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...
6292567 Sync suppression television security system with addressable sync restoration  
A television transmission security system, including scrambling a television signal by suppressing at least one of the horizontal sync pulse and vertical blanking interval of the television...
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...
5450454 Coding and decoding a modulated radio frequency signal  
The invention relates to a method for coding and decoding a radio frequency signal, modulated with a TV program or other message and transmitted from a transmitting center to a plurality of...
5446795 Universal decoder for television signal scramble systems  
A universal decoder for scrambled television signals in which the signals are processed in a circuit by converting them to other frequencies and then removing the scrambling signal. One method...
5303295 Enhanced versatility of a program control by a combination of technologies  
A program control system for controlling access to premium programming and/or premium channels comprises a program control apparatus which may incorporate one or more subscriber modules. The...
5282248 Time limited signal conduction system  
A time limited signal conduction switch 13 powered by an internal energy source 16 with a given life span. A lithium inorganic cell 16 is used as the internal energy source and is coupled to a...
5249228 Cable television signal scrambling system  
In a cable television system an interferer signal is inserted into the video signal for scrambling purposes except during a vertical blanking reference interval containing a reference signal for...
5235640 Master decoder for television signal scramble systems  
A master decoder for scrambled television signals in which the signals are processed in a circuit by converting them to other frequencies and then removing the scrambling signal. One method uses...
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...
5208854 Picture carrier controlled automatic gain control circuit for cable television interdiction or jamming apparatus  
An off-premises i.e. a negative or positive trap, jamming cable television or interdiction system, includes a picture carried controlled automatic gain control circuit. A broadband television...
5068893 Television signal processing network for subscription television jamming signals  
Networks which remove the jamming signal from the television signal supplied to subscribers for a premium T.V. channel in a cable (CATV) or other subscription television system utilizes surface...
5027399 Signal switching apparatus  
Apparatus is provided for switching traps in and out of a cable television signal path. A plurality of double pole double throw switches is connected in series with the signal path. Each switch...
4939779 Temperature compensated trap filter  
A temperature stable television signal trap filter device is easily produced in a wide range of temperature compensating values using commercially available components for securing pay television...
4903297 Restricted access television transmission system  
A Television Signal Transmission Security System which provides a higher degree of security then previously possible by utilizing encoding and decoding technology which effectively prevents...
4841569 Secure video distribution system  
A video distribution system (e.g., CATV or MATV) employs at least one channel having a reception-defeating jamming signal which changes frequency periodically or, preferably, randomly. The signal...
4827509 CATV receiver  
In a CATV receiver for receiving scrambled television signal, then de-scrambling it to original television signal responsive to key pulses contained in the scrambled television signal, and then...
4748667 Jamming signal scrambling and descrambling systems for CATV  
Scrambling and descrambling systems utilizing jamming signals provide improved pictures with minimal distortion due to ghosts and artifacts. The television signal is combined with a jamming signal...
4633309 Cable television master/slave decoder control  
A method of controlling the operation of slave decoders in a cable television distribution system having a central control computer; in which each subscriber location having a slave decoder also...
4623919 Method and system for controlling access to transmitted modulated electromagnetic wave carried information  
A method and system for making possible enforceable subscription available electromagnetically transmitted communications. Mailable receiver tuning components are described which serve to make...
4623918 Pay television system utilizing multi-frequency passive filters  
Selected interference frequency signals are inserted into the video or RF signal at the transmitter for scrambling purposes, either singly or in pairs. At the receiving end the signals are decoded...
4580161 Cable television subscriber control system including addressable filters having a variable pole  
A filter for use in a cable television system for filtering out a given channel comprising a two pole filter, said filter including one pole which is fixed at the center frequency to be tuned out...
4575753 Method of and apparatus for scrambling and decoding television and similar signals with wobbulating trapping  
Television or similar picture scrambling or the like wherein narrow trapping of the visual carrier is effected with one-direction FSK-FM modulated wobbulation of the visual carrier, preferably...
4567516 Special program decoding of scrambled subscription television transmissions  
This disclosure is concerned with a limited time operative decoder for special scrambled television program transmissions involving a voltage source for energizing the decoder of limited time...
4398214 Wired television broadcasting system  
There is disclosed a wired television system comprising a source of television signals supplying signals to a transmission network, subscriber stations connected to the network, means for...
4286288 Apparatus and method for tamper resistant channel attenuation in subscription television converter  
A tamper resistant subscription television converter is made by connecting a bandstop filter in the Radio Frequency circuit of the converter. The filter, for attenuating one or more preselected...
4272791 Method and apparatus for video recording  
Apparatus for connecting a cable television system utilizing a multi-channel converter having a preselector switch and a preselected converter very high frequency output signal to a video cassette...
4268860 Television subscriber apparatus  
This disclosure is concerned with modulating the tuning of a picture carrier frequency trap to insure audible distortion of the sound signal in a subscriber television system irrespective of...
4222067 Tamper-resistant television signal scrambling  
A method and apparatus for blocking the reception of a subscription television program while substituting a replacement program at a blocked receiver, provide security against detuning an...
4222066 CATV Subscription service control device and attenuator therefor  
A CATV subscription service control device has a switched buffer to prevent jamming signals from a switched attenuator from propagating throughout the system. The attenuator uses mutual inductance...
4099203 Television signal scrambling with introduction of replacement program signals  
A method and apparatus are provided for blocking the reception of a subscription television program signal while substituting for the blocked signal a replacement program signal which is received...
4097894 Secured scramble decoder filter  
A secured scramble decoder filter comprised of a narrow band filter assembled on a fragile substrate and mounted in a housing wich automatically destroys the filter when any tampering is...
4091413 Security system for pay-TV channel  
A system for securing a pay-TV channel by coherently moving the RF components of the channel (with or without an encoding signal) beyond the AFC holding range of commercially available tuners. The...
4074311 Television security system  
A system for subscription TV security which is comprised of a scramble signal generator which adds a modulated RF carrier signal to the TV channel transmission. Preferably the frequency of the...
3989887 Swept frequency trap jammer for secure television system  
A jamming circuit for making unusable the television signal of a preselected channel includes a bridged T-trap filter having a pair of high Q circuits adapted to be tuned to the carrier frequency...
3898375 Notch rejection filter  
The filter is of a bridged-T construction, and includes a pair of semiconductor rectifiers in back-to-back relationship. An oscillation voltage is applied to the junction of the rectifiers to vary...

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