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Color temperature correction method and projection system using same

A correction method and projection system technology, applied in the field of color temperature correction, can solve problems such as color coordinate deviation, achieve the effect of ensuring saturation and vividness, and ensuring accuracy

Inactive Publication Date: 2010-02-10
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, the calculated color coordinates will be different from the actual color coordinates, which will lead to deviations in the final corrected color coordinates

Method used

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  • Color temperature correction method and projection system using same
  • Color temperature correction method and projection system using same
  • Color temperature correction method and projection system using same

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Experimental program
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Embodiment Construction

[0023] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] Such as image 3 As shown, the projector of the present invention includes an optical machine 1, an optical-mechanical driving device 2, a calibration device 3, a first storage unit 5 and a second storage unit 6, and the testing device 4 can be arranged in the projector or separated from the projector. set up. The optical machine 1 here can also be subdivided into optical modules, DMDs and lenses. Each receiving channel of the projector (including VGA, DVI, video, HDMI, high-definition, etc.) is an input channel of the projector, which directly outputs the picture to the optical machine 1, and displays the image through the optical machine 1.

[0025] In a preferred embodiment of the present invention, each input terminal of the projector receives the input of an external signal source (such as a TV station signal, a DVD signal...

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Abstract

The invention relates to a color temperature correction method comprising the following steps: presetting white field target color coordinates and target gain values in a ray machine; receiving an input signal of each input end by the ray machine; measuring color coordinates of colors of the input signals and white field sample color coordinates by a measuring device; comparing the white field sample color coordinates with the white field target color coordinates; and regulating values of the white field sample color coordinates to be consistent with values of the white field target color coordinates. The invention also relates to a projection system using the color temperature correction method.

Description

technical field [0001] The invention relates to a color temperature correction method, which can effectively reduce the operation complexity of color temperature correction without losing the brightness of the base color, and ensure the accuracy and consistency of the white field color temperature, and maintain the vividness of the picture. Calibration method of the projector device. Background technique [0002] Projectors are divided into household projectors and commercial projectors. Commercial projectors generally display text information, so they have relatively low requirements for color and high requirements for brightness. In this way, even without color correction, home projectors have higher requirements on color and image quality, so the correction of color temperature, especially the correction of white color temperature, is more important. [0003] White point is also called white balance, which refers to the situation where red, green and blue are used to res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00H04N9/31H04N9/73
Inventor 董玉珍
Owner HISENSE VISUAL TECH CO LTD
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