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7391472 |
System and method for adaptive color burst phase correction
We describe and claim an adaptive color burst phase correction system and method. The adaptive color burst phase correction system includes a signal detector to extract a color burst from a video...
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7324118 |
Super imposed image display color selection system and method
An optimal pen color is automatically selected for a given background color based upon a predetermined relative distance in the Munsell color-order system. The predetermined distance is defined in...
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7212724 |
Jitter correcting apparatus and method for video signals
A jitter correcting apparatus and method for a video signal in a video signal reproduction system includes a digital video decoder for demodulating an externally-applied video signal and a...
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7167208 |
Digital broadcasting receiver and method for compensating color reproduction error of the same
Digital broadcasting receiver, and method for compensating a color reproduction error therein, the digital broadcasting receiver including a channel decoder, a TP part for demultiplexing a TP...
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6453109 |
Video-signal processing apparatus providing a first clock signal and second clock signal which is based on the phase of the input signal
A signal processing apparatus includes a first clock generation circuit for generating a first clock signal having a constant frequency, a detection circuit for detecting a phase change in an input...
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5845039 |
Time-base correction in a video recording/playback system
A video recording/playback system includes in its recording electronics time-base correctors both for luma signal and for color-under signal, the time-base corrector for luma signal being used to...
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5822011 |
Apparatus for detecting noise in a color video signal
A phase detector provides angular phase error measurements of the color burst component of a video input signal. Burst phase errors exceeding a given angular threshold are detected and the number...
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5559812 |
Digital time base corrector using a memory with reduced memory capacity
A digital time base corrector uses a memory with a reduced storage capacity, to reduce the cost. Absolute value data of an amplitude and polarity data of a burst signal in a color video signal are...
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5515108 |
Digital automatic frequency control method and circuit therefor
A digital automatic frequency controlling method and circuit therefor in which a digital horizontal sync signal is separated from an input horizontal sync signal in response to a system clock, a...
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5475440 |
Digital time base corrector for video signal reproduction
A digital time base corrector which can perfectly eliminate residual errors. A sync clock signal whose phase is synchronized with a time base fluctuation included in a reproduction video signal is...
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5471250 |
Digital time base corrector with dropout compensating function
A digital time base corrector reduces the capacity of a memory to approximately a 1 H of image data while maintains the interleave relationship between a luminance signal and a chrominance signal...
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5459524 |
Phase modulation demodulator apparatus and method
This invention is for a reference generator and demodulator for recovering information which has been phase, modulated on (or encoded on) a carrier. The inventive concepts described herein include...
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5351089 |
Video signal processing device and method
A video signal processing device comprises: a unit for extracting a first color burst signal from a first video signal; a unit for generating a first subcarrier in synchronism with the first color...
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5280345 |
Jitter correction circuit for reducing jitter components of a luminance signal in video information compression
A jitter correction circuit includes a first device for detecting a phase difference between a horizontal sync signal in a video signal and a system clock signal locked to burst components of the...
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5210619 |
Chroma phase modulator
An A/D converter converts a composite video signal to a digital signal. A bandpass filter extracts a chroma signal-A sinX from the composite video signal in digital form. A delay circuit delays the...
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5153714 |
Circuit for removing jitter of chrominance signal and television set using the same
A frequency of a chrominance signal including a jitter component and separated from a color video signal is converted from a first frequency to a second frequency by first frequency converting...
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5043799 |
Color image display control apparatus with correction of phase difference in sampling clock
A color image display control apparatus for receiving a composite color picture signal and processing color image data included in the signal. A color picture signal in an analog form included in...
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4989073 |
System for compensating timing errors during sampling of signals
At the input to a video signal time base corrector, the phase error is sampled during each burst interval and is used to control the operation of an analog-to-digital convertor to compensate for...
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4907070 |
Time base corrector with memory mapped system control
A time base corrector is comprised of a plurality of system function modules implementing the functions for time base correcting an analog composite color video signal with a stable reference video...
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4736238 |
Fully digitized video signal reproducing apparatus
A digital television circuit in which the analog FM video signal is first digitized and all processing is performed digitally, including FM demodulation. Clocks at the subcarrier frequency and four...
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4729013 |
Time base error corrector
A time base error corrector comprises a chrominance subcarrier phase corrector whereby the subcarrier phase of a video signal is controlled before being written in the buffer memory in such a way...
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4717950 |
Signal phase control by memory cycle read/write groups unlock
An apparatus for controlling the phase of a video data signal to effect color correction includes a video data memory and memory control circuit. Interlaced write and read portions of the memory...
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4716454 |
Chroma phase word encode/decode in a video processing system
A video signal correction circuit of a signal processing system includes means for determining the chroma line type, for inserting the line type information in the video signal, and for extracting...
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4714954 |
Read start pulse generator for time base corrector
A read start pulse generator comprises circuit elements for automatically adjusting the phase of a read start pulse signal by cancelling phase offset caused when phase adjustments are made to a...
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4698667 |
Method to reestablish a predetermined phase relationship of a chrominance TV signal with respect to a reference
To simplify the apparatus and the method steps to reestablish predetermined phase relationship of a chrominance TV signal with a reference, two chrominance derived signals of carrier frequency,...
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4688081 |
Apparatus for correcting time base error of video signal
In order to correct a time base error of a video signal reproduced from a video signal recording/reproducing apparatus such as a VTR or the like, when the reproduced video signal is sequentially...
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4677459 |
Reference signal generator
A reference signal generator used to compensate for a time base error of a color video signal reproduced from a video tape recorder having a memory into which the color video signals are written in...
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4675724 |
Video signal phase and frequency correction using a digital off-tape clock generator
In a time base correction system, a composite color television analog signal derived from a prerecorded tape is converted by an analog-to-digital (A/D) converter to a digital signal having...
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4635100 |
Digital automatic video delay system
A digital automatic video delay system includes a device for digitalizing a television signal with sampling clock signals having a frequency of N (an integer) times as high as the frequency of the...
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4373168 |
Digital time-base corrector having a wide correction range
Disclosed is a digital time-base corrector (TBC) capable of correcting not only time-base fluctuation (jitter) but also a time-base change contained in a VTR-reproduced television video signal...
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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...
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4214262 |
Digital apparatus for correcting a time-base error in a television video signal
A digital time base corrector for correcting a time-base error in a television video signal, the video signal including a horizontal synchronizing signal and a color burst signal. The start of a...
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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...
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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...
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4127866 |
Reference signal generator
A reference signal generator used to compensate for a time base error of a color video signal reproduced from a VTR (video tape recorder) having an oscillator for generating a train of pulses that...
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4110785 |
Clock generator for video signal processing
A clock generator is provided which demodulates the burst subcarrier portion of a video signal containing time base errors. The demodulation is with respect to an external subcarrier reference...
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4109276 |
Memory read/write organization for a television signal processor
In a television signal synchronizer having a coherent memory, it is necessary to modify the writing of data into memory or the reading of data out of memory in order to provide field conversion. In...
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4074307 |
Signal processor using charge-coupled devices
A time base corrector for removing time base errors from video signal information of a type including synchronizing pulses is provided. A storage means in the form of a charge coupled device (CCD)...
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4069499 |
Write clock pulse signal generator for digital time base corrector
In a time base corrector which converts incoming video signals to digital form and writes the digitized signals in a memory at a clocking rate varying in accordance with time base errors in the...
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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,...
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4015288 |
Write clock generator for digital time base corrector
A write clock generator of a digital time base corrector for removing time base errors from color video signals includes a voltage controlled oscillator (VCO) in a phase lock loop by which the...
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3990103 |
Input oscillators for time base correctors
An input oscillator for use in a digital time base corrector comprising a triggered oscillator circuit and a variable period delay device having a first input for receiving the synchronizing pulse...
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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...
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3860952 |
VIDEO TIME BASE CORRECTOR
A time base corrector for processing television signals to remove time base errors introduced during signal recording, reproducing, or transmission. Incoming video signals are converted from analog...
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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...
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3614303 |
ARRANGEMENT FOR CORRECTING TIMING ERRORS IN COLOR TELEVISION SIGNALS
An arrangement for correcting timing errors in a color television signal which is reproduced after being stored on magnetic tape. The color television signal is applied to one end of a delay line...
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3474190 |
PHASE DISTORTION COMPENSATING CIRCUIT FOR PAL COLOR TELEVISION RECORDING SYSTEM
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