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7489337 |
Method and system for synchronizing colorimetric rendering of a juxtaposition of display surfaces
A method for making uniform the colorimetric rendering of a display surface including several adjacent display screens ( 10 a , 10 b ), comprising for each pair of adjacent screens ( 10 a, 10 b )...
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7415153 |
Color naming, color categorization and describing color composition of images
The invention provides methods, systems and apparatus for assigning color names to individual image pixels, and generating verbal description of color composition in images, suitable for a wide...
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7339619 |
Image pickup system and image processing program for performing correction on chroma signal
A color signal of a primary color or a color signal of a complementary color is converted from a CCD to signals in a color space having an intensity, a hue and a chroma. Tone conversion is...
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7336298 |
Video signal level monitoring apparatus
A video signal level monitoring apparatus which monitors the level of a video signal, said apparatus comprises means for inputting a first color difference component (Cb) and a second color...
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7312815 |
Method and apparatus for color calibration
The present invention provides a method and an apparatus for color calibration for calibrating an input color. A target color represented by a first coordinate pair (X 1 , Y 1 ). An input color,...
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7136092 |
Method and apparatus for testing video chroma quantization
A method for testing the chroma performance of a digital rendering integrated circuit includes generating a video test signal where the video test signal has a constant luma amplitude, constant...
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7133148 |
Digital camera for image device calibration
The invention is directed to an apparatus for calibrating an output of an image output device, comprising an image input device configured to image an output of the image output device; and a test...
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7023471 |
Video quality assessment with test video sequences
A test video sequence for testing quality loss in processed video. When video clips are transmitted, compressed/decompressed, or otherwise processed, measuring the loss of quality that occurs...
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7023470 |
Self-testing video display devices and method of use thereof
A self-testing video display device and method of use. A video display test program is stored in a video processing unit inside a video display device. The test program includes a plurality of...
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6757010 |
Method and system for calibrating color correction instructions between color correction devices
Systems and methods for correlating color correction instruction between two color correcting devices are disclosed. The method includes performing a nulling test on a representation a first device...
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6747688 |
Apparatus and method for reproducing real colors in a video system
The present invention relates to an apparatus and a method for reproducing real colors of a video system. The apparatus comprises a video signal generating device for storing, in an internal...
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6744464 |
Apparatus and method for real-time testing/adjusting of television picture colors
This invention relates to an apparatus and method for real-time testing of television picture colors. It can conduct real-time testing and adjusting of colors at various pixels to make tree and...
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6700627 |
Method of characterizing a video display
A method of characterizing a video display, including the steps of providing a mathematical model of the display that relates code values to luminance output of the display, the model having a...
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6556238 |
Color-bar signal generation unit compatible with plurality of television signal formats
A color-bar signal generation unit compatible with a plurality of television signal formats is provided. The color-bar signal generation unit in accordance with the present invention includes...
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6552755 |
Method for measuring convergence by using a mixed color pattern
A method for measuring a convergence of color CRT uses a combination pattern among Red(R), Green(G) and Blue(B) colors on a white pattern when measuring convergence by using a color camera so that...
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6538242 |
Method of measuring spectral responsivity characteristic of image pick-up device and method of configuring imaging data
A spectroscope ( 2 ) spectrally separates a light from a light source ( 3 ) and outputs the separated light from an emitting terminal ( 6 ) thereof. An image pick-up device ( 1 ) having a...
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6330026 |
Color testing system for testing color output of a display device
The present invention provides a color testing system for testing intensities of color output from a screen of a display device. The color testing system comprises a reading probe for reading color...
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6292231 |
Color signal generation circuit
A reference signal having either twice or four times the frequency of a color burst signal (2fsc or 4fsc) is divided into a plurality of divided signals, each having the same frequency as that of...
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5889835 |
Method and system for testing a transmission line in a non-addressable network for continuity
A method and system for testing the continuity of a transmission line in a non-addressable network. A method and system in a communications service environment are provided, the environment...
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5561459 |
Automatic profile generation for a self-calibrating color display
A method and system for formatting characteristic CRT information into a standardized format to provide a dynamic CRT characteristic profile to enhance presently used methods of recalibrating CRTs...
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5455620 |
Automatic generation of vector reference graticules
A system for automatic generation of vector reference graticules for a vectorscope display acquires the active video portion of a video signal that includes a color bar test signal. The values for...
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5440340 |
Device for measuring characteristics of a color cathode ray tube
A CRT measurement device includes an image pickup device for producing an electrical image signal with respect to a light image displayed on the CRT, an optical system having a movable focusing...
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5404164 |
Process and device for convergence measurement in a color picture tube
A color TV convergence measurement device and process for measuring a position of an electron beam of a multiple-beam color picture tube relative to a field of view of an image converter, in which...
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5392394 |
System for generating different kinds of digital video signals
A system with a small scale hardware construction of a comparatively small memory capacity generates many kinds of digital video signals. The digital video signal generator includes at least one...
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5381349 |
System for calibrating a color display to enable color-matching
A color display screen displays a calibration color patch and a comparison color patch. The calibration color patch manifests a calibration color of a predetermined intensity, and the comparison...
