Display driving method, driving circuit and display device

Patent metadata

Field	Value
Publication number	US-9916786-B2
Application number	US-201514913564-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Apr 9, 2015
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

The present disclosure provides a method for driving a display, including: step 1, obtaining a tone of each sub-pixels in an input image; step 2, determining whether a color of each sub-pixel to be calculated in the input image is capable of being distinguished from a reference color by a two-color blind viewer; and step 3, calculating the tone of each sub-pixel in an output image based on a result of the determination in step 2.

First claim

What is claimed is:

1. A method for driving a display, comprising:
step 1, obtaining a tone of each sub-pixel in an input image;
step 2, determining whether a color of each sub-pixel to be calculated in the input image is capable of being distinguished from a reference color by a two-color blind viewer, wherein the reference color is one of two colors incapable of being distinguished by the two-color blind viewer;
step 3, calculating the tone of each sub-pixel in an output image based on a result of the determination in the step 2, and
step 4, displaying the output image on the display for the two-color blind viewer to view,
wherein the step 3 comprises:
in response to a positive determination in the step 2, taking the tone of the input image as the tone of the output image; and
in response to a negative determination in the step 2, adding a tone difference to the tone of the input image to obtain the tone of each sub-pixel in the output image.

2. The method according to claim 1 , wherein the step 3 further comprises:
calculating the tone of the sub-pixel in the output image based on the following equation (1):
H 1 =H 0 +ΔH   (1),

wherein H 0 indicates the tone of the sub-pixel to be calculated in the input image;
H 1 indicates the tone of the sub-pixel in the output image, wherein a position of the sub-pixel in the output image corresponds to a position of the sub-pixel to be calculated in the input image;
when the color of the sub-pixel to be calculated is incapable of being distinguished from the reference color by the two-color blind viewer, ΔH≠0, and ΔH is the tone difference calculated based on a two-color blind simulation model, so that the color of the sub-pixel in the output image is converted to be capable of being distinguished from the reference color by the two-color blind viewer, wherein the position of the sub-pixel in the output image corresponds to the position of the sub-pixel to be calculated; and
when the color of the sub-pixel to be calculated is capable of being distinguished from the reference color by the two-color blind viewer, ΔH=0.

3. The method according to claim 1 , wherein the step 1 further comprises obtaining a saturation of each sub-pixel in the input image;
the step 3 further comprises:
calculating a saturation of each sub-pixel in the output image based on the following equation (2):
S 1 =S 0 +ΔS   (2);

wherein S 1 indicates the saturation of the sub-pixel to be calculated in the output image;
S 0 indicates the saturation of the sub-pixel in the input image, wherein a position of the sub-pixel in the input image is same as a position of the sub-pixel to be calculated;
when the color of the sub-pixel to be calculated is incapable of being distinguished from the reference color by the two-color blind viewer, ΔS≠0; and
when the color of the sub-pixel to be calculated is capable of being distinguished from the reference color by the two-color blind viewer, ΔS=0.

4. The method according to claim 3 , wherein |ΔS|≦0.45.

5. The method according to claim 4 , wherein in the step 2, when the tone of the sub-pixel to be calculated in the input image is within a first range or a second range, it is determined that the color of the sub-pixel to be calculated is incapable of being distinguished from the reference color, wherein the first range is [315°, 360°], and the second range is [0°, 45° ], and when H 0 is within the first range or the second range, in the step 3, −40°≦H≦−1°, and −1<ΔS<0.

6. The method according to claim 5 , wherein
when 15°<H 0 ≦45°, in the step 3, −39°≦ΔH≦−1°, −0.099≦ΔS≦−0.001, and the more H 0 is, the more ΔH is, and the more H 0 is, the more ΔS is;
when 315°≦H 0 <345°, in the step 3, −39°≦ΔH≦−1°, −0.099≦ΔS≦−0.001, and the more H 0 is, the less ΔH is, and the more H 0 is, the less ΔS is; and
when 345°≦H 0 ≦360° or when 0°≦H 0 ≦15°, in the step 3, ΔH=−40° and ΔS=−0.1.

7. The method according to claim 3 , wherein the step 2 further comprises, when the tone of the sub-pixel to be calculated in the input image is within a third range, determining that the color of the sub-pixel to be calculated is incapable of being distinguished from the reference color, wherein the third range is [75°, 165°], when H 0 is within the third range, in the step 3, 1≦ΔH≦40°, and 0<ΔS<1.

8. The method according to claim 7 , wherein
when 75°≦H 0 <105°, in the step 3, 1°≦ΔH≦39°, 0.001≦ΔS≦0.099, and the more H 0 is, the more ΔH is, and the more H 0 is, the more ΔS is;
when 105°≦H 0 ≦135°, in the step 3, ΔH=40°, and ΔS=0.1;
when 135°<H 0 ≦165°, in the step 3, 1°≦ΔH≦39°, 0.001≦ΔS≦0.099, and the more H 0 is, the less ΔH is, and the more H 0 is, the less ΔS is.

9. The method according to claim 1 , wherein a brightness of each sub-pixel in the output image is equivalent to a brightness of a corresponding sub-pixel in the input image.

10. The method according to claim 1 , further comprising following steps between the step 1 and the step 2:
determining whether a calculation start signal being received;
in response to receiving the calculation start signal, going to the step 2; and
in response to not receiving the calculation start signal, directly output the input image on the display.

11. A driving circuit for a display device, is configured to: obtain a tone of each sub-pixel in an input image; determine whether a color of each sub-pixel to be calculated in the input image is capable of being distinguished from a reference color by a two-color blind viewer, wherein the reference color is one of two colors incapable of being distinguished by the two-color blind viewer; calculate the tone of each sub-pixel in an output image based on a determination result; and display the output image on a display panel of the display device for the two-color blind viewer to view; wherein in calculating the tone of each sub-pixel in the output image based on the determination result, the driving circuit is further configured to: in response to a positive determination result, take the tone of the input image as the tone of the output image; and in response to a negative determination result, add a tone difference to the tone of the input image to obtain the tone of each sub-pixel in the output image.

12. The driving circuit according to claim 11 , wherein the driving circuit is further configured to calculate the tone of the sub-pixel in the output image based on the following equation (1): H1=Ho+ΔH (1); wherein Ho indicates the tone of the sub-pixel to be calculated in the input image; H1 indicates the tone of the sub-pixel in the output image, wherein a position of the sub-pixel in the output image corresponds to a position of the sub-pixel to be calculated in the input image; when the color of the sub-pixel to be calculated is incapable of being distinguished from the reference color by the two-color blind viewer, ΔH#O, and ΔH is the tone difference calculated based on a two-color blind simulation model, so that the color of the sub-pixel in the output image is converted to be capable of being distinguished from the reference color by the two-color blind viewer, wherein the position of the sub-pixel in the output image corresponds to the position of the sub-pixel to be calculated; and when the color of the sub-pixel to be calculated is capable of being distinguished from the reference color by the two-color blind viewer, ΔH=O.

13. The driving circuit according to claim 12 , wherein |ΔS|≦0.45.

14. The driving circuit according to claim 11 , wherein the driving circuit is further configured to obtain a saturation of each sub-pixel in the input image and calculate a sa

Assignees

• Boe Technology Group Co Ltd

Inventors

• Chen Ruisi

Classifications

• G09G2340/14

  Solving problems related to the presentation of information to be displayed · CPC title

• G09G5/02 Primary

  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

• G09G2354/00

  Aspects of interface with display user · CPC title

• G09G3/2003 Primary

  Display of colours (specific for liquid crystal displays G09G3/3607) · CPC title

• G09G2340/06

  Colour space transformation · CPC title