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7616314 |
Methods and apparatuses for determining a color calibration for different spectral light inputs in an imaging apparatus measurement
Methods and apparatuses for determining a color calibration for different spectral light inputs in an imaging apparatus measurement are disclosed herein. In one embodiment, for example, a method...
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7586544 |
Method and apparatus for testing lip-sync of digital television receiver
A lip synchronization test method for DTV receivers. The method includes the steps of: generating a digital audio stream having a frame index inserted therein and a video stream having a Transient...
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7460179 |
Adaptive image display
A display system may include an identifier configured to identify an image display condition associated with the display of an image produced by the display system, an apparatus configured to...
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7456908 |
Method of performing convergence calibration for a display
A convergence calibration method for a display includes generating a test pattern of similar width with respect to a sensor and expanding the area of the test pattern from one side of the sensor...
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7420591 |
Optical detector of projection television
An optical detector is provided. The optical detector allows an auto-convergence control to be effectively made by cutting off external light incident to an optical sensor for use in the...
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7391514 |
Colorimeter
A calorimeter for measuring a color of light includes a color sensing device, a suspension means and a counterweight. The suspension means suspends the color sensing device in an operative...
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7372571 |
Color sensing apparatus
A colorimeter method and apparatus is described. The colorimeter includes a plurality of sensors/filter systems with non overlapping spectral responses, adequate for providing data capable of...
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7365770 |
Video signal level display device
The present invention reduces a burden on an observer. A video signal level display device includes setting sections ( 24, 25, 26 ) for setting maximum effective values corresponding to R, G, and B...
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7317520 |
Method and apparatus for measuring brightness
An apparatus for measuring brightness transmitted by a light-emitting display unit of a laser telescope and observed by the user's eyes comprises a focusing unit ( 11 ), a sensor unit ( 12 ), a...
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7268913 |
Display measuring method and profile generating method
In order to stabilize a displayed color and to attenuate printing when measuring a color patch for preparing a color conversion profile, an accurate measurement is obtained by waiting for a certain...
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7265778 |
Visual display characterization
A method of characterizing a display having a plurality of color channels includes the steps of visually characterizing the nonlinearities of the display; determining luminance ratios of the color...
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7234863 |
Apparatus for measurement optical characteristic of a display panel
An ambient temperature control apparatus used for measuring ambient temperature. The apparatus has a bottom plate, a panel fitting apparatus, an external mask, and a temperature control device. The...
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7218358 |
Method and apparatus for calibrating color temperature of color display devices
A method and apparatus for calibrating color temperature of color display devices aims to calibrate output bases of RGB three original color lights of a color display device so that different color...
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7193662 |
Projector having alignment optics and electronics
A projector employing a linear array of light-emitting sources forms a super pixel in the form of a plurality of beams that are focused onto scanning optics that cause the beams to move across a...
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7136056 |
Image quality analysis method and system for a display device
An image quality analysis method and an image quality analysis system for a display device are provided. The image quality analysis method and image quality analysis system provides a quantitative...
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7092008 |
Remote color characterization for delivery of high fidelity images
The present invention provides a technique for providing color corrected images to a user over a network. The user's computer and its associated devices may be remotely calibrated and or...
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7090361 |
Bundled light based alignment and maintenance tool for projection systems
The present invention relates to projection systems, more particularly to a method for visualising test pattern grids in such a projection system. An array of adjustable, directed light sources is...
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7064831 |
Colorimeter with single cable low impact mounting system
A colorimeter that uses its flexible power/electronic cable as a mounting mechanism is disclosed. The colorimeter can be placed against a target screen, suspended by the cable, where the cable in...
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7012633 |
Color calibration method for imaging color measurement device
A color calibration method for an imaging color measurement device utilizes a detector array, a plurality of optical elements, and multiple instances of irradiation of the detector array for a...
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6958785 |
Method and apparatus for determining and correcting for illumination variations in a digital projector
The need is met according to the present invention by providing a method of correcting pixel by pixel variations in a display, the method including the steps of creating a defect map of pixel...
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6950109 |
Multi-spectral color correction
A system and method for performing color correction based on physical measurements (or estimations) of color component spectra (e.g. red, green, blue color component spectra). A color correction...
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6933967 |
Color reference system for display monitor
A color calibration system includes a visual display terminal (VDT), a color calibration sensor optically coupled to the VDT, and a computer processing unit (CPU) electrically coupled to the VDT...
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6927378 |
Apparatus and method for monitoring of cathode ray tube panel manufacturing to reduce CRT cost and improve performance and yield
A monitoring apparatus and method for measuring light output gradient of a faceplate panel includes a top plate having a center detector and a plurality of corner detectors mounted along a major...
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6909468 |
Positional difference correcting apparatus between two-route videos
Received videos through A and B routes are inputted in first and second variable devices and then delayed by a first and a second frame memory by one frame to be inputted in a comparator....
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6885369 |
Method and apparatus for acquiring luminance information and for evaluating the quality of a display device image
A method for evaluating the quality of an image, for extracting a luminance gradient displayed on a display device and for evaluating local luminance unevenness caused therein. The method includes...