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5365275 |
Method and apparatus for generating PAL video signal by digital processing
Disclosed is a method and apparatus for highly stably and accurately generating a PAL video signal by digital processing. The method and apparatus comprise generating a basic clock having a...
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5345263 |
Computer color monitor testing method and portable testing apparatus
A computer color monitor portable testing apparatus includes a programmable microprocessor storing a software program and producing timing and control signals in response to operation of the...
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5247350 |
Method and apparatus for testing video
The chroma circuits of a VCR are tested by replacing the video signal from the video heads of the VCR with a composite signal from a test pattern signal developed by a test instrument, which...
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5194936 |
Circuit for selectively converting a color bar pattern
A circuit for selectively converting a color bar pattern, comprising a switching means for selectively converting the circuit to the EIA mode or SMPTE mode, a line selecting means for counting the...
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5159436 |
Technique for detecting color misregistration and misconvergence in video color displays and cameras
A blinking set of displayed collinear elements alternating in color allows simple, rapid, and accurate determination of color misregistration or misconvergence in color television video displays...
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5119178 |
Video camera with manual color balance adjusting option
A video camera whereby the photographer can switch from an automatic to a manual adjustment mode. In the manual mode a color bar chart on a lens cap is pictured on part of the viewfinder of the...
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5077600 |
Self-inspecting convergence measuring apparatus
A convergence measurement apparatus for a color CRT comprising a light sensor which is placed on the face of a CRT to be tested, a CPU, and a pattern generator which causes a plurality of...
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5038210 |
Test pattern signal generator for producing zone plate and other test patterns
A test pattern generator for digital television signals produces a zone plate pattern on an orthogonal pixel raster generated by pixel and line counters. The counter outputs are supplied to...
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4949165 |
Method and apparatus for testing and checking the criteria of a key signal decoder from a chromakey mixer
A test pattern generator provides a test pattern signal timed for insertion in the foreground signal of a chromakey mixer to occupy the area of particular shape in any desired part of a monitor...
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4914506 |
Component color bar alignment test signal
A component color bars alignment test signal for calibrating a component picture monitor having as inputs a luminance component and two orthogonal chrominance components has a standard set of color...
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4879590 |
Color bar and audio signal generator
Modulators for producing a composite video signal comprising composite video color bars of one volt, peak to peak, of the United States NTSC standard type, are described. The modulators include an...
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4772948 |
Method of low cost self-test in a video display system system
In a color graphics display system, video analog self-test hardware for testing the system elements between the frame buffer and the CRT display monitor is provided including a bi-directional data...
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4758877 |
Color bar autofind
A method for automatically finding color bars within a television video signal checks for a black burst at the end of a horizontal video line to determine the appropriate color bar standard for...
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4442428 |
Composite video color signal generation from digital color signals
A 3.58 MHz subcarrier signal and a 14.318 MHz clock signal are applied to three flipflops (50, 52 and 54) in such a manner that there appears on the output terminals (Q and Q) of the latches...
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4214258 |
Portable television camera and tape recorder combination
A portable television camera and tape recorder combination wherein, prior to recording a scene, the signal of a bar generator is first recorded on a tape for test and reference purposes. After the...
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4201932 |
Color purity adjusting method
To adjust for color purity for a cathode ray tube, an auxiliary magnetic field magnetizes metallic components including the metal shadowmask. A remanent magnetic field is created upon removal of...
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4149178 |
Pattern generating system and method
A pattern or test signal generating system and method is disclosed that is particularly well suited for servicing of T.V. receivers and the like. The system provides a series of individually...
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4093960 |
Test signal generating system and method
A test signal generating system and method is disclosed that is particularly well suited for servicing of television receivers and the like. A plurality of system outputs are produced that may be...
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4089026 |
Color bar generator
The invention provides an apparatus for producing video frequency color value signals which correspond to a desired arrangement of vertical or horizontal color bars on a television screen. In the...
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4069500 |
Arrangements for testing color television systems
A repetitive cyclic test signal representing constant chrominance with changing phase, changing chrominance with constant phase, and changing chrominance with changing luminance is coupled through...
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3978520 |
Magnetic head cleaning tape and method
Magnetic heads of color video tape recorder (vtr) machines are cleaned without harmful abrasion by means of a novel magnetic head cleaning tape carrying a color bar signal. Abrupt appearance of the...
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3804531 |
COLOR ANALYZER
A color analyzer for measuring a color synthesized by the additive mixture of primary colors, each having an arbitrary but constant relative spectral energy distribution. The color analyzer has a...
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3634612 |
IDENTIFIER CIRCUITS FOR COLOR-BAR-TYPE TEST GENERATORS
A color-bar-type test apparatus provides a signal which is processed by color television receiver to provide a plurality of different colored vertical bars on the face of the picture tube. The...
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3623816 |
SYSTEM FOR MEASUREMENT OF RELATIVE COLOR INTENSITIES
A portable meter for tracking any two colors of light emitted from a color cathode-ray tube at all brightness settings includes first and second light-dependent resistors connected in two arms of a...
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3617626 |
HIGH-DEFINITION COLOR PICTURE EDITING AND RECORDING SYSTEM
There is disclosed herein an electronic system for the production of high-definition color motion pictures for theatrical and television use. The system employs digital video techniques wherein...
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