Data processing device, display device having the same, and gamut mapping method
First Claim
1. A data processing device comprising:
- a first reference value generator which generates a first reference value corresponding to a ratio of a chromatic color using image signals or first image signals obtained by gamma-compensating the image signals;
a white generator which generates a white image signal and second image signals using the first image signals and generates a second reference value corresponding to an amount of a white data in use;
a third reference value generator which generates a third reference value using a first color coordinate, a second color coordinate, the first reference value and the second reference value, wherein the first color coordinate corresponds to a color coordinate of the second image signals, and the second color coordinate corresponds to a color coordinate of the white image signal; and
a gamut mapper which maps the second image signals to a color coordinate corresponding to the third reference value to generate third image signals,wherein the third reference value is set by adding the first color coordinate to a value, which is obtained by multiplying the first and second reference values by a value, which is obtained by subtracting the second color coordinate from the first color coordinate.
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Abstract
A data processing device includes a first reference value generator which generates a first reference value corresponding to a ratio of a chromatic color using image signals or first image signals obtained by gamma-compensating the image signals, a white generator which generates a white image signal and second image signals using the first image signals and a second reference value corresponding to an amount of a white data in use, a third reference value generator which generates a third reference value using a first color coordinate corresponding to a color coordinate of the second image signals, a second color coordinate corresponding to a color coordinate of the white image signal, the first reference value, and the second reference value, and a gamut mapper which maps the second image signals to a color coordinate corresponding to the third reference value to generate third image signals.
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Citations
16 Claims
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1. A data processing device comprising:
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a first reference value generator which generates a first reference value corresponding to a ratio of a chromatic color using image signals or first image signals obtained by gamma-compensating the image signals; a white generator which generates a white image signal and second image signals using the first image signals and generates a second reference value corresponding to an amount of a white data in use; a third reference value generator which generates a third reference value using a first color coordinate, a second color coordinate, the first reference value and the second reference value, wherein the first color coordinate corresponds to a color coordinate of the second image signals, and the second color coordinate corresponds to a color coordinate of the white image signal; and a gamut mapper which maps the second image signals to a color coordinate corresponding to the third reference value to generate third image signals, wherein the third reference value is set by adding the first color coordinate to a value, which is obtained by multiplying the first and second reference values by a value, which is obtained by subtracting the second color coordinate from the first color coordinate. - View Dependent Claims (2, 3, 4, 5)
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6. A display device comprising:
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a data processing device which generates a white image signal using image signals input thereto and performs a gamut mapping on the image signals; a display panel comprising a plurality of pixels; and a driving circuit which drives the pixels using the white image signal and the gamut-mapped image signals, wherein the data processing device comprises; a first reference value generator which generates a first reference value corresponding to a ratio of a chromatic color using the image signals or first image signals obtained by gamma-compensating the image signals; a white generator which generates the white image signal and second image signals using the first image signals and a second reference value corresponding to an amount of a white data in use; a third reference value generator which generates a third reference value using a first color coordinate, a second color coordinate, the first reference value and the second reference value, wherein the first color coordinate corresponds to a color coordinate of the second image signals, and the second color coordinate corresponds to a color coordinate of the white image signal; and a gamut mapper which maps the second image signals to a color coordinate corresponding to the third reference value to generate the gamut-mapped image signals, wherein the third reference value is set by adding the first color coordinate to a value, which is obtained by multiplying the first and second reference values by a value, which is obtained by subtracting the second color coordinate from the first color coordinate. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A gamut mapping method comprising:
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calculating a first reference value corresponding to a ratio of a chromatic color using image signals or first image signals obtained by gamma-compensating for the image signals; generating a white image signal and second image signals using the first image signals and a second reference value corresponding to an amount of a white data in use; generating a third reference value using a first color coordinate, a second color coordinate, the first reference value and the second reference value, wherein the first color coordinate corresponds to a color coordinate of the second image signals, and the second color coordinate corresponds to a color coordinate of the white image signal; and mapping the second image signals to a color coordinate corresponding to the third reference value to generate third image signals, wherein the third reference value is set by adding the first color coordinate to a value, which is obtained by multiplying the first and second reference values by a value, which is obtained by subtracting the second color coordinate from the first color coordinate. - View Dependent Claims (13, 14, 15, 16)
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Specification