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Class 348/643 - Color killer


Subclass of Class 348 - Television
Definition: Subject matter including apparatus which disables the chrominance
No. of patents: 57
Last issue date: 12/20/2011


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NumberTitleIssue Date
8081260Color killer circuit
There is provided a color killer circuit comprising a burst amplitude detection unit that detects an amplitude of a color burst; a delay unit that stores, delays, by a predetermined period of time, and outputs the detected amplitude; a subtractor that calculates a d...
12/20/2011
8031269Chroma killer detection circuit
In the chroma killer detection for detecting the abnormality of the burst signal, in addition to the circuits (1004, 1005, 1006) for detecting the states of the components of the burst signal, which circuits are for selecting the cos θ data of the burst sign...
10/04/2011
7250985Color demodulation circuit
A color demodulation circuit that can complement an unstable state of an output from an ACC circuit and can obtain stable color-difference outputs, regardless of a burst signal in a chrominance carrier signal. Normally, a selector connects an output from a first mul...
07/31/2007
7173673Expanded switching of video/S-video signals by auto-sense apparatus designed to initiate switching of a different type of video signal and apparatus for emulating one type of signal by another type of signal to initiate said switching
A video switching system wherein an integrated circuit designed to switch video signals responsive to a first type of signal is used to switch video signals of a second type of signal which is adapted to emulate the first type of signal. Circuitry for adapting the s...
02/06/2007
7110660Video apparatus process for a video apparatus and video recorder
A video apparatus comprises a correction circuit for delaying a luminance stream in a digital stream. The correction circuit has a demultiplexer, a line buffer and a multiplexer to achieve this. This construction enables compensation of the luminance 2H-delay of con...
09/19/2006
7075589Color killer adjustment device
A conventional method to determine an onset point of a color killer function by design of the external circuit requires physical work to change external parts and their component values varying from one model to another. Therefore, an alternative method to adjust th...
07/11/2006
6950147Apparatus and method for discriminating color format
An apparatus discriminates a color format. The signal processing paths separate a luminance signal and a color signal from a broadcasting signal based on a plurality of color formats. The direct signal path provides a direct output of the broadcasting signal without...
09/27/2005
6947060Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method
An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance...
09/20/2005
6888579Method and system for tint control for component video signals
A method and system are provided for controlling tint of component video signals. The system includes a first input for receiving a first component video signal; a second input for receiving a second component video signal; circuitry including a first differential a...
05/03/2005
6088066System for temporarily displaying monochrome images on a color display
The system for viewing color video "automatically" enables and disables a color killer circuit (monochrome/color mode) so that the color video may be viewed in monochrome. Enabling and disabling the color killer circuit for the current system may be accom...
07/11/2000
5982975Video signal copying apparatus
A video signal copying apparatus for copying a signal recorded on a recording medium onto other recording media is provided. The video signal copying apparatus includes a first filter for blocking a color signal and passing a luminance signal of a video s...
11/09/1999
5953072Apparatus for automatically switching broadcasting systems and a controlling method thereof
An apparatus for automatically switching broadcasting systems and controlling method thereof controls switching between an NTSC system and a PAL-M system according to the detected number of color killer signals. A stabilized broadcasting system is set to ...
09/14/1999
5831680Color signal processing circuit capable of processing PAL/NTSC color television signals which prevents image deteriorization caused by chromatization
In a color signal processing circuit capable of processing a PAL/NTSC color television signal, in order to prevent an image deterioration caused by chromatization when a PAL signal is received in an NTSC signal receiving mode, there is provided a gate con...
11/03/1998
5661530Television circuit utilizing color burst signal
A television circuit (10) according to the invention includes a multiplier (12), and a voltage signal (V1) is outputted from an LPF (22) in accordance with the presence or absence of a color burst signal which is to be inputted to the multiplier (12). A r...
08/26/1997
5654769Digital color control and chroma killer device
An automatic color control and chroma killer circuit 3 and video processing system is provided that is capable of controlling an amplitude of a color signal and of performing a killer function with a simple construction without using a divider and/or vert...
08/05/1997
5627599Chrominance signal processing apparatus for digital television receiver
A chrominance signal processing apparatus for a digital television receiver, comprising an A/D converter for converting a transmitted analog composite video signal into a digital signal in response to a clock frequency, a luminance/chrominance separation ...
05/06/1997
5508741Image pickup apparatus with plural filters jointly receiving image pickup signals to provide luminance and contour-related information
In an image pickup apparatus having a low-pass filter for detecting a luminance component of an image pickup signal and a band-pass filter for detecting a contour component of the image pickup signal, a digital system for performing a digital signal proce...
04/16/1996
5452016Combined digital color control and chroma killer device
An automatic color control and chroma killer circuit 3 and video processing system is provided that is capable of controlling an amplitude of a color signal and of performing a killer function with a simple construction without using a divider and/or vert...
09/19/1995
5353066Method for preventing the deterioration of picture quality in a video processor and circuit thereof
A method and circuit for preventing the deterioration of picture quality in a video processor is disclosed in which, when an input color video signal is input, a clock signal for a combfilter is locked with a phase-locked loop (PLL) by a burst signal and ...
10/04/1994
5287197Signal demodulation device
A signal demodulation device includes a change point sensing circuit which senses a change point of an envelope of a DPSK signal, and a range setting circuit which generates a gate pulse corresponding to a period in which the DPSK signal cannot be changed...
