Matches 151 - 200 out of 236 < 1 2 3 4 5 >
Match Document Document Title
4339770 Synchronizing system with chroma parity detection  
In a television time-base corrector or synchronizer using a coherent memory, the input signal is written into predetermined memory addresses in order of their arrival after sampling begins for each...
4328513 Synchronizing signal generator device for television  
A synchronizing signal generator device for television includes an oscillator circuit which generates a color subcarrier signal, a voltage-controlled oscillator circuit which includes a counter and...
4321619 Second order velocity error correction for time base correctors  
A method and apparatus is disclosed for obtaining second order velocity error correction signals for use in a time base corrector that removes instabilities in a video information signal reproduced...
4261008 Dual standard color framer  
A color framing circuit is usable for both PAL & NTSC video signals. To do this, it detects the direction of zero crossings of the color burst with respect to the preceding horizontal sync pulse...
4255759 Color television receiver AFPC circuit  
A color television receiver includes an automatic phase control circuit (which will be hereinafter referred to simply as an APC circuit) with a voltage controlled oscillator for controlling the...
4249199 Phase compensated controlled oscillator  
A controlled oscillator comprises an amplifier including an active device, a filter network arranged in a feedback loop of the amplifier for providing regenerative feedback to sustain oscillation...
4247865 Alternate frame shift color video display technique  
An apparatus as disclosed for displaying a stored single frame NTSC color video signal on a TV monitor comprising a delay line for delaying every alternate retrieved frame by one-half the color...
4247867 Apparatus for processing the output voltage of a detection circuit  
The apparatus comprises a phase detection circuit for detecting the phase difference between two input signals to produce a single output which is supplied to charge a capacitor through a gate...
4229759 Signal detector including sample and hold circuit with reduced offset error  
A sample and hold detector arrangement suitable for construction in integrated circuit form as an automatic chroma gain control detector, or a color oscillator AFPC detector, or the like. A wide...
4212027 Time base compensator  
Timing errors in a color television signal equal to a fraction of the nominal period of one cycle of color burst are corrected by clocking an analog-to-digital converter during each horizontal line...
4196445 Time-base error correction  
In an automatic phase control circuit having a predetermined lock-in range wherein the oscillating signal produced by the adjustable oscillator of the automatic phase control circuit is used in...
4193085 Apparatus for removing jitter in color television signal  
An apparatus for removing jitter in a color signal is provided with a record/play-back apparatus for recording and playing back a color television signal. The color television signal played back by...
4178607 PAL color television signal generator for control of time base corrector  
A signal generator includes a delay circuit for delaying a pulse signal synchronized with the horizontal synchronizing signal in video signals according to a PAL color television system, and a...
4170023 Carrier AGC circuit, especially burst ACC and APC  
A burst signal level detecting circuit for an automatic color control (ACC) circuit of a television receiver includes a band pass amplifier through which an input chrominance signal is supplied to...
4152719 Video picture compression  
A video compressor including an analogue to digital converter for sampling an incoming video signal, a store for holding the sampled signal and a digital to analogue converter for reconverting the...
4122478 Clock signal generator providing non-symmetrical alternating phase intervals  
Apparatus is disclosed for providing a square wave output signal for use in alternating the phase of a sampling clock signal on successive video lines of a video signal having a horizontal blanking...
4119999 Apparatus for inserting a digital sync word, phase-synchronized to the color subcarrier, in place of the horizontal sync signal  
Apparatus is disclosed for processing an analog color video information signal for recording on a magnetic media which involves stripping the horizontal synchronization pulses from the horizontal...
4118741 Hue adjusting circuits  
In a circuit for processing a chroma signal the chroma signal is applied to a demodulator through a first phase shifter. The burst signal is applied to an automatic phase adjusting circuit...
4095255 Controlled oscillator with increased immunity to parasitic capacitance  
A controlled oscillator comprises an amplifier including an active device, a filter network arranged in a feedback loop of the amplifier for providing regenerative feedback to sustain oscillation...
4062041 Input voltage controlled oscillator circuit for a television signal time base corrector  
An input voltage controlled oscillator circuit for a digital video time base corrector used to process television signals to remove time base errors introduced during signal recording, reproducing,...
4056826 Subcarrier regeneration circuit for color television receivers  
In a subcarrier regeneration circuit for color television receivers, a phase detector output is sampled by a signal sample-and-hold circuit and a bias sample-and-hold circuit to develop a voltage...
4054904 Video signal coding system  
A video signal coding system includes multiple sources to load a digital version of a composite video signal into an associated storage memory. The several memories or memory portions are...
4052733 PAL four-frame subcarrier phase detector  
Apparatus for digitally processing a composite video signal recorded in PAL format for producing a continuous waveform at a four-line rate indicates at any four-frame reference time if the polarity...
4038683 Television synchronizing generator  
A synchronizing generator is provided for synchronizing the composite video signal output of a television camera to an external television system reference represented by a source of reference...
4020500 Controlled oscillator  
A controlled oscillator suitable for construction largely in integrated circuit form includes an oscillating amplifier stage and a regenerative feedback loop including a resonant frequency...
3986204 Video synchronizing apparatus and method  
An apparatus for use in conjunction with a processing system of the type which receives an input video signal comprising successive scanlines, each of which consists of a blanking portion that...
3978519 Digital time base correctors for television equipment  
The television digital time base corrector comprises an analogue to digital converter for receiving a video analogue signal, a store for receiving the successive line information in digital form...
3862365 SYNCHRONIZING SYSTEM FOR A PLURALITY OF SIGNAL TRANSMITTERS USING OSCILLATORS OF HIGH FREQUENCY STABILITY  
A synchronizing system for synchronizing independently operating reference frequency signal oscillators of at least two transmitters. The phase relation between the signals produced by the two...