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6850245 |
DISPLAY CHARACTERISTICS RECOGNITION APPARATUS, DISPLAY CHARACTERISTICS RECOGNITION PROGRAM STORAGE MEDIUM, COMPUTER SYSTEM, DISPLAY CHARACTERISTICS ADJUSTING APPARATUS AND DISPLAY CHARACTERISTICS ADJUSTING PROGRAM STORAGE MEDIUM
A display characteristics recognition apparatus has a color chart data output unit outputting a color chart data representative of a predetermined color chart to a display unit, a color name input...
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6771307 |
Image calibration device and image calibration method
In an image calibration device 10, a calibration pattern is projected onto a screen 4 from each projector 3 under control of a personal computer or other calibration device 10 a , pictures...
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6753907 |
Method and apparatus for automatic keystone correction
The present invention provides automatic correction of any distortions produced when computer projection displays are misaligned with respect to the projection surface (such as keystoning)....
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6714670 |
Methods and apparatuses to determine the state of elements
A methods and apparatuses are disclosed for determining the state of elements in an image. The elements can be arranged in any regular pattern, such as a matrix of LCD display elements. The state...
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6671003 |
Automated calibration in a projection display apparatus
A method of operating a photo sensor in a projection display device comprises the steps of, illuminating the sensor with a projected image. Detecting a signal from the sensor responsive to the...
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6618076 |
Method and apparatus for calibrating projector-camera system
The present invention enables a user to automatically calibrate a projector-camera system to recover the mapping from a given point in the source (pre-projection) image and its corresponding point...
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6606130 |
Projection video display with multiple photo sensors
A projection television display apparatus comprises a display device with an image formed for projection and a display screen for receiving the projected image. A plurality of photo sensors are...
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6606116 |
Methods and apparatus for assessing quality of information displays
Techniques for quantitatively assessing the visual quality of information displays are described. A group of flat panel displays are tested to produce quantitative visual test data to allow an...
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6600468 |
System for measuring modulation transfer function and method for evaluating image quality of color liquid crystal displays using the system
A method for evaluating the image quality of a color liquid crystal display (LCD), and a system for measuring the modulation transfer function (MTF) for use in the evaluation of the image quality....
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6507360 |
Method of manufacturing a cathode ray tube, in which a display screen is inspected
The display screen of a cathode ray tube is inspected. The arrangement with which the display screen is inspected comprises an adjustable mirror arrangement and an adjustable focal lens. By means...
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6483537 |
Apparatus and method for analyzing projected images, singly and for array projection applications
An apparatus and method for analyzing the brightness characteristics of a projected image and using the analyzed characteristics to improve the appearance of the projected image is disclosed. In...
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6452627 |
Calibration pattern display system, and a system and method for calibrating a display characteristic measurement apparatus
A calibrating system of a display characteristic measurement apparatus includes a calibration pattern display unit for displaying a calibration pattern at substantially the same luminescence...
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6388713 |
Image display apparatus, and method to prevent or limit user adjustment of displayed image quality
A high definition display unit which demodulates, decodes, and processes in relation to chroma and displays a television signal in which a PI (picture) signal and an SI (service information) signal...
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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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6310645 |
Method and apparatus for measuring characteristics of a communication signal modulated with a composite video signal without synchronizing to the signal
A method and apparatus for measuring a characteristic of a communication signal modulated with a composite video signal without the need for a synchronizing device. Samples are taken of an...
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6285397 |
Alignment of cathode ray tube video displays using a host computer processor
A system for automatically aligning video images on display devices such as cathode ray tube (CRT) monitors that use the processor and memory of a host computer to implement the alignment process....
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6262766 |
Method for assessing the quality of a television image
A method assesses the quality of a television image. In diversity reception installations including several receivers, it is necessary to establish a criterion for selecting the receiver with the...
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6163377 |
Colorimeter
A colorimeter capable of calibrating color monitors, whether having cathode ray tube or liquid crystal (LCD) displays, is provided by a photometric array of photodetector and optical filter pairs....
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6140809 |
Spectrum analyzer
A received signal is converted in a frequency converter, an output from which is again frequency converted. The second converted output is detected by a detector and then converted into a digital...
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6122002 |
Device and method for determining black point
The standard brightness region is displayed with input values of zero. The comparison brightness region is displayed with an input value which is variable in the range of 0 to 255. The standard...
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6111243 |
Multi-axis photometric inspection system and method for flat panel displays
A system and method for inspecting an image-producing display according to a predetermined footprint is disclosed. The system includes a platform fixed to a first multi-axis positioning unit for...
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6067166 |
Apparatus for mounting an electro optical measuring device, especially a colorimeter on a monitor
A mounting for a colorimeter enables it to make measurements of light emanating from a color monitor screen without affecting the colors produced by the screen or allowing the entry of ambient...
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6061102 |
Automatic shading in an LCLV projector
A process for implementing shading corrections in a video projector. The process selects a color to be shaded, and then sets a projector video level at a selected high video level. A target...
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6058221 |
Electron beam profile measurement method and system
In a method of measuring electron beam profile in an electronic display device, a matrix of video dots is displayed on a display screen of the electronic display device, each of the video dots...
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5940124 |
Attentional maps in objective measurement of video quality degradation
Attentional maps that reflect the subjective view of an observer to the effects of degradation in a video image are used in the objective measurement of video quality degradation. The observer...
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