02/15/1994
5267024Multiple systems adaptive television receiver
A multiple systems adaptive television receiver which is able to receive different system television signals such as the PAL system, the NTSC system, the SECAM system including a chrominance signal and a unique ID signal of the different television signal...
11/30/1993
5119177Automatic 3-mode switching circuit of a color television set
An automatic 3-mode switching circuit of a color television set for automatically changing into a suitable system according to broadcasting signals of the broadcasting systems, i.e., PAL-N, NTSC, PAL-M systems, which comprises a color killing section, a c...
06/02/1992
5032913Electronic endoscope system equipped with color smear reducing means
An object being frame-sequentially illuminated by beams of illumination light in different wavelength ranges is imaged by an imaging element of an electronic endoscope. A time-serial image signal is subjected to signal processing to display a color pictur...
07/16/1991
4785346Automatic color saturation controller
An automatic color saturation controller (ACC) of synchronous detector type provides a high killer sensitivity at low field strength but a low chrominance signal stability at high field strength because the chrominance signal gain is controlled without be...
11/15/1988
4758879Circuit arrangement for controlling an oscillator in a colour television receiver or a video recording and/or reproducing apparatus having a phase alternating subcarrier.
The invention relates to a circuit arrangement for controlling an oscillator. In a first phase-comparator circuit a burst signal whose phase alternates in a predetermined sequence is compared with a first oscillator signal. The output signal generated by ...
07/19/1988
4746969Video signal processing device for line sequential signals
A video signal processing device rearranges line sequential signals included in a video signal into line simultaneous signals by detecting the kinds of information carried by them, respectively, for horizontal scanning periods; and adequately inhibits the...
05/24/1988
4691226Color-television receiver with at least one integrated circuit for processing the digitized composite color signal
A phase-locked loop for the color subcarrier signal in a television receiver is opened for non-sychronizable signals and the voltage controlled oscillator oscillates on a predetermined frequency. The lock in characteristic of the phase-locked loop is ther...
09/01/1987
4668975Color solid state image pick-up device
A color solid state image pick-up device in which a color filter array is arranged so as to correspond to each picture element of the solid state image pick-up elements and the output from the solid state image pick-up elements is processed so as to obtai...
05/26/1987
4617587Recovery system for a control loop
Non-inverting amplifier, with bandpass filter in regenerative feedback path, forms color reference oscillator in a color TV receiver. Phase shift circuit, responsive to an oscillator output, supplies signals to a first phase shifted signal amplifier, whic...
10/14/1986
4609938Digital TV receiver with digital video processing circuit
A digital TV receiver includes an A/D converter circuit for converting an analog video signal to a digital video signal, a signal separator circuit for separating a digital chroma signal and a digital Y signal from the digital video signal, a color killer...
09/02/1986
4546377Circuit arrangement for processing color television signals
A circuit arrangement for processing color television signals incorporated in a multi-mode type color TV receiver which is capable of receiving TV signals processed by different television systems such as NTSC and PAL systems. The circuit arrangement for ...
10/08/1985
4517588Color solid state image pick-up device
A color solid state image pick-up device in which a color filter array is arranged so as to correspond to each picture element of the solid state image pick-up elements and the output from the solid state image pick-up elements is processed so as to obtai...
05/14/1985
4509016Signal detecting circuit
A signal detecting circuit detects the presence in an input signal of a component of a predetermined frequency fp. The circuit includes a sampling arrangement for sampling the input signal at predetermined times separated by a sampling period 1...
04/02/1985
4488170Synchronizing circuit for a television receiver
A synchronizing circuit arrangement for a television receiver having an oscillator which generates a clock signal the frequency of which is substantially higher than the line frequency and having a frequency dividing circuit which derives signals of the l...
12/11/1984
4477831Color gain control circuit
A color gain control circuit for use in a color television receiver set comprises manual and automatic gain controls which are connected in cascade fashion between a power source and a reference potential. The automatic gain control is positioned upstream...
10/16/1984
4415919Color signal processing circuit of color television receiver
In a color signal processing circuit having first and second chroma amplifiers, a burst amplifier for extracting a color burst signal from an output signal of the first chroma amplifier, a synchronous color killer detector for detecting the color burst si...
11/15/1983
4413274Color synchronizing circuit
A color synchronizing circuit comprises a phase locked loop which includes a voltage controlled oscillator including a ceramic vibrator. Phase comparison is made of an intermittent color burst and the output of the voltage controlled oscillator and the ph...
11/01/1983
4396939Chromakey effect apparatus
A chromakey effect apparatus including a color-killing subcarrier-generating circuit which generates a color-killing subcarrier which completely kills color even when the hue or saturation of the chromakey area is changed and which also kills the color wh...
08/02/1983
4357628Video disc player with burst remover
A video disc player includes color burst responsive processing circuitry. A burst killer effectively removes burst from the player output when reproducing monochrome program material whereby an improved quality monochrome picture may be obtained from a co...
11/02/1982
4298884Chroma amplifier and color killer
A chroma amplifier and color killer are described for use in a color television receiver. In a preferred embodiment, the chroma amplifier comprises a first pair of emitter-coupled transistors receiving a current source which has a D.C. operating component...
11/03/1981
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