Intelligent rear projection television wall and method for regulating and controlling color brightness uniformity thereof

Abstract

The invention provides a method for regulating and controlling the color brightness uniformity of an intelligent rear projection television wall in real time. The intelligent rear projection television wall is composed of a plurality of intelligent rear projection television units. Each intelligent rear projection television unit comprises a projection ray machine and a screen. Each projection raymachine is provided with an optical sensor configured to provide an optical sensing signal. The method comprises the following steps: providing a spectral measurement device for respectively obtaining a group of screen color brightness uniformity correction values and a basic color correction value of each intelligent rear projection television unit, each group of screen color brightness uniformity correction values comprising corresponding brightness correction values at different positions on the screen of the intelligent rear projection television unit; continuously performing compensatingby the projection light machine of each intelligent rear projection television unit according to the corresponding basic color correction value and the optical sensing signal so as to maintain the color of the intelligent rear projection television unit; selecting a first intelligent rear projection television unit from the plurality of intelligent rear projection television units, and setting the rest intelligent rear projection television units as second intelligent rear projection television units; and enabling the projection light machine of the first intelligent rear projection television unit to transmit each second intelligent rear projection television unit to perform brightness regulation and control according to the optical sensing signal from each second intelligent rear projection television unit so as to continuously maintain the overall screen brightness uniformity of the intelligent rear projection television wall.

Description

technical field [0001] The invention relates to a method for real-time regulation and control of the optical uniformity of an intelligent rear-projection video wall, in particular to an intelligent rear-projection video wall and a method for regulating its color and brightness uniformity. Background technique [0002] In order to achieve large-screen image display, it is the mainstream technology to complete the video wall by splicing multiple display devices. Since it uses multiple display devices to simultaneously display different blocks that constitute a single screen, the brightness and color of the display devices must be coordinated to allow users to view the video wall in a normal and comfortable manner; in other words, if If the brightness and color of the display devices of the TV wall cannot be coordinated, each display device will display images with different brightness and colors, causing users to clearly feel the incongruity of the overall picture when watchin...

AI Technical Summary

Problems solved by technology

Such technology can avoid manual adjustment of individual color uniformity, but it cannot overcome the problem of uneven brightness between display devices and at different positions on the screen of a single display; moreover, the above-mentioned method of color correction for light sources is also difficult to master Variations due to additional extinction and color shift caused by optically conductive components in the optical path

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