3860954 COLOR SYNCHRONIZATION CONTROL CIRCUIT WITH GENERATION OF COLOR KILLER SIGNAL  
An automatic phase-control circuit for a reference sub-carrier oscillator of color television receivers, which includes a phase comparing means for comparing a phase of output of the reference...
3850412 FREQUENCY AND PHASE ACQUISITION IN A COLOR SUBCARRIER REGENERATOR  
In a cathode-ray vectorscope for a PAL television system, a method and means is provided for substantially locking a vector display to the 135° and 225° references when no color burst is present....
3761608 PHASE DETECTOR  
A phase detector is disclosed, which is constructed such that a television signal including chrominance signal and color burst signal and a local color subcarrier signal are phase compared to each...
3740456 ELECTRONIC SIGNAL PROCESSING CIRCUIT  
A sample and hold detector arrangement suitable for construction in integrated circuit form as an automatic chroma gain control detector, or a color oscillator AFPC detector, or the like. A wide...
3740461 DETECTOR CIRCUITS WITH SELF-REFERENCED BIAS  
A sample and hold arrangement is disclosed having two similar detectors which operate in a complementary manner during each operating cycle. One detector is keyed on during a sampling interval to...
3739081 METHOD AND APPARATUS FOR COLOR SUBCARRIER GENERATION  
A color subcarrier signal is gated by DC restoration subsequent to synchronous demodulation. DC restoration is provided the demodulated signal relative to detected peaks of the color subcarrier...
3730982 BURST LEVEL DETECTORS AND PHASE DETECTORS UTILIZING THE SAME  
A burst level detector for use in a color television receiver comprises a balanced type differential amplifier stage including a pair of transistors, a pair of load resistors respectively connected...
3715471 COLOR TELEVISION RECEIVER  
In a television receiver which receives color television signals including a carrier chrominance signal; in order to compensate for the out-of-phase condition of a carrier chrominance signal and...
3702897 HUE CONTROL CIRCUIT FOR COLOR VIDEO SIGNAL  
A hue control circuit has a phase shifting circuit which may be connected to a transmission line for a NTSC system color video signal. The phase shifting circuit is connected to the transmission...
3668316 TRANSMISSION SYSTEM FOR OVERLAPPING PULSES  
A system for combining discrete, overlapping electrical signals and for transmitting the signals over a single conductor rather than a plurality of conductors, the composite transmitted signal...
3648179 CONTROL DEVICE WITH A PLURALITY OF CONTROLLING UNITS WHICH ARE SIMPLY ADJUSTABLE BATH INDIVIDUALLY AND SIMULTANEOUSLY TO DESIRABLE CONDITIONS  
A control device comprises at least two signal transmission channels, each of the signal transmission channels having a first controlling means which is adjustable over a desired wide range and a...
3646252 DECODER ARRANGEMENT FOR A SIGNAL TRANSMISSION SYSTEM EMPLOYING INFORMATION TRANSMISSION BY MEANS OF A QUADRATURE-MODULATED CARRIER  
A decoder arrangement for a quadrature-modulated signal having periodically occurring bursts of each of the two quadrature components wherein during the recovery of the two carrier components...
3637936 AUTOMATIC FINE TIME-CORRECTING CIRCUIT FOR TIME CORRECTING THE OUTPUT OF A COARSE TIME CORRECTOR IN A COLOR TV SYSTEM  
An automatic fine time-correcting circuit coupled to the output of the coarse time corrector in which the reference signal used in the phase comparator circuit is taken off a color carrier...
3637924 AUTOMATIC CHROMINANCE CONTROL CIRCUIT  
An automatic chrominance control (ACC) circuit for a color television receiver is used with a chrominance amplifier in the form of an integrated circuit differential amplifier operated with a...
3624274 APPARATUS FOR DETECTING THE PHASE DIFFERENCE BETWEEN A PLURALITY OF SIGNALS AND COLOR-SHADING COMPENSATOR MEANS EMPLOYING SUCH APPARATUS  
A method and the apparatus for detecting the phase difference between a pair of signals is provided wherein the DC phase difference is deleted from the output and only the AC phase difference is...
3594498 COLOR-PHASE-CORRECTING CIRCUITRY WITH ONE-HUNDRED EIGHTY DEGREE AMBIGUITY ELIMINATION  
Color-phase-correcting circuitry for use with a color video tape machine is disclosed. Such machines typically include (1) a tape drive, (2) means for controlling the speed of the tape which are...
3592960 AUTOMATIC FREQUENCY CONTROL FOR AN OSCILLATOR IN A CHROMA DEMODULATION CIRCUIT  
In the chroma channel of a color television receiver, a demodulator circuit for the chroma subcarrier component and an oscillator circuit for producing a control signal having the frequency and...
3590144 CHROMINANCE SUBCARRIER CONTROL IN COLOR TELEVISION TRANSMISSION  
A circuit for imparting to the chrominance subcarrier to a television transmitter a desired frequency and phase relationship with the horizontal synchronizing pulses of the video information...
3582539 COLOR PHASE LOCK  
A color sync system for a color television receiver comprising a color burst amplifier, a phase detector, and a subcarrier reference oscillator, and including a diode to receive the output signal...
3576389 AUTOMATIC COLOR CONTROL CIRCUIT  
In an automatic color control circuit for color television receivers, color burst signals separated from the output of a carrier chrominance signal amplifier are rectified to produce a control...
3518363 HUE CONTROL CIRCUITRY  
3504110 VARACTOR HUE CONTROL  
Matches 151 - 200 out of 236 < 1 2 3 4 5 >