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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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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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7050121 |
Method and device for compensating picture quality of projection type display
Device and method for compensating a picture quality of a projection type display, the device including a screen for displaying a picture projected from outside of the screen, a video processing...
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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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6912017 |
Display device for displaying digital input image data using different filter segments for the lower and higher order bits
There is disclosed a display device using a color wheel having a color filter Cw, in addition to normal color filters corresponding to the three primary colors. The filter Cw has almost flat...
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6909463 |
Camera having verification display and white-compensator and imaging method
In a camera and method, a white-compensator propagates neutral light at a preset color temperature independent of a displayed electronic image. The camera has a body and an electronic imager...
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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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6636274 |
Image display device
When an anomaly occurred in an optical system or light sources of a rear projection TV in which laser beams are employed as a light source, the anomaly is detected by sensors, the detected anomaly...
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6633341 |
Luminance correction system used in a vision system
An intelligent luminance correction system is used in a vision system. The vision system has a video decoder, used to receive a video signal and decode the video signal into three basic components...
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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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6356301 |
Method and apparatus for landing adjustment jig calibration check
A method and an apparatus that verify the correct operation and calibration of a wobbling coil CRT monitor landing adjustment jig. The video test signal and the wobbling coil signal are...
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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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5926562 |
Image processing method using reference values to determine exposure state
A film image, which is taken into the developed photographic film, is picked up, and a reference maximum value and a reference minimum value of an image signal are determined by the image signal...
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5793441 |
Method and apparatus for measuring illumination uniformity of a liquid crystal light valve projector
A system for measuring the illumination uniformity of a liquid light value (LCLV) for a LCLV projector includes a projection device including a first LCLV. The projection device reflects light from...
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5724071 |
Depth image display on a CRT
A CRT display system includes a CRT with a lenticular material placed upon the outward face of the CRT. The system further includes a sensing device in the field of view of the CRT and control...
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5689311 |
After image reducer
A method and apparatus for reducing after images in motion video display. In the present invention, an intensity scaled image of a previous frame or set of frames is subtracted from the present...
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5635993 |
Apparatus and method for controlling white balance of a cathode ray tube projector
An input signal is input to a detector and a synchronizing frequency of the input signal is detected by a frequency detector. Then, the number of the horizontal lines per vertical period of the...
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5512961 |
Method and system of achieving accurate white point setting of a CRT display
A system and method achieve and maintain an accurate white point setting of a CRT display in a computing system. The CRT is initially calibrated by individually driving the individual color...
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5510851 |
Method and apparatus for dynamic purity correction
The invention pertains to a method and apparatus for performing dynamic purity correction to insure that color purity is maintained across the face of a color monitor. The monitor displays a...
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5452019 |
Projected image displaying apparatus and a method of correcting color unevenness therein
A chromaticity meter measures chromaticity of light output for each of picture elements selected. Calculated from the measurement is corrective data on each of RGB colors, which in turn used to...
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5315378 |
Gamma correction and white balance adjustment method and apparatus for projection display
A gamma correction and white balance adjustment device has a calculator for calculating brightness target values expected to produce on a screen in response to calculated input signals to be...
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5258828 |
Color CRT drive apparatus having automatic white balance adjusting circuit and CRT display
A picture tube drive apparatus for driving a color picture tube. The picture tube drive apparatus comprises a video output circuit which receives video signals, amplifies them and outputs the...
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5231481 |
Projection display device with negative feedback loop to correct all the faults of the projected image
A projection display device is provided with a negative feedback chain designed to correct all the faults of the projected image, said faults resulting as much from the projection tubes and from...
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5181103 |
White balance adjusting system for a color television system
A white balance adjusting system for a color television system has three CRTs for projecting beams of three primary colors, and a color control circut for controlling outputs of the three CRTs....
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4962418 |
Color picture display apparatus
In a color picture display apparatus for monitoring colors of a picture displayed on a display such as a CRT based on picture signals picked up by a imaging camera, in which a signal processor...
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4930004 |
Automatic level adjusting system for a television receiver
An automatic level adjusting system for a television receiver which is suitable as its automatic white balance adjusting circuit. In the manufacturing-process of the television receiver, desired...
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4746970 |
White uniformity correcting apparatus for a three-color display wherein correction signals are stored in a memory
A dynamic white uniformity correcting apparatus for a three-color display for displaying a color picture in response to three primary color signals and includes a cathode ray tube which has means...
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4742387 |
Method and apparatus for automatically establishing a color balance of a color television monitor including an ambient light sensing and data compensating function
An apparatus for automatically establishing a color balance for a color television monitor includes a sensor device which is separably attached to the screen of the monitor to detect the brightness...
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4700218 |
Automated system for adjustment of the white balance in a signal displayed on the screen of a color cathode ray tube
An automated system for adjustment of the white balance in a signal displayed on the screen of a color CRT includes a device attachable to the screen of a color CRT for detecting a first value for...
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4160264 |
Matrix compensator for color video signals
A video color signal compensator monitors, on a generally continuous basis the signal levels for three primary colors, and for certain operating zones introduces matrixing to drive the overall...
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3573352 |
COLOR TONE ADJUSTMENT FOR COLOR TV RECEIVER
This specification discloses a color television receiver wherein the white balance controlling reference color illumination occurring in a portion of the fluorescent screen is passed through three...
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3524013 |
STABLE MONOCHROME BALANCE CIRCUIT FOR SINGLE GUN DISPLAY TUBE
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3447023 |
ELECTRON TUBE FOR BOTH TRANSMISSION AND RECEPTION OF VISUAL INFORMATION
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3388283 |
Electron tube device for image transmission and reception
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3385995 |
Electron tube devices for image transmission and reception
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2924649 |
Adaptation of standard color signal for use with vertical strip color tube
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