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7489338 |
Automatic color-sync polarity control
A system and method for automatically controlling color synchronization polarity during video decoding. Various aspects of the present invention may comprise at least one module that is adapted to...
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7466897 |
Indicator device for receiver apparatus with data memory
Electrical apparatus for processing received digital data into audio and/or video formats for listening via speakers and/or viewing via a display screen connected to the apparatus. The apparatus...
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7184097 |
On-screen display apparatus
The present invention provides an on-screen display apparatus which can eliminate variations in the DC level at a time when an input chroma signal and an OSD chroma signal are switched, and prevent...
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6404974 |
Method and apparatus for treating a video signal
A method of treating a video signal to allow playing on a video cassette recorder (VCR) but not to allow copying using a VCR having an automatic gain control (AGC) when recording. The method...
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6219485 |
Method and apparatus for automatically adjusting the amplitude of a color burst signal
A novel method effectively adjusts the amplitude of a color burst signal in a chrominance of a composite video signal read by a reproducing head from a magnetic tape. A low pass filtered...
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6172713 |
Color television system determination circuit
A color system determination circuit for use with an input video signal having a frequency component is disclosed. The circuit includes a color trap filter for attenuating the frequency component...
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5761370 |
Dual-deck videocassette recorder
A dual-deck VCR includes a delaying portion for delaying a color signal of 629 KHz reproduced from one deck by a horizontal scanning period, a color comb filter for removing crosstalk from the...
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5655047 |
Video signal frequency modulator having automatic control function and controlling method therefor
A video signal frequency modulator having an automatic control function includes a reference generator for generating a sync tip level signal and a white peak level signal, a first switch for...
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5412482 |
Signal line changeover circuit with emitter followers
A signal line changeover circuit includes a first signal processing block having a first emitter follower for outputting a signal, a second signal processing block having a second emitter follower...
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5260843 |
Magnetic recording and reproducing apparatus with individual correction of amplitude variations of recording currents supplied to plural rotary magnetic heads
In a magnetic recording and reproducing apparatus, amplitude errors of recording currents respectively supplied to a plurality of rotary magnetic heads are detected, and, in individual periods of...
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5225913 |
Magnetic recorder and regenerator
A magnetic recorder and regenerator has a luminate signal input terminal for receiving a luminance signal, a line-sequential signal input terminal for receiving a line sequential signal consisting...
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5214718 |
Scan-in polygonal extraction of video images
A video image is extracted and stored as a geometric figure by generating a binary pixel map of the image. The binary pixel map contains one bit for each pixel in the image, representative of the...
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5194964 |
Apparatus for processing color or black and white video signals
A video-signal output apparatus according to the present invention is an apparatus for outputting a black-and-white video signal. The video-signal output apparatus is arranged to generate a...
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5097345 |
Magnetic video recording apparatus
A magnetic video recording apparatus applicable to a video tape recorder or the like is designed integrally with a television camera. The apparatus has a video signal output unit for outputting...
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4754323 |
Color image pickup device in which the level of a sequential color-difference signal is controlled on the basis of the level of the luminance signal
A color image pickup device suppresses false color signals in order to provide true color reproduction. That is, the device incrementally or continuously reduces false color signals. More...
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4723175 |
Video signal reproducing apparatus for reproducing recorded video signal from a magnetic recording medium
A video signal reproducing apparatus for reproducing a recorded video signal from a magnetic recording medium comprises a reproducing circuit for reproducing a recorded frequency division...
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4713700 |
A recording circuit having means to automatically set the recording current of a magnetic recording head
In a magnetic recording circuit with a bias current circuit adapted to superimpose a bias current from a bias oscillator on a recording signal and to supply a resultant signal to a magnetic head,...
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4700239 |
Differential gain and differential phase compensator circuit of a video signal
A method for recording a video signal having luminance and chrominance signals by using a plurality of rotary transducing heads on a recording tape moved longitudinally by a drive mechanism, in...
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4691247 |
Video signal recording/reproducing apparatus
A video signal recording/reproducing apparatus for recording and reproducing a video signal onto and from a recording medium with a magnetic head. In this apparatus, the recording chrominance...
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4673970 |
Chrominance signal processing system
A chrominance signal processing system includes a variable gain amplifier capable of effecting gain control for amplifying a carrier chrominance signal and an A/D converter for effecting an...
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4656527 |
Magnetic recording and playback apparatus
A magnetic recording and playback apparatus capable of simultaneously recording a plurality of information signals on a single magnetic recording medium and, thereby allowing recording a plurality...
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4628345 |
Circuit for analog digital conversion of a color television signal employing variable signal amplification
An analog digital conversion is provided for two color difference signals, for example for a recording according to a timeplex method. The color difference signals are adjusted in their amplitude...
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4612585 |
Chrominance signal recording and reproducing apparatus
A chrominance signal recording and reproducing circuit for a video tape recorder in which a frequency-modulated luminance signal and a low-frequency converted chrominance signal are mixed to be...
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4573075 |
Digital signal coring apparatus with controllable coring threshold level
A digital signal processing apparatus includes a digital coring circuit removing samples of digital input signals in a range determined by a digital threshold level signal. The threshold level...
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4549225 |
Color video signal processing circuit for performing level control and time axis deviation compensation
A reproduced color video signal processing circuit in a rotary recording medium reproducing apparatus reproduces a recorded signal from a rotary recording medium which is recorded with a composite...
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4533961 |
Magnetic recording apparatus with level adjusting means for mixed luminance, chrominance, audio and pilot signals
In a magnetic recording apparatus for frequency multiplexing and recording a frequency-modulated luminance signal, a chrominance signal, a frequency-modulated audio signal and a pilot signal on a...
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4524380 |
Chroma signal recording and reproducing circuit
A chroma signal recording and reproducing circuit of a magnetic recording and reproducing apparatus having a recording circuit for frequency-modulating a luminance signal of a color video signal,...
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4485396 |
Automatic chroma filter
An auto chroma filter averages the value of successive color burst amplitudes on a line-by-line basis over many video frames, by fetching a burst value from memory and loading it into an up/down...
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4466022 |
Color video signal reproducing apparatus which transforms the recorded signal of one signal format into signals of another format upon reproduction
A color video signal reproducing apparatus comprises a reproducing circuit for picking up and reproducing a recorded signal from a recording medium in which a carrier chrominance signal and a color...
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4459613 |
Method and apparatus for automatic adjustment with pilot signal of television image processing system
A method for automatic control of non-linear image processing of a television signal subjected to degradation upon passage through a quality degrading medium is disclosed. The processing is of the...
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4445142 |
Method and apparatus for frequency characteristic compensation of television signals reproduced from a tape record with reference to position of synchronizing signals on the tape
There is shown a method for correction of rapid periodic frequency characteristic errors in the reproduction of signals with periodic synchronizing signals from magnetic tape as well a circuit...
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4417284 |
Gain control circuit for a video tape recorder wherein the chrominance is gain controlled in response to the luminance signal as well as the chrominance signal
A detected luminance signal level is superimposed on a control signal of an automatic color control loop mounted in a chrominance signal path of an undercolor video tape recorder for compensating...
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4400742 |
Magnetic recording and reproducing apparatus for color video signals
A magnetic recording and reproducing apparatus, for recording and reproducing the color television signal including VIR signal, of the type having a comb filter which is inserted in the chrominance...
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4396953 |
Color video signal dubbing system for collating the outputs of signal sources
A color video signal dubbing system comprises a reproducing apparatus and a recording apparatus. The recorded signal is a multiplexed signal of a frequency-modulated luminance signal obtained as...
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4393412 |
Automatic chroma level control circuit for compensating both slow and rapid chroma level changes
When levels of chrominance signals reproduced from a helical scan video tape recorder are controlled, two types of control signals are generated based on a level of color burst signal of the...
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4384302 |
Composite video signal limiter
A filter separates a composite video input signal into luminance and chrominance signal components. The luminance signal component is limited to a range of values defined by first and second...
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4370679 |
Gain correction system for videodisc player apparatus
A video disc player is described for use with a video disc having frequency modulated video information recorded thereon in the form of a plurality of concentric circles or a single spiral. The...
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4356506 |
Automatic chrominance control circuit for a color video tape recorder
In a color video signal recording and reproducing apparatus of the type in which the color video signal is separated into the luminance signal and the composite carrier color signal; the separated...
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4335393 |
Method and system using sequentially encoded color and luminance processing of video type signals to improve picture quality
Conventional composite color video signals are re-formatted into a compressed serial format on a line-by-line basis, by sampling the luminance and chrominance components at a predetermined sampling...
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4292648 |
Color corrector for a composite color video signal
An improved color corrector is disclosed which is of the type that separates the color burst component from a color video signal and uses the color burst in a phase locked loop to generate a...
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4223338 |
Color television receiver and VTR system
In a color television system having a video tape recorder and a color television receiver which includes an automatic control circuit for automatically controlling color level and hue with a...
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4007485 |
Color video signal reproducing apparatus
Successive field intervals of a composite color television signal are respectively recorded on successive recording tracks which extend parallel to one another on a record medium such as a magnetic...
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3949414 |
Gain control device of video signal reproducing apparatus
A gain control circuit for a video signal reproducing apparatus provides a variable gain circuit in the reproduced video signal path and an amplitude detector circuit to which a pilot signal...
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3862355 |
HELICAL SCAN WIDE BAND TAPE RECORDER APPARATUS AND METHOD
A format particularly useful in a high quality video tape recorder for use in broadcast applications and other wide band signal applications such as data recording. A single mechanical structure...
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3852808 |
COLOR AMPLITUDE CORRECTION IN PLURAL TRANSDUCER SIGNAL PLAYBACK SYSTEMS
The arrangement corrects color amplitude errors in a video playback system which utilizes a plurality of transducers for recovering recorded information in sequential segmented manner from a record...
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3732361 |
COLOR VIDEO SIGNAL MAGNETIC RECORDING-REPRODUCING SYSTEM HAVING A FUNCTION OF OPTIMUM RECORDING CURRENT LEVEL SETTING
Disclosed is a system and method, applicable to color video magnetic recording and reproducing systems, for determining the optimum recording current for each head of a multi-head assembly to...
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3717721 |
AUTOMATIC CHROMA COMPENSATING SYSTEM
To compensate the chroma component of a color video signal produced by a playback apparatus having a plurality of magnetic heads, the amplitude of selected color burst signals derived from the...
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3717725 |
TELEVISION SIGNAL RECORDING SYSTEM WITH COLOR INFORMATION RECORDED ON A LOW FREQUENCY CARRIER AT REDUCED AMPLITUDE WITH RESPECT TO THE LUMINANCE INFORMATION
A standard color television signal which has a luminance signal component and at least two chrominance signal components is recorded with one head on a magnetic tape or other medium. The chominance...
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3716663 |
COLOR TELEVISION RECORDER-REPRODUCER SYSTEM
There is disclosed an automatic color amplitude and velocity error corrector for a color television recorder/reproducer system. Velocity errors which cause distortion in reproduced color video...
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3541237 |
CONTROL ARRANGEMENT FOR COLOR TELEVISION
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