Display device and method for displaying image

Patent metadata

Field	Value
Publication number	US-10429945-B2
Application number	US-201715657542-A
Country	US
Kind code	B2
Filing date	Jul 24, 2017
Priority date	Aug 30, 2016
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

A display device includes a calculator that calculates a number of horizontal pixels and a number of vertical pixels, a determiner that divides pixels of an image into a plurality of pixel groups, determines at least one pixel among the pixels as a first pixel based on a pixel value of the pixels included in each pixel group, and determines at least one pixel except for the first pixel among the pixels as a second pixel, a first image processor that performs an image-enhancement process on the first pixel among pixels to be included in the image to allow a first substance to correspond to a first substance increase rate, and a second image processor that performs an image-enhancement process on the second pixel among the pixels to be included in the image to allow a second substance to correspond to a second substance increase rate.

First claim

What is claimed is:

1. A display device comprising:
a calculator comprising calculating circuitry configured to calculate a number of horizontal pixels and a number of vertical pixels, which are recognized as one pixel by a viewer;
a determiner comprising determining circuitry configured to divide pixels of an image into a plurality of pixel groups, each pixel group being defined by the number of horizontal pixels and the number of the vertical pixels, to determine at least one pixel among the pixels included in each pixel group as a first pixel based on a pixel value of the pixels included in each pixel group, and to determine at least one pixel other than the first pixel among the pixels included in each pixel group as a second pixel;
a first image processor configured to perform an image-enhancement process on the first pixel via a first image enhancement factor at a first increase rate; and
a second image processor configured to perform an image-enhancement process on the second pixel via a second image enhancement factor at a second increase rate.

2. The display device of claim 1 , wherein the first image enhancement factor comprises one of a chromatic factor and a brightness, and the second image enhancement factor comprises the other of the chromatic factor and the brightness.

3. The display device of claim 1 , further comprising a display configured to output the pixels to which the image-enhancement process is applied by the first and second image processors, wherein the calculator is configured to determine the number of horizontal pixels and the number of vertical pixels, which are recognized as one pixel by the viewer through the display when the viewer watches the display with a viewer's eyesight at a viewing distance.

4. The display device of claim 3 , wherein the calculator is configured to calculate the number of horizontal pixels and the number of vertical pixels using at least one of the viewing distance of the viewer, the viewer's eyesight, a resolution of the display, and a size of the display.

5. The display device of claim 4 , wherein the calculator is configured to:
calculate a minimum length of the display, which is identified by the viewer using the viewing distance and the viewer's eyesight;
divide a vertical length and a horizontal length of the display by the minimum length to calculate a total number of the horizontal pixels and a total number of the vertical pixels;
divide the number of the horizontal pixels and the number of vertical pixels based on the resolution of the display by the total number of the horizontal pixels and the total number of the vertical pixels, respectively, to calculate a maximum number of horizontal perceptible pixels and a maximum number of vertical perceptible pixels;
calculate the number of the horizontal pixels to correspond to a natural number equal to or less than the maximum number of the horizontal perceptible pixels; and
calculate the number of the vertical pixels to correspond to a natural number equal to or less than the maximum number of the vertical perceptible pixels.

6. The display device of claim 4 , further comprising:
an input module comprising input circuitry configured to sense or receive an input with respect to the viewer's eyesight or use a sensor to sense the viewing distance, wherein the input module is configured to sense or receive an input with respect to the viewing distance.

7. The display device of claim 1 , wherein the determiner is configured to determine the pixels included in each pixel group as the first pixel and the second pixel based on an average brightness of the pixels included in the image or an average brightness of the pixels included in each pixel group.

8. The display device of claim 7 , wherein the determiner is configured to:
calculate the average brightness of the pixels included in the image or the average brightness of the pixels included in each pixel group;
determine the number of the first pixels and the number of the second pixels such that the number of the first pixels is the same or the closest to the number of the second pixels in each pixel group when the calculated average brightness is outside a first predetermined critical range; and
determine the number of the first pixels and the number of the second pixels such that the number of the first pixels is greater than the number of the second pixels in each pixel group when the calculated average brightness is within the first predetermined critical range.

9. The display device of claim 1 , wherein the determiner is configured to:
divide a total number of the pixels included in each pixel group by a number of the first pixels included in each pixel group to determine the first image enhancement factor increase rate; and
divide the total number of the pixels included in each pixel group by a number of the second pixels included in each pixel group to determine the second image enhancement factor increase rate.

10. The display device of claim 1 , further comprising:
an input module comprising input circuitry configured to receive a set value with respect to the image-enhancement process of the image; and
a memory configured to store a first adjustment rate with respect to the first image enhancement factor and a second adjustment rate with respect to the second image enhancement factor depending on the set value,
wherein the first image processor is configured to increase the first image enhancement factor of the first pixel by multiplying the first image enhancement factor increase rate by the first adjustment rate, and the second image processor is configured to increase the second image enhancement factor of the second pixel by multiplying the second image enhancement factor increase rate by the second adjustment rate.

11. The display device of claim 10 , wherein the determiner is configured to:
verify whether at least one pixel included in each pixel group is predicted to be saturated after performing the image-enhancement process; and
adjust at least one of the first adjustment rate, the second adjustment rate, the number of the first pixels, or the number of the second pixels with respect to each pixel group upon the saturation being predicted.

12. The display device of claim 1 , further comprising a display, wherein the first and second image processors are configured to output each pixel, to which the image-quality process is applied, to the display.

13. The display device of claim 12 , wherein the determiner is configured to:
verify whether at least one pixel not grouped into the pixel groups exists in the pixels that are to be included in the image; and
transmit the at least one pixel not grouped into the pixel groups to one of the first image processor and the second image processor or to the display.

14. A method for displaying an image using at least one processor, comprising:
calculating a number of horizontal pixels and a number of vertical pixels, which are recognized as one pixel by a viewer;
dividing pixels of the image into a plurality of pixel groups, each pixel group being defined by the number of horizontal pixels and the number of the vertical pixels;
determining at least one pixel among the pixels included in each pixel group as a first pixel based on a pixel value of the pixels included in each pixel group and determining at least one pixel other than the first pixel among the pixels included in each pixel group as a second pixel; and
performing, in parallel, an image-enhancement process via a first image enhancement factor on the first pixel and an image-enhancement process via a second image enhancement factor on the sec

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Min Jae
• Joh Yool Hee

Classifications

• G09G2340/0457

  Improvement of perceived resolution by subpixel rendering · CPC title

• G06F3/017 Primary

  Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883) · CPC title

• G06F3/0202 Primary

  Constructional details or processes of manufacture of the input device · CPC title

• G09G5/026

  Control of mixing and/or overlay of colours in general (G09G5/022 and G09G5/024 take precedence) · CPC title

• G09G5/02

  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)} · CPC title