SYSTEMS AND METHODS FOR REDUCING DESATURATION OF IMAGES RENDERED ON HIGH BRIGHTNESS DISPLAYS

• US 20100026705A1
• Filed: 09/25/2007
• Published: 02/04/2010
• Est. Priority Date: 09/30/2006
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Im, MoonHwan, Credelle, Thomas Lloyd
• Granted Patent: US 8,259,127 B2
• Time in Patent Office: Days
• US Class Current: 345/590
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

In one embodiment of the display system, the display system comprises an image pipeline that accepts input color image data of one color gamut to be rendered on a display having high brightness subpixel layouts. In one embodiment, the system comprises a boost function that maps the input color data onto another color gamut that boosts the luminance of colors that might appear dark if rendered against a white or very light background.

Claims

1. An image processing method comprising:

receiving input color image data comprising at least a first, second and third primary color data values;

determining a minimum color data value of said at least first, second and third primary color data values; and

computing a substitute color data value for said minimum color data value;

wherein said substitute color data value is computed as a function of a relationship between slopes of a first and a second gain curve;

said first gain curve indicating a function of color adjustment values for said primary color indicated by said minimum color data value; and

said second gain curve indicating a function of color adjustment values for said other primary colors.

2. The method as recited in claim 1 wherein a mixed color is comprised of the color data values that are not the minimum color data value.

3. The method as recited in claim 2 wherein said first, second and third primary colors data values are red, green and blue respectively.

4. The method as recited in claim 3 wherein said mixed color comprises one of a group, said group comprising cyan, magenta and yellow.

5. The method as recited in claim 2 wherein further said substitute color data value desaturates the mixed color comprised of the two colors that are not the minimum color data value.

6. The method as recited in claim 5 wherein said amount of desaturation of said mixed color substantially reduces the amount of simultaneous contrast of said mixed color.

7. A display system comprising:

an input image data means;

a display, said display comprising a subpixel repeating group, said repeating group comprising at least one high brightness color filter;

a gamut mapping unit, said gamut mapping unit mapping said input image data onto high brightness image data, said high brightness image data being associated with said subpixel repeating group comprising said at least one high brightness color filter; and

a boost unit, said boost unit increasing the luminance of a set of mixed colors when input image data is close to said set of mixed colors.

8. The display system as recited in claim 7 wherein said mixed colors comprise at least one of a group, said group comprising cyan, magenta and yellow.

9. The display system as recited in claim 7 wherein said at least one high brightness color filter is one of a group, said group comprising:

white, cyan, yellow, magenta.

10. The display system as recited in claim 7 wherein said boost unit substantially reduces simultaneous contrast of said mixed colors.