| 7020638 |
System and method for flexible micropayment of low value electronic assets |
| Mar-28-2006 |
An electronic asset system mints a stick of electronic assets that can be spent by the user with multiple vendors. Assets sticks are issued anonymously or non-anonymously in a way without requiring dedication... |
| 6654885 |
Method for authorization checking and configuration for carrying out the method |
| Nov-25-2003 |
The system checks whether authorization exists for at least two data processing devices to exchange data with one another. In the preferred embodiment, both data processing devices are of identical design.... |
| 6633982 |
Method and process for managing ultra secure electronic distribution of digital movies to commercial exhibitors |
| Oct-14-2003 |
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 data... |
| 6363150 |
Billing method for customers having IP telephony service with multiple levels of security |
| Mar-26-2002 |
A method for initiating a security and billing feature request at the beginning or during an active telephone call. The telephone subscriber can select one of a plurality of security levels that may be... |
| 5644637 |
Method and apparatus for recovering synchronizing signals in scrambled television pictures |
| Jul-1-1997 |
Suppressed synchronizing signals of a scrambled standard TV picture are recovered and the picture unscrambled by a method including the steps of: separating a video portion having suppressed sync signals... |
| 5271043 |
Device and method for the data transmission or storage optimizing the use of the pass-band |
| Dec-14-1993 |
A device and a method for the transmission or storage of data optimizing the use of the pass-band. Also, a method for transmission by phase modulation. In order to obtain high data throughput rates, the... |
| 5166976 |
System and method for detection of a pulse within a video signal |
| Nov-24-1992 |
An audiovisual subscription system includes means for aperiodically inverting the lines of a transmitted video signal of a frame-by-frame basis and for decrypting encrypted PCM audio information which... |
| 5133009 |
Method and apparatus for defeating the operation of an IC built-in noise inverter |
| Jul-21-1992 |
Apparatus for defeating a noise inverter disposed within the IC includes circuitry for changing the amplitude of the AGC signal applied to an AGC amplifier prior to the noise inverter so as to lower the... |
| 5113439 |
CATV terminal and video apparatus having a noise eliminating circuit |
| May-12-1992 |
In a CATV terminal or a video apparatus such as a TV receiver, noises superimposed on a DC part of a horizontal synchronizing signal of a video signal are eliminated by integrating the DC part or replacing... |
| 5113440 |
Universal decoder |
| May-12-1992 |
A microprocessor based decoder module for television video signals which have been encoded by suppressing sync pulses and/or inverting picture video. The decoder modules generates sync restoration gates... |
| 5029340 |
CATV terminal unit having an improved descrambling operation |
| Jul-2-1991 |
A CATV terminal unit descrambling operation is disclosed wherein unrecovered video pulse portions, existing because a scrambling compression period is longer than a descrambling expansion period, are eliminated.... |
| 4852164 |
Pulse generating apparatus |
| Jul-25-1989 |
Disclosed is a pulse generating apparatus used in a CATV receiving adapter for descrambling the sync signal in the video signal. The pulse generating apparatus comprises a peak detector for sampling the... |
| 4827511 |
Automatic gain control circuit for controlling gain of video signal in television receiver |
| May-2-1989 |
An intermediate-frequency automatic gain control circuit generates an IFAGC voltage for controlling the gain of an IF amplifier, in accordance with the level of the output signal of the IF amplifier. An... |
| 4790011 |
Auto clamp for modulator for suppressed sync signals |
| Dec-6-1988 |
Suppressed sync pulses in a scrambled video signal are restored to their proper level in another video signal that is applied to a clamp circuit for controlling the DC level of an amplifier coupled between... |
| 4718086 |
AGC in sound channel of system for processing a scrambled video signal |
| Jan-5-1988 |
A television receiver receives a scrambled television signal of the suppressed sync pulse type. The sync pulse is restored by a decoder which provides a sync restored video signal to video signal processing... |
| 4712237 |
Method and apparatus for unscrambling sync-suppressed television signals |
| Dec-8-1987 |
A TV signal decoder including a pair of flipflops, for receiving vertical sync signals identified by a single vertical blanking pulse in field No. 1 and a pair of pulses in field No. 2, includes a time... |
| 4706285 |
Automatic gain control of a scrambled video signal |
| Nov-10-1987 |
A television receiver receives a scrambled television signal of the suppressed sync pulse type. The sync pulse is restored by a decoder which provides a sync restored video signal to video signal processing... |
| 4703354 |
Non-linear sync signal processing circuit |
| Oct-27-1987 |
A non-linear sync signal processor for deriving a sync-like signal from video information with suppressed sync signals includes a differentiating circuit for deriving pulse potentials from the leading... |
| 4688097 |
D.C.-coupled video clamping circuit |
| Aug-18-1987 |
A d.c.-coupled video clamping circuit is disclosed for operation with normal video signals and sync suppressed scrambled video signals. For receiving normal video signals, a feedback path detects variations... |
| 4667232 |
Synchronizing pulse restoration circuit |
| May-19-1987 |
A decoder for a television signal encrypted with randomly inverted video and randomly suppressed sync pulses includes inverting and noninverting amplifiers for inverting the inverted video and a sync pulse... |
| 4571615 |
Timing generator for sync suppressed television signals |
| Feb-18-1986 |
A timing signal generator for recovering timing signals in scrambled video signals in which the synchronizing signals are suppressed includes a tuned detector responsive to the color burst signal contained... |
| 4562465 |
Adaptive video descrambling system |
| Dec-31-1985 |
A television signal is scrambled by suppressing horizontal and vertical synchronizing signals while leaving unsuppressed a reference level during a selected reference interval. Descrambling of the received... |
| 4558360 |
Decoder lockout defeat circuit |
| Dec-10-1985 |
A suppressed sync television decoder includes a phase locked horizontal oscillator for controlling operation of a suppressed sync detector which supplies a circuit for restoring suppressed sync in a television... |
| 4554581 |
STV Decoder with improved data signal recognition capability |
| Nov-19-1985 |
An addressable subscription television decoder includes an input stage including an IF amplifier for converting a scrambled RF television signal to a composite baseband video signal. The baseband video... |
| 4511919 |
Method and apparatus for scrambling and descrambling video signals in a multichannel system |
| Apr-16-1985 |
A system for scrambling a video signal that includes a vertical blanking interval of equalizing pulses spaced at half line intervals followed by serrations which are, in turn, followed by equalizing pulses... |
| 4467353 |
Television signal scrambling system and method |
| Aug-21-1984 |
A system for encoding or scrambling a television signal and for subsequently decoding or unscrambling the signal for presentation on the viewing screen of a television receiver. Encoding is achieved by... |
| 4463376 |
Television signal processing system for a wireless pay system |
| Jul-31-1984 |
A television signal processing system characterized in that a level of at least a portion of a blanking interval of a coded television signal is shifted towards a white level and falling of the level shifting... |
| 4454544 |
TV Privacy system using gray sync |
| Jun-12-1984 |
A decoder for reconstructing a standard composite video signal with standard synchronizing pulses from a video signal V with only gray sync encoding E.sub.GS, of a repetition rate f.sub.GS, and comprising... |
| 4408225 |
Subscription television decoder |
| Oct-4-1983 |
A decoder is responsive to a decode authorization signal for unscrambling a broadcast RF television signal having randomly suppressed horizontal blanking and synchronization pulses. The decoder comprises... |
| 4390899 |
Television signal processing system |
| Jun-28-1983 |
A television signal processing system characterized by coding operation which comprises inverting synchronizing signal components of a television signal with reference to a pedestal thereof, expanding... |
