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Projection picture light reflection compensating method and projection device

A compensation method and technology of a projection device, which are applied to parts of color TVs, parts of TV systems, TVs, etc., can solve the problems of picture contrast drop, hue shift, contrast drop, etc.

Inactive Publication Date: 2011-04-20
ACER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the actual situation is that the projected picture will be affected by various light pollution around it (such as eye lights), which will lead to a decrease in contrast and a shift in the overall color temperature. If the projected background is not a white curtain or wall, the background light Absorbing reflectance will also cause the contrast of the picture to drop and the color shift

Method used

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  • Projection picture light reflection compensating method and projection device
  • Projection picture light reflection compensating method and projection device
  • Projection picture light reflection compensating method and projection device

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Embodiment Construction

[0024] In order to allow users to obtain better viewing quality, the present invention places light sensors around the projection device or the user to detect the spectrum of the reflected light from the projection screen that the user's eyes touch, and analyze the current light pollution accordingly. degree, the absorption reflectance of the projected background to light, etc., and inform the projection device of the analysis results, so as to perform corresponding output corrections, so that the reflected light spectrum received by the light sensor can be as close as possible to the quality of the original picture. In order to make the content of the present invention clearer, the following specific examples are given as examples in which the present invention can actually be implemented.

[0025] figure 1 It is a block diagram of a projection device for projecting pictures according to an embodiment of the present invention. Please refer to figure 1 , the projection devic...

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Abstract

The invention provides a projection picture light reflection compensating method and a projection device. The projection picture light reflection compensating method comprises that: the projection device projects a preset picture, detects the spectrum of the light reflected by the preset picture, compares the spectrum of the reflected light and the original spectrum of the preset picture and regulates the light characteristic value of the projected preset picture to compensate for the difference between the detected spectrum of the reflected light and the original spectrum.

Description

technical field [0001] The invention relates to a light compensation method and device, and in particular to a light reflection compensation method and a projection device for projecting pictures. Background technique [0002] With the development of projection display technology, projection systems and equipment have developed significantly in recent years. The principle of a projector is similar to that of a slide or a slide, all of which use a high-brightness light bulb as a light source to project the picture onto a white curtain or wall. In terms of technical principles, projectors currently on the market can be divided into cathode image tube (CRT) projectors, high-temperature polysilicon (Polysilicon) transmissive liquid crystal displays (commonly referred to as liquid crystal projectors), and digital light source processors ( Digital Light Processing, DLP) projectors and other three categories. [0003] Among them, the liquid crystal projector can be made quite lig...

Claims

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Application Information

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IPC IPC(8): H04N5/202H04N5/74
Inventor 李建纬陈信宇
Owner ACER INC