Colour changing device and method for multi-primary colours type displaying equipment

A display device and color conversion technology, applied in static indicators, cathode ray tube indicators, color signal processing circuits, etc., can solve problems such as complex calculation processes

Inactive Publication Date: 2007-11-07
SOUTHEAST UNIV
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  • Abstract
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Problems solved by technology

This method improves the continuity of the control signal, but it needs to find the intersection points of the isoluminance surface and each edge first, the processing process is carried out on the plane, and the calculation process is complicated

Method used

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  • Colour changing device and method for multi-primary colours type displaying equipment
  • Colour changing device and method for multi-primary colours type displaying equipment
  • Colour changing device and method for multi-primary colours type displaying equipment

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Embodiment Construction

[0048] Further description is given below with reference to the accompanying drawings.

[0049] The processing means receives image data RGB data (sub-pixel digital input values ​​Ri, Gi, and Bi) from the image data holding section. It converts sub-pixel digital input values ​​Ri, Gi and Bi into sub-pixel digital output values ​​Ao, Bo, Co and Do, and outputs these data to the display driver.

[0050] A color conversion device for a multi-primary display device includes:

[0051] Linear conversion unit 100: convert the input signal to a linear space to obtain a digital input value Ri of a red sub-pixel, a digital input value Gi of a green sub-pixel, and a digital input value Bi of a blue sub-pixel of the input signal in the linear space ;

[0052] Signal conversion unit 110: for converting the digital input value Ri of a red sub-pixel, the digital input value Gi of a green sub-pixel, and the digital input value Bi of a blue sub-pixel of the input signal into the standard col...

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Abstract

A color conversion device used on multi-primary color display unit consists of a linear conversion unit for converting input signal into linear space to obtain digital input value R and G as well as B of red sub-pixel and green sub-pixel as well as blue sub-pixel on input signal at linear space, signal conversion unit for obtaining video signal ABC, calculation unit for obtaining grey scale point with the same brightness as video signal according video signal ABC and for judging whether video signal ABC are over range being presented by multi-primary color or not as well as for making grey scale point ratio be zero if it is.

Description

technical field [0001] The present invention relates to an image processing device, and more particularly, to a method and device for expanding the image color gamut of an output image in an image output device. Background technique [0002] With the rapid development of display technology, people's requirements for image quality are getting higher and higher. The traditional three-primary color system limits the reproduced colors to the triangle formed by the three primary colors, which can no longer meet people's growing requirements for image quality. In order to better reproduce the colors of the natural world, a multi-primary color system is adopted to reproduce the colors of the natural world with multiple primary colors, and the color gamut is polygonal. New primary colors can be obtained by designing new color filters, phosphors, etc. But first, the received three-primary-color original signal must be converted into a multi-primary-color digital signal for output. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64G09G5/02
Inventor 陈丽屠彦王莉莉王保平
Owner SOUTHEAST UNIV